August 2020
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What's New & Other NotesCLARC Table - August 2020
1. CAS Numbers. We updated CAS numbers for the following chemicals: Coke Oven Emissions (E649830) and Polybrominatedbiphenyls (36355-01-8). Numbers that begin with "E" are EPA identification numbers and are used due to the lack of a CAS number.Note - CAS numbers in CLARC and EPA's Regional Screening Levels (RSL) table are consistent. The information on alternative CASnumbers on the CLARC Data Tables webpage has been updated to reflect this.
2. Soil Cleanup Levels to Protect Groundwater - April 2019 CLARC Guidance. We updated this CLARC guidance to address editorialand clarity issues.
3. Soil Protective of Groundwater for Saturated Soil Calculations. We made updates to include soil protective of groundwaterlevels for the saturated zone for organics that have a distribution coefficient (Kd) value, but no Henry's Law constant in CLARC. AHenry’s Law constant is not needed to calculate soil protective of groundwater cleanup levels for saturated zone soil since thedefault air-filled soil porosity is assumed to be zero. This change effects the following chemicals: aroclors 1254, 1260, and 1016;total PCBs; 2,3,4,6-tetrachlorophenol; pentachlorobenzene; and paraquat dichloride.
4. Chemical-specific note for pH. This note was updated to reflect that a Soil Organic Carbon-Water Partitioning Coefficient (Koc)value reflective of a pH of 6.8 was used in the soil protective of groundwater calculations for the listed ionizing organic chemicals.
5. Chemical-specific values. A summary of updates is provided below.
polychlorinated biphenyls (PCBs): Calculated a Kd value using the defaults in MTCA Equation 747-2. A soil protective of groundwater level for the saturated zone was calculated.Aroclor 1254: Added a Koc value from EPA's 1994 Soil Screening Guidance. A soil protective of groundwater level for the saturated zone was calculated.Mercury and 1-Methylnaphthalene: Updated the Henry's Law constant at 13 Degrees Celsius. The groundwater screening level for vapor intrusion (VI) was updated for mercury.Nitrobenzene and bromomethane: Updated the solubility values based on EPA's 1996 Soil Screening Level Guidance.Koc was updated for the following: benzene, bis(2-chloroethyl)ether, chloroform, 1,1-dichloroethane, 1,3-dichloropropene, diethyl phthalate, and trichloroethylene. The full value from EPA's 1996 Soil Screening Level Guidance was used instead of the rounded value.
Link to Soil Protection of Groundwater Guidance
Washington State Department of Ecology -- Toxics Cleanup Program Navigation note: This document is bookmarked for easy navigation between tables.
Washington State Department of Ecology -- Toxics Cleanup Program August 2020
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What's New & Other NotesCLARC Table - August 2020
6. Eliminated Chemicals. The 40 chemicals/parameters in the table below were eliminated from CLARC due to the lack of toxicity data, cleanup levels, and levels based on state and federal requirements.
7. Uranium Soluble Salts.
In 2020, Ecology completed a consultation process with EPA and the Washington State Department of Health (DOH) on using the ATSDR oral minimal risk level (MRL) instead of the current IRIS oral RfD for soluble uranium. Both EPA and DOH concurred with Ecology's decision to use the ATSDR oral MRL over the IRIS oral RfD value. Please see Ecology's supplemental CLARC guidance on soluble uranium using the CLARC link below.
In 2002, EPA’s NCEA, which manages IRIS, conducted a literature review for uranium and identified new relevant toxicological studies that may yield a change in the uranium oral reference dose (RfD). The existing uranium oral RfD in IRIS is based on a single-dose response study from 1949. In 2013, ATSDR conducted a comprehensive review and evaluation of available toxicity studies and derived an intermediate minimum risk level (MRL; see ATSDR link below). The MRL is a dose that is likely to be without an appreciable risk of adverse noncancer effects over a specified duration of exposure. ATSDR concluded that continued exposure beyond an intermediate duration is not likely to induce more severe effects, and may be adequately protective of chronic exposures. The MRL derived by ATSDR for soluble uranium is 15 times lower (this yields lower cleanup levels) than the oral RfD published in IRIS.
In a memo dated December 21, 2016 (see EPA link below), the EPA Superfund Program recommended that the ATSDR MRL be used in place of the RfD in IRIS without any further adjustment to assess chronic oral exposures. Ecology agrees with EPA that ATSDR’s MRL was derived using better and more relevant data than the study that formed the basis for the RfD in IRIS, and is scientifically defensible. The techniques used by ATSDR to derive its RfD are consistent with those used by EPA’s IRIS program and those recommended in MTCA (WAC 173-340-708(7)(f)).
IRIS is undertaking a reassessment of the noncancer, nonradiological health effects of uranium via oral exposure. Uranium was included on the December 2015 IRIS Program multiyear agenda as a chemical having high priority for assessment development. Ecology will re-evaluate using the ATSDR oral MRL for uranium if and when IRIS is updated to provide a new noncancer oral RfD for soluble uranium.
Link to ATSDR Toxicological Profile - Uranium
Link to EPA Superfund Memo - Uranium
Link to CLARC Supplemental Guidance - Uranium
Washington State Department of Ecology -- Toxics Cleanup Program August 2020
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What's New & Other NotesCLARC Table - August 2020
Updated toxicity values are highlighted in blue (no pattern) in the table.
8. Toxicity Value Updates. Toxicity values in CLARC for the following hazardous substances have been changed based on a review of EPA's May 2020 Regional Screening Level Table. Updated toxicity values are highlighted in blue in the table. Cells highlighted in blue with no value means that the old value was removed.
1. Inhalation RfC/RfDi: Added for antimony.2. Inhalation IUR/CPFi: Removed for chlorothalonil and 2-methoxy-5-nitroaniline; updated for direct black 38, direct blue 6, and direct brown 95.3. Oral RfDo: Updated for uranium, soluble salts.4. Oral CPFo: Added for nickel refinery dust; updated for chlorothalonil and direct black 38.
Other Notes1. Hazardous Substances with Chemical-Specific Considerations. For some hazardous substances, potential default cleanup levels may require special calculations or consideration of site-specific factors. Examples include benzo[a]pyrene/cPAHs, and hardness-dependent metals criteria for applicable state and federal fresh surface water laws. Many of these hazardous substances are listed in the CLARC tables with CAPITAL LETTERS and gray-shaded cells. A column (Links to Important Notes) is included in the table which contains links to relevant information. Many of the links go to a worksheet in this spreadsheet labeled "Notes - Chemical-Specific," while other links go to individual PDF documents.
2. Henry Constants for Soil to Groundwater Cleanup Level Calculations. For default calculation of soil cleanup levels to protect groundwater, Henry Constants at 13 degrees Celsius should be used. For total xylenes, the 13 degree Celsius Henry Constant in CLARC was calculated as the mean of the individual values of the 3 isomers.
Sources of cancer toxicity data that include a mutagenic mode of action are highlighted in orange/dotted pattern (see I-M)
3. Sources of toxicity values. The source of each toxicity value is listed in the Excel and PDF files using the following abbreviations:
I = IRIS (Integrated Risk Information System) database from the Environmental Protection Agency (EPA) I-M = Toxicity source is IRIS and the chemical is evaluated based on a mutagenic mode of action for early life exposure (highlighted in orange/dotted pattern with bold text) P = PPRTV = Provisional Peer-Reviewed Toxicity Values from EPA's Superfund Health Risk Technical Support Center (STSC) (STSC is within EPA's Office of Research and Development's (ORD's) Center for Public Health and Environmental Assessment, formerly known as the National Center for Environmental Assessment [NCEA]). X = PPRTV Screening Level (does not meet all of requirements for a standard PPRTV value) H = HEAST = Health Effects Assessment Summary Table from EPA C = Cal EPA = California Environmental Protection Agency A = ATSDR = Agency for Toxic Substances and Disease Registry O = EPA Office of Pesticide Programs S = Other EPA sources
Note: The oral cancer slope factor for chromium (VI), ethylbenzene, and naphthalene from Cal EPA, and the inhalation cancer potency factor for ethylbenzene from Cal EPA, have not been included in CLARC pending further evaluation.
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
83-32-9 PAHs acenaphthene 6.00E-02 I 4.80E+03 9.80E+01 5.00E+00 2.10E+0530560-19-1 Pesticides acephate 1.20E-03 O 9.60E+01 4.20E+03
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-0334256-82-1 Pesticides acetochlor 2.00E-02 I 1.60E+03 7.00E+04
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I 7.20E+04 2.90E+01 2.10E+00 3.20E+0675-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-0475-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-0298-86-2 SVOCs acetophenone 1.00E-01 I 8.00E+03 3.50E+05
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I 1.00E+03 4.60E+04107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 4.00E+01 1.80E+03
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M 1.60E+02 3.80E-01 7.00E+03 2.60E+0279-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I 4.00E+04 1.80E+06
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 3.20E+03 1.90E+00 1.40E+05 2.40E+0215972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C 8.00E+02 1.80E+01 3.50E+04 2.30E+03
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C 1.20E+04 5.60E+01 5.30E+05 7.30E+03116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I 8.00E+01 3.50E+03
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I 8.00E+01 3.50E+03309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 2.40E+00 5.90E-02 2.50E-03 1.30E-04 1.10E+02 7.70E+00
74223-64-6 Pesticides ally 2.50E-01 I 2.00E+04 8.80E+05107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I 4.00E+02 1.80E+04107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C 4.80E+01 6.30E+03
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P 8.00E+04 3.50E+0620859-73-8 Metal compounds aluminum phosphide 4.00E-04 I 3.20E+01 1.40E+0367485-29-4 Pesticides amdro 1.70E-02 O 1.40E+03 6.00E+04
834-12-8 Pesticides ametryn 9.00E-03 I 7.20E+02 3.20E+04591-27-5 Phenols aminophenol;m- 8.00E-02 P 6.40E+03 2.80E+05
33089-61-1 Pesticides amitraz 2.50E-03 I 2.00E+02 8.80E+037664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-017790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I 5.60E+01 2.50E+037773-06-0 Pesticides ammonium sulfamate 2.00E-01 I 1.60E+04 7.00E+05
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I 5.60E+02 1.80E+02 2.50E+04 2.30E+04120-12-7 PAHs anthracene 3.00E-01 I 2.40E+04 2.30E+03 1.10E+02 1.10E+06
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 3.20E+01 5.40E+00 2.70E-01 1.40E+031314-60-9 Metal compounds antimony pentoxide 5.00E-04 H 4.00E+01 1.80E+03
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H 7.20E+01 3.20E+031332-81-6 Metal compounds antimony tetroxide 4.00E-04 H 3.20E+01 1.40E+031309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05
74115-24-5 Pesticides apollo 1.30E-02 I 1.00E+03 4.60E+04140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I 4.00E+03 4.00E+01 1.80E+05 5.30E+03
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 5.60E+00 1.40E+01 1.20E-01 2.50E+02 1.90E+0311097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 1.60E+00 5.00E-01 3.50E-02 7.00E+01 6.60E+0111096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S 5.00E-01 3.60E-02 6.60E+01
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 2.00E+01 2.40E+01 6.70E-01 2.90E+00 1.50E-01 2.00E+01 1.10E+03 8.80E+017784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C 2.80E-01 1.20E+011332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I
76578-14-8 Pesticides assure 9.00E-03 I 7.20E+02 3.20E+043337-71-1 Pesticides asulam 3.60E-02 O 2.90E+03 1.30E+051912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C 2.80E+03 4.30E+00 1.20E+05 5.70E+02
65195-55-3 Pesticides avermectin B1 4.00E-04 I 3.20E+01 1.40E+03103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I 9.10E+00 1.20E+03
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I 1.60E+04 1.60E+03 8.30E+01 7.00E+05114-26-1 Pesticides baygon 4.00E-03 I 3.20E+02 1.40E+04
43121-43-3 Pesticides bayleton 3.40E-02 O 2.70E+03 1.20E+0568359-37-5 Pesticides baythroid 2.50E-02 I 2.00E+03 8.80E+04
1861-40-1 Pesticides benefin 5.00E-03 O 4.00E+02 1.80E+0417804-35-2 Pesticides benomyl 5.00E-02 I 4.00E+03 1.80E+0525057-89-0 Herbicides bentazon 3.00E-02 I 2.40E+03 1.10E+05
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P 8.00E+03 2.50E+02 3.50E+05 3.30E+04
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
71-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 3.00E-02 3.20E+02 1.80E+01 2.70E-02 1.70E-03 3.00E-02 1.40E+04 2.40E+03108-98-5 SVOCs benzenethiol 1.00E-03 P 8.00E+01 3.50E+03
92-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 2.40E+02 4.30E-03 1.10E+04 5.70E-0156-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 1.00E-01 2.40E+01 1.90E-01 3.90E+00 1.90E-01 2.00E+00 1.10E+03 1.30E+02
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I 3.20E+05 2.60E+02 1.80E+01 1.40E+0798-07-7 VOCs benzotrichloride 1.30E+01 I 7.70E-02 1.00E+01
100-51-6 SVOCs benzyl alcohol 1.00E-01 P 8.00E+03 3.50E+05100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I 1.60E+02 5.90E+00 7.00E+03 7.70E+02
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 1.60E+02 6.30E+01 3.20E+00 7.00E+0391-58-7 PAHs beta-chloronaphthalene 8.00E-02 I 6.40E+03 2.80E+05
141-66-2 Pesticides bidrin 3.00E-05 O 2.40E+00 1.10E+0282657-04-3 Pesticides biphenthrin 1.50E-02 I 1.20E+03 5.30E+04
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I 4.00E+04 1.30E+02 1.80E+06 1.60E+04108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 3.20E+03 1.40E+01 1.40E+05 1.90E+03111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 9.10E-01 2.20E-04 1.40E-05 1.20E+02117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 1.60E+03 7.10E+01 1.30E+01 6.70E-01 7.00E+04 9.40E+03542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I 4.50E-03 6.00E-01
80-05-7 Phenols bisphenol a 5.00E-02 I 4.00E+03 1.80E+057440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I 1.60E+04 7.00E+05
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I 3.20E+02 1.40E+00 1.40E+04 1.90E+0279-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I 6.40E+02 5.60E-01 3.30E-02 2.80E+0475-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 1.60E+03 1.60E+01 3.60E-02 2.40E-03 7.00E+04 2.10E+03
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-0175-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 1.60E+03 1.30E+02 3.60E-01 2.30E-02 7.00E+04 1.70E+0474-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 1.10E+02 5.00E-02 3.30E-03 4.90E+03
2104-96-3 Pesticides bromophos 5.00E-03 H 4.00E+02 1.80E+041689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O 1.20E+03 1.00E+01 5.30E+04 1.30E+031689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O 1.20E+03 1.00E+01 5.30E+04 1.30E+03
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C 1.70E+00 2.20E+0271-36-3 VOCs butanol;n- 1.00E-01 I 8.00E+03 3.30E+00 2.30E-01 3.50E+0585-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P 1.60E+04 5.30E+02 1.30E+01 6.50E-01 7.00E+05 6.90E+04
2008-41-5 Pesticides butylate 5.00E-02 I 4.00E+03 1.80E+0585-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I 8.00E+04 3.50E+0694-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O 3.50E+02 1.50E+0475-60-5 Pesticides cacodylic acid 2.00E-02 A 1.60E+03 7.00E+04
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 2.00E+00 8.00E+01 6.90E-01 3.50E-02 2.00E+00 3.50E+03
592-01-8 Cyanides calcium cyanide 1.00E-03 I 8.00E+01 3.50E+03105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I 4.00E+04 1.80E+06
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C 1.60E+02 6.70E+00 7.00E+03 8.80E+02133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C 1.00E+04 4.30E+02 4.60E+05 5.70E+04
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I 8.00E+03 3.50E+051563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I 4.00E+02 1.80E+04
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I 8.00E+03 5.00E+00 2.70E-01 3.50E+0556-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 3.20E+02 1.40E+01 4.20E-02 2.20E-03 1.40E+04 1.90E+03
55285-14-8 Pesticides carbosulfan 1.00E-02 I 8.00E+02 3.50E+045234-68-4 Pesticides carboxin 1.00E-01 I 8.00E+03 3.50E+051306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04
302-17-0 VOCs chloral hydrate 1.00E-01 I 8.00E+03 3.50E+05133-90-4 Herbicides chloramben 1.50E-02 I 1.20E+03 5.30E+04118-75-2 Pesticides chloranil 4.00E-01 H 2.50E+00 3.30E+02
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 4.00E+01 2.90E+00 2.10E+00 1.00E-01 1.80E+03 3.80E+02143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I 2.40E+01 1.00E-01 1.10E+03 1.30E+01
16887-00-6 Nutrients chloride
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 6 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
90982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O 7.20E+03 3.20E+057782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 8.00E+03 3.50E+05
506-77-4 Cyanides chlorine cyanide 5.00E-02 I 4.00E+03 1.80E+0510049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I 2.40E+03 1.10E+05
7758-19-2 Nutrients chlorite 3.00E-02 I 2.40E+03 1.10E+0575-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01
126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H 1.60E+03 7.00E+043165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H 2.20E+00 2.90E+02
95-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P 2.40E+02 1.00E+01 1.10E+04 1.30E+0379-11-8 SVOCs chloroacetic acid 2.00E-03 H 1.60E+02 7.00E+03
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P 3.20E+02 5.00E+00 1.20E-03 7.70E-05 1.40E+04 6.60E+02108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 1.60E+03 8.60E-01 5.10E-02 7.00E+04510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C 1.60E+03 9.10E+00 7.00E+04 1.20E+03
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X 2.40E+03 1.10E+0598-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P 2.40E+02 1.10E+04
109-69-3 VOCs chlorobutane;1- 4.00E-02 P 3.20E+03 1.40E+0559-50-7 Phenols chlorocresol 1.00E-01 A 8.00E+03 3.50E+0575-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+0167-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 8.00E+02 3.20E+01 7.40E-02 4.80E-03 3.50E+04 4.20E+0374-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C 4.20E-01 5.50E+0188-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P 2.40E+02 3.30E+00 1.10E+04 4.40E+02
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P 5.60E+01 1.70E+01 2.50E+03 2.20E+0395-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I 4.00E+02 4.70E-01 2.70E-02 1.80E+04
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C 1.20E+03 5.90E+01 5.30E+04 7.70E+0395-49-8 VOCs chlorotoluene;o- 2.00E-02 I 1.60E+03 7.00E+04
101-21-3 Pesticides chlorpropham 5.00E-02 O 4.00E+03 1.80E+052921-88-2 Pesticides chlorpyrifos 1.00E-03 A 8.00E+01 3.50E+035598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H 8.00E+02 3.50E+04
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O 4.00E+03 1.80E+0560238-56-4 Pesticides chlorthiophos 8.00E-04 H 6.40E+01 2.80E+03
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I 2.00E+03 1.20E+05 4.80E+05 2.40E+04 2.00E+03 5.30E+0618540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 1.90E+01 2.40E+02 1.80E+01 9.30E-01 1.90E+01 1.10E+04
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P 2.40E+01 4.30E+00 2.20E-01 1.10E+03
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+007440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H 3.20E+03 2.80E+02 1.40E+01 1.40E+05
544-92-3 Cyanides copper cyanide 5.00E-03 I 4.00E+02 1.80E+04108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I 4.00E+03 1.80E+05
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I 4.00E+03 2.30E+00 1.50E-01 1.80E+05106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A 8.00E+03 3.50E+05123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H 8.00E+01 5.30E-01 3.50E+03 6.90E+01
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I 8.00E+03 3.50E+0521725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H 1.60E+02 1.20E+00 7.00E+03 1.60E+02
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 5.00E+01 2.20E+03460-19-5 Cyanides cyanogen 1.00E-03 I 8.00E+01 3.50E+03506-68-3 Cyanides cyanogen bromide 9.00E-02 I 7.20E+03 3.20E+05110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I 4.00E+05 1.80E+07108-91-8 VOCs cyclohexylamine 2.00E-01 I 1.60E+04 7.00E+05
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O 8.00E+01 3.50E+0352315-07-8 Pesticides cypermethrin 2.30E-02 O 1.80E+03 8.10E+0466215-27-8 Pesticides cyromazine 5.00E-01 O 4.00E+04 1.80E+06
1861-32-1 Herbicides dacthal 1.00E-02 I 8.00E+02 3.50E+0475-99-0 Herbicides dalapon, sodium salt 3.00E-02 I 2.40E+03 1.10E+05
39515-41-8 Pesticides danitol 2.50E-02 I 2.00E+03 8.80E+04
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 7 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
94-82-6 Pesticides db;2,4- 3.00E-02 O 2.40E+03 1.10E+0572-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 2.40E+00 4.20E+00 3.40E-01 1.70E-02 1.10E+02 5.50E+0272-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 2.40E+01 2.90E+00 4.50E-01 2.20E-02 1.10E+03 3.90E+0250-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 3.00E+00 4.00E+01 2.90E+00 3.50E+00 1.70E-01 4.00E+00 1.80E+03 3.90E+02
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I 5.60E+02 1.40E+03 2.50E+04 1.90E+058065-48-3 Pesticides demeton 4.00E-05 I 3.20E+00 1.40E+02
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I 4.80E+04 8.30E+02 2.10E+06 1.10E+052303-16-4 Pesticides diallate 6.10E-02 H 1.60E+01 2.20E+03
333-41-5 Pesticides diazinon 7.00E-04 A 5.60E+01 2.50E+0353-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran 1.00E-03 X 8.00E+01 3.50E+0396-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P 1.60E+01 1.30E+00 7.00E+02 1.60E+02
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I 8.00E+02 3.50E+04124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I 1.60E+03 1.20E+01 2.80E-02 1.80E-03 7.00E+04 1.60E+03
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I 8.00E+03 5.70E+01 3.00E+00 3.50E+051918-00-9 Herbicides dicamba 3.00E-02 I 2.40E+03 1.10E+053400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+0179-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I 3.20E+02 2.00E+01 1.40E+04 2.60E+0395-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 7.20E+03 7.00E+00 4.00E-01 3.20E+05
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 5.60E+03 1.90E+02 1.20E+00 6.80E-02 2.50E+05 2.40E+04
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 2.20E+00 3.60E-03 2.00E-04 2.90E+0275-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I 1.60E+04 7.00E+0575-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C 1.60E+04 1.80E+02 4.10E-02 2.60E-03 7.00E+05 2.30E+04
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 4.80E+02 1.10E+01 2.30E-02 1.60E-03 2.10E+04 1.40E+03540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H 7.20E+02 3.20E+04
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 4.00E+03 4.60E-02 2.50E-03 1.80E+05156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I 1.60E+02 7.80E-02 5.20E-03 7.00E+03156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I 1.60E+03 5.20E-01 3.20E-02 7.00E+04120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I 2.40E+02 1.70E-01 1.00E-02 1.10E+04
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I 8.00E+02 3.50E+0478-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 3.20E+03 2.70E+01 2.50E-02 1.70E-03 1.40E+05 3.50E+03
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I 2.40E+02 1.10E+04542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 2.40E+03 1.00E+01 2.30E-03 1.40E-04 1.10E+05 1.30E+03
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I 4.00E+01 3.40E+00 1.80E+03 4.50E+0277-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P 6.40E+03 2.80E+0560-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 4.00E+00 6.30E-02 2.80E-03 1.40E-04 1.80E+02 8.20E+0084-66-2 Phthalates diethyl phthalate 8.00E-01 I 6.40E+04 7.20E+01 4.70E+00 2.80E+06
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P 2.40E+03 1.10E+05111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P 4.80E+03 2.10E+05617-84-5 SVOCs diethylformamide 1.00E-03 P 8.00E+01 3.50E+03
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C 2.90E-03 3.80E-0143222-48-6 Pesticides difenzoquat 8.30E-02 O 6.60E+03 2.90E+0535367-38-5 Pesticides diflubenzuron 2.00E-02 I 1.60E+03 7.00E+04
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+011445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I 6.40E+03 2.80E+05
55290-64-7 Pesticides dimethipin 2.20E-02 O 1.80E+03 7.70E+0460-51-5 Pesticides dimethoate 2.20E-03 O 1.80E+02 7.70E+03
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P 6.30E-01 8.20E+01131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I 8.00E+03 3.50E+05
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H 1.70E+00 2.30E+0295-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P 1.60E+02 5.00E+00 7.00E+03 6.60E+02
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P 1.60E+02 3.70E+01 7.00E+03 4.90E+03119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P 9.10E-02 1.20E+01
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P 8.00E+03 3.50E+05
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 8 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
57-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X 8.00E+00 3.50E+02540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C 1.80E-03 2.40E-01105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I 1.60E+03 1.30E+00 7.90E-02 7.00E+04576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I 4.80E+01 2.10E+03
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I 8.00E+01 3.50E+0399-65-0 Explosives dinitrobenzene;m- 1.00E-04 I 8.00E+00 3.50E+02
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P 8.00E+00 3.50E+02100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P 8.00E+00 3.50E+02131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I 1.60E+02 7.00E+03
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I 1.60E+02 1.30E-01 9.20E-03 7.00E+0325550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I 7.20E+01 1.50E+00 3.20E+03 1.90E+02121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 1.60E+02 3.20E+00 1.70E-03 1.10E-04 7.00E+03 4.20E+02606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P 2.40E+01 6.70E-01 3.10E-04 2.10E-05 1.10E+03 8.80E+01117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P 8.00E+02 2.70E+05 1.30E+04 3.50E+04
88-85-7 Herbicides dinoseb 1.00E-03 I 8.00E+01 3.50E+03123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I 2.40E+03 1.00E+01 1.10E+05 1.30E+03957-51-7 Pesticides diphenamid 3.00E-02 I 2.40E+03 1.10E+05122-39-4 Pesticides diphenylamine 1.00E-01 O 8.00E+03 3.50E+05122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 1.30E+00 1.60E+02
85-00-7 Pesticides diquat 2.20E-03 I 1.80E+02 7.70E+031937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C 1.40E-01 1.80E+012602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C 1.40E-01 1.80E+01
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C 1.50E-01 2.00E+01298-04-4 Pesticides disulfoton 4.00E-05 I 3.20E+00 1.40E+02505-29-3 SVOCs dithiane;1,4- 1.00E-02 I 8.00E+02 3.50E+04330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I 1.60E+02 7.00E+03534-52-1 Phenols DNOC 8.00E-05 X 6.40E+00 2.80E+02
2439-10-3 Pesticides dodine 2.00E-02 O 1.60E+03 7.00E+04115-29-7 Pesticides endosulfan 6.00E-03 I 4.80E+02 4.30E+00 2.20E-01 2.10E+04
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P 4.80E+02 2.10E+04959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall 2.00E-02 I 1.60E+03 7.00E+04
72-20-8 Pesticides endrin 3.00E-04 I 2.40E+01 4.40E-01 2.20E-02 1.10E+037421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I 4.80E+02 1.00E+02 2.10E+04 1.30E+04106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03
16672-87-0 Pesticides ethephon 5.00E-03 I 4.00E+02 1.80E+04563-12-2 Pesticides ethion 5.00E-04 I 4.00E+01 1.80E+03111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P 8.00E+03 3.50E+05110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P 7.20E+03 3.20E+05141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I 7.20E+04 3.20E+06140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H 4.00E+02 2.10E+01 1.80E+04 2.70E+03
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O 4.00E+03 1.80E+05
60-29-7 VOCs ethyl ether 2.00E-01 I 1.60E+04 7.00E+0597-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H 7.20E+03 3.20E+05
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I 8.00E-01 3.50E+01100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 6.00E+00 8.00E+03 5.90E+00 3.40E-01 6.00E+00 3.50E+05109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P 5.60E+03 2.50E+05107-15-3 VOCs ethylene diamine 9.00E-02 P 7.20E+03 3.20E+05106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I 5.00E-03 7.20E+02 5.00E-01 2.70E-04 1.80E-05 5.00E-03 3.20E+04 6.60E+01107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I 1.60E+05 7.00E+06111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I 8.00E+03 3.50E+05
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C 3.20E+00 4.20E+0296-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C 6.40E+00 2.20E+01 2.80E+02 2.90E+0384-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I 2.40E+05 1.10E+07
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 9 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
101200-48-0 Pesticides express 8.00E-03 I 6.40E+02 2.80E+0422224-92-6 Pesticides fenamiphos 2.50E-04 I 2.00E+01 8.80E+02
2164-17-2 Pesticides fluometuron 1.30E-02 I 1.00E+03 4.60E+04206-44-0 PAHs fluoranthene 4.00E-02 I 3.20E+03 6.30E+02 3.20E+01 1.40E+05
86-73-7 PAHs fluorene 4.00E-02 I 3.20E+03 1.00E+02 5.10E+00 1.40E+0516984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I 4.80E+03 2.10E+0559756-60-4 Pesticides fluridone 8.00E-02 I 6.40E+03 2.80E+0556425-91-3 Pesticides flurprimidol 4.00E-02 O 3.20E+03 1.40E+0566332-96-5 Pesticides flutolanil 5.00E-01 O 4.00E+04 1.80E+0669409-94-5 Pesticides fluvalinate 1.00E-02 I 8.00E+02 3.50E+04
133-07-3 Pesticides folpet 9.00E-02 O 7.20E+03 3.20E+0572178-02-0 Pesticides fomesafen 2.50E-03 O 2.00E+02 8.80E+03
944-22-9 Pesticides fonofos 2.00E-03 I 1.60E+02 7.00E+0350-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C 1.60E+04 4.80E+01 7.00E+05 6.30E+0364-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P 7.20E+04 3.20E+06
39148-24-8 Pesticides fosetyl-al 2.50E+00 O 2.00E+05 8.80E+06110-00-9 Furans furan 1.00E-03 I 8.00E+01 3.50E+03
67-45-8 SVOCs furazolidone 3.80E+00 H 2.60E-01 3.50E+0198-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I 2.40E+02 1.10E+04
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C 6.70E-01 8.80E+0160568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I 3.30E+01 4.40E+0377182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O 4.80E+02 2.10E+04
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I 3.20E+01 1.40E+031071-83-6 SVOCs glyphosate 1.00E-01 I 8.00E+03 3.50E+05
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 2.40E+02 1.10E+0469806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I 4.00E+00 1.80E+0279277-27-3 Pesticides harmony 4.30E-02 O 3.40E+03 1.50E+05
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 4.00E+01 2.20E-01 3.80E-02 1.90E-03 1.80E+03 2.90E+011024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 1.00E+00 1.10E-01 8.00E-02 4.00E-03 4.60E+01 1.40E+01
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X 2.40E+01 1.10E+0387-82-1 SVOCs hexabromobenzene 2.00E-03 I 1.60E+02 7.00E+03
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I 1.60E+01 7.00E+02118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 6.40E+01 6.30E-01 8.80E-01 4.40E-02 2.80E+03 8.20E+01
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 8.00E+01 1.30E+01 6.00E-01 3.00E-02 3.50E+03 1.70E+03319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 6.40E+02 1.60E-01 5.50E-04 2.80E-05 2.80E+04 2.10E+01319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 5.60E-01 2.30E-03 1.20E-04 7.30E+01608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I 5.60E-01 7.30E+01
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 4.80E+02 1.90E+02 9.60E+00 2.10E+0434465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I 1.60E-04 2.10E-02
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 5.60E+01 2.50E+01 4.30E-02 2.30E-03 2.50E+03 3.30E+0370-30-4 SVOCs hexachlorophene 3.00E-04 I 2.40E+01 1.10E+03
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H 4.80E+03 6.90E+01 1.80E+00 2.10E+05591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I 4.00E+02 1.80E+04
51235-04-2 Pesticides hexazinone 3.30E-02 I 2.60E+03 1.20E+05302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I 3.30E-01 4.40E+01
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I 3.30E-01 4.40E+017647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I 4.80E+01 2.10E+037783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P 3.20E+03 1.70E+01 1.40E+05 2.20E+0335554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O 2.00E+02 1.60E+01 8.80E+03 2.20E+0381335-37-7 Pesticides imazaquin 2.50E-01 I 2.00E+04 8.80E+05
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione 4.00E-02 I 3.20E+03 1.40E+05
7439-89-6 Metals iron 7.00E-01 P 5.60E+04 2.50E+06
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 10 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
78-83-1 VOCs isobutyl alcohol 3.00E-01 I 2.40E+04 1.10E+0678-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 1.60E+04 1.10E+03 2.30E-01 1.50E-02 7.00E+05 1.40E+05
33820-53-0 Pesticides isopropalin 1.50E-02 I 1.20E+03 5.30E+041832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I 8.00E+03 3.50E+05
82558-50-7 Pesticides isoxaben 5.00E-02 I 4.00E+03 1.80E+0577501-63-4 Pesticides lactofen 8.00E-03 O 6.40E+02 2.80E+04
7439-92-1 Metals LEAD LEAD NOTES 2.50E+02 3.00E+03 1.50E+02 1.00E+0358-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 1.00E-02 2.40E+01 9.10E-01 6.20E-03 3.30E-04 1.00E-02 1.10E+03 1.20E+02
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O 6.20E+02 2.70E+047791-03-9 Perchlorates lithium perchlorate 7.00E-04 I 5.60E+01 2.50E+03
83055-99-6 Pesticides londax 2.00E-01 I 1.60E+04 7.00E+05121-75-5 Pesticides malathion 2.00E-02 I 1.60E+03 7.00E+04108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I 8.00E+03 3.50E+05123-33-1 SVOCs maleic hydrazide 5.00E-01 I 4.00E+04 1.80E+06109-77-3 VOCs malononitrile 1.00E-04 P 8.00E+00 3.50E+02
8018-01-7 Pesticides mancozeb 3.00E-02 H 2.40E+03 1.10E+0512427-38-2 Pesticides maneb 5.00E-03 I 4.00E+02 1.80E+04
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I 3.70E+03 1.60E+05
950-10-7 Pesticides mephosfolan 9.00E-05 H 7.20E+00 3.20E+0224307-26-4 Pesticides mepiquat chloride 3.00E-02 I 2.40E+03 1.10E+05
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I 2.40E+01 1.10E+037439-97-6 Metals mercury 3.00E-04 I 8.57E-05 2.00E+00 2.10E+00 1.00E-01 2.00E+00
150-50-5 Pesticides merphos 3.00E-05 I 2.40E+00 1.10E+0257837-19-1 Pesticides metalaxyl 6.00E-02 I 4.80E+03 2.10E+05
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I 8.00E+00 3.50E+0210265-92-6 Pesticides methamidosphos 5.00E-05 I 4.00E+00 1.80E+02
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I 1.60E+05 7.00E+06950-37-8 Pesticides methidathion 1.50E-03 O 1.20E+02 5.30E+03
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I 2.00E+03 8.80E+0499-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C 2.00E+01 2.70E+0372-43-5 Pesticides methoxychlor 5.00E-03 I 4.00E+02 6.40E+01 3.20E+00 1.80E+04
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P 6.40E+02 2.80E+04109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P 4.00E+02 1.80E+04
79-20-9 VOCs methyl acetate 1.00E+00 X 8.00E+04 3.50E+0696-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H 2.40E+03 1.10E+0578-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I 4.80E+04 2.10E+06
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H 6.40E+03 2.80E+0522967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I 8.00E+00 3.50E+02
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I 1.10E+05 4.90E+0690-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P 5.60E+03 3.40E+01 2.50E+05 4.50E+0391-57-6 PAHs methyl naphthalene;2- 4.00E-03 I 3.20E+02 1.40E+04
298-00-0 Pesticides methyl parathion 2.50E-04 I 2.00E+01 8.80E+0225013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H 4.80E+02 2.10E+04
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H 5.60E+03 2.50E+051634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C 1.00E-01 5.60E+02 1.00E-01 7.20E-03 1.00E-01 7.30E+04
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I 4.00E+01 1.80E+0399-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P 1.60E+03 1.10E+02 7.00E+04 1.50E+04
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C 7.70E+00 1.00E+0395-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P 6.30E+01 8.20E+03
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P 1.60E+02 1.00E+01 7.00E+03 1.30E+03101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I 2.20E+01 2.90E+03
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H 8.00E+02 3.50E+0475-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 2.00E-02 4.80E+02 9.40E+01 2.10E-02 1.50E-03 2.00E-02 2.10E+04 6.60E+04
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-049016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C 6.30E-01 8.20E+0160-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P 8.00E+01 3.50E+03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 11 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
51218-45-2 Pesticides metolachlor 1.50E-01 I 1.20E+04 5.30E+0521087-64-9 Pesticides metribuzin 2.50E-02 I 2.00E+03 8.80E+04
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 1.60E+01 5.60E-02 7.00E+02 7.30E+002212-67-1 Pesticides molinate 2.00E-03 I 1.60E+02 7.00E+037439-98-7 Metals molybdenum 5.00E-03 I 4.00E+02 1.80E+04
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I 8.00E+03 3.50E+05300-76-5 Pesticides naled 2.00E-03 I 1.60E+02 7.00E+03
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 5.00E+00 1.60E+03 4.50E+00 2.40E-01 5.00E+00 7.00E+0415299-99-7 Pesticides napropamide 1.20E-01 O 9.60E+03 4.20E+05
104-51-8 VOCs n-butylbenzene 5.00E-02 P 4.00E+03 1.80E+05E715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C 8.80E+02 1.10E+00 3.90E+04 1.40E+02
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 1.60E+03 1.30E+02 6.50E+00 7.00E+0412035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C 8.80E+02 5.90E-01 3.90E+04 7.70E+0114797-55-8 Nutrients nitrate 1.60E+00 I 1.30E+05 5.60E+0614797-65-0 Nutrients nitrite 1.00E-01 I 8.00E+03 3.50E+05
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X 8.00E+02 3.50E+04100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P 3.20E+02 5.00E+01 1.40E+04 6.60E+03
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 1.60E+02 1.00E-01 6.50E-03 7.00E+0367-20-9 SVOCs nitrofurantoin 7.00E-02 H 5.60E+03 2.50E+0559-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C 7.70E-01 1.00E+02
556-88-7 SVOCs nitroguanidine 1.00E-01 I 8.00E+03 3.50E+0579-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I 3.60E-01 4.70E+0155-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I 6.70E-03 8.80E-0162-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 6.40E-01 2.00E-02 2.80E+01 2.60E+00
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I 1.90E-01 2.40E+01621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 1.40E-01 5.60E-05 3.90E-06 1.90E+01
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 2.00E+02 5.30E-01 2.80E-02 2.70E+04759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C 3.70E-02 4.90E+00
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I 4.50E-02 6.00E+00684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C 8.30E-03 1.10E+00930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I 4.80E-01 6.30E+01
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X 8.00E+00 3.50E+0288-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P 7.20E+01 4.50E+00 3.20E+03 6.00E+0299-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P 3.20E+02 6.30E+01 1.40E+04 8.20E+03
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon 1.50E-02 O 1.20E+03 5.30E+0485509-19-9 Pesticides nustar 2.00E-03 O 1.60E+02 7.00E+0332536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I 2.40E+02 1.10E+04
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I 4.00E+03 1.80E+05152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H 1.60E+02 7.00E+03
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O 1.10E+04 1.30E+02 4.90E+05 1.70E+0419666-30-9 Pesticides oxadiazon 5.00E-03 I 4.00E+02 1.80E+0423135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I 2.00E+03 8.80E+0442874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O 2.40E+03 1.40E+01 1.10E+05 1.80E+0376738-62-0 Herbicides paclobutrazol 1.30E-02 I 1.00E+03 4.60E+04
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I 3.60E+02 5.10E-01 1.60E+0456-38-2 Pesticides parathion 6.00E-03 H 4.80E+02 2.10E+04
1114-71-2 Pesticides pebulate 5.00E-02 H 4.00E+03 1.80E+0540487-42-1 Pesticides pendimethalin 3.00E-01 O 2.40E+04 1.10E+06
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H 1.60E+03 4.30E+01 7.00E+04 5.70E+0360348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I 8.00E+00 3.50E+0232534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I 1.60E+02 7.00E+03
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I 6.40E+01 4.20E-01 2.80E+0382-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H 2.40E+02 3.80E+00 1.10E+04 5.00E+0287-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 4.00E+02 2.50E+00 1.60E-02 8.80E-04 1.80E+04 3.30E+02
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I 5.60E+01 2.50E+0352645-53-1 Pesticides permethrin 5.00E-02 I 4.00E+03 1.80E+05
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 12 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
unavailable19 General Chemistry pH pH NOTES13684-63-4 Pesticides phenmedipham 2.40E-01 O 1.90E+04 8.40E+05
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 2.40E+04 1.10E+01 7.60E-01 1.10E+06106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H 1.50E+04 6.70E+05108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I 4.80E+02 2.10E+04
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H 3.20E+02 2.10E+01 1.40E+04 2.80E+0362-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I 6.40E+00 2.80E+0290-43-7 Phenols phenylphenol;2- 1.90E-03 H 5.30E+02 6.90E+04
298-02-2 Pesticides phorate 2.00E-04 H 1.60E+01 7.00E+0275-44-5 VOCs phosgene 3.00E-04 I 8.57E-05
732-11-6 Pesticides phosmet 2.00E-02 I 1.60E+03 7.00E+047803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I 2.40E+01 1.10E+037664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P 3.90E+06 1.70E+087723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I 1.60E+00 7.00E+01
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H 8.00E+04 3.50E+0685-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I 1.60E+05 7.00E+06
1918-02-1 Herbicides picloram 7.00E-02 I 5.60E+03 2.50E+0529232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O 5.60E+00 2.50E+0236355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C 5.60E-01 3.30E-02 2.50E+01 4.40E+00
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 1.00E+00 5.00E-01 1.40E-01 1.00E+01 6.60E+01151-50-8 Cyanides potassium cyanide 2.00E-03 I 1.60E+02 7.00E+03
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I 5.60E+01 2.50E+03506-61-6 Cyanides potassium silver cyanide 5.00E-03 I 4.00E+02 1.80E+04
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I 7.20E+02 6.70E+00 3.20E+04 8.80E+0226399-36-0 Pesticides profluralin 6.00E-03 H 4.80E+02 2.10E+04
1610-18-0 Pesticides prometon 1.50E-02 I 1.20E+03 5.30E+047287-19-6 Pesticides prometryn 4.00E-02 O 3.20E+03 1.40E+05
23950-58-5 Pesticides pronamide 7.50E-02 I 6.00E+03 2.60E+051918-16-7 Pesticides propachlor 1.30E-02 I 1.00E+03 4.60E+04
709-98-8 Pesticides propanil 5.00E-03 I 4.00E+02 1.80E+042312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O 3.20E+03 5.30E+00 1.40E+05 6.90E+02
107-19-7 VOCs propargyl alcohol 2.00E-03 I 1.60E+02 7.00E+03139-40-2 Pesticides propazine 2.00E-02 I 1.60E+03 7.00E+04122-42-9 Pesticides propham 2.00E-02 I 1.60E+03 7.00E+04
60207-90-1 Pesticides propiconazole 1.00E-01 O 8.00E+03 3.50E+05123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I 8.00E+01 3.50E+03103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X 8.00E+03 3.50E+05
57-55-6 Glycols propylene glycol 2.00E+01 P 1.60E+06 7.00E+076423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H 5.60E+04 2.50E+06107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H 5.60E+04 2.50E+06
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I 4.20E+00 5.50E+0281335-77-5 Pesticides pursuit 2.50E+00 O 2.00E+05 8.80E+0651630-58-1 Pesticides pydrin 2.50E-02 I 2.00E+03 8.80E+04
129-00-0 PAHs pyrene 3.00E-02 I 2.40E+03 6.50E+02 3.30E+01 1.10E+05110-86-1 VOCs pyridine 1.00E-03 I 8.00E+01 3.50E+03
13593-03-8 Pesticides quinalphos 5.00E-04 I 4.00E+01 1.80E+0391-22-5 SVOCs quinoline 3.00E+00 I 3.30E-01 4.40E+01
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 I 3.20E+02 1.30E+01 1.40E+04 1.60E+03E715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A
10453-86-8 Pesticides resmethrin 3.00E-02 I 2.40E+03 1.10E+05299-84-3 Pesticides ronnel 5.00E-02 H 4.00E+03 1.80E+05
83-79-4 Pesticides rotenone 4.00E-03 I 3.20E+02 1.40E+0478-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O 8.00E+00 3.50E+02
78587-05-0 Pesticides savey 2.50E-02 I 2.00E+03 8.80E+04
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 13 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
135-98-8 VOCs sec-butylbenzene 1.00E-01 X 8.00E+03 3.50E+057783-00-8 Metal compounds selenious acid 5.00E-03 I 4.00E+02 1.80E+047782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 4.00E+02 5.20E+00 2.60E-01 1.80E+04
74051-80-2 Pesticides sethoxydim 1.40E-01 O 1.10E+04 4.90E+057440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I 4.00E+02 1.40E+01 6.90E-01 1.80E+04
506-64-9 Cyanides silver cyanide 1.00E-01 I 8.00E+03 3.50E+05122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H 4.00E+02 8.30E+00 1.80E+04 1.10E+03
26628-22-8 Metal compounds sodium azide 4.00E-03 I 3.20E+02 1.40E+04143-33-9 Cyanides sodium cyanide 1.00E-03 I 8.00E+01 3.50E+03148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H 2.40E+03 3.70E+00 1.10E+05 4.90E+02
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I 1.60E+00 7.00E+0113718-26-8 Metal compounds sodium metavanadate 1.00E-03 H 8.00E+01 3.50E+03
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I 5.60E+01 2.50E+037440-24-6 Metals strontium 6.00E-01 I 4.80E+04 2.10E+06
57-24-9 SVOCs strychnine 3.00E-04 I 2.40E+01 1.10E+03100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I 1.60E+04 2.20E+00 1.20E-01 7.00E+05
88671-89-0 Pesticides systhane 2.50E-02 I 2.00E+03 8.80E+041746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 9.30E-05 1.30E-05 4.10E-03 1.70E-03
34014-18-1 Pesticides tebuthiuron 7.00E-02 I 5.60E+03 2.50E+053383-96-8 Pesticides temephos 2.00E-02 H 1.60E+03 7.00E+045902-51-2 Pesticides terbacil 1.30E-02 I 1.00E+03 4.60E+04
13071-79-9 SVOCs terbufos 2.50E-05 H 2.00E+00 8.80E+01886-50-0 Pesticides terbutryn 1.00E-03 I 8.00E+01 3.50E+03
98-06-6 VOCs tert-butylbenzene 1.00E-01 X 8.00E+03 3.50E+055436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I 8.00E+00 3.50E+02
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I 2.40E+01 1.10E+03630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I 2.40E+03 3.80E+01 1.10E+05 5.00E+03
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 1.60E+03 5.00E+00 1.20E-03 8.00E-05 7.00E+04 6.60E+02127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 5.00E-02 4.80E+02 4.80E+02 5.00E-02 2.80E-03 5.00E-02 2.10E+04 6.30E+04
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I 2.40E+03 2.70E-01 1.10E+055216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H 4.80E+00 5.00E-02 2.10E+02 6.60E+00
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H 2.40E+03 4.20E+01 1.10E+05 5.50E+033689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I 4.00E+01 1.80E+03
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I 8.00E-03 3.50E-01811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I 7.20E+04 3.20E+06
1314-32-5 Metal compounds thallic oxide 2.00E-05 S 1.60E+00 7.00E+01563-68-8 Metal compounds thallium acetate 1.00E-05 X 8.00E-01 3.50E+01
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X 1.60E+00 7.00E+017791-12-0 Metal compounds thallium chloride 1.00E-05 X 8.00E-01 3.50E+01
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X 8.00E-01 3.50E+0112039-52-0 Metal compounds thallium selenite 1.00E-05 S 8.00E-01 3.50E+01
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X 1.60E+00 7.00E+017440-28-0 Metals thallium, soluble salts 1.00E-05 X 8.00E-01 2.30E-01 1.10E-02 3.50E+01
28249-77-6 Pesticides thiobencarb 1.00E-02 I 8.00E+02 3.50E+0421564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H 2.40E+03 1.10E+0539196-18-4 Pesticides thiofanox 3.00E-04 H 2.40E+01 1.10E+0323564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O 2.20E+03 8.30E+01 9.50E+04 1.10E+04
137-26-8 Pesticides thiram 1.50E-02 O 1.20E+03 5.30E+047440-31-5 Metals tin 6.00E-01 H 4.80E+04 2.10E+06
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I 4.00E+01 3.30E+01 1.80E+03 4.40E+03108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 7.00E+00 6.40E+03 4.50E+00 2.70E-01 7.00E+00 2.80E+05
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C 2.60E+01 3.40E+03584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 2.60E+01 3.40E+03
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 2.60E+01 3.40E+0395-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X 1.60E+01 5.60E+00 7.00E+02 7.30E+02
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P 3.20E+02 3.30E+01 1.40E+04 4.40E+038001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 7.20E+00 9.10E-01 1.50E+00 7.60E-02 3.20E+02 1.20E+02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
93-72-1 Herbicides tp;2,4,5- 8.00E-03 I 6.40E+02 2.80E+04unavailable09 Petroleum tph, diesel range organics 2.00E+03 2.00E+03unavailable10 Petroleum tph, heavy oils 2.00E+03 2.00E+03unavailable11 Petroleum tph, mineral oils 4.00E+03 4.00E+03unavailable25 Petroleum tph: gasoline range organics, benzene present 3.00E+01 3.00E+01unavailable08 Petroleum tph: gasoline range organics, no detectable benzene 1.00E+02 1.00E+02
66841-25-6 Pesticides tralomethrin 7.50E-03 I 6.00E+02 2.60E+042303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O 2.00E+03 1.40E+01 8.80E+04 1.80E+03
82097-50-5 Pesticides triasulfuron 1.00E-02 I 8.00E+02 3.50E+04615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I 4.00E+02 1.80E+04688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide 3.00E-04 I 2.40E+01 1.10E+0310025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I 2.40E+06 1.10E+0876-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I 1.60E+03 1.40E+01 7.00E+04 1.90E+03
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H 3.40E+01 4.50E+03634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X 2.40E+00 1.40E+02 1.10E+02 1.90E+04120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 8.00E+02 3.40E+01 5.60E-01 2.90E-02 3.50E+04 4.50E+03
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 2.00E+00 1.60E+05 1.50E+00 8.40E-02 2.00E+00 7.00E+0679-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 3.20E+02 1.80E+01 1.70E-02 1.10E-03 1.40E+04 2.30E+0379-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 3.00E-02 4.00E+01 1.20E+01 2.50E-02 1.50E-03 3.00E-02 1.80E+03 2.90E+0375-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I 2.40E+04 1.10E+0695-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I 8.00E+03 2.90E+01 1.50E+00 3.50E+0588-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 8.00E+01 9.10E+01 4.60E-02 2.70E-03 3.50E+03 1.20E+0493-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I 8.00E+02 3.50E+04
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I 4.00E+02 1.80E+0496-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M 3.20E+02 6.30E-03 1.40E+04 4.40E+0096-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X 2.40E+02 1.10E+04
58138-08-2 Pesticides tridiphane 3.00E-03 I 2.40E+02 1.10E+04121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 I 6.00E+02 1.30E+02 2.60E+04 1.70E+04unavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P 8.00E+02 5.00E+01 3.50E+04 6.60E+03526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+02 3.50E+04
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+02 3.50E+04108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+02 3.50E+04
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I 2.40E+03 1.10E+05479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P 1.60E+02 7.00E+03
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A 1.60E+01 7.00E+027440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S 4.00E+02 1.60E+03 8.00E+01 1.80E+041314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I 7.20E+02 3.20E+041929-77-7 Pesticides vernam 1.00E-03 I 8.00E+01 3.50E+03
50471-44-8 Pesticides vinclozolin 1.20E-03 O 9.60E+01 4.20E+03108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H 8.00E+04 3.30E+01 2.30E+00 3.50E+06
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 2.40E+02 6.70E-01 1.70E-03 8.90E-05 1.10E+04 8.80E+0181-81-2 Pesticides warfarin 3.00E-04 I 2.40E+01 1.10E+03
8012-95-1 Petroleum white mineral oil 3.00E+00 P 2.40E+05 1.10E+07108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+04 1.30E+01 7.70E-01 7.00E+05
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+04 1.40E+01 8.40E-01 7.00E+05106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+04 1.70E+01 9.60E-01 7.00E+05
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I 9.00E+00 1.60E+04 1.40E+01 8.30E-01 9.00E+00 7.00E+057440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I 2.40E+04 6.00E+03 3.00E+02 1.10E+06
557-21-1 Cyanides zinc cyanide 5.00E-02 I 4.00E+03 1.80E+051314-84-7 Metal compounds zinc phosphide 3.00E-04 I 2.40E+01 1.10E+03
12122-67-7 Pesticides zineb 5.00E-02 I 4.00E+03 1.80E+05
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes83-32-9 PAHs acenaphthene
30560-19-1 Pesticides acephate75-07-0 VOCs acetaldehyde
34256-82-1 Pesticides acetochlor67-64-1 VOCs acetone75-86-5 VOCs acetone cyanohydrin75-05-8 VOCs acetonitrile98-86-2 SVOCs acetophenone
62476-59-9 Herbicides acifluorfen, sodium107-02-8 VOCs acrolein
79-06-1 VOCs acrylamide79-10-7 VOCs acrylic acid
107-13-1 VOCs acrylonitrile15972-60-8 Pesticides alachlor
1596-84-5 Pesticides alar116-06-3 Pesticides (Carbamate) aldicarb
1646-88-4 Pesticides (Carbamate) aldicarb sulfone309-00-2 Pesticides aldrin
74223-64-6 Pesticides ally107-18-6 VOCs allyl alcohol107-05-1 VOCs allyl chloride
7429-90-5 Metals aluminum20859-73-8 Metal compounds aluminum phosphide67485-29-4 Pesticides amdro
834-12-8 Pesticides ametryn591-27-5 Phenols aminophenol;m-
33089-61-1 Pesticides amitraz7664-41-7 Nutrients AMMONIA AMMONIA NOTES7790-98-9 Perchlorates ammonium perchlorate7773-06-0 Pesticides ammonium sulfamate
62-53-3 SVOCs aniline120-12-7 PAHs anthracene
7440-36-0 Metals antimony1314-60-9 Metal compounds antimony pentoxide
28300-74-5 Metal compounds antimony potassium tartrate1332-81-6 Metal compounds antimony tetroxide1309-64-4 Metal compounds antimony trioxide
74115-24-5 Pesticides apollo140-57-8 SVOCs aramite
12674-11-2 PCBs aroclor 101611097-69-1 PCBs aroclor 125411096-82-5 PCBs aroclor 1260
7440-38-2 Metals arsenic, inorganic7784-42-1 Gases arsine1332-21-4 Fibers ASBESTOS ASBESTOS NOTE
76578-14-8 Pesticides assure3337-71-1 Pesticides asulam1912-24-9 Pesticides atrazine
65195-55-3 Pesticides avermectin B1103-33-3 Pesticides azobenzene
7440-39-3 Metals barium and compounds114-26-1 Pesticides baygon
43121-43-3 Pesticides bayleton68359-37-5 Pesticides baythroid
1861-40-1 Pesticides benefin17804-35-2 Pesticides benomyl25057-89-0 Herbicides bentazon
100-52-7 SVOCs benzaldehyde
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
9.60E+02 2.10E+03 6.40E+02 1.60E+031.90E+01 4.20E+01
3.20E+02 7.00E+027.20E+03 1.60E+04
8.00E+02 1.80E+031.00E+02 2.30E+024.00E+00 8.80E+001.60E+01 2.30E-02 3.50E+01 8.80E-01 0.00E+004.00E+03 8.80E+033.20E+02 8.10E-02 7.00E+02 8.10E-01 3.50E+03 4.00E-01 8.60E+03 1.00E+011.60E+02 1.60E+00 3.50E+02 1.60E+01 0.00E+00 2.00E+00 2.00E+002.40E+03 4.90E+00 5.30E+03 4.90E+011.60E+01 3.50E+011.60E+01 3.50E+012.40E-01 2.60E-03 5.30E-01 2.60E-02 1.70E-02 8.20E-05 4.20E-02 2.00E-034.00E+03 8.80E+034.00E+01 8.80E+01
2.10E+00 2.10E+011.60E+04 3.50E+046.40E+00 1.40E+012.70E+02 6.00E+021.40E+02 3.20E+021.30E+03 2.80E+034.00E+01 8.80E+01
1.10E+01 2.50E+013.20E+03 7.00E+035.60E+01 7.70E+00 1.20E+02 7.70E+014.80E+03 1.10E+04 2.60E+04 6.50E+046.40E+00 1.40E+01 6.00E+00 6.00E+00 6.00E+00 1.00E+03 2.60E+038.00E+00 1.80E+011.40E+01 3.20E+016.40E+00 1.40E+01
2.10E+02 4.60E+028.00E+02 3.50E+00 1.80E+03 3.50E+011.10E+00 1.30E+00 2.50E+00 1.30E+01 5.80E-03 3.00E-03 1.50E-02 7.40E-023.20E-01 4.40E-02 7.00E-01 4.40E-01 1.70E-03 1.00E-04 4.20E-03 2.60E-03
4.40E-02 4.40E-015.00E+00 4.80E+00 5.80E-02 1.10E+01 5.80E-01 0.00E+00 1.00E+01 1.00E+01 1.80E+01 9.80E-02 4.40E+01 2.50E+00
2.80E-02 6.10E-027.00E+06 7.00E+06 7.00E+06
1.40E+02 3.20E+025.80E+02 1.30E+035.60E+02 3.80E-01 1.20E+03 3.80E+00 3.00E+00 3.00E+00 3.00E+006.40E+00 1.40E+01
8.00E-01 8.00E+003.20E+03 7.00E+03 2.00E+03 2.00E+03 2.00E+036.40E+01 1.40E+025.40E+02 1.20E+034.00E+02 8.80E+024.00E+01 8.80E+018.00E+02 1.80E+034.80E+02 1.10E+038.00E+02 1.10E+01 1.80E+03 1.10E+02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes71-43-2 VOCs BENZENE
108-98-5 SVOCs benzenethiol92-87-5 SVOCs benzidine56-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT98-07-7 VOCs benzotrichloride
100-51-6 SVOCs benzyl alcohol100-44-7 VOCs benzyl chloride
7440-41-7 Metals beryllium91-58-7 PAHs beta-chloronaphthalene
141-66-2 Pesticides bidrin82657-04-3 Pesticides biphenthrin
92-52-4 PAHs biphenyl;1,1-108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether111-44-4 SVOCs bis(2-chloroethyl)ether117-81-7 Phthalates bis(2-ethylhexyl) phthalate542-88-1 VOCs bis(chloromethyl)ether
80-05-7 Phenols bisphenol a7440-42-8 Metals boron
15541-45-4 Pesticides bromate79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene75-27-4 VOCs bromodichloromethane TTHM NOTES
593-60-2 VOCs bromoethene75-25-2 VOCs bromoform TTHM NOTES74-83-9 VOCs bromomethane
2104-96-3 Pesticides bromophos1689-84-5 Pesticides bromoxynil1689-99-2 Pesticides bromoxynil octanoate
106-99-0 VOCs butadiene;1,3-71-36-3 VOCs butanol;n-85-68-7 Phthalates butyl benzyl phthalate
2008-41-5 Pesticides butylate85-70-1 Phthalates butylphthalyl butylglycolate94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)-75-60-5 Pesticides cacodylic acid
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES
592-01-8 Cyanides calcium cyanide105-60-2 SVOCs caprolactam
2425-06-1 Pesticides captafol133-06-2 Pesticides captan
63-25-2 Pesticides (Carbamate) carbaryl1563-66-2 Pesticides (Carbamate) carbofuran
75-15-0 VOCs carbon disulfide56-23-5 VOCs carbon tetrachloride
55285-14-8 Pesticides carbosulfan5234-68-4 Pesticides carboxin1306-38-3 Metals cerium oxide and cerium compounds
302-17-0 VOCs chloral hydrate133-90-4 Herbicides chloramben118-75-2 Pesticides chloranil
12789-03-6 Pesticides chlordane143-50-0 Pesticides chlordecone (kepone)
16887-00-6 Nutrients chloride
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
5.00E+00 3.20E+01 8.00E-01 7.00E+01 8.00E+00 0.00E+00 5.00E+00 5.00E+00 2.00E+03 2.30E+01 5.00E+03 5.70E+028.00E+00 1.80E+014.80E+01 3.80E-04 1.10E+02 3.80E-03 8.90E+01 3.20E-04 2.20E+02 8.10E-03
1.00E-01 4.80E+00 2.30E-02 1.10E+01 8.80E-01 0.00E+00 2.00E-01 2.00E-01 2.60E+01 3.50E-02 6.50E+01 5.40E+00
6.40E+04 1.40E+053.40E-03 3.40E-02
8.00E+02 1.80E+031.60E+01 2.60E-01 3.50E+01 2.60E+003.20E+01 7.00E+01 4.00E+00 4.00E+00 4.00E+00 2.70E+02 6.80E+026.40E+02 1.40E+03 1.00E+03 2.60E+034.80E-01 1.10E+002.40E+02 5.30E+024.00E+03 5.50E+00 8.80E+03 5.50E+013.20E+02 6.30E-01 7.00E+02 6.30E+00 4.20E+04 3.70E+01 1.00E+05 9.40E+02
4.00E-02 4.00E-01 8.50E-01 2.10E+013.20E+02 6.30E+00 7.00E+02 6.30E+01 0.00E+00 6.00E+00 6.00E+00 4.00E+02 3.60E+00 1.00E+03 8.90E+01
2.00E-04 2.00E-038.00E+02 1.80E+033.20E+03 7.00E+036.40E+01 1.30E-01 1.40E+02 1.30E+00 0.00E+00 1.00E+01 1.00E+01
6.00E+01 6.00E+016.40E+01 1.40E+021.60E+02 7.10E-01 3.50E+02 7.10E+00 0.00E+00 8.00E+01 8.00E+01 1.40E+04 2.80E+01 3.50E+04 7.00E+02
1.60E+02 5.50E+00 3.50E+02 5.50E+01 0.00E+00 8.00E+01 8.00E+01 1.40E+04 2.20E+02 3.50E+04 5.50E+031.10E+01 2.50E+01 9.70E+02 2.40E+038.00E+01 1.80E+022.40E+02 8.80E-01 5.30E+02 8.80E+002.40E+02 8.80E-01 5.30E+02 8.80E+00
7.30E-02 7.30E-018.00E+02 1.80E+033.20E+03 4.60E+01 7.00E+03 4.60E+02 1.30E+03 8.20E+00 3.10E+03 2.10E+024.00E+02 8.80E+021.60E+04 3.50E+047.00E+01 1.50E+023.20E+02 7.00E+02
5.00E+00 8.00E+00 1.80E+01 5.00E+00 5.00E+00 5.00E+004.10E+01 1.00E+02
1.60E+01 3.50E+018.00E+03 1.80E+043.20E+01 5.80E-01 7.00E+01 5.80E+002.10E+03 3.80E+01 4.60E+03 3.80E+021.60E+03 3.50E+038.00E+01 1.80E+02 4.00E+01 4.00E+01 4.00E+018.00E+02 1.80E+033.20E+01 6.30E-01 7.00E+01 6.30E+00 0.00E+00 5.00E+00 5.00E+00 5.50E+02 4.90E+00 1.40E+03 1.20E+021.60E+02 3.50E+021.60E+03 3.50E+03
8.00E+02 1.80E+032.40E+02 5.30E+02
2.20E-01 2.20E+008.00E+00 2.50E-01 1.80E+01 2.50E+00 0.00E+00 2.00E+00 2.00E+00 9.20E-02 1.30E-03 2.30E-01 3.30E-024.80E+00 8.80E-03 1.10E+01 8.80E-02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes90982-32-4 Pesticides chlorimuron-ethyl
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS506-77-4 Cyanides chlorine cyanide
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS7758-19-2 Nutrients chlorite
75-68-3 VOCs chloro-1,1-difluoroethane;1-126-99-8 VOCs chloro-1,3-butadiene;2-
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4-95-69-2 SVOCs chloro-2-methylaniline;4-79-11-8 SVOCs chloroacetic acid
532-27-4 SVOCs chloroacetophenone;2-106-47-8 SVOCs chloroaniline;p-108-90-7 VOCs chlorobenzene510-15-6 Pesticides chlorobenzilate
74-11-3 Pesticides chlorobenzoic acid;p-98-56-6 VOCs chlorobenzotrifluoride;4-
109-69-3 VOCs chlorobutane;1-59-50-7 Phenols chlorocresol75-45-6 VOCs chlorodifluoromethane67-66-3 VOCs chloroform TTHM NOTES74-87-3 VOCs chloromethane
107-30-2 VOCs chloromethyl methyl ether88-73-3 Pesticides chloronitrobenzene;o-
100-00-5 Pesticides chloronitrobenzene;p-95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT
1897-45-6 Pesticides chlorothalonil95-49-8 VOCs chlorotoluene;o-
101-21-3 Pesticides chlorpropham2921-88-2 Pesticides chlorpyrifos5598-13-0 Pesticides chlorpyrifos-methyl
64902-72-3 Pesticides chlorsulfuron60238-56-4 Pesticides chlorthiophos
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt
E649830 VOCs coke oven emissions7440-50-8 Metals COPPER HARDNESS - DEPENDENT
544-92-3 Cyanides copper cyanide108-39-4 Phenols cresol;m-
95-48-7 Phenols cresol;o-106-44-5 Phenols cresol;p-123-73-9 VOCs crotonaldehyde
98-82-8 VOCs cumene21725-46-2 Pesticides cyanazine
57-12-5 Cyanides CYANIDE CYANIDE NOTES460-19-5 Cyanides cyanogen506-68-3 Cyanides cyanogen bromide110-82-7 VOCs cyclohexane108-94-1 VOCs cyclohexanone108-91-8 VOCs cyclohexylamine
68085-85-8 Pesticides cyhalothrin/karate52315-07-8 Pesticides cypermethrin66215-27-8 Pesticides cyromazine
1861-32-1 Herbicides dacthal75-99-0 Herbicides dalapon, sodium salt
39515-41-8 Pesticides danitol
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
1.40E+03 3.20E+038.00E+02 1.80E+03 4.00E+03 4.00E+03 4.00E+034.00E+02 8.80E+022.40E+02 5.30E+02 8.00E+02 8.00E+02 8.00E+024.80E+02 1.10E+03 8.00E+02 1.00E+03 1.00E+03
1.60E+02 3.50E+021.90E-01 1.90E+00
4.80E+01 8.80E-01 1.10E+02 8.80E+003.20E+01 7.00E+01 7.00E+01 6.00E+01 6.00E+01
3.20E+01 2.20E-01 7.00E+01 2.20E+001.60E+02 3.50E+02 1.00E+02 1.00E+02 1.00E+02 5.00E+03 1.30E+043.20E+02 8.00E-01 7.00E+02 8.00E+004.80E+02 1.10E+032.40E+01 5.30E+013.20E+02 7.00E+021.60E+03 3.50E+03
8.00E+01 1.40E+00 1.80E+02 1.40E+01 7.00E+01 8.00E+01 8.00E+01 6.90E+03 5.60E+01 1.70E+04 1.40E+03
1.80E-02 1.80E-014.80E+01 2.90E-01 1.10E+02 2.90E+005.60E+00 7.30E-01 1.20E+01 7.30E+004.00E+01 8.80E+01 9.70E+01 2.40E+022.40E+02 5.10E+00 5.30E+02 5.10E+011.60E+02 3.50E+028.00E+02 1.80E+031.60E+01 3.50E+011.60E+02 3.50E+028.00E+02 1.80E+031.30E+01 2.80E+01
5.00E+01 1.00E+02 1.00E+02 1.00E+022.40E+04 5.30E+04 2.40E+05 6.10E+054.80E+01 1.10E+02 4.90E+02 1.20E+03
4.80E+00 1.10E+01
6.40E+02 1.40E+03 1.30E+03 1.30E+03 1.30E+03 2.90E+03 7.20E+038.00E+01 1.80E+024.00E+02 8.80E+024.00E+02 8.80E+028.00E+02 1.80E+038.00E+00 2.30E-02 1.80E+01 2.30E-018.00E+02 1.80E+033.20E+01 1.00E-01 7.00E+01 1.00E+001.00E+01 2.20E+01 2.00E+02 2.00E+02 2.00E+02 1.60E+03 4.10E+038.00E+00 1.80E+017.20E+02 1.60E+03
4.00E+04 8.80E+041.60E+03 3.50E+031.60E+01 3.50E+013.70E+02 8.10E+028.00E+03 1.80E+041.60E+02 3.50E+022.40E+02 5.30E+02 2.00E+02 2.00E+02 2.00E+024.00E+02 8.80E+02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes94-82-6 Pesticides db;2,4-72-54-8 Pesticides ddd72-55-9 Pesticides dde50-29-3 Pesticides ddt
1163-19-5 PBDEs decabromodiphenyl ether8065-48-3 Pesticides demeton
103-23-1 Phthalates di(2-ethylhexyl)adipate2303-16-4 Pesticides diallate
333-41-5 Pesticides diazinon53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran96-12-8 Pesticides dibromo-3-chloropropane;1,2-
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4-124-48-1 VOCs dibromochloromethane TTHM NOTES
84-74-2 Phthalates di-butyl phthalate1918-00-9 Herbicides dicamba3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4-79-43-6 SVOCs dichloroacetic acid95-50-1 VOCs dichlorobenzene;1,2-
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4-
91-94-1 SVOCs dichlorobenzidine;3,3'-75-71-8 VOCs dichlorodifluoromethane75-34-3 VOCs dichloroethane;1,1-
107-06-2 VOCs dichloroethane;1,2-540-59-0 VOCs dichloroethylene,1,2- (mixed isomers)
75-35-4 VOCs dichloroethylene;1,1-156-59-2 VOCs dichloroethylene;1,2-,cis156-60-5 VOCs dichloroethylene;1,2-,trans120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4-78-87-5 VOCs dichloropropane;1,2-
616-23-9 SVOCs dichloropropanol;2,3-542-75-6 VOCs dichloropropene;1,3-
62-73-7 Pesticides dichlorvos77-73-6 VOCs dicyclopentadiene60-57-1 Pesticides dieldrin84-66-2 Phthalates diethyl phthalate
112-34-5 Glycols diethylene glycol monobutyl ether111-90-0 Glycols diethylene glycol monoethyl ether617-84-5 SVOCs diethylformamide
56-53-1 SVOCs diethylstilbesterol43222-48-6 Pesticides difenzoquat35367-38-5 Pesticides diflubenzuron
75-37-6 VOCs difluoroethane;1,1-1445-75-6 VOCs diisopropyl methylphosphonate
55290-64-7 Pesticides dimethipin60-51-5 Pesticides dimethoate
119-90-4 SVOCs dimethoxybenzidine;3,3'-131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4-95-68-1 SVOCs dimethylaniline;2,4-
121-69-7 VOCs dimethylaniline;N,N-119-93-7 SVOCs dimethylbenzidine;3,3'-
68-12-2 VOCs dimethylformamide;N,N-
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
4.80E+02 1.10E+034.80E-01 3.60E-01 1.10E+00 3.60E+00 1.50E-03 5.00E-04 3.60E-03 1.30E-024.80E+00 2.60E-01 1.10E+01 2.60E+00 1.50E-02 3.60E-04 3.60E-02 8.90E-03
3.00E-01 8.00E+00 2.60E-01 1.80E+01 2.60E+00 2.40E-02 3.60E-04 6.00E-02 8.90E-031.10E+02 1.30E+02 2.50E+02 1.30E+03 5.70E+03 2.90E+03 1.40E+04 7.20E+046.40E-01 1.40E+009.60E+03 7.30E+01 2.10E+04 7.30E+02 4.00E+02 4.00E+02 4.00E+02
1.40E+00 1.40E+011.10E+01 2.50E+01
1.60E+01 3.50E+011.60E+00 5.50E-02 3.50E+00 5.50E-01 0.00E+00 2.00E-01 2.00E-01
6.00E+01 6.00E+018.00E+01 1.80E+021.60E+02 5.20E-01 3.50E+02 5.20E+00 6.00E+01 8.00E+01 8.00E+01 1.40E+04 2.10E+01 3.50E+04 5.10E+021.60E+03 3.50E+03 2.90E+03 7.30E+034.80E+02 1.10E+03
4.00E+03 4.00E+03 4.00E+03
6.40E+01 1.80E+00 1.40E+02 1.80E+01 0.00E+00 6.00E+01 6.00E+017.20E+02 1.60E+03 6.00E+02 6.00E+02 6.00E+02 4.20E+03 1.00E+04
5.60E+02 8.10E+00 1.20E+03 8.10E+01 7.50E+01 7.50E+01 7.50E+01 3.30E+03 2.20E+01 8.20E+03 5.40E+021.90E-01 1.90E+00 4.60E-02 1.20E+00
1.60E+03 3.50E+031.60E+03 7.70E+00 3.50E+03 7.70E+01
5.00E+00 4.80E+01 4.80E-01 1.10E+02 4.80E+00 0.00E+00 5.00E+00 5.00E+00 1.30E+04 5.90E+01 3.20E+04 1.50E+037.20E+01 1.60E+024.00E+02 8.80E+02 7.00E+00 7.00E+00 7.00E+00 2.30E+04 5.80E+041.60E+01 3.50E+01 7.00E+01 7.00E+01 7.00E+011.60E+02 3.50E+02 1.00E+02 1.00E+02 1.00E+02 3.30E+04 8.20E+042.40E+01 5.30E+01 1.90E+02 4.80E+021.60E+02 3.50E+02 7.00E+01 7.00E+01 7.00E+013.20E+02 1.20E+00 7.00E+02 1.20E+01 0.00E+00 5.00E+00 5.00E+00 2.50E+04 4.30E+01 6.30E+04 1.10E+032.40E+01 5.30E+012.40E+02 4.40E-01 5.30E+02 4.40E+00 4.10E+04 3.40E+01 1.00E+05 8.50E+024.00E+00 1.50E-01 8.80E+00 1.50E+006.40E+02 1.40E+038.00E-01 5.50E-03 1.80E+00 5.50E-02 2.80E-02 8.70E-05 6.90E-02 2.20E-031.30E+04 2.80E+04 2.80E+04 7.10E+042.40E+02 5.30E+024.80E+02 1.10E+031.60E+01 3.50E+01
2.50E-04 2.50E-031.30E+03 2.90E+033.20E+02 7.00E+02
6.40E+02 1.40E+033.50E+02 7.70E+023.50E+01 7.70E+01
5.50E-02 5.50E-01
8.00E+02 1.80E+031.50E-01 1.50E+00
1.60E+01 2.20E-01 3.50E+01 2.20E+001.60E+01 1.60E+00 3.50E+01 1.60E+01
8.00E-03 8.00E-028.00E+02 1.80E+03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes57-14-7 VOCs dimethylhydrazine;1,1-
540-73-8 VOCs dimethylhydrazine;1,2-105-67-9 Phenols dimethylphenol;2,4-576-26-1 Phenols dimethylphenol;2,6-
95-65-8 Phenols dimethylphenol;3,4-99-65-0 Explosives dinitrobenzene;m-
528-29-0 SVOCs dinitrobenzene;o-100-25-4 SVOCs dinitrobenzene;p-131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6-
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6-121-14-2 Explosives dinitrotoluene;2,4-606-20-2 Explosives dinitrotoluene;2,6-117-84-0 Phthalates di-n-octyl phthalate
88-85-7 Herbicides dinoseb123-91-1 VOCs dioxane;1,4-957-51-7 Pesticides diphenamid122-39-4 Pesticides diphenylamine122-66-7 SVOCs diphenylhydrazine;1,2-
85-00-7 Pesticides diquat1937-37-7 Dyes direct black 382602-46-2 Dyes direct blue 6
16071-86-6 Dyes direct brown 95298-04-4 Pesticides disulfoton505-29-3 SVOCs dithiane;1,4-330-54-1 Pesticides (Carbamate) diuron534-52-1 Phenols DNOC
2439-10-3 Pesticides dodine115-29-7 Pesticides endosulfan
1031-07-8 Pesticides endosulfan sulfate959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall
72-20-8 Pesticides endrin7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin106-88-7 VOCs epoxybutane
16672-87-0 Pesticides ethephon563-12-2 Pesticides ethion111-15-9 VOCs ethoxyethanol acetate;2-110-80-5 VOCs ethoxyethanol;2-141-78-6 VOCs ethyl acetate140-88-5 VOCs ethyl acrylate
75-00-3 VOCs ethyl chloride759-94-4 Pesticides ethyl dipropylthiocarbamate;S-
60-29-7 VOCs ethyl ether97-63-2 VOCs ethyl methacrylate
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate100-41-4 VOCs ethylbenzene109-78-4 SVOCs ethylene cyanohydrin107-15-3 VOCs ethylene diamine106-93-4 VOCs ethylene dibromide (EDB)107-21-1 VOCs ethylene glycol111-76-2 Glycols ethylene glycol monobutyl ether (EGBE)
75-21-8 VOCs ethylene oxide96-45-7 SVOCs ethylene thiourea84-72-0 Phthalates ethylphthalyl ethylglycolate
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
8.00E-01 1.80E+008.00E-05 8.00E-04
1.60E+02 3.50E+02 5.50E+02 1.40E+034.80E+00 1.10E+018.00E+00 1.80E+011.60E+00 3.50E+001.60E+00 3.50E+001.60E+00 3.50E+003.20E+01 7.00E+013.20E+01 7.00E+01 3.50E+03 8.60E+03
1.40E+01 1.30E-01 3.20E+01 1.30E+003.20E+01 2.80E-01 7.00E+01 2.80E+00 1.40E+03 5.50E+00 3.40E+03 1.40E+024.80E+00 5.80E-02 1.10E+01 5.80E-011.60E+02 3.50E+021.60E+01 3.50E+01 7.00E+00 7.00E+00 7.00E+002.40E+02 4.40E-01 5.30E+02 4.40E+004.80E+02 1.10E+031.60E+03 3.50E+03 8.60E+03 2.20E+04
1.10E-01 1.10E+00 3.30E-01 8.10E+003.50E+01 7.70E+01 2.00E+01 2.00E+01 2.00E+01
1.20E-02 1.20E-011.20E-02 1.20E-011.30E-02 1.30E-01
6.40E-01 1.40E+001.60E+02 3.50E+023.20E+01 7.00E+011.30E+00 2.80E+003.20E+02 7.00E+029.60E+01 2.10E+02 5.80E+01 1.40E+029.60E+01 2.10E+02
3.20E+02 7.00E+02 1.00E+02 1.00E+02 1.00E+024.80E+00 1.10E+01 2.00E+00 2.00E+00 2.00E+00 2.00E-01 4.90E-01
4.80E+01 4.40E+00 1.10E+02 4.40E+01 0.00E+00
8.00E+01 1.80E+028.00E+00 1.80E+018.00E+02 1.80E+037.20E+02 1.60E+037.20E+03 1.60E+044.00E+01 9.10E-01 8.80E+01 9.10E+00
4.00E+02 8.80E+021.60E+03 3.50E+037.20E+02 1.60E+031.60E-01 3.50E-01
7.00E+02 8.00E+02 1.80E+03 7.00E+02 7.00E+02 7.00E+02 6.90E+03 1.70E+045.60E+02 1.20E+037.20E+02 1.60E+03
1.00E-02 7.20E+01 2.20E-02 1.60E+02 2.20E-01 0.00E+00 5.00E-02 5.00E-021.60E+04 3.50E+048.00E+02 1.80E+03
1.40E-01 1.40E+001.30E+00 1.90E+00 2.80E+00 1.90E+014.80E+04 1.10E+05
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 20 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes101200-48-0 Pesticides express
22224-92-6 Pesticides fenamiphos2164-17-2 Pesticides fluometuron
206-44-0 PAHs fluoranthene86-73-7 PAHs fluorene
16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES59756-60-4 Pesticides fluridone56425-91-3 Pesticides flurprimidol66332-96-5 Pesticides flutolanil69409-94-5 Pesticides fluvalinate
133-07-3 Pesticides folpet72178-02-0 Pesticides fomesafen
944-22-9 Pesticides fonofos50-00-0 VOCs formaldehyde64-18-6 VOCs formic acid
39148-24-8 Pesticides fosetyl-al110-00-9 Furans furan
67-45-8 SVOCs furazolidone98-01-1 VOCs furfural
531-82-8 SVOCs furium60568-05-0 Pesticides furmecyclox77182-82-2 Pesticides glufosinate-ammonium
765-34-4 VOCs glycidaldehyde1071-83-6 SVOCs glyphosate
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion69806-40-2 Pesticides haloxyfop-methyl79277-27-3 Pesticides harmony
76-44-8 Pesticides heptachlor1024-57-3 Pesticides heptachlor epoxide
142-82-5 VOCs heptane;n-87-82-1 SVOCs hexabromobenzene
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'-118-74-1 Pesticides hexachlorobenzene
87-68-3 VOCs hexachlorobutadiene319-84-6 Pesticides hexachlorocyclohexane;alpha319-85-7 Pesticides hexachlorocyclohexane;beta-608-73-1 SVOCs hexachlorocyclohexane;technical
77-47-4 Pesticides hexachlorocyclopentadiene34465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture
67-72-1 VOCs hexachloroethane70-30-4 SVOCs hexachlorophene
822-06-0 VOCs hexamethylene diisocyanate;1,6-110-54-3 VOCs hexane;n-591-78-6 VOCs hexanone;2-
51235-04-2 Pesticides hexazinone302-01-2 VOCs hydrazine
10034-93-2 SVOCs hydrazine sulfate7647-01-0 VOCs hydrogen chloride
74-90-8 Cyanides hydrogen cyanide7783-06-4 VOCs hydrogen sulfide
123-31-9 SVOCs hydroquinone35554-44-0 Pesticides imazalil81335-37-7 Pesticides imazaquin
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione
7439-89-6 Metals iron
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
1.30E+02 2.80E+024.00E+00 8.80E+002.10E+02 4.60E+026.40E+02 1.40E+03 9.00E+01 2.30E+026.40E+02 1.40E+03 3.50E+03 8.60E+039.60E+02 2.10E+03 4.00E+03 4.00E+03 4.00E+031.30E+03 2.80E+036.40E+02 1.40E+038.00E+03 1.80E+041.60E+02 3.50E+021.40E+03 3.20E+034.00E+01 8.80E+013.20E+01 7.00E+011.60E+03 2.10E+00 3.50E+03 2.10E+017.20E+03 1.60E+044.00E+04 8.80E+048.00E+00 1.80E+01
2.30E-02 2.30E-012.40E+01 5.30E+01
5.80E-02 5.80E-012.90E+00 2.90E+01
9.60E+01 2.10E+023.20E+00 7.00E+001.60E+03 3.50E+03 7.00E+02 7.00E+02 7.00E+02
1.50E+01 0.00E+00 1.50E+01 1.50E+014.00E+00 0.00E+00 4.00E+00 4.00E+00
4.80E+01 1.10E+028.00E-01 1.80E+006.90E+02 1.50E+038.00E+00 1.90E-02 1.80E+01 1.90E-01 0.00E+00 4.00E-01 4.00E-01 1.20E-01 1.30E-04 2.90E-01 3.20E-031.00E-01 4.80E-03 2.30E-01 4.80E-02 0.00E+00 2.00E-01 2.00E-01 3.00E-03 6.40E-05 7.50E-03 1.60E-032.40E+00 5.30E+003.20E+01 7.00E+013.20E+00 7.00E+001.30E+01 5.50E-02 2.80E+01 5.50E-01 0.00E+00 1.00E+00 1.00E+00 2.40E-01 4.70E-04 6.00E-01 1.20E-028.00E+00 5.60E-01 1.80E+01 5.60E+00 9.30E+02 3.00E+01 2.30E+03 7.50E+021.30E+02 1.40E-02 2.80E+02 1.40E-01 1.60E+02 7.90E-03 4.00E+02 2.00E-01
4.90E-02 4.90E-01 2.80E-02 6.90E-014.90E-02 4.90E-01
4.80E+01 1.10E+02 5.00E+01 5.00E+01 5.00E+01 3.60E+03 9.00E+031.40E-05 1.40E-04
5.60E+00 1.10E+00 1.20E+01 1.10E+01 2.10E+01 1.90E+00 5.20E+01 4.70E+014.80E+00 1.10E+01
4.80E+02 1.10E+034.00E+01 8.80E+015.30E+02 1.20E+03
1.50E-02 1.50E-012.90E-02 2.90E-01
4.80E+00 1.10E+01
6.40E+02 1.50E+00 1.40E+03 1.50E+014.00E+01 1.40E+00 8.80E+01 1.40E+014.00E+03 8.80E+03
6.40E+02 1.40E+031.10E+04 2.50E+04
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 21 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes78-83-1 VOCs isobutyl alcohol78-59-1 SVOCs isophorone
33820-53-0 Pesticides isopropalin1832-54-8 SVOCs isopropyl methyl phosphonic acid
82558-50-7 Pesticides isoxaben77501-63-4 Pesticides lactofen
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane
330-55-2 Pesticides (Carbamate) linuron7791-03-9 Perchlorates lithium perchlorate
83055-99-6 Pesticides londax121-75-5 Pesticides malathion108-31-6 SVOCs maleic anhydride123-33-1 SVOCs maleic hydrazide109-77-3 VOCs malononitrile
8018-01-7 Pesticides mancozeb12427-38-2 Pesticides maneb
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES
950-10-7 Pesticides mephosfolan24307-26-4 Pesticides mepiquat chloride
7487-94-7 Metal compounds mercuric chloride7439-97-6 Metals mercury
150-50-5 Pesticides merphos57837-19-1 Pesticides metalaxyl
126-98-7 VOCs methacrylonitrile10265-92-6 Pesticides methamidosphos
67-56-1 VOCs methanol950-37-8 Pesticides methidathion
16752-77-5 Pesticides (Carbamate) methomyl99-59-2 SVOCs methoxy-5-nitroaniline;2-72-43-5 Pesticides methoxychlor
110-49-6 VOCs methoxyethanol acetate;2-109-86-4 VOCs methoxyethanol;2-
79-20-9 VOCs methyl acetate96-33-3 VOCs methyl acrylate78-93-3 VOCs methyl ethyl ketone
108-10-1 VOCs methyl isobutyl ketone22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES
80-62-6 VOCs methyl methacrylate90-12-0 PAHs methyl naphthalene;1-91-57-6 PAHs methyl naphthalene;2-
298-00-0 Pesticides methyl parathion25013-15-4 VOCs methyl styrene
98-83-9 VOCs methyl styrene, alpha1634-04-4 VOCs methyl tert-butyl ether
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2-99-55-8 SVOCs methyl-5-nitroaniline;2-
636-21-5 SVOCs methylaniline hydrochloride;2-95-53-4 VOCs methylaniline;2-
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'-101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'-
74-95-3 VOCs methylene bromide75-09-2 VOCs methylene chloride
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI)9016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI)
101-77-9 SVOCs methylenebisbenzenamine;4,4-60-34-4 VOCs methylhydrazine
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
2.40E+03 5.30E+031.60E+03 4.60E+01 3.50E+03 4.60E+02 1.20E+05 1.60E+03 3.00E+05 3.90E+042.40E+02 5.30E+021.60E+03 3.50E+038.00E+02 1.80E+031.30E+02 2.80E+02
1.50E+01 0.00E+00 1.50E+01 1.50E+012.00E-01 4.80E+00 8.00E-02 1.10E+01 8.00E-01 2.00E-01 2.00E-01 2.00E-01 6.00E+00 4.50E-02 1.50E+01 1.10E+00
1.20E+02 2.70E+021.10E+01 2.50E+013.20E+03 7.00E+033.20E+02 7.00E+028.00E+02 1.80E+038.00E+03 1.80E+048.00E-01 1.80E+004.80E+02 1.10E+038.00E+01 1.80E+02
7.50E+02 1.60E+031.40E+00 3.20E+004.80E+02 1.10E+034.80E+00 1.10E+01 2.00E+00 2.00E+00 2.00E+00
2.00E+00 2.00E+00 2.00E+00 2.00E+004.80E-01 1.10E+009.60E+02 2.10E+038.00E-01 1.80E+008.00E-01 1.80E+001.60E+04 3.50E+042.40E+01 5.30E+014.00E+02 8.80E+02
1.80E+00 1.80E+018.00E+01 1.80E+02 4.00E+01 4.00E+01 4.00E+01 8.40E+00 2.10E+016.40E+01 1.40E+024.00E+01 8.80E+018.00E+03 1.80E+042.40E+02 5.30E+024.80E+03 1.10E+046.40E+02 1.40E+031.60E+00 3.50E+001.10E+04 2.50E+045.60E+02 1.50E+00 1.20E+03 1.50E+013.20E+01 7.00E+014.00E+00 8.80E+004.80E+01 1.10E+025.60E+02 1.20E+03
2.00E+01 2.40E+01 2.40E+028.00E+00 1.80E+013.20E+02 9.70E+00 7.00E+02 9.70E+01
6.70E-01 6.70E+002.70E+00 2.70E+01
3.20E+01 8.80E-01 7.00E+01 8.80E+001.90E+00 1.90E+01
8.00E+01 1.80E+025.00E+00 4.80E+01 5.80E+00 1.10E+02 2.20E+02 0.00E+00 5.00E+00 5.00E+00 1.70E+04 5.90E+02 4.30E+04 9.00E+04
5.50E-02 5.50E-018.00E+00 1.80E+01
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 22 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes51218-45-2 Pesticides metolachlor21087-64-9 Pesticides metribuzin
2385-85-5 Pesticides mirex2212-67-1 Pesticides molinate7439-98-7 Metals molybdenum
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS300-76-5 Pesticides naled
91-20-3 PAHs naphthalene15299-99-7 Pesticides napropamide
104-51-8 VOCs n-butylbenzeneE715532 Metals nickel refinery dust
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT12035-72-2 Metal compounds nickel subsulfide14797-55-8 Nutrients nitrate14797-65-0 Nutrients nitrite
88-74-4 SVOCs nitroaniline, 2-100-01-6 SVOCs nitroaniline, 4-
98-95-3 Explosives nitrobenzene67-20-9 SVOCs nitrofurantoin59-87-0 SVOCs nitrofurazone
556-88-7 SVOCs nitroguanidine79-46-9 VOCs nitropropane;2-
1116-54-7 SVOCs nitrosodiethanolamine;N-55-18-5 SVOCs nitrosodiethylamine;N-62-75-9 SVOCs nitrosodimethylamine;N-
924-16-3 VOCs nitroso-di-n-butylamine;N-621-64-7 SVOCs nitroso-di-n-propylamine;N-
86-30-6 SVOCs nitrosodiphenylamine;N-759-73-9 SVOCs nitroso-n-ethylurea;n-
10595-95-6 SVOCs nitroso-N-methylethylamine;N-684-93-5 SVOCs nitroso-n-methylurea,n-930-55-2 SVOCs nitrosopyrrolidine;N-
99-08-1 Explosives nitrotoluene, m-88-72-2 Explosives nitrotoluene, o-99-99-0 Explosives nitrotoluene, p-
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon85509-19-9 Pesticides nustar32536-52-0 PBDEs octabromodiphenyl ether
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine152-16-9 SVOCs octamethylpyrophosphoramide
19044-88-3 Pesticides oryzalin19666-30-9 Pesticides oxadiazon23135-22-0 Pesticides (Carbamate) oxamyl42874-03-3 Pesticides oxyfluorfen76738-62-0 Herbicides paclobutrazol
1910-42-5 Pesticides Paraquat Dichloride56-38-2 Pesticides parathion
1114-71-2 Pesticides pebulate40487-42-1 Pesticides pendimethalin
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5-60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5-32534-81-9 PBDEs pentabromodiphenyl ethers
608-93-5 SVOCs pentachlorobenzene82-68-8 Pesticides pentachloronitrobenzene87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT
14797-73-0 Perchlorates perchlorate and perchlorate salts52645-53-1 Pesticides permethrin
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
2.40E+03 5.30E+034.00E+02 8.80E+023.20E+00 4.90E-03 7.00E+00 4.90E-023.20E+01 7.00E+018.00E+01 1.80E+021.60E+03 3.50E+03 4.00E+03 4.00E+03 4.00E+033.20E+01 7.00E+01
1.60E+02 1.60E+02 3.50E+02 4.90E+03 1.20E+041.90E+03 4.20E+034.00E+02 8.80E+021.80E+02 9.60E-02 3.90E+02 9.60E-013.20E+02 7.00E+02 1.00E+02 1.10E+03 2.80E+031.80E+02 5.10E-02 3.90E+02 5.10E-012.60E+04 5.60E+04 1.00E+04 1.00E+04 1.00E+041.60E+03 3.50E+03 1.00E+03 1.00E+03 1.00E+031.60E+02 3.50E+026.40E+01 4.40E+00 1.40E+02 4.40E+011.60E+01 3.50E+01 1.80E+03 4.50E+031.10E+03 2.50E+03
6.70E-02 6.70E-011.60E+03 3.50E+03
3.10E-02 3.10E-012.90E-04 2.90E-03
6.40E-02 8.60E-04 1.40E-01 8.60E-03 8.00E+02 4.90E+00 2.00E+03 1.20E+028.10E-03 8.10E-021.30E-02 1.30E-01 8.20E-01 2.00E+011.80E+01 1.80E+02 9.70E+00 2.40E+023.20E-03 3.20E-024.00E-03 4.00E-027.30E-04 7.30E-032.10E-02 2.10E-01
8.00E-01 1.80E+007.20E+00 2.00E-01 1.60E+01 2.00E+003.20E+01 2.70E+00 7.00E+01 2.70E+01
2.40E+02 5.30E+023.20E+01 7.00E+014.80E+01 1.10E+02 2.40E+03 6.10E+038.00E+02 1.80E+033.20E+01 7.00E+012.20E+03 1.10E+01 4.90E+03 1.10E+028.00E+01 1.80E+024.00E+02 8.80E+02 2.00E+02 2.00E+02 2.00E+024.80E+02 1.20E+00 1.10E+03 1.20E+012.10E+02 4.60E+027.20E+01 1.60E+029.60E+01 2.10E+024.00E+02 8.80E+024.80E+03 1.10E+043.20E+02 3.80E+00 7.00E+02 3.80E+011.60E+00 3.50E+00 3.20E-02 8.00E-023.20E+01 7.00E+011.30E+01 2.80E+014.80E+01 3.40E-01 1.10E+02 3.40E+008.00E+01 2.20E-01 1.80E+02 2.20E+00 0.00E+00 1.00E+00 1.00E+00 1.20E+03 1.50E+00 2.90E+03 3.70E+011.10E+01 2.50E+018.00E+02 1.80E+03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notesunavailable19 General Chemistry pH pH NOTES
13684-63-4 Pesticides phenmedipham108-95-2 Phenols phenol106-50-3 SVOCs phenylenediamine, p-108-45-2 SVOCs phenylenediamine;m-
95-54-5 SVOCs phenylenediamine;o-62-38-4 Metals (organometallic) phenylmercuric acetate90-43-7 Phenols phenylphenol;2-
298-02-2 Pesticides phorate75-44-5 VOCs phosgene
732-11-6 Pesticides phosmet7803-51-2 Gases phosphine7664-38-2 SVOCs phosphoric acid7723-14-0 Nonmetal inorganics phosphorus
100-21-0 Phthalates phthalic acid;p-85-44-9 Phthalates phthalic anhydride
1918-02-1 Herbicides picloram29232-93-7 Pesticides pirimiphos-methyl36355-01-8 PBBs polybrominated biphenyls
1336-36-3 PCBs polychlorinated biphenyls (PCBs)151-50-8 Cyanides potassium cyanide
7778-74-7 Perchlorates potassium perchlorate506-61-6 Cyanides potassium silver cyanide
67747-09-5 Pesticides prochloraz (not in HSDB)26399-36-0 Pesticides profluralin
1610-18-0 Pesticides prometon7287-19-6 Pesticides prometryn
23950-58-5 Pesticides pronamide1918-16-7 Pesticides propachlor
709-98-8 Pesticides propanil2312-35-8 Pesticides propargite
107-19-7 VOCs propargyl alcohol139-40-2 Pesticides propazine122-42-9 Pesticides propham
60207-90-1 Pesticides propiconazole123-38-6 VOCs propionaldehyde
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2-103-65-1 VOCs propylbenzene;n-
57-55-6 Glycols propylene glycol6423-43-4 Glycols propylene glycol dinitrate;1,2-
52125-53-8 Glycols propylene glycol monoethyl ether107-98-2 Glycols propylene glycol monomethyl ether
75-56-9 VOCs propylene oxide81335-77-5 Pesticides pursuit51630-58-1 Pesticides pydrin
129-00-0 PAHs pyrene110-86-1 VOCs pyridine
13593-03-8 Pesticides quinalphos91-22-5 SVOCs quinoline
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdxE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE
10453-86-8 Pesticides resmethrin299-84-3 Pesticides ronnel
83-79-4 Pesticides rotenone78-48-8 Pesticides s,s;s-tributylphosphorotrithioate
78587-05-0 Pesticides savey
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
3.80E+03 8.40E+032.40E+03 5.30E+03 5.60E+05 1.40E+063.00E+03 6.70E+039.60E+01 2.10E+026.40E+01 1.90E+00 1.40E+02 1.90E+011.30E+00 2.80E+00
4.60E+01 4.60E+023.20E+00 7.00E+00
3.20E+02 7.00E+022.40E+00 5.30E+003.90E+05 8.60E+051.60E-01 3.50E-011.60E+04 3.50E+043.20E+04 7.00E+041.10E+03 2.50E+03 5.00E+02 5.00E+02 5.00E+021.10E+00 2.50E+001.10E-01 2.90E-03 2.50E-01 2.90E-02
1.00E-01 4.40E-02 4.40E-01 0.00E+00 5.00E-01 5.00E-01 1.00E-04 2.60E-033.20E+01 7.00E+011.10E+01 2.50E+018.00E+01 1.80E+021.40E+02 5.80E-01 3.20E+02 5.80E+009.60E+01 2.10E+022.40E+02 5.30E+026.40E+02 1.40E+031.20E+03 2.60E+032.10E+02 4.60E+028.00E+01 1.80E+023.20E+02 2.30E-01 7.00E+02 2.30E+001.60E+01 3.50E+013.20E+02 7.00E+023.20E+02 7.00E+021.60E+03 3.50E+03
1.60E+01 3.50E+018.00E+02 1.80E+031.60E+05 3.50E+05
5.60E+03 1.20E+045.60E+03 1.20E+04
1.80E-01 1.80E+004.00E+04 8.80E+044.00E+02 8.80E+024.80E+02 1.10E+03 2.60E+03 6.50E+038.00E+00 1.80E+018.00E+00 1.80E+01
1.50E-02 1.50E-013.00E+005.00E+00 0.00E+00 5.00E+00 5.00E+00
6.40E+01 1.10E+00 1.40E+02 1.10E+01
4.80E+02 1.10E+038.00E+02 1.80E+036.40E+01 1.40E+021.60E+00 3.50E+004.00E+02 8.80E+02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 24 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes135-98-8 VOCs sec-butylbenzene
7783-00-8 Metal compounds selenious acid7782-49-2 Metals selenium and compounds
74051-80-2 Pesticides sethoxydim7440-22-4 Metals SILVER HARDNESS - DEPENDENT
506-64-9 Cyanides silver cyanide122-34-9 Pesticides simazine
26628-22-8 Metal compounds sodium azide143-33-9 Cyanides sodium cyanide148-18-5 Metals (organometallic) sodium diethyldithiocarbamate
62-74-8 Metals (organometallic) sodium fluoroacetate13718-26-8 Metal compounds sodium metavanadate
7601-89-0 Perchlorates sodium perchlorate7440-24-6 Metals strontium
57-24-9 SVOCs strychnine100-42-5 VOCs styrene
88671-89-0 Pesticides systhane1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES
34014-18-1 Pesticides tebuthiuron3383-96-8 Pesticides temephos5902-51-2 Pesticides terbacil
13071-79-9 SVOCs terbufos886-50-0 Pesticides terbutryn
98-06-6 VOCs tert-butylbenzene5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4'
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5-630-20-6 VOCs tetrachloroethane;1,1,1,2-
79-34-5 VOCs tetrachloroethane;1,1,2,2-127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,-
961-11-5 Pesticides tetrachlorvinphos3689-24-5 Pesticides tetraethyl dithiopyrophosphate
78-00-2 Metals (organometallic) tetraethyl lead811-97-2 VOCs tetrafluoroethane;1,1,1,2-109-99-9 Furans tetrahydrofuran
1314-32-5 Metal compounds thallic oxide563-68-8 Metal compounds thallium acetate
6533-73-9 Metal compounds thallium carbonate7791-12-0 Metal compounds thallium chloride
10102-45-1 Metal compounds thallium nitrate12039-52-0 Metal compounds thallium selenite
7446-18-6 Metal compounds thallium(I) sulfate7440-28-0 Metals thallium, soluble salts
28249-77-6 Pesticides thiobencarb21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2-39196-18-4 Pesticides thiofanox23564-05-8 Pesticides thiophanate-methyl
137-26-8 Pesticides thiram7440-31-5 Metals tin
118-96-7 Explosives tnt108-88-3 VOCs toluene
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6-584-84-9 VOCs toluene-2,4-diisocyanate
91-08-7 VOCs toluene-2,6-diisocyanate95-70-5 SVOCs toluenediamine;2,5-
106-49-0 SVOCs toluidine;p-8001-35-2 Pesticides toxaphene
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
8.00E+02 1.80E+038.00E+01 1.80E+028.00E+01 1.80E+02 5.00E+01 5.00E+01 5.00E+01 2.70E+03 6.80E+032.20E+03 4.90E+038.00E+01 1.80E+02 2.60E+04 6.50E+041.60E+03 3.50E+038.00E+01 7.30E-01 1.80E+02 7.30E+00 4.00E+00 4.00E+00 4.00E+003.20E+01 7.00E+011.60E+01 3.50E+014.80E+02 3.20E-01 1.10E+03 3.20E+003.20E-01 7.00E-011.60E+01 3.50E+011.10E+01 2.50E+019.60E+03 2.10E+044.80E+00 1.10E+011.60E+03 3.50E+03 1.00E+02 1.00E+02 1.00E+024.00E+02 8.80E+021.10E-05 6.70E-07 2.50E-05 6.70E-06 0.00E+00 3.00E-05 3.00E-05 3.60E-07 1.00E-08 9.10E-07 2.50E-071.10E+03 2.50E+033.20E+02 7.00E+022.10E+02 4.60E+024.00E-01 8.80E-011.60E+01 3.50E+018.00E+02 1.80E+031.60E+00 3.50E+004.80E+00 1.10E+012.40E+02 1.70E+00 5.30E+02 1.70E+011.60E+02 2.20E-01 3.50E+02 2.20E+00 1.00E+04 6.50E+00 2.60E+04 1.60E+02
5.00E+00 4.80E+01 2.10E+01 1.10E+02 2.10E+02 0.00E+00 5.00E+00 5.00E+00 5.00E+02 1.00E+02 1.30E+03 2.50E+034.80E+02 1.10E+039.60E-01 4.40E-03 2.10E+00 4.40E-024.80E+02 3.60E+00 1.10E+03 3.60E+018.00E+00 1.80E+018.00E-04 1.80E-03
7.20E+03 1.60E+043.20E-01 7.00E-011.60E-01 3.50E-013.20E-01 7.00E-011.60E-01 3.50E-011.60E-01 3.50E-011.60E-01 3.50E-013.20E-01 7.00E-011.60E-01 3.50E-01 5.00E-01 2.00E+00 2.00E+00 2.20E-01 5.60E-011.60E+02 3.50E+024.80E+02 1.10E+034.80E+00 1.10E+014.30E+02 7.30E+00 9.50E+02 7.30E+011.20E+02 2.60E+029.60E+03 2.10E+048.00E+00 2.90E+00 1.80E+01 2.90E+01
1.00E+03 6.40E+02 1.40E+03 1.00E+03 1.00E+03 1.00E+03 1.90E+04 4.80E+041.10E+00 1.10E+011.10E+00 1.10E+011.10E+00 1.10E+01
3.20E+00 4.90E-01 7.00E+00 4.90E+003.20E+01 1.50E+00 7.00E+01 1.50E+011.40E+00 8.00E-02 3.20E+00 8.00E-01 0.00E+00 3.00E+00 3.00E+00 1.80E-02 4.50E-04 4.50E-02 1.10E-02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 25 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes93-72-1 Herbicides tp;2,4,5-
unavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin2303-17-5 Pesticides triallate
82097-50-5 Pesticides triasulfuron615-54-3 VOCs tribromobenzene;1,2,4-688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2-76-03-9 SVOCs trichloroacetic acid
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6-634-93-5 SVOCs trichloroaniline;2,4,6-120-82-1 VOCs trichlorobenzene;1,2,4-
71-55-6 VOCs trichloroethane;1,1,1-79-00-5 VOCs trichloroethane;1,1,2-79-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES75-69-4 VOCs trichlorofluoromethane95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5-
598-77-6 VOCs trichloropropane;1,1,2-96-18-4 VOCs trichloropropane;1,2,3-96-19-5 VOCs trichloropropene;1,2,3-
58138-08-2 Pesticides tridiphane121-44-8 VOCs triethylamine
1582-09-8 Pesticides trifluralinunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate526-73-8 VOCs trimethylbenzene;1,2,3-
95-63-6 VOCs trimethylbenzene;1,2,4-108-67-8 VOCs trimethylbenzene;1,3,5-
99-35-4 Explosives trinitrobenzene;1,3,5-479-45-8 Explosives trinitrophenylmethylnitramine
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS7440-62-2 Metals vanadium1314-62-1 Metal compounds vanadium pentoxide1929-77-7 Pesticides vernam
50471-44-8 Pesticides vinclozolin108-05-4 VOCs vinyl acetate
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES81-81-2 Pesticides warfarin
8012-95-1 Petroleum white mineral oil108-38-3 VOCs xylene;m-
95-47-6 VOCs xylene;o-106-42-3 VOCs xylene;p-
1330-20-7 VOCs xylenes7440-66-6 Metals ZINC HARDNESS - DEPENDENT
557-21-1 Cyanides zinc cyanide1314-84-7 Metal compounds zinc phosphide
12122-67-7 Pesticides zineb
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
1.30E+02 2.80E+02 5.00E+01 5.00E+01 5.00E+015.00E+025.00E+025.00E+028.00E+021.00E+03
1.20E+02 2.60E+024.00E+02 1.20E+00 8.80E+02 1.20E+011.60E+02 3.50E+028.00E+01 1.80E+02
4.80E+00 1.10E+014.00E+03 4.00E+03 4.00E+03
2.40E+05 5.30E+053.20E+02 1.30E+00 7.00E+02 1.30E+01 2.00E+01 6.00E+01 6.00E+01
3.00E+00 3.00E+014.80E-01 1.30E+01 1.10E+00 1.30E+028.00E+01 1.50E+00 1.80E+02 1.50E+01 7.00E+01 7.00E+01 7.00E+01 2.30E+02 2.00E+00 5.70E+02 4.90E+01
2.00E+02 1.60E+04 3.50E+04 2.00E+02 2.00E+02 2.00E+02 9.30E+05 2.30E+063.20E+01 7.70E-01 7.00E+01 7.70E+00 3.00E+00 5.00E+00 5.00E+00 2.30E+03 2.50E+01 5.80E+03 6.30E+02
5.00E+00 4.00E+00 5.40E-01 8.80E+00 9.50E+00 0.00E+00 5.00E+00 5.00E+00 1.20E+02 4.90E+00 2.90E+02 3.20E+022.40E+03 5.30E+038.00E+02 1.80E+038.00E+00 4.00E+00 1.80E+01 4.00E+01 1.70E+01 3.90E+00 4.30E+01 9.80E+011.60E+02 3.50E+024.00E+01 8.80E+013.20E+01 3.80E-04 7.00E+01 1.50E-022.40E+01 5.30E+014.80E+01 1.10E+02
1.20E+02 1.10E+01 2.60E+02 1.10E+028.00E+01 8.00E+01
8.00E+01 2.20E+00 1.80E+02 2.20E+018.00E+01 1.80E+028.00E+01 1.80E+028.00E+01 1.80E+024.80E+02 1.10E+031.60E+01 3.50E+013.20E+00 7.00E+00 0.00E+00 3.00E+01 3.00E+018.00E+01 1.80E+021.40E+02 3.20E+028.00E+00 1.80E+011.90E+01 4.20E+018.00E+03 1.80E+04
2.00E-01 2.40E+01 2.90E-02 5.30E+01 2.90E-01 0.00E+00 2.00E+00 2.00E+00 6.60E+03 3.70E+00 1.70E+04 9.20E+012.40E+00 5.30E+004.80E+04 1.10E+051.60E+03 3.50E+031.60E+03 3.50E+031.60E+03 3.50E+03
1.00E+03 1.60E+03 3.50E+03 1.00E+04 1.00E+04 1.00E+044.80E+03 1.10E+04 1.70E+04 4.10E+048.00E+02 1.80E+034.80E+00 1.10E+018.00E+02 1.80E+03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 26 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes83-32-9 PAHs acenaphthene
30560-19-1 Pesticides acephate75-07-0 VOCs acetaldehyde
34256-82-1 Pesticides acetochlor67-64-1 VOCs acetone75-86-5 VOCs acetone cyanohydrin75-05-8 VOCs acetonitrile98-86-2 SVOCs acetophenone
62476-59-9 Herbicides acifluorfen, sodium107-02-8 VOCs acrolein
79-06-1 VOCs acrylamide79-10-7 VOCs acrylic acid
107-13-1 VOCs acrylonitrile15972-60-8 Pesticides alachlor
1596-84-5 Pesticides alar116-06-3 Pesticides (Carbamate) aldicarb
1646-88-4 Pesticides (Carbamate) aldicarb sulfone309-00-2 Pesticides aldrin
74223-64-6 Pesticides ally107-18-6 VOCs allyl alcohol107-05-1 VOCs allyl chloride
7429-90-5 Metals aluminum20859-73-8 Metal compounds aluminum phosphide67485-29-4 Pesticides amdro
834-12-8 Pesticides ametryn591-27-5 Phenols aminophenol;m-
33089-61-1 Pesticides amitraz7664-41-7 Nutrients AMMONIA AMMONIA NOTES7790-98-9 Perchlorates ammonium perchlorate7773-06-0 Pesticides ammonium sulfamate
62-53-3 SVOCs aniline120-12-7 PAHs anthracene
7440-36-0 Metals antimony1314-60-9 Metal compounds antimony pentoxide
28300-74-5 Metal compounds antimony potassium tartrate1332-81-6 Metal compounds antimony tetroxide1309-64-4 Metal compounds antimony trioxide
74115-24-5 Pesticides apollo140-57-8 SVOCs aramite
12674-11-2 PCBs aroclor 101611097-69-1 PCBs aroclor 125411096-82-5 PCBs aroclor 1260
7440-38-2 Metals arsenic, inorganic7784-42-1 Gases arsine1332-21-4 Fibers ASBESTOS ASBESTOS NOTE
76578-14-8 Pesticides assure3337-71-1 Pesticides asulam1912-24-9 Pesticides atrazine
65195-55-3 Pesticides avermectin B1103-33-3 Pesticides azobenzene
7440-39-3 Metals barium and compounds114-26-1 Pesticides baygon
43121-43-3 Pesticides bayleton68359-37-5 Pesticides baythroid
1861-40-1 Pesticides benefin17804-35-2 Pesticides benomyl25057-89-0 Herbicides bentazon
100-52-7 SVOCs benzaldehyde
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
1.10E+02 3.00E+01 7.00E+01
3.00E+00 3.00E+00 1.00E+00 3.00E+00
1.90E-02 6.10E-02
2.50E+00 3.00E+00 1.90E-03 5.70E-06 4.10E-08 7.70E-07 7.10E-01 1.30E+00 1.90E-03
2.30E+02 3.50E+01
3.10E+03 1.00E+02 3.00E+021.20E+01 6.00E+00 5.60E+00
3.60E+02 3.40E+02 1.90E+02 1.50E+02 1.00E+01 1.80E-02 1.80E-02 6.90E+01 6.90E+01 3.60E+01 3.60E+01
7.00E+06 7.00E+06
1.00E+03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 27 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes71-43-2 VOCs BENZENE
108-98-5 SVOCs benzenethiol92-87-5 SVOCs benzidine56-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT98-07-7 VOCs benzotrichloride
100-51-6 SVOCs benzyl alcohol100-44-7 VOCs benzyl chloride
7440-41-7 Metals beryllium91-58-7 PAHs beta-chloronaphthalene
141-66-2 Pesticides bidrin82657-04-3 Pesticides biphenthrin
92-52-4 PAHs biphenyl;1,1-108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether111-44-4 SVOCs bis(2-chloroethyl)ether117-81-7 Phthalates bis(2-ethylhexyl) phthalate542-88-1 VOCs bis(chloromethyl)ether
80-05-7 Phenols bisphenol a7440-42-8 Metals boron
15541-45-4 Pesticides bromate79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene75-27-4 VOCs bromodichloromethane TTHM NOTES
593-60-2 VOCs bromoethene75-25-2 VOCs bromoform TTHM NOTES74-83-9 VOCs bromomethane
2104-96-3 Pesticides bromophos1689-84-5 Pesticides bromoxynil1689-99-2 Pesticides bromoxynil octanoate
106-99-0 VOCs butadiene;1,3-71-36-3 VOCs butanol;n-85-68-7 Phthalates butyl benzyl phthalate
2008-41-5 Pesticides butylate85-70-1 Phthalates butylphthalyl butylglycolate94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)-75-60-5 Pesticides cacodylic acid
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES
592-01-8 Cyanides calcium cyanide105-60-2 SVOCs caprolactam
2425-06-1 Pesticides captafol133-06-2 Pesticides captan
63-25-2 Pesticides (Carbamate) carbaryl1563-66-2 Pesticides (Carbamate) carbofuran
75-15-0 VOCs carbon disulfide56-23-5 VOCs carbon tetrachloride
55285-14-8 Pesticides carbosulfan5234-68-4 Pesticides carboxin1306-38-3 Metals cerium oxide and cerium compounds
302-17-0 VOCs chloral hydrate133-90-4 Herbicides chloramben118-75-2 Pesticides chloranil
12789-03-6 Pesticides chlordane143-50-0 Pesticides chlordecone (kepone)
16887-00-6 Nutrients chloride
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
4.40E-01 5.80E-01
2.00E-05 1.40E-041.40E-02 1.60E-04 1.20E-031.40E-03 1.60E-05 1.20E-041.40E-02 1.60E-04 1.20E-031.40E-02 1.60E-03 1.20E-02
1.70E+02 1.00E+02 8.00E+02
4.00E+02 2.00E+022.00E-02 3.00E-022.30E-01 4.50E-02 3.20E-01
1.50E-04
7.70E-01 7.30E-01 9.50E-01
5.80E+00 4.60E+00 7.00E+005.20E+02 3.00E+02 1.00E+02
5.60E-01 1.30E-02 1.00E-01
3.70E+00 1.80E+00 1.00E+00 7.20E-01 4.20E+01 3.30E+01 9.30E+00 7.90E+003.70E+00 1.80E+00 1.00E+00 7.20E-01 4.20E+01 3.30E+01 9.30E+00 7.90E+00
2.10E+00 2.10E+00 1.60E+00
2.00E-01 4.00E-01
2.40E+00 2.40E+00 4.30E-03 4.30E-03 9.30E-05 2.20E-05 3.10E-04 9.00E-02 9.00E-02 4.00E-03 4.00E-03
8.60E+05 8.60E+05 2.30E+05 2.30E+05
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 28 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes90982-32-4 Pesticides chlorimuron-ethyl
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS506-77-4 Cyanides chlorine cyanide
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS7758-19-2 Nutrients chlorite
75-68-3 VOCs chloro-1,1-difluoroethane;1-126-99-8 VOCs chloro-1,3-butadiene;2-
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4-95-69-2 SVOCs chloro-2-methylaniline;4-79-11-8 SVOCs chloroacetic acid
532-27-4 SVOCs chloroacetophenone;2-106-47-8 SVOCs chloroaniline;p-108-90-7 VOCs chlorobenzene510-15-6 Pesticides chlorobenzilate
74-11-3 Pesticides chlorobenzoic acid;p-98-56-6 VOCs chlorobenzotrifluoride;4-
109-69-3 VOCs chlorobutane;1-59-50-7 Phenols chlorocresol75-45-6 VOCs chlorodifluoromethane67-66-3 VOCs chloroform TTHM NOTES74-87-3 VOCs chloromethane
107-30-2 VOCs chloromethyl methyl ether88-73-3 Pesticides chloronitrobenzene;o-
100-00-5 Pesticides chloronitrobenzene;p-95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT
1897-45-6 Pesticides chlorothalonil95-49-8 VOCs chlorotoluene;o-
101-21-3 Pesticides chlorpropham2921-88-2 Pesticides chlorpyrifos5598-13-0 Pesticides chlorpyrifos-methyl
64902-72-3 Pesticides chlorsulfuron60238-56-4 Pesticides chlorthiophos
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt
E649830 VOCs coke oven emissions7440-50-8 Metals COPPER HARDNESS - DEPENDENT
544-92-3 Cyanides copper cyanide108-39-4 Phenols cresol;m-
95-48-7 Phenols cresol;o-106-44-5 Phenols cresol;p-123-73-9 VOCs crotonaldehyde
98-82-8 VOCs cumene21725-46-2 Pesticides cyanazine
57-12-5 Cyanides CYANIDE CYANIDE NOTES460-19-5 Cyanides cyanogen506-68-3 Cyanides cyanogen bromide110-82-7 VOCs cyclohexane108-94-1 VOCs cyclohexanone108-91-8 VOCs cyclohexylamine
68085-85-8 Pesticides cyhalothrin/karate52315-07-8 Pesticides cypermethrin66215-27-8 Pesticides cyromazine
1861-32-1 Herbicides dacthal75-99-0 Herbicides dalapon, sodium salt
39515-41-8 Pesticides danitol
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
1.90E+01 1.90E+01 1.10E+01 1.10E+01 1.30E+01 1.30E+01 7.50E+00 7.50E+00
3.80E+02 1.00E+02 1.00E+02
3.60E+01 5.00E+02
2.60E+02 1.00E+02 6.00E+01
1.50E+01 3.00E+01
8.30E-02 8.30E-02 4.10E-02 4.10E-02 1.10E-02 1.10E-02 5.60E-03 5.60E-03
5.50E+02 5.70E+02 1.80E+02 7.40E+011.50E+01 1.60E+01 1.00E+01 1.10E+01 1.10E+03 1.10E+03 5.00E+01 5.00E+01
1.40E+00 1.60E-02 1.20E-01
1.70E+01 1.10E+01 1.30E+03 1.30E+03 4.80E+00 4.80E+00 3.10E+00 3.10E+00
2.20E+01 2.20E+01 5.20E+00 5.20E+00 1.90E+01 9.00E+00 4.00E+00 1.00E+00 1.00E+00 1.00E+00 1.00E+00
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 29 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes94-82-6 Pesticides db;2,4-72-54-8 Pesticides ddd72-55-9 Pesticides dde50-29-3 Pesticides ddt
1163-19-5 PBDEs decabromodiphenyl ether8065-48-3 Pesticides demeton
103-23-1 Phthalates di(2-ethylhexyl)adipate2303-16-4 Pesticides diallate
333-41-5 Pesticides diazinon53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran96-12-8 Pesticides dibromo-3-chloropropane;1,2-
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4-124-48-1 VOCs dibromochloromethane TTHM NOTES
84-74-2 Phthalates di-butyl phthalate1918-00-9 Herbicides dicamba3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4-79-43-6 SVOCs dichloroacetic acid95-50-1 VOCs dichlorobenzene;1,2-
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4-
91-94-1 SVOCs dichlorobenzidine;3,3'-75-71-8 VOCs dichlorodifluoromethane75-34-3 VOCs dichloroethane;1,1-
107-06-2 VOCs dichloroethane;1,2-540-59-0 VOCs dichloroethylene,1,2- (mixed isomers)
75-35-4 VOCs dichloroethylene;1,1-156-59-2 VOCs dichloroethylene;1,2-,cis156-60-5 VOCs dichloroethylene;1,2-,trans120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4-78-87-5 VOCs dichloropropane;1,2-
616-23-9 SVOCs dichloropropanol;2,3-542-75-6 VOCs dichloropropene;1,3-
62-73-7 Pesticides dichlorvos77-73-6 VOCs dicyclopentadiene60-57-1 Pesticides dieldrin84-66-2 Phthalates diethyl phthalate
112-34-5 Glycols diethylene glycol monobutyl ether111-90-0 Glycols diethylene glycol monoethyl ether617-84-5 SVOCs diethylformamide
56-53-1 SVOCs diethylstilbesterol43222-48-6 Pesticides difenzoquat35367-38-5 Pesticides diflubenzuron
75-37-6 VOCs difluoroethane;1,1-1445-75-6 VOCs diisopropyl methylphosphonate
55290-64-7 Pesticides dimethipin60-51-5 Pesticides dimethoate
119-90-4 SVOCs dimethoxybenzidine;3,3'-131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4-95-68-1 SVOCs dimethylaniline;2,4-
121-69-7 VOCs dimethylaniline;N,N-119-93-7 SVOCs dimethylbenzidine;3,3'-
68-12-2 VOCs dimethylformamide;N,N-
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
3.60E-05 7.90E-06 1.20E-045.10E-05 8.80E-07 1.80E-05
1.10E+00 1.10E+00 1.00E-03 1.00E-03 2.50E-05 1.20E-06 3.00E-05 1.30E-01 1.30E-01 1.00E-03 1.00E-03
1.00E-01 1.00E-01
1.70E-01 1.70E-01 8.20E-01 8.20E-011.40E-03 1.60E-05 1.20E-04
6.50E-01 6.00E-01 8.00E-014.50E+02 8.00E+00 2.00E+01
2.00E+03 7.00E+02 1.00E+031.30E+01 2.00E+00 7.00E+004.60E+02 2.00E+02 3.00E+023.10E-03 4.90E-02
9.30E+00 8.90E+00 9.90E+00
1.20E+03 7.00E+02 3.00E+02
6.00E+02 2.00E+02 1.00E+022.50E+01 1.00E+01 1.00E+01
1.30E+037.10E-01 9.00E-01
2.40E-01 2.20E-01 2.70E-01
2.50E+00 2.40E-01 1.90E-03 5.60E-02 6.10E-06 7.00E-08 1.20E-06 7.10E-01 7.10E-01 1.90E-03 1.90E-034.20E+03 2.00E+02 6.00E+02
9.20E+04 6.00E+02 2.00E+03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 30 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes57-14-7 VOCs dimethylhydrazine;1,1-
540-73-8 VOCs dimethylhydrazine;1,2-105-67-9 Phenols dimethylphenol;2,4-576-26-1 Phenols dimethylphenol;2,6-
95-65-8 Phenols dimethylphenol;3,4-99-65-0 Explosives dinitrobenzene;m-
528-29-0 SVOCs dinitrobenzene;o-100-25-4 SVOCs dinitrobenzene;p-131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6-
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6-121-14-2 Explosives dinitrotoluene;2,4-606-20-2 Explosives dinitrotoluene;2,6-117-84-0 Phthalates di-n-octyl phthalate
88-85-7 Herbicides dinoseb123-91-1 VOCs dioxane;1,4-957-51-7 Pesticides diphenamid122-39-4 Pesticides diphenylamine122-66-7 SVOCs diphenylhydrazine;1,2-
85-00-7 Pesticides diquat1937-37-7 Dyes direct black 382602-46-2 Dyes direct blue 6
16071-86-6 Dyes direct brown 95298-04-4 Pesticides disulfoton505-29-3 SVOCs dithiane;1,4-330-54-1 Pesticides (Carbamate) diuron534-52-1 Phenols DNOC
2439-10-3 Pesticides dodine115-29-7 Pesticides endosulfan
1031-07-8 Pesticides endosulfan sulfate959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall
72-20-8 Pesticides endrin7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin106-88-7 VOCs epoxybutane
16672-87-0 Pesticides ethephon563-12-2 Pesticides ethion111-15-9 VOCs ethoxyethanol acetate;2-110-80-5 VOCs ethoxyethanol;2-141-78-6 VOCs ethyl acetate140-88-5 VOCs ethyl acrylate
75-00-3 VOCs ethyl chloride759-94-4 Pesticides ethyl dipropylthiocarbamate;S-
60-29-7 VOCs ethyl ether97-63-2 VOCs ethyl methacrylate
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate100-41-4 VOCs ethylbenzene109-78-4 SVOCs ethylene cyanohydrin107-15-3 VOCs ethylene diamine106-93-4 VOCs ethylene dibromide (EDB)107-21-1 VOCs ethylene glycol111-76-2 Glycols ethylene glycol monobutyl ether (EGBE)
75-21-8 VOCs ethylene oxide96-45-7 SVOCs ethylene thiourea84-72-0 Phthalates ethylphthalyl ethylglycolate
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
8.50E+01 1.00E+02
6.00E+01 3.00E+01 1.00E+011.00E+01
3.90E-02 4.90E-02
1.50E-02 1.00E-02 3.00E-02
7.10E+00 3.00E+00 2.00E+00
2.20E-01 5.60E-02 3.40E-02 8.70E-039.70E+00 9.00E+00 2.00E+01
2.20E-01 5.60E-02 9.70E+00 6.00E+00 2.00E+01 3.40E-02 8.70E-032.20E-01 5.60E-02 9.70E+00 2.00E+01 3.40E-02 8.70E-03
1.80E-01 8.60E-02 2.30E-03 3.60E-02 3.40E-02 2.00E-03 3.00E-02 3.70E-02 3.70E-02 2.30E-03 2.30E-033.40E-02 1.00E+00
2.00E+02 2.90E+01 6.80E+01
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 31 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes101200-48-0 Pesticides express
22224-92-6 Pesticides fenamiphos2164-17-2 Pesticides fluometuron
206-44-0 PAHs fluoranthene86-73-7 PAHs fluorene
16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES59756-60-4 Pesticides fluridone56425-91-3 Pesticides flurprimidol66332-96-5 Pesticides flutolanil69409-94-5 Pesticides fluvalinate
133-07-3 Pesticides folpet72178-02-0 Pesticides fomesafen
944-22-9 Pesticides fonofos50-00-0 VOCs formaldehyde64-18-6 VOCs formic acid
39148-24-8 Pesticides fosetyl-al110-00-9 Furans furan
67-45-8 SVOCs furazolidone98-01-1 VOCs furfural
531-82-8 SVOCs furium60568-05-0 Pesticides furmecyclox77182-82-2 Pesticides glufosinate-ammonium
765-34-4 VOCs glycidaldehyde1071-83-6 SVOCs glyphosate
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion69806-40-2 Pesticides haloxyfop-methyl79277-27-3 Pesticides harmony
76-44-8 Pesticides heptachlor1024-57-3 Pesticides heptachlor epoxide
142-82-5 VOCs heptane;n-87-82-1 SVOCs hexabromobenzene
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'-118-74-1 Pesticides hexachlorobenzene
87-68-3 VOCs hexachlorobutadiene319-84-6 Pesticides hexachlorocyclohexane;alpha319-85-7 Pesticides hexachlorocyclohexane;beta-608-73-1 SVOCs hexachlorocyclohexane;technical
77-47-4 Pesticides hexachlorocyclopentadiene34465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture
67-72-1 VOCs hexachloroethane70-30-4 SVOCs hexachlorophene
822-06-0 VOCs hexamethylene diisocyanate;1,6-110-54-3 VOCs hexane;n-591-78-6 VOCs hexanone;2-
51235-04-2 Pesticides hexazinone302-01-2 VOCs hydrazine
10034-93-2 SVOCs hydrazine sulfate7647-01-0 VOCs hydrogen chloride
74-90-8 Cyanides hydrogen cyanide7783-06-4 VOCs hydrogen sulfide
123-31-9 SVOCs hydroquinone35554-44-0 Pesticides imazalil81335-37-7 Pesticides imazaquin
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione
7439-89-6 Metals iron
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
1.60E+01 6.00E+00 2.00E+014.20E+02 1.00E+01 5.00E+01
1.00E-02 1.00E-02
5.20E-01 5.20E-01 3.80E-03 3.80E-03 9.90E-06 3.40E-07 5.90E-06 5.30E-02 5.30E-02 3.60E-03 3.60E-035.20E-01 3.80E-03 7.40E-06 2.40E-06 3.20E-05 5.30E-02 3.60E-03
5.10E-05 5.00E-06 7.90E-056.90E-01 1.00E-02 1.00E-025.00E-04 4.80E-05 3.60E-041.80E-03 1.30E-03 8.00E-03
6.60E-031.50E+02 1.00E+00 4.00E+00
1.10E-01 2.00E-02 1.00E-01
2.00E+00 2.00E+00
1.40E-02 1.60E-04 1.20E-03
1.00E+03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 32 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes78-83-1 VOCs isobutyl alcohol78-59-1 SVOCs isophorone
33820-53-0 Pesticides isopropalin1832-54-8 SVOCs isopropyl methyl phosphonic acid
82558-50-7 Pesticides isoxaben77501-63-4 Pesticides lactofen
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane
330-55-2 Pesticides (Carbamate) linuron7791-03-9 Perchlorates lithium perchlorate
83055-99-6 Pesticides londax121-75-5 Pesticides malathion108-31-6 SVOCs maleic anhydride123-33-1 SVOCs maleic hydrazide109-77-3 VOCs malononitrile
8018-01-7 Pesticides mancozeb12427-38-2 Pesticides maneb
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES
950-10-7 Pesticides mephosfolan24307-26-4 Pesticides mepiquat chloride
7487-94-7 Metal compounds mercuric chloride7439-97-6 Metals mercury
150-50-5 Pesticides merphos57837-19-1 Pesticides metalaxyl
126-98-7 VOCs methacrylonitrile10265-92-6 Pesticides methamidosphos
67-56-1 VOCs methanol950-37-8 Pesticides methidathion
16752-77-5 Pesticides (Carbamate) methomyl99-59-2 SVOCs methoxy-5-nitroaniline;2-72-43-5 Pesticides methoxychlor
110-49-6 VOCs methoxyethanol acetate;2-109-86-4 VOCs methoxyethanol;2-
79-20-9 VOCs methyl acetate96-33-3 VOCs methyl acrylate78-93-3 VOCs methyl ethyl ketone
108-10-1 VOCs methyl isobutyl ketone22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES
80-62-6 VOCs methyl methacrylate90-12-0 PAHs methyl naphthalene;1-91-57-6 PAHs methyl naphthalene;2-
298-00-0 Pesticides methyl parathion25013-15-4 VOCs methyl styrene
98-83-9 VOCs methyl styrene, alpha1634-04-4 VOCs methyl tert-butyl ether
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2-99-55-8 SVOCs methyl-5-nitroaniline;2-
636-21-5 SVOCs methylaniline hydrochloride;2-95-53-4 VOCs methylaniline;2-
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'-101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'-
74-95-3 VOCs methylene bromide75-09-2 VOCs methylene chloride
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI)9016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI)
101-77-9 SVOCs methylenebisbenzenamine;4,4-60-34-4 VOCs methylhydrazine
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
2.70E+01 3.40E+01
6.50E+01 6.50E+01 2.50E+00 2.50E+00 2.10E+02 2.10E+02 8.10E+00 8.10E+002.00E+00 9.50E-01 8.00E-02 1.50E+01 4.30E-01 4.20E+00 1.60E-01 1.60E-01
1.00E-01 1.00E-01
5.00E+015.00E+01
2.10E+00 1.40E+00 1.20E-02 7.70E-01 1.80E+00 1.80E+00 2.50E-02 9.40E-01
3.00E-02 2.00E-02 3.00E-02
1.60E+01 1.00E+01 2.00E+01
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 33 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes51218-45-2 Pesticides metolachlor21087-64-9 Pesticides metribuzin
2385-85-5 Pesticides mirex2212-67-1 Pesticides molinate7439-98-7 Metals molybdenum
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS300-76-5 Pesticides naled
91-20-3 PAHs naphthalene15299-99-7 Pesticides napropamide
104-51-8 VOCs n-butylbenzeneE715532 Metals nickel refinery dust
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT12035-72-2 Metal compounds nickel subsulfide14797-55-8 Nutrients nitrate14797-65-0 Nutrients nitrite
88-74-4 SVOCs nitroaniline, 2-100-01-6 SVOCs nitroaniline, 4-
98-95-3 Explosives nitrobenzene67-20-9 SVOCs nitrofurantoin59-87-0 SVOCs nitrofurazone
556-88-7 SVOCs nitroguanidine79-46-9 VOCs nitropropane;2-
1116-54-7 SVOCs nitrosodiethanolamine;N-55-18-5 SVOCs nitrosodiethylamine;N-62-75-9 SVOCs nitrosodimethylamine;N-
924-16-3 VOCs nitroso-di-n-butylamine;N-621-64-7 SVOCs nitroso-di-n-propylamine;N-
86-30-6 SVOCs nitrosodiphenylamine;N-759-73-9 SVOCs nitroso-n-ethylurea;n-
10595-95-6 SVOCs nitroso-N-methylethylamine;N-684-93-5 SVOCs nitroso-n-methylurea,n-930-55-2 SVOCs nitrosopyrrolidine;N-
99-08-1 Explosives nitrotoluene, m-88-72-2 Explosives nitrotoluene, o-99-99-0 Explosives nitrotoluene, p-
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon85509-19-9 Pesticides nustar32536-52-0 PBDEs octabromodiphenyl ether
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine152-16-9 SVOCs octamethylpyrophosphoramide
19044-88-3 Pesticides oryzalin19666-30-9 Pesticides oxadiazon23135-22-0 Pesticides (Carbamate) oxamyl42874-03-3 Pesticides oxyfluorfen76738-62-0 Herbicides paclobutrazol
1910-42-5 Pesticides Paraquat Dichloride56-38-2 Pesticides parathion
1114-71-2 Pesticides pebulate40487-42-1 Pesticides pendimethalin
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5-60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5-32534-81-9 PBDEs pentabromodiphenyl ethers
608-93-5 SVOCs pentachlorobenzene82-68-8 Pesticides pentachloronitrobenzene87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT
14797-73-0 Perchlorates perchlorate and perchlorate salts52645-53-1 Pesticides permethrin
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
1.00E-03 1.00E-03
1.40E+03 4.70E+02 1.60E+02 5.20E+01 1.50E+02 8.00E+01 6.10E+02 7.40E+01 7.40E+01 8.20E+00 8.20E+00
1.00E+04
5.50E+01 3.00E+01 1.00E+01
8.00E-046.50E-04 6.90E-04
6.30E-034.40E-03 5.00E-036.20E-01 3.30E+00
1.60E-02
2.80E+01 6.60E+00 7.00E+00 1.70E+00
6.50E-02 6.50E-02 1.30E-02 1.30E-02
1.00E-01
2.00E+01 1.90E+01 1.30E+01 1.50E+01 4.60E-02 2.00E-03 3.00E-02 1.30E+01 1.30E+01 7.90E+00 7.90E+00
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notesunavailable19 General Chemistry pH pH NOTES
13684-63-4 Pesticides phenmedipham108-95-2 Phenols phenol106-50-3 SVOCs phenylenediamine, p-108-45-2 SVOCs phenylenediamine;m-
95-54-5 SVOCs phenylenediamine;o-62-38-4 Metals (organometallic) phenylmercuric acetate90-43-7 Phenols phenylphenol;2-
298-02-2 Pesticides phorate75-44-5 VOCs phosgene
732-11-6 Pesticides phosmet7803-51-2 Gases phosphine7664-38-2 SVOCs phosphoric acid7723-14-0 Nonmetal inorganics phosphorus
100-21-0 Phthalates phthalic acid;p-85-44-9 Phthalates phthalic anhydride
1918-02-1 Herbicides picloram29232-93-7 Pesticides pirimiphos-methyl36355-01-8 PBBs polybrominated biphenyls
1336-36-3 PCBs polychlorinated biphenyls (PCBs)151-50-8 Cyanides potassium cyanide
7778-74-7 Perchlorates potassium perchlorate506-61-6 Cyanides potassium silver cyanide
67747-09-5 Pesticides prochloraz (not in HSDB)26399-36-0 Pesticides profluralin
1610-18-0 Pesticides prometon7287-19-6 Pesticides prometryn
23950-58-5 Pesticides pronamide1918-16-7 Pesticides propachlor
709-98-8 Pesticides propanil2312-35-8 Pesticides propargite
107-19-7 VOCs propargyl alcohol139-40-2 Pesticides propazine122-42-9 Pesticides propham
60207-90-1 Pesticides propiconazole123-38-6 VOCs propionaldehyde
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2-103-65-1 VOCs propylbenzene;n-
57-55-6 Glycols propylene glycol6423-43-4 Glycols propylene glycol dinitrate;1,2-
52125-53-8 Glycols propylene glycol monoethyl ether107-98-2 Glycols propylene glycol monomethyl ether
75-56-9 VOCs propylene oxide81335-77-5 Pesticides pursuit51630-58-1 Pesticides pydrin
129-00-0 PAHs pyrene110-86-1 VOCs pyridine
13593-03-8 Pesticides quinalphos91-22-5 SVOCs quinoline
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdxE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE
10453-86-8 Pesticides resmethrin299-84-3 Pesticides ronnel
83-79-4 Pesticides rotenone78-48-8 Pesticides s,s;s-tributylphosphorotrithioate
78587-05-0 Pesticides savey
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
6.5 – 9 5 – 9 6.5 – 8.5
1.80E+04 9.00E+03 4.00E+03
2.00E+00 1.40E-02 1.40E-02 1.70E-04 7.00E-06 6.40E-05 1.00E+01 3.00E-02 3.00E-02
3.10E+02 8.00E+00 2.00E+01
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 35 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes135-98-8 VOCs sec-butylbenzene
7783-00-8 Metal compounds selenious acid7782-49-2 Metals selenium and compounds
74051-80-2 Pesticides sethoxydim7440-22-4 Metals SILVER HARDNESS - DEPENDENT
506-64-9 Cyanides silver cyanide122-34-9 Pesticides simazine
26628-22-8 Metal compounds sodium azide143-33-9 Cyanides sodium cyanide148-18-5 Metals (organometallic) sodium diethyldithiocarbamate
62-74-8 Metals (organometallic) sodium fluoroacetate13718-26-8 Metal compounds sodium metavanadate
7601-89-0 Perchlorates sodium perchlorate7440-24-6 Metals strontium
57-24-9 SVOCs strychnine100-42-5 VOCs styrene
88671-89-0 Pesticides systhane1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES
34014-18-1 Pesticides tebuthiuron3383-96-8 Pesticides temephos5902-51-2 Pesticides terbacil
13071-79-9 SVOCs terbufos886-50-0 Pesticides terbutryn
98-06-6 VOCs tert-butylbenzene5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4'
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5-630-20-6 VOCs tetrachloroethane;1,1,1,2-
79-34-5 VOCs tetrachloroethane;1,1,2,2-127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,-
961-11-5 Pesticides tetrachlorvinphos3689-24-5 Pesticides tetraethyl dithiopyrophosphate
78-00-2 Metals (organometallic) tetraethyl lead811-97-2 VOCs tetrafluoroethane;1,1,1,2-109-99-9 Furans tetrahydrofuran
1314-32-5 Metal compounds thallic oxide563-68-8 Metal compounds thallium acetate
6533-73-9 Metal compounds thallium carbonate7791-12-0 Metal compounds thallium chloride
10102-45-1 Metal compounds thallium nitrate12039-52-0 Metal compounds thallium selenite
7446-18-6 Metal compounds thallium(I) sulfate7440-28-0 Metals thallium, soluble salts
28249-77-6 Pesticides thiobencarb21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2-39196-18-4 Pesticides thiofanox23564-05-8 Pesticides thiophanate-methyl
137-26-8 Pesticides thiram7440-31-5 Metals tin
118-96-7 Explosives tnt108-88-3 VOCs toluene
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6-584-84-9 VOCs toluene-2,4-diisocyanate
91-08-7 VOCs toluene-2,6-diisocyanate95-70-5 SVOCs toluenediamine;2,5-
106-49-0 SVOCs toluidine;p-8001-35-2 Pesticides toxaphene
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
2.00E+01 5.00E+00 1.20E+02 6.00E+01 1.70E+02 2.90E+02 2.90E+02 7.10E+01 7.10E+01
3.40E+00 3.20E+00 1.90E+00 1.90E+00
6.40E-08 1.30E-08 5.00E-09
3.00E-02
1.20E-01 1.00E-01 2.00E-014.90E+00 2.40E+00 1.00E+01
2.40E-01 1.70E+00 2.40E-01
1.80E+02 7.20E+01 5.70E+01
7.30E-01 7.30E-01 2.00E-04 2.00E-04 3.20E-05 7.00E-04 2.10E-01 2.10E-01 2.00E-04 2.00E-04
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 36 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes93-72-1 Herbicides tp;2,4,5-
unavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin2303-17-5 Pesticides triallate
82097-50-5 Pesticides triasulfuron615-54-3 VOCs tribromobenzene;1,2,4-688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2-76-03-9 SVOCs trichloroacetic acid
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6-634-93-5 SVOCs trichloroaniline;2,4,6-120-82-1 VOCs trichlorobenzene;1,2,4-
71-55-6 VOCs trichloroethane;1,1,1-79-00-5 VOCs trichloroethane;1,1,2-79-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES75-69-4 VOCs trichlorofluoromethane95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5-
598-77-6 VOCs trichloropropane;1,1,2-96-18-4 VOCs trichloropropane;1,2,3-96-19-5 VOCs trichloropropene;1,2,3-
58138-08-2 Pesticides tridiphane121-44-8 VOCs triethylamine
1582-09-8 Pesticides trifluralinunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate526-73-8 VOCs trimethylbenzene;1,2,3-
95-63-6 VOCs trimethylbenzene;1,2,4-108-67-8 VOCs trimethylbenzene;1,3,5-
99-35-4 Explosives trinitrobenzene;1,3,5-479-45-8 Explosives trinitrophenylmethylnitramine
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS7440-62-2 Metals vanadium1314-62-1 Metal compounds vanadium pentoxide1929-77-7 Pesticides vernam
50471-44-8 Pesticides vinclozolin108-05-4 VOCs vinyl acetate
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES81-81-2 Pesticides warfarin
8012-95-1 Petroleum white mineral oil108-38-3 VOCs xylene;m-
95-47-6 VOCs xylene;o-106-42-3 VOCs xylene;p-
1330-20-7 VOCs xylenes7440-66-6 Metals ZINC HARDNESS - DEPENDENT
557-21-1 Cyanides zinc cyanide1314-84-7 Metal compounds zinc phosphide
12122-67-7 Pesticides zineb
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
1.00E+02
4.60E-01 7.20E-02 4.20E-01 7.40E-03
1.20E-01 3.60E-02 7.10E-024.70E+04 2.00E+04 1.00E+044.40E-01 3.50E-01 5.50E-013.80E-01 3.00E-01 6.00E-01
3.00E+022.50E-01 1.50E+00
2.00E-02 2.20E-02
1.10E+02 1.20E+02 1.00E+02 1.20E+02 2.30E+03 1.00E+03 7.40E+03 9.00E+01 9.00E+01 8.10E+01 8.10E+01
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes83-32-9 PAHs acenaphthene
30560-19-1 Pesticides acephate75-07-0 VOCs acetaldehyde
34256-82-1 Pesticides acetochlor67-64-1 VOCs acetone75-86-5 VOCs acetone cyanohydrin75-05-8 VOCs acetonitrile98-86-2 SVOCs acetophenone
62476-59-9 Herbicides acifluorfen, sodium107-02-8 VOCs acrolein
79-06-1 VOCs acrylamide79-10-7 VOCs acrylic acid
107-13-1 VOCs acrylonitrile15972-60-8 Pesticides alachlor
1596-84-5 Pesticides alar116-06-3 Pesticides (Carbamate) aldicarb
1646-88-4 Pesticides (Carbamate) aldicarb sulfone309-00-2 Pesticides aldrin
74223-64-6 Pesticides ally107-18-6 VOCs allyl alcohol107-05-1 VOCs allyl chloride
7429-90-5 Metals aluminum20859-73-8 Metal compounds aluminum phosphide67485-29-4 Pesticides amdro
834-12-8 Pesticides ametryn591-27-5 Phenols aminophenol;m-
33089-61-1 Pesticides amitraz7664-41-7 Nutrients AMMONIA AMMONIA NOTES7790-98-9 Perchlorates ammonium perchlorate7773-06-0 Pesticides ammonium sulfamate
62-53-3 SVOCs aniline120-12-7 PAHs anthracene
7440-36-0 Metals antimony1314-60-9 Metal compounds antimony pentoxide
28300-74-5 Metal compounds antimony potassium tartrate1332-81-6 Metal compounds antimony tetroxide1309-64-4 Metal compounds antimony trioxide
74115-24-5 Pesticides apollo140-57-8 SVOCs aramite
12674-11-2 PCBs aroclor 101611097-69-1 PCBs aroclor 125411096-82-5 PCBs aroclor 1260
7440-38-2 Metals arsenic, inorganic7784-42-1 Gases arsine1332-21-4 Fibers ASBESTOS ASBESTOS NOTE
76578-14-8 Pesticides assure3337-71-1 Pesticides asulam1912-24-9 Pesticides atrazine
65195-55-3 Pesticides avermectin B1103-33-3 Pesticides azobenzene
7440-39-3 Metals barium and compounds114-26-1 Pesticides baygon
43121-43-3 Pesticides bayleton68359-37-5 Pesticides baythroid
1861-40-1 Pesticides benefin17804-35-2 Pesticides benomyl25057-89-0 Herbicides bentazon
100-52-7 SVOCs benzaldehyde
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
1.10E+02 3.00E+01 9.00E+01
4.10E+00 1.10E+00 9.00E+00 1.10E+01
1.40E+04 3.10E+049.10E-01 2.00E+002.70E+01 6.00E+01
1.10E+00 4.00E+02 9.10E-03 2.00E-022.70E+00 6.60E-03 6.00E+00 2.50E-014.60E-01 1.00E+00
2.80E-02 7.00E+00 9.10E-01 3.70E-02 2.00E+00 3.70E-01
4.90E-01 4.90E+00
5.80E-06 4.10E-08 7.70E-07 5.10E-04 5.10E-03
4.60E-02 1.00E-014.60E-01 4.20E-01 1.00E+00 4.20E+002.30E+00 5.00E+00
2.30E+02 5.00E+02
4.60E-01 1.60E+00 1.00E+00 1.60E+014.60E+03 1.00E+02 4.00E+021.80E+02 9.00E+01 6.40E+02 1.40E-01 3.00E-01
9.10E-02 2.00E-01
3.50E-01 3.50E+001.30E-01 1.30E+004.40E-03 4.40E-024.40E-03 4.40E-02
1.00E+01 1.40E-01 1.40E-01 6.90E-03 5.80E-04 1.50E-02 5.80E-032.30E-02 5.00E-02
8.10E-02 8.10E-012.30E-01 5.00E-01
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes71-43-2 VOCs BENZENE
108-98-5 SVOCs benzenethiol92-87-5 SVOCs benzidine56-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT98-07-7 VOCs benzotrichloride
100-51-6 SVOCs benzyl alcohol100-44-7 VOCs benzyl chloride
7440-41-7 Metals beryllium91-58-7 PAHs beta-chloronaphthalene
141-66-2 Pesticides bidrin82657-04-3 Pesticides biphenthrin
92-52-4 PAHs biphenyl;1,1-108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether111-44-4 SVOCs bis(2-chloroethyl)ether117-81-7 Phthalates bis(2-ethylhexyl) phthalate542-88-1 VOCs bis(chloromethyl)ether
80-05-7 Phenols bisphenol a7440-42-8 Metals boron
15541-45-4 Pesticides bromate79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene75-27-4 VOCs bromodichloromethane TTHM NOTES
593-60-2 VOCs bromoethene75-25-2 VOCs bromoform TTHM NOTES74-83-9 VOCs bromomethane
2104-96-3 Pesticides bromophos1689-84-5 Pesticides bromoxynil1689-99-2 Pesticides bromoxynil octanoate
106-99-0 VOCs butadiene;1,3-71-36-3 VOCs butanol;n-85-68-7 Phthalates butyl benzyl phthalate
2008-41-5 Pesticides butylate85-70-1 Phthalates butylphthalyl butylglycolate94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)-75-60-5 Pesticides cacodylic acid
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES
592-01-8 Cyanides calcium cyanide105-60-2 SVOCs caprolactam
2425-06-1 Pesticides captafol133-06-2 Pesticides captan
63-25-2 Pesticides (Carbamate) carbaryl1563-66-2 Pesticides (Carbamate) carbofuran
75-15-0 VOCs carbon disulfide56-23-5 VOCs carbon tetrachloride
55285-14-8 Pesticides carbosulfan5234-68-4 Pesticides carboxin1306-38-3 Metals cerium oxide and cerium compounds
302-17-0 VOCs chloral hydrate133-90-4 Herbicides chloramben118-75-2 Pesticides chloranil
12789-03-6 Pesticides chlordane143-50-0 Pesticides chlordecone (kepone)
16887-00-6 Nutrients chloride
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
1.60E+00 1.60E+01 1.40E+01 3.20E-01 3.00E+01 3.20E+00
2.30E-05 1.10E-02 3.70E-05 3.70E-042.10E-02 1.60E-04 1.30E-032.10E-03 1.60E-05 1.30E-04 9.10E-04 1.10E-03 2.00E-03 4.20E-022.10E-02 1.60E-04 1.30E-032.10E-01 1.60E-03 1.30E-02
4.60E-01 5.10E-02 1.00E+00 5.10E-019.10E-03 1.00E-03 2.00E-02 1.00E-02
1.80E+02 1.00E+02 1.00E+03
1.80E-01 4.00E-019.00E+02 4.00E+03 2.50E-01 2.50E+00
6.00E-02 2.20E+00 7.60E-03 7.60E-022.50E-01 4.60E-02 3.70E-01 1.00E+00 1.00E+01
1.70E-02 4.00E-05 4.00E-04
9.10E+00 2.00E+01
2.70E+01 6.00E+013.60E+00 2.80E+00 2.70E+01 6.80E-02 6.80E-01
1.40E+00 7.80E-02 3.00E+00 7.80E-012.70E+01 1.20E+01 1.20E+02 2.30E+00 2.30E+012.40E+03 1.00E+04 2.30E+00 5.00E+00
9.10E-01 8.30E-02 2.00E+00 8.30E-01
5.80E-01 1.30E-02 1.00E-01
4.60E-03 1.40E-03 1.00E-02 1.40E-024.60E-03 1.40E-03 1.00E-02 1.40E-02
1.00E+00 2.20E+005.80E-02 5.80E-013.80E+00 3.80E+01
3.20E+02 7.00E+023.50E-01 5.00E+00 4.60E+01 4.20E-01 1.00E+02 4.20E+00
4.10E-01 9.00E-01
9.30E-05 2.20E-05 3.20E-04 3.20E-01 2.50E-02 7.00E-01 2.50E-015.40E-04 5.40E-03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 39 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes90982-32-4 Pesticides chlorimuron-ethyl
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS506-77-4 Cyanides chlorine cyanide
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS7758-19-2 Nutrients chlorite
75-68-3 VOCs chloro-1,1-difluoroethane;1-126-99-8 VOCs chloro-1,3-butadiene;2-
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4-95-69-2 SVOCs chloro-2-methylaniline;4-79-11-8 SVOCs chloroacetic acid
532-27-4 SVOCs chloroacetophenone;2-106-47-8 SVOCs chloroaniline;p-108-90-7 VOCs chlorobenzene510-15-6 Pesticides chlorobenzilate
74-11-3 Pesticides chlorobenzoic acid;p-98-56-6 VOCs chlorobenzotrifluoride;4-
109-69-3 VOCs chlorobutane;1-59-50-7 Phenols chlorocresol75-45-6 VOCs chlorodifluoromethane67-66-3 VOCs chloroform TTHM NOTES74-87-3 VOCs chloromethane
107-30-2 VOCs chloromethyl methyl ether88-73-3 Pesticides chloronitrobenzene;o-
100-00-5 Pesticides chloronitrobenzene;p-95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT
1897-45-6 Pesticides chlorothalonil95-49-8 VOCs chlorotoluene;o-
101-21-3 Pesticides chlorpropham2921-88-2 Pesticides chlorpyrifos5598-13-0 Pesticides chlorpyrifos-methyl
64902-72-3 Pesticides chlorsulfuron60238-56-4 Pesticides chlorthiophos
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt
E649830 VOCs coke oven emissions7440-50-8 Metals COPPER HARDNESS - DEPENDENT
544-92-3 Cyanides copper cyanide108-39-4 Phenols cresol;m-
95-48-7 Phenols cresol;o-106-44-5 Phenols cresol;p-123-73-9 VOCs crotonaldehyde
98-82-8 VOCs cumene21725-46-2 Pesticides cyanazine
57-12-5 Cyanides CYANIDE CYANIDE NOTES460-19-5 Cyanides cyanogen506-68-3 Cyanides cyanogen bromide110-82-7 VOCs cyclohexane108-94-1 VOCs cyclohexanone108-91-8 VOCs cyclohexylamine
68085-85-8 Pesticides cyhalothrin/karate52315-07-8 Pesticides cypermethrin66215-27-8 Pesticides cyromazine
1861-32-1 Herbicides dacthal75-99-0 Herbicides dalapon, sodium salt
39515-41-8 Pesticides danitol
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
6.90E-02 1.50E-01
9.10E-02 2.00E-01
2.30E+04 5.00E+049.10E+00 8.30E-03 2.00E+01 8.30E-02
3.20E-02 3.20E-01
1.40E-02 3.00E-02
8.90E+02 2.00E+02 8.00E+02 2.30E+01 5.00E+018.10E-02 8.10E-01
1.40E+02 3.00E+02
3.60E+01 2.00E+032.30E+04 5.00E+04
1.20E+03 6.00E+02 2.00E+03 4.50E+01 1.10E-01 9.80E+01 1.10E+004.10E+01 9.00E+01
3.60E-03 3.60E-024.60E-03 1.00E-029.10E-01 2.00E+00
1.70E+01 8.00E+02
4.60E-02 3.00E-05 1.00E-01 3.00E-042.10E+00 1.60E-02 1.30E-01
2.70E-03 2.80E-04 6.00E-03 2.80E-034.00E-03 4.00E-02
2.70E+02 6.00E+022.70E+02 6.00E+022.70E+02 6.00E+02
1.80E+02 4.00E+02
2.70E+02 1.00E+02 4.00E+02 3.70E-01 8.00E-01
2.70E+03 6.00E+033.20E+02 7.00E+02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 40 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes94-82-6 Pesticides db;2,4-72-54-8 Pesticides ddd72-55-9 Pesticides dde50-29-3 Pesticides ddt
1163-19-5 PBDEs decabromodiphenyl ether8065-48-3 Pesticides demeton
103-23-1 Phthalates di(2-ethylhexyl)adipate2303-16-4 Pesticides diallate
333-41-5 Pesticides diazinon53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran96-12-8 Pesticides dibromo-3-chloropropane;1,2-
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4-124-48-1 VOCs dibromochloromethane TTHM NOTES
84-74-2 Phthalates di-butyl phthalate1918-00-9 Herbicides dicamba3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4-79-43-6 SVOCs dichloroacetic acid95-50-1 VOCs dichlorobenzene;1,2-
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4-
91-94-1 SVOCs dichlorobenzidine;3,3'-75-71-8 VOCs dichlorodifluoromethane75-34-3 VOCs dichloroethane;1,1-
107-06-2 VOCs dichloroethane;1,2-540-59-0 VOCs dichloroethylene,1,2- (mixed isomers)
75-35-4 VOCs dichloroethylene;1,1-156-59-2 VOCs dichloroethylene;1,2-,cis156-60-5 VOCs dichloroethylene;1,2-,trans120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4-78-87-5 VOCs dichloropropane;1,2-
616-23-9 SVOCs dichloropropanol;2,3-542-75-6 VOCs dichloropropene;1,3-
62-73-7 Pesticides dichlorvos77-73-6 VOCs dicyclopentadiene60-57-1 Pesticides dieldrin84-66-2 Phthalates diethyl phthalate
112-34-5 Glycols diethylene glycol monobutyl ether111-90-0 Glycols diethylene glycol monoethyl ether617-84-5 SVOCs diethylformamide
56-53-1 SVOCs diethylstilbesterol43222-48-6 Pesticides difenzoquat35367-38-5 Pesticides diflubenzuron
75-37-6 VOCs difluoroethane;1,1-1445-75-6 VOCs diisopropyl methylphosphonate
55290-64-7 Pesticides dimethipin60-51-5 Pesticides dimethoate
119-90-4 SVOCs dimethoxybenzidine;3,3'-131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4-95-68-1 SVOCs dimethylaniline;2,4-
121-69-7 VOCs dimethylaniline;N,N-119-93-7 SVOCs dimethylbenzidine;3,3'-
68-12-2 VOCs dimethylformamide;N,N-
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
3.60E-05 7.90E-06 1.20E-04 3.60E-02 3.60E-015.10E-05 8.80E-07 1.80E-05 2.60E-02 2.60E-012.50E-05 1.20E-06 3.00E-05 2.60E-02 2.60E-01
2.10E-03 1.60E-05 1.30E-04
9.10E-02 4.20E-04 2.00E-01 4.20E-03
3.00E+00 2.20E+00 2.10E+015.10E+02 8.00E+00 3.00E+01
6.00E-04 6.00E-03
2.50E+03 8.00E+02 3.00E+03 9.10E+01 2.00E+021.60E+01 2.00E+00 1.00E+015.80E+02 2.00E+02 9.00E+02 3.70E+02 2.30E-01 8.00E+02 2.30E+003.30E-03 1.50E-01 7.40E-03 7.40E-02
4.60E+01 1.00E+021.60E+00 1.60E+01
1.20E+02 7.30E+01 6.50E+02 3.20E+00 9.60E-02 7.00E+00 9.60E-01
4.10E+03 4.00E+03 2.00E+04 9.10E+01 2.00E+02
5.80E+03 1.00E+03 4.00E+033.40E+01 1.00E+01 6.00E+01
1.20E+043.10E+00 3.10E+01 1.80E+00 6.80E-01 4.00E+00 6.80E+00
2.00E+00 1.20E+00 1.20E+01 9.10E+00 6.30E-01 2.00E+01 6.30E+002.30E-01 3.00E-02 5.00E-01 3.00E-011.40E-01 3.00E-01
6.10E-06 7.00E-08 1.20E-06 5.40E-04 5.40E-035.00E+03 2.00E+02 6.00E+02
4.60E-02 1.00E-011.40E-01 3.00E-01
2.50E-05 2.50E-04
1.80E+04 4.00E+04
1.30E+05 6.00E+02 2.00E+03
1.40E+01 3.00E+01
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 41 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes57-14-7 VOCs dimethylhydrazine;1,1-
540-73-8 VOCs dimethylhydrazine;1,2-105-67-9 Phenols dimethylphenol;2,4-576-26-1 Phenols dimethylphenol;2,6-
95-65-8 Phenols dimethylphenol;3,4-99-65-0 Explosives dinitrobenzene;m-
528-29-0 SVOCs dinitrobenzene;o-100-25-4 SVOCs dinitrobenzene;p-131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6-
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6-121-14-2 Explosives dinitrotoluene;2,4-606-20-2 Explosives dinitrotoluene;2,6-117-84-0 Phthalates di-n-octyl phthalate
88-85-7 Herbicides dinoseb123-91-1 VOCs dioxane;1,4-957-51-7 Pesticides diphenamid122-39-4 Pesticides diphenylamine122-66-7 SVOCs diphenylhydrazine;1,2-
85-00-7 Pesticides diquat1937-37-7 Dyes direct black 382602-46-2 Dyes direct blue 6
16071-86-6 Dyes direct brown 95298-04-4 Pesticides disulfoton505-29-3 SVOCs dithiane;1,4-330-54-1 Pesticides (Carbamate) diuron534-52-1 Phenols DNOC
2439-10-3 Pesticides dodine115-29-7 Pesticides endosulfan
1031-07-8 Pesticides endosulfan sulfate959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall
72-20-8 Pesticides endrin7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin106-88-7 VOCs epoxybutane
16672-87-0 Pesticides ethephon563-12-2 Pesticides ethion111-15-9 VOCs ethoxyethanol acetate;2-110-80-5 VOCs ethoxyethanol;2-141-78-6 VOCs ethyl acetate140-88-5 VOCs ethyl acrylate
75-00-3 VOCs ethyl chloride759-94-4 Pesticides ethyl dipropylthiocarbamate;S-
60-29-7 VOCs ethyl ether97-63-2 VOCs ethyl methacrylate
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate100-41-4 VOCs ethylbenzene109-78-4 SVOCs ethylene cyanohydrin107-15-3 VOCs ethylene diamine106-93-4 VOCs ethylene dibromide (EDB)107-21-1 VOCs ethylene glycol111-76-2 Glycols ethylene glycol monobutyl ether (EGBE)
75-21-8 VOCs ethylene oxide96-45-7 SVOCs ethylene thiourea84-72-0 Phthalates ethylphthalyl ethylglycolate
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
9.10E-04 2.00E-031.60E-05 1.60E-04
9.70E+01 3.00E+03
6.10E+02 1.00E+02 3.00E+021.00E+03
1.80E-01 1.70E+00 2.80E-02 2.80E-01
1.40E+01 5.00E-01 3.00E+01 5.00E+00
2.30E-02 2.00E-02 2.00E-01 1.10E-02 1.10E-01
1.20E-03 1.20E-021.20E-03 1.20E-021.30E-03 1.30E-02
2.50E+01 7.00E+00 3.00E+01
1.00E+01 4.00E+011.00E+01 7.00E+00 3.00E+011.00E+01 4.00E+01
3.50E-02 2.00E-03 3.00E-023.50E-02 1.00E+00
4.60E-01 2.10E+00 1.00E+00 2.10E+019.10E+00 2.00E+01
2.70E+01 6.00E+019.10E+01 2.00E+023.20E+01 7.00E+013.70E+00 8.00E+004.60E+03 1.00E+04
1.40E+02 3.00E+02
2.70E+02 3.10E+01 1.30E+02 4.60E+02 1.00E+03
4.10E+00 4.20E-03 9.00E+00 4.20E-021.80E+02 4.00E+027.30E+02 1.60E+031.40E+01 2.20E-04 3.00E+01 8.30E-03
1.90E-01 1.90E+00
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 42 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes101200-48-0 Pesticides express
22224-92-6 Pesticides fenamiphos2164-17-2 Pesticides fluometuron
206-44-0 PAHs fluoranthene86-73-7 PAHs fluorene
16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES59756-60-4 Pesticides fluridone56425-91-3 Pesticides flurprimidol66332-96-5 Pesticides flutolanil69409-94-5 Pesticides fluvalinate
133-07-3 Pesticides folpet72178-02-0 Pesticides fomesafen
944-22-9 Pesticides fonofos50-00-0 VOCs formaldehyde64-18-6 VOCs formic acid
39148-24-8 Pesticides fosetyl-al110-00-9 Furans furan
67-45-8 SVOCs furazolidone98-01-1 VOCs furfural
531-82-8 SVOCs furium60568-05-0 Pesticides furmecyclox77182-82-2 Pesticides glufosinate-ammonium
765-34-4 VOCs glycidaldehyde1071-83-6 SVOCs glyphosate
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion69806-40-2 Pesticides haloxyfop-methyl79277-27-3 Pesticides harmony
76-44-8 Pesticides heptachlor1024-57-3 Pesticides heptachlor epoxide
142-82-5 VOCs heptane;n-87-82-1 SVOCs hexabromobenzene
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'-118-74-1 Pesticides hexachlorobenzene
87-68-3 VOCs hexachlorobutadiene319-84-6 Pesticides hexachlorocyclohexane;alpha319-85-7 Pesticides hexachlorocyclohexane;beta-608-73-1 SVOCs hexachlorocyclohexane;technical
77-47-4 Pesticides hexachlorocyclopentadiene34465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture
67-72-1 VOCs hexachloroethane70-30-4 SVOCs hexachlorophene
822-06-0 VOCs hexamethylene diisocyanate;1,6-110-54-3 VOCs hexane;n-591-78-6 VOCs hexanone;2-
51235-04-2 Pesticides hexazinone302-01-2 VOCs hydrazine
10034-93-2 SVOCs hydrazine sulfate7647-01-0 VOCs hydrogen chloride
74-90-8 Cyanides hydrogen cyanide7783-06-4 VOCs hydrogen sulfide
123-31-9 SVOCs hydroquinone35554-44-0 Pesticides imazalil81335-37-7 Pesticides imazaquin
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione
7439-89-6 Metals iron
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
1.60E+01 6.00E+00 2.00E+016.10E+02 1.00E+01 7.00E+01
5.90E+00 1.30E+01
4.50E+00 1.90E-01 9.80E+00 1.90E+001.40E-01 3.00E-01
2.30E+01 5.00E+015.80E-03 5.80E-022.90E-01 2.90E+00
4.60E-01 1.00E+00
4.60E+00 1.00E+01
1.00E-05 3.40E-07 5.90E-06 1.90E-03 1.90E-027.40E-06 2.40E-06 3.20E-05 9.60E-04 9.60E-03
1.80E+02 4.00E+02
5.20E-05 5.00E-06 7.90E-05 5.40E-03 5.40E-024.10E+00 1.00E-02 1.00E-02 1.10E-01 1.10E+005.60E-04 4.80E-05 3.90E-04 1.40E-03 1.40E-022.00E-03 1.40E-03 1.40E-02 4.70E-03 4.70E-02
1.00E-02 4.90E-03 4.90E-026.30E+02 1.00E+00 4.00E+00 9.10E-02 2.00E-01
1.90E-06 1.90E-051.30E-01 2.00E-02 1.00E-01 1.40E+01 2.30E-01 3.00E+01 2.30E+00
4.60E-03 1.00E-023.20E+02 7.00E+021.40E+01 3.00E+01
1.40E-02 5.10E-04 3.00E-02 5.10E-035.10E-04 5.10E-03
9.10E+00 2.00E+013.70E-01 8.00E-019.10E-01 2.00E+00
2.10E-02 1.60E-04 1.30E-03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 43 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes78-83-1 VOCs isobutyl alcohol78-59-1 SVOCs isophorone
33820-53-0 Pesticides isopropalin1832-54-8 SVOCs isopropyl methyl phosphonic acid
82558-50-7 Pesticides isoxaben77501-63-4 Pesticides lactofen
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane
330-55-2 Pesticides (Carbamate) linuron7791-03-9 Perchlorates lithium perchlorate
83055-99-6 Pesticides londax121-75-5 Pesticides malathion108-31-6 SVOCs maleic anhydride123-33-1 SVOCs maleic hydrazide109-77-3 VOCs malononitrile
8018-01-7 Pesticides mancozeb12427-38-2 Pesticides maneb
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES
950-10-7 Pesticides mephosfolan24307-26-4 Pesticides mepiquat chloride
7487-94-7 Metal compounds mercuric chloride7439-97-6 Metals mercury
150-50-5 Pesticides merphos57837-19-1 Pesticides metalaxyl
126-98-7 VOCs methacrylonitrile10265-92-6 Pesticides methamidosphos
67-56-1 VOCs methanol950-37-8 Pesticides methidathion
16752-77-5 Pesticides (Carbamate) methomyl99-59-2 SVOCs methoxy-5-nitroaniline;2-72-43-5 Pesticides methoxychlor
110-49-6 VOCs methoxyethanol acetate;2-109-86-4 VOCs methoxyethanol;2-
79-20-9 VOCs methyl acetate96-33-3 VOCs methyl acrylate78-93-3 VOCs methyl ethyl ketone
108-10-1 VOCs methyl isobutyl ketone22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES
80-62-6 VOCs methyl methacrylate90-12-0 PAHs methyl naphthalene;1-91-57-6 PAHs methyl naphthalene;2-
298-00-0 Pesticides methyl parathion25013-15-4 VOCs methyl styrene
98-83-9 VOCs methyl styrene, alpha1634-04-4 VOCs methyl tert-butyl ether
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2-99-55-8 SVOCs methyl-5-nitroaniline;2-
636-21-5 SVOCs methylaniline hydrochloride;2-95-53-4 VOCs methylaniline;2-
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'-101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'-
74-95-3 VOCs methylene bromide75-09-2 VOCs methylene chloride
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI)9016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI)
101-77-9 SVOCs methylenebisbenzenamine;4,4-60-34-4 VOCs methylhydrazine
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
1.10E+02 1.80E+03 9.10E+02 2.00E+03
1.70E+01 4.30E-01 4.40E+00 8.10E-03 8.10E-02
3.20E-01 7.00E-01
1.00E+021.00E+02 2.30E-02 5.00E-02
1.40E-01 3.00E-011.40E-01 3.00E-01
1.40E+01 3.00E+01
9.10E+03 2.00E+04
2.00E-024.60E-01 1.00E+009.10E+00 2.00E+01
9.10E+00 2.00E+012.30E+03 5.00E+031.40E+03 3.00E+03
1.00E+00 3.00E-02 3.00E-013.20E+02 7.00E+02
1.80E+01 4.00E+01
1.40E+03 9.60E+00 3.00E+03 9.60E+01
6.80E-02 6.80E-014.90E-02 4.90E-015.80E-03 5.80E-021.90E-01 1.90E+00
1.80E+00 4.00E+002.50E+02 1.00E+02 1.00E+03 2.70E+02 6.60E+01 6.00E+02 2.50E+03
2.70E-01 6.00E-012.70E-01 6.00E-019.10E+00 5.40E-03 2.00E+01 5.40E-029.10E-03 2.50E-03 2.00E-02 2.50E-02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes51218-45-2 Pesticides metolachlor21087-64-9 Pesticides metribuzin
2385-85-5 Pesticides mirex2212-67-1 Pesticides molinate7439-98-7 Metals molybdenum
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS300-76-5 Pesticides naled
91-20-3 PAHs naphthalene15299-99-7 Pesticides napropamide
104-51-8 VOCs n-butylbenzeneE715532 Metals nickel refinery dust
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT12035-72-2 Metal compounds nickel subsulfide14797-55-8 Nutrients nitrate14797-65-0 Nutrients nitrite
88-74-4 SVOCs nitroaniline, 2-100-01-6 SVOCs nitroaniline, 4-
98-95-3 Explosives nitrobenzene67-20-9 SVOCs nitrofurantoin59-87-0 SVOCs nitrofurazone
556-88-7 SVOCs nitroguanidine79-46-9 VOCs nitropropane;2-
1116-54-7 SVOCs nitrosodiethanolamine;N-55-18-5 SVOCs nitrosodiethylamine;N-62-75-9 SVOCs nitrosodimethylamine;N-
924-16-3 VOCs nitroso-di-n-butylamine;N-621-64-7 SVOCs nitroso-di-n-propylamine;N-
86-30-6 SVOCs nitrosodiphenylamine;N-759-73-9 SVOCs nitroso-n-ethylurea;n-
10595-95-6 SVOCs nitroso-N-methylethylamine;N-684-93-5 SVOCs nitroso-n-methylurea,n-930-55-2 SVOCs nitrosopyrrolidine;N-
99-08-1 Explosives nitrotoluene, m-88-72-2 Explosives nitrotoluene, o-99-99-0 Explosives nitrotoluene, p-
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon85509-19-9 Pesticides nustar32536-52-0 PBDEs octabromodiphenyl ether
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine152-16-9 SVOCs octamethylpyrophosphoramide
19044-88-3 Pesticides oryzalin19666-30-9 Pesticides oxadiazon23135-22-0 Pesticides (Carbamate) oxamyl42874-03-3 Pesticides oxyfluorfen76738-62-0 Herbicides paclobutrazol
1910-42-5 Pesticides Paraquat Dichloride56-38-2 Pesticides parathion
1114-71-2 Pesticides pebulate40487-42-1 Pesticides pendimethalin
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5-60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5-32534-81-9 PBDEs pentabromodiphenyl ethers
608-93-5 SVOCs pentachlorobenzene82-68-8 Pesticides pentachloronitrobenzene87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT
14797-73-0 Perchlorates perchlorate and perchlorate salts52645-53-1 Pesticides permethrin
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
4.90E-04 4.90E-03
1.40E+00 7.40E-02 3.00E+00 7.40E-01
6.40E-03 1.00E-02 1.40E-02 1.00E-011.90E+02 1.00E+02 4.60E+03 4.10E-02 9.60E-03 9.00E-02 9.60E-02
6.40E-03 5.20E-03 1.40E-02 5.20E-02
2.30E-02 5.00E-022.70E+00 6.00E+00
3.20E+02 1.00E+02 6.00E+02 4.10E+00 6.30E-02 9.00E+00 6.30E-01
6.80E-03 6.80E-02
9.10E+00 9.30E-04 2.00E+01 9.30E-033.10E-03 3.10E-02
1.20E+00 5.80E-05 5.80E-043.40E-01 3.00E+00 1.80E-02 1.80E-04 4.00E-02 1.80E-03
2.20E-01 1.60E-03 1.60E-025.80E-02 5.10E-01 1.30E-03 1.30E-026.90E-01 6.00E+00 9.60E-01 9.60E+00
3.20E-04 3.20E-034.00E-04 4.00E-037.40E-05 7.40E-04
3.40E+01 4.10E-03 4.10E-02
1.00E-01
1.00E-01 2.00E-03 4.00E-02 4.90E-01 4.90E+00
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notesunavailable19 General Chemistry pH pH NOTES
13684-63-4 Pesticides phenmedipham108-95-2 Phenols phenol106-50-3 SVOCs phenylenediamine, p-108-45-2 SVOCs phenylenediamine;m-
95-54-5 SVOCs phenylenediamine;o-62-38-4 Metals (organometallic) phenylmercuric acetate90-43-7 Phenols phenylphenol;2-
298-02-2 Pesticides phorate75-44-5 VOCs phosgene
732-11-6 Pesticides phosmet7803-51-2 Gases phosphine7664-38-2 SVOCs phosphoric acid7723-14-0 Nonmetal inorganics phosphorus
100-21-0 Phthalates phthalic acid;p-85-44-9 Phthalates phthalic anhydride
1918-02-1 Herbicides picloram29232-93-7 Pesticides pirimiphos-methyl36355-01-8 PBBs polybrominated biphenyls
1336-36-3 PCBs polychlorinated biphenyls (PCBs)151-50-8 Cyanides potassium cyanide
7778-74-7 Perchlorates potassium perchlorate506-61-6 Cyanides potassium silver cyanide
67747-09-5 Pesticides prochloraz (not in HSDB)26399-36-0 Pesticides profluralin
1610-18-0 Pesticides prometon7287-19-6 Pesticides prometryn
23950-58-5 Pesticides pronamide1918-16-7 Pesticides propachlor
709-98-8 Pesticides propanil2312-35-8 Pesticides propargite
107-19-7 VOCs propargyl alcohol139-40-2 Pesticides propazine122-42-9 Pesticides propham
60207-90-1 Pesticides propiconazole123-38-6 VOCs propionaldehyde
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2-103-65-1 VOCs propylbenzene;n-
57-55-6 Glycols propylene glycol6423-43-4 Glycols propylene glycol dinitrate;1,2-
52125-53-8 Glycols propylene glycol monoethyl ether107-98-2 Glycols propylene glycol monomethyl ether
75-56-9 VOCs propylene oxide81335-77-5 Pesticides pursuit51630-58-1 Pesticides pydrin
129-00-0 PAHs pyrene110-86-1 VOCs pyridine
13593-03-8 Pesticides quinalphos91-22-5 SVOCs quinoline
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdxE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE
10453-86-8 Pesticides resmethrin299-84-3 Pesticides ronnel
83-79-4 Pesticides rotenone78-48-8 Pesticides s,s;s-tributylphosphorotrithioate
78587-05-0 Pesticides savey
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
2.00E+05 7.00E+04 3.00E+05 9.10E+01 2.00E+02
1.40E-01 3.00E-01
1.40E-01 3.00E-014.60E+00 1.00E+01
9.10E+00 2.00E+01
2.90E-04 2.90E-031.70E-04 7.00E-06 6.40E-05 4.40E-03 4.40E-02
3.70E+00 8.00E+00
4.60E+02 1.00E+03
1.20E-01 2.70E-01
9.10E+02 2.00E+031.40E+01 6.80E-01 3.00E+01 6.80E+00
4.60E+02 8.00E+00 3.00E+01
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes135-98-8 VOCs sec-butylbenzene
7783-00-8 Metal compounds selenious acid7782-49-2 Metals selenium and compounds
74051-80-2 Pesticides sethoxydim7440-22-4 Metals SILVER HARDNESS - DEPENDENT
506-64-9 Cyanides silver cyanide122-34-9 Pesticides simazine
26628-22-8 Metal compounds sodium azide143-33-9 Cyanides sodium cyanide148-18-5 Metals (organometallic) sodium diethyldithiocarbamate
62-74-8 Metals (organometallic) sodium fluoroacetate13718-26-8 Metal compounds sodium metavanadate
7601-89-0 Perchlorates sodium perchlorate7440-24-6 Metals strontium
57-24-9 SVOCs strychnine100-42-5 VOCs styrene
88671-89-0 Pesticides systhane1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES
34014-18-1 Pesticides tebuthiuron3383-96-8 Pesticides temephos5902-51-2 Pesticides terbacil
13071-79-9 SVOCs terbufos886-50-0 Pesticides terbutryn
98-06-6 VOCs tert-butylbenzene5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4'
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5-630-20-6 VOCs tetrachloroethane;1,1,1,2-
79-34-5 VOCs tetrachloroethane;1,1,2,2-127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,-
961-11-5 Pesticides tetrachlorvinphos3689-24-5 Pesticides tetraethyl dithiopyrophosphate
78-00-2 Metals (organometallic) tetraethyl lead811-97-2 VOCs tetrafluoroethane;1,1,1,2-109-99-9 Furans tetrahydrofuran
1314-32-5 Metal compounds thallic oxide563-68-8 Metal compounds thallium acetate
6533-73-9 Metal compounds thallium carbonate7791-12-0 Metal compounds thallium chloride
10102-45-1 Metal compounds thallium nitrate12039-52-0 Metal compounds thallium selenite
7446-18-6 Metal compounds thallium(I) sulfate7440-28-0 Metals thallium, soluble salts
28249-77-6 Pesticides thiobencarb21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2-39196-18-4 Pesticides thiofanox23564-05-8 Pesticides thiophanate-methyl
137-26-8 Pesticides thiram7440-31-5 Metals tin
118-96-7 Explosives tnt108-88-3 VOCs toluene
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6-584-84-9 VOCs toluene-2,4-diisocyanate
91-08-7 VOCs toluene-2,6-diisocyanate95-70-5 SVOCs toluenediamine;2,5-
106-49-0 SVOCs toluidine;p-8001-35-2 Pesticides toxaphene
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
4.80E+02 2.00E+02 4.20E+03 9.10E+00 2.00E+01
4.60E+02 1.00E+03
6.40E-08 1.40E-08 5.10E-09 1.80E-05 6.60E-08 4.00E-05 6.60E-07
3.00E-023.40E-01 3.40E+00
4.60E-01 3.00E-01 3.00E+00 4.30E-02 4.30E-017.10E+00 2.90E+00 2.90E+01 1.80E+01 9.60E+00 4.00E+01 9.60E+01
3.70E+04 8.00E+049.10E+02 2.00E+03
2.70E-01 6.30E+00 4.70E-01
4.10E+02 1.30E+02 5.20E+02 2.30E+03 5.00E+032.30E-01 2.30E+00
3.70E-03 2.30E-01 8.00E-03 2.30E+003.70E-03 2.30E-01 8.00E-03 2.30E+00
3.20E-05 7.10E-04 7.80E-03 7.80E-02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 47 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes93-72-1 Herbicides tp;2,4,5-
unavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin2303-17-5 Pesticides triallate
82097-50-5 Pesticides triasulfuron615-54-3 VOCs tribromobenzene;1,2,4-688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2-76-03-9 SVOCs trichloroacetic acid
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6-634-93-5 SVOCs trichloroaniline;2,4,6-120-82-1 VOCs trichlorobenzene;1,2,4-
71-55-6 VOCs trichloroethane;1,1,1-79-00-5 VOCs trichloroethane;1,1,2-79-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES75-69-4 VOCs trichlorofluoromethane95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5-
598-77-6 VOCs trichloropropane;1,1,2-96-18-4 VOCs trichloropropane;1,2,3-96-19-5 VOCs trichloropropene;1,2,3-
58138-08-2 Pesticides tridiphane121-44-8 VOCs triethylamine
1582-09-8 Pesticides trifluralinunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate526-73-8 VOCs trimethylbenzene;1,2,3-
95-63-6 VOCs trimethylbenzene;1,2,4-108-67-8 VOCs trimethylbenzene;1,3,5-
99-35-4 Explosives trinitrobenzene;1,3,5-479-45-8 Explosives trinitrophenylmethylnitramine
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS7440-62-2 Metals vanadium1314-62-1 Metal compounds vanadium pentoxide1929-77-7 Pesticides vernam
50471-44-8 Pesticides vinclozolin108-05-4 VOCs vinyl acetate
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES81-81-2 Pesticides warfarin
8012-95-1 Petroleum white mineral oil108-38-3 VOCs xylene;m-
95-47-6 VOCs xylene;o-106-42-3 VOCs xylene;p-
1330-20-7 VOCs xylenes7440-66-6 Metals ZINC HARDNESS - DEPENDENT
557-21-1 Cyanides zinc cyanide1314-84-7 Metal compounds zinc phosphide
12122-67-7 Pesticides zineb
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
4.00E+02
2.30E+03 5.00E+03
1.40E-01 3.70E-02 7.60E-02 9.10E-01 2.00E+001.60E+05 5.00E+04 2.00E+05 2.30E+03 5.00E+031.80E+00 9.00E-01 8.90E+00 9.10E-02 1.60E-01 2.00E-01 1.60E+008.60E-01 7.00E-01 7.00E+00 9.10E-01 3.30E-01 2.00E+00 6.10E+00
3.20E+02 7.00E+026.00E+02
2.80E-01 2.80E+00 8.10E-01 8.10E+00
1.40E-01 3.00E-011.40E-01 3.00E-01
3.20E+00 7.00E+00
2.70E+01 6.00E+012.70E+01 6.00E+012.70E+01 6.00E+01
1.80E-02 4.00E-024.60E-02 1.00E-013.20E-03 3.00E-04 7.00E-03 3.00E-03
9.10E+01 2.00E+022.60E-01 1.80E-01 1.60E+00 4.60E+01 2.80E-01 1.00E+02 2.80E+00
4.60E+01 1.00E+024.60E+01 1.00E+024.60E+01 1.00E+024.60E+01 1.00E+02
2.90E+03 1.00E+03 2.60E+04
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes83-32-9 PAHs acenaphthene
30560-19-1 Pesticides acephate75-07-0 VOCs acetaldehyde
34256-82-1 Pesticides acetochlor67-64-1 VOCs acetone75-86-5 VOCs acetone cyanohydrin75-05-8 VOCs acetonitrile98-86-2 SVOCs acetophenone
62476-59-9 Herbicides acifluorfen, sodium107-02-8 VOCs acrolein
79-06-1 VOCs acrylamide79-10-7 VOCs acrylic acid
107-13-1 VOCs acrylonitrile15972-60-8 Pesticides alachlor
1596-84-5 Pesticides alar116-06-3 Pesticides (Carbamate) aldicarb
1646-88-4 Pesticides (Carbamate) aldicarb sulfone309-00-2 Pesticides aldrin
74223-64-6 Pesticides ally107-18-6 VOCs allyl alcohol107-05-1 VOCs allyl chloride
7429-90-5 Metals aluminum20859-73-8 Metal compounds aluminum phosphide67485-29-4 Pesticides amdro
834-12-8 Pesticides ametryn591-27-5 Phenols aminophenol;m-
33089-61-1 Pesticides amitraz7664-41-7 Nutrients AMMONIA AMMONIA NOTES7790-98-9 Perchlorates ammonium perchlorate7773-06-0 Pesticides ammonium sulfamate
62-53-3 SVOCs aniline120-12-7 PAHs anthracene
7440-36-0 Metals antimony1314-60-9 Metal compounds antimony pentoxide
28300-74-5 Metal compounds antimony potassium tartrate1332-81-6 Metal compounds antimony tetroxide1309-64-4 Metal compounds antimony trioxide
74115-24-5 Pesticides apollo140-57-8 SVOCs aramite
12674-11-2 PCBs aroclor 101611097-69-1 PCBs aroclor 125411096-82-5 PCBs aroclor 1260
7440-38-2 Metals arsenic, inorganic7784-42-1 Gases arsine1332-21-4 Fibers ASBESTOS ASBESTOS NOTE
76578-14-8 Pesticides assure3337-71-1 Pesticides asulam1912-24-9 Pesticides atrazine
65195-55-3 Pesticides avermectin B1103-33-3 Pesticides azobenzene
7440-39-3 Metals barium and compounds114-26-1 Pesticides baygon
43121-43-3 Pesticides bayleton68359-37-5 Pesticides baythroid
1861-40-1 Pesticides benefin17804-35-2 Pesticides benomyl25057-89-0 Herbicides bentazon
100-52-7 SVOCs benzaldehyde
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
4.24E+00 2.42E+02 6.36E-03 2.11E-03 1 4.90E+03 4.90E+00 1 9.60E+02 N1 1
2.15E-03 2 11 1
1.00E+06 1.59E-03 9.68E-04 2 5.75E-01 5.75E-04 1 7.20E+03 N2 1
8.37E-04 2 11.61E-04 2 1
2 13.11E-03 2 1
2 12 1
3.00E+01 2.34E-03 2 11 11 11 11 1
1.80E-01 4.67E+03 6.97E-03 1.60E-03 2 4.87E+04 4.87E+01 1 2.57E-03 C1 12 12 1
0.00E+00 0.00E+00 1 11 11 11 11 11 12 11 11 12 1
4.34E-02 3.00E+01 2.67E-03 7.56E-04 1 2.35E+04 2.35E+01 1 4.80E+03 N1.00E+00 0.00E+00 0.00E+00 1 4.50E+01 4.50E+01 1 6.00E+00 MCL
1 11 11 11 11 11 1
3.12E+04 1 1.07E+05 1.07E+02 1 1.12E+00 N3.12E+04 1 8.10E+05 8.10E+02 1 4.38E-02 C
1 8.22E+05 8.22E+02 1 4.38E-02 C4.40E+01 0.00E+00 0.00E+00 1 2.90E+01 2.90E+01 1 5.00E+00 Background
2 11 11 11 11 11 11 1
0.00E+00 0.00E+00 1 4.10E+01 4.10E+01 1 2.00E+03 MCL1 11 1 ##1 12 11 11 1
3.72E-04 2 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 49 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes71-43-2 VOCs BENZENE
108-98-5 SVOCs benzenethiol92-87-5 SVOCs benzidine56-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT98-07-7 VOCs benzotrichloride
100-51-6 SVOCs benzyl alcohol100-44-7 VOCs benzyl chloride
7440-41-7 Metals beryllium91-58-7 PAHs beta-chloronaphthalene
141-66-2 Pesticides bidrin82657-04-3 Pesticides biphenthrin
92-52-4 PAHs biphenyl;1,1-108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether111-44-4 SVOCs bis(2-chloroethyl)ether117-81-7 Phthalates bis(2-ethylhexyl) phthalate542-88-1 VOCs bis(chloromethyl)ether
80-05-7 Phenols bisphenol a7440-42-8 Metals boron
15541-45-4 Pesticides bromate79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene75-27-4 VOCs bromodichloromethane TTHM NOTES
593-60-2 VOCs bromoethene75-25-2 VOCs bromoform TTHM NOTES74-83-9 VOCs bromomethane
2104-96-3 Pesticides bromophos1689-84-5 Pesticides bromoxynil1689-99-2 Pesticides bromoxynil octanoate
106-99-0 VOCs butadiene;1,3-71-36-3 VOCs butanol;n-85-68-7 Phthalates butyl benzyl phthalate
2008-41-5 Pesticides butylate85-70-1 Phthalates butylphthalyl butylglycolate94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)-75-60-5 Pesticides cacodylic acid
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES
592-01-8 Cyanides calcium cyanide105-60-2 SVOCs caprolactam
2425-06-1 Pesticides captafol133-06-2 Pesticides captan
63-25-2 Pesticides (Carbamate) carbaryl1563-66-2 Pesticides (Carbamate) carbofuran
75-15-0 VOCs carbon disulfide56-23-5 VOCs carbon tetrachloride
55285-14-8 Pesticides carbosulfan5234-68-4 Pesticides carboxin1306-38-3 Metals cerium oxide and cerium compounds
302-17-0 VOCs chloral hydrate133-90-4 Herbicides chloramben118-75-2 Pesticides chloranil
12789-03-6 Pesticides chlordane143-50-0 Pesticides chlordecone (kepone)
16887-00-6 Nutrients chloride
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1.75E+03 5.20E+00 2.28E-01 1.33E-01 2 6.17E+01 6.17E-02 1 5.00E+00 MCL2 1
8.75E+01 1 19.40E-03 3.00E+01 1.37E-04 2.79E-05 1 3.58E+05 3.58E+02 11.62E-03 3.00E+01 4.63E-05 6.39E-06 1 9.69E+05 9.69E+02 1 2.00E-01 MCL1.50E-03 3.00E+01 4.55E-03 7.73E-04 1 1.23E+06 1.23E+03 18.00E-04 3.00E+01 3.40E-05 5.13E-06 1 1.23E+06 1.23E+03 13.50E+03 6.31E-05 4.88E-06 1 6.00E-01 6.00E-04 1 6.40E+04 N
2 12 1
8.25E-03 2 11.90E+01 0.00E+00 0.00E+00 1 7.90E+02 7.90E+02 1 4.00E+00 MCL2.02E+02 2 1
1 11 1
4.73E-03 2 12.47E+00 2 1
1.72E+04 6.90E+00 7.38E-04 2.93E-04 2 7.59E+01 7.59E-02 1 3.98E-02 C3.40E-01 1.30E+02 4.18E-06 6.56E-07 1 1.11E+05 1.11E+02 1 6.00E+00 MCL
2 11 1
0.00E+00 0.00E+00 1 11 11 1
4.46E+02 1.01E-01 4.33E-02 2 2.34E+02 2.34E-01 1 6.40E+01 N6.74E+03 3.75E+00 6.56E-02 3.69E-02 2 5.50E+01 5.50E-02 1 7.06E+00 MCL C ADJ
2 13.10E+03 3.75E+00 2.19E-02 1.16E-02 2 1.26E+02 1.26E-01 1 5.54E+01 MCL C ADJ1.52E+04 3.75E+00 2.56E-01 1.78E-01 2 9.00E+00 9.00E-03 1 1.12E+01 N
1 11 11 1
2.17E+00 2 17.40E+04 3.61E-04 1.55E-04 2 6.92E+00 6.92E-03 1 8.00E+02 N2.69E+00 4.14E+02 5.17E-05 1.11E-05 1 1.37E+04 1.37E+01 1 4.61E+01 C
2 11 11 11 1
6.40E+01 0.00E+00 0.00E+00 1 6.70E+00 6.70E+00 1 5.00E+00 MCL6.40E+01 0.00E+00 0.00E+00 1 1
1 11 11 11 11 11 1
1.19E+03 1.24E+00 8.03E-01 2 4.57E+01 4.57E-02 1 8.00E+02 N7.93E+02 1.88E+01 1.25E+00 7.42E-01 2 1.52E+02 1.52E-01 1 5.00E+00 MCL
1 11 11 12 11 11 1
5.60E-02 1.41E+04 1.99E-03 5.15E-04 1 5.13E+04 5.13E+01 1 2.00E+00 MCL1 11 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 50 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes90982-32-4 Pesticides chlorimuron-ethyl
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS506-77-4 Cyanides chlorine cyanide
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS7758-19-2 Nutrients chlorite
75-68-3 VOCs chloro-1,1-difluoroethane;1-126-99-8 VOCs chloro-1,3-butadiene;2-
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4-95-69-2 SVOCs chloro-2-methylaniline;4-79-11-8 SVOCs chloroacetic acid
532-27-4 SVOCs chloroacetophenone;2-106-47-8 SVOCs chloroaniline;p-108-90-7 VOCs chlorobenzene510-15-6 Pesticides chlorobenzilate
74-11-3 Pesticides chlorobenzoic acid;p-98-56-6 VOCs chlorobenzotrifluoride;4-
109-69-3 VOCs chlorobutane;1-59-50-7 Phenols chlorocresol75-45-6 VOCs chlorodifluoromethane67-66-3 VOCs chloroform TTHM NOTES74-87-3 VOCs chloromethane
107-30-2 VOCs chloromethyl methyl ether88-73-3 Pesticides chloronitrobenzene;o-
100-00-5 Pesticides chloronitrobenzene;p-95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT
1897-45-6 Pesticides chlorothalonil95-49-8 VOCs chlorotoluene;o-
101-21-3 Pesticides chlorpropham2921-88-2 Pesticides chlorpyrifos5598-13-0 Pesticides chlorpyrifos-methyl
64902-72-3 Pesticides chlorsulfuron60238-56-4 Pesticides chlorthiophos
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt
E649830 VOCs coke oven emissions7440-50-8 Metals COPPER HARDNESS - DEPENDENT
544-92-3 Cyanides copper cyanide108-39-4 Phenols cresol;m-
95-48-7 Phenols cresol;o-106-44-5 Phenols cresol;p-123-73-9 VOCs crotonaldehyde
98-82-8 VOCs cumene21725-46-2 Pesticides cyanazine
57-12-5 Cyanides CYANIDE CYANIDE NOTES460-19-5 Cyanides cyanogen506-68-3 Cyanides cyanogen bromide110-82-7 VOCs cyclohexane108-94-1 VOCs cyclohexanone108-91-8 VOCs cyclohexylamine
68085-85-8 Pesticides cyhalothrin/karate52315-07-8 Pesticides cypermethrin66215-27-8 Pesticides cyromazine
1861-32-1 Herbicides dacthal75-99-0 Herbicides dalapon, sodium salt
39515-41-8 Pesticides danitol
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 12 12 12 11 12 1
2.75E-01 2 11 11 11 11 1
5.30E+03 1.36E-05 4.85E-06 2 6.61E+01 6.61E-02 1 2.19E-01 C4.72E+02 1.03E+01 1.52E-01 7.87E-02 2 2.24E+02 2.24E-01 1 1.00E+02 MCL
1 11 12 1
4.06E-01 2 11 1
8.61E-01 2 17.92E+03 3.75E+00 1.50E-01 9.15E-02 2 5.25E+01 5.25E-02 1 1.41E+01 MCL C ADJ
3.75E+00 2.68E-01 2 6.00E+00 6.00E-03 12 11 12 1
2.20E+04 1.34E+02 1.60E-02 7.25E-03 2 3.88E+02 3.88E-01 1 4.00E+01 N1 12 11 11 11 11 11 11 1
1.60E+01 0.00E+00 0.00E+00 1 1.00E+03 1.00E+03 1 2.40E+04 N1.60E+01 0.00E+00 0.00E+00 1 1.90E+01 1.90E+01 1 4.80E+01 N
1.60E-03 3.00E+01 3.88E-03 7.13E-04 1 3.98E+05 3.98E+02 10.00E+00 0.00E+00 1 4.50E+01 4.50E+01 1 4.80E+00 N
2 13.60E+01 0.00E+00 0.00E+00 1 2.20E+01 2.20E+01 1 6.40E+02 N
1 12 1
2.60E+04 4.92E-05 1.95E-05 2 9.12E+01 9.12E-02 1 4.00E+02 N2 1
4.37E-04 2 12.55E-01 2 1
1 11.00E+00 1 1
2 12 11 12 12 11 11 11 11 12 11 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 51 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes94-82-6 Pesticides db;2,4-72-54-8 Pesticides ddd72-55-9 Pesticides dde50-29-3 Pesticides ddt
1163-19-5 PBDEs decabromodiphenyl ether8065-48-3 Pesticides demeton
103-23-1 Phthalates di(2-ethylhexyl)adipate2303-16-4 Pesticides diallate
333-41-5 Pesticides diazinon53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran96-12-8 Pesticides dibromo-3-chloropropane;1,2-
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4-124-48-1 VOCs dibromochloromethane TTHM NOTES
84-74-2 Phthalates di-butyl phthalate1918-00-9 Herbicides dicamba3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4-79-43-6 SVOCs dichloroacetic acid95-50-1 VOCs dichlorobenzene;1,2-
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4-
91-94-1 SVOCs dichlorobenzidine;3,3'-75-71-8 VOCs dichlorodifluoromethane75-34-3 VOCs dichloroethane;1,1-
107-06-2 VOCs dichloroethane;1,2-540-59-0 VOCs dichloroethylene,1,2- (mixed isomers)
75-35-4 VOCs dichloroethylene;1,1-156-59-2 VOCs dichloroethylene;1,2-,cis156-60-5 VOCs dichloroethylene;1,2-,trans120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4-78-87-5 VOCs dichloropropane;1,2-
616-23-9 SVOCs dichloropropanol;2,3-542-75-6 VOCs dichloropropene;1,3-
62-73-7 Pesticides dichlorvos77-73-6 VOCs dicyclopentadiene60-57-1 Pesticides dieldrin84-66-2 Phthalates diethyl phthalate
112-34-5 Glycols diethylene glycol monobutyl ether111-90-0 Glycols diethylene glycol monoethyl ether617-84-5 SVOCs diethylformamide
56-53-1 SVOCs diethylstilbesterol43222-48-6 Pesticides difenzoquat35367-38-5 Pesticides diflubenzuron
75-37-6 VOCs difluoroethane;1,1-1445-75-6 VOCs diisopropyl methylphosphonate
55290-64-7 Pesticides dimethipin60-51-5 Pesticides dimethoate
119-90-4 SVOCs dimethoxybenzidine;3,3'-131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4-95-68-1 SVOCs dimethylaniline;2,4-
121-69-7 VOCs dimethylaniline;N,N-119-93-7 SVOCs dimethylbenzidine;3,3'-
68-12-2 VOCs dimethylformamide;N,N-
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 19.00E-02 5.36E+04 1.64E-04 2.89E-05 1 4.58E+04 4.58E+01 1 3.65E-01 C1.20E-01 5.36E+04 8.61E-04 1.87E-04 1 8.64E+04 8.64E+01 1 2.57E-01 C2.50E-02 5.36E+04 3.32E-04 3.83E-05 1 6.78E+05 6.78E+02 1 2.57E-01 C
3.20E+00 1 11 11 11 11 1
2.49E-03 3.00E+01 6.03E-07 6.03E-07 1 1.79E+06 1.79E+03 11.71E-04 1 1
2 11 12 1
2.60E+03 3.75E+00 3.21E-02 2.06E-02 2 6.31E+01 6.31E-02 1 5.21E+00 MCL C ADJ1.12E+01 8.90E+01 3.85E-08 8.16E-09 1 1.57E+03 1.57E+00 1 1.60E+03 N
1 11 12 11 1
1.56E+02 5.56E+01 7.79E-02 3.54E-02 2 3.79E+02 3.79E-01 1 6.00E+02 MCL5.98E-02 2 1
7.38E+01 5.56E+01 9.96E-02 4.61E-02 2 6.16E+02 6.16E-01 1 7.50E+01 MCL3.11E+00 3.12E+02 1.64E-07 2.23E-08 1 7.24E+02 7.24E-01 1 1.94E-01 C
8.10E+00 2 15.06E+03 2.30E-01 1.41E-01 2 5.34E+01 5.34E-02 1 7.68E+00 C8.52E+03 1.20E+00 4.01E-02 2.28E-02 2 3.80E+01 3.80E-02 1 4.81E+00 MCL C ADJ
2 12.25E+03 5.60E+00 1.07E+00 7.06E-01 2 6.50E+01 6.50E-02 1 7.00E+00 MCL3.50E+03 1.67E-01 1.00E-01 2 3.55E+01 3.55E-02 1 1.60E+01 N6.30E+03 1.58E+00 3.85E-01 2.41E-01 2 3.80E+01 3.80E-02 1 1.00E+02 MCL4.50E+03 4.07E+01 1.30E-04 3.43E-05 2 1.47E+02 1.47E-01 1 2.40E+01 N
1 12.80E+03 4.11E+00 1.15E-01 6.47E-02 2 4.70E+01 4.70E-02 1 5.00E+00 MCL
2 12.80E+03 1.91E+00 7.26E-01 3.96E-01 2 2.71E+01 2.71E-02 1 4.38E-01 C
2 12 1
1.95E-01 4.67E+03 6.19E-04 1.13E-04 1 2.55E+04 2.55E+01 1 5.47E-03 C1.08E+03 7.30E+01 1.85E-05 4.70E-06 1 8.22E+01 8.22E-02 1 1.28E+04 N
2 12 11 11 11 11 12 12 11 11 11 1
3.60E+01 1 12 11 12 12 11 12 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 52 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes57-14-7 VOCs dimethylhydrazine;1,1-
540-73-8 VOCs dimethylhydrazine;1,2-105-67-9 Phenols dimethylphenol;2,4-576-26-1 Phenols dimethylphenol;2,6-
95-65-8 Phenols dimethylphenol;3,4-99-65-0 Explosives dinitrobenzene;m-
528-29-0 SVOCs dinitrobenzene;o-100-25-4 SVOCs dinitrobenzene;p-131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6-
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6-121-14-2 Explosives dinitrotoluene;2,4-606-20-2 Explosives dinitrotoluene;2,6-117-84-0 Phthalates di-n-octyl phthalate
88-85-7 Herbicides dinoseb123-91-1 VOCs dioxane;1,4-957-51-7 Pesticides diphenamid122-39-4 Pesticides diphenylamine122-66-7 SVOCs diphenylhydrazine;1,2-
85-00-7 Pesticides diquat1937-37-7 Dyes direct black 382602-46-2 Dyes direct blue 6
16071-86-6 Dyes direct brown 95298-04-4 Pesticides disulfoton505-29-3 SVOCs dithiane;1,4-330-54-1 Pesticides (Carbamate) diuron534-52-1 Phenols DNOC
2439-10-3 Pesticides dodine115-29-7 Pesticides endosulfan
1031-07-8 Pesticides endosulfan sulfate959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall
72-20-8 Pesticides endrin7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin106-88-7 VOCs epoxybutane
16672-87-0 Pesticides ethephon563-12-2 Pesticides ethion111-15-9 VOCs ethoxyethanol acetate;2-110-80-5 VOCs ethoxyethanol;2-141-78-6 VOCs ethyl acetate140-88-5 VOCs ethyl acrylate
75-00-3 VOCs ethyl chloride759-94-4 Pesticides ethyl dipropylthiocarbamate;S-
60-29-7 VOCs ethyl ether97-63-2 VOCs ethyl methacrylate
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate100-41-4 VOCs ethylbenzene109-78-4 SVOCs ethylene cyanohydrin107-15-3 VOCs ethylene diamine106-93-4 VOCs ethylene dibromide (EDB)107-21-1 VOCs ethylene glycol111-76-2 Glycols ethylene glycol monobutyl ether (EGBE)
75-21-8 VOCs ethylene oxide96-45-7 SVOCs ethylene thiourea84-72-0 Phthalates ethylphthalyl ethylglycolate
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
2 12 1
7.87E+03 9.38E+01 8.20E-05 3.02E-05 2 2.09E+02 2.09E-01 1 1.60E+02 N2 12 11 11 11 11 1
2.79E+03 1.50E+00 1.82E-05 1.48E-06 1 1.00E-02 1.00E-05 1 3.20E+01 N1 11 1
2.70E+02 3.80E+00 3.80E-06 1.02E-06 1 9.55E+01 9.55E-02 1 2.82E-01 C1.82E+02 3.06E-05 8.83E-06 1 6.92E+01 6.92E-02 1 5.83E-02 C2.00E-02 2.74E-03 5.20E-04 1 8.32E+07 8.32E+04 1 1.60E+02 N
1 12 11 1
3.00E+01 1 12.49E+01 1 1
1 11 11 11 11 11 11 11 11 1
5.10E-01 2.70E+02 4.59E-04 1.14E-04 1 2.04E+03 2.04E+00 1 9.60E+01 N1 11 11 11 1
2.50E-01 3.97E+03 3.08E-04 6.63E-05 1 1.08E+04 1.08E+01 1 2.00E+00 MCL1 12 12 11 11 12 12 1
3.19E-03 2 12 1
2.47E-01 2 12 1
8.76E-01 2 11.42E-02 2 1
1 11.69E+02 3.75E+01 3.23E-01 1.62E-01 2 2.04E+02 2.04E-01 1 7.00E+02 MCL
2 12 1
1.54E-02 2 6.60E+01 6.60E-02 1 5.00E-02 MCL2 12 1
1.54E-02 2 11 11 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes101200-48-0 Pesticides express
22224-92-6 Pesticides fenamiphos2164-17-2 Pesticides fluometuron
206-44-0 PAHs fluoranthene86-73-7 PAHs fluorene
16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES59756-60-4 Pesticides fluridone56425-91-3 Pesticides flurprimidol66332-96-5 Pesticides flutolanil69409-94-5 Pesticides fluvalinate
133-07-3 Pesticides folpet72178-02-0 Pesticides fomesafen
944-22-9 Pesticides fonofos50-00-0 VOCs formaldehyde64-18-6 VOCs formic acid
39148-24-8 Pesticides fosetyl-al110-00-9 Furans furan
67-45-8 SVOCs furazolidone98-01-1 VOCs furfural
531-82-8 SVOCs furium60568-05-0 Pesticides furmecyclox77182-82-2 Pesticides glufosinate-ammonium
765-34-4 VOCs glycidaldehyde1071-83-6 SVOCs glyphosate
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion69806-40-2 Pesticides haloxyfop-methyl79277-27-3 Pesticides harmony
76-44-8 Pesticides heptachlor1024-57-3 Pesticides heptachlor epoxide
142-82-5 VOCs heptane;n-87-82-1 SVOCs hexabromobenzene
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'-118-74-1 Pesticides hexachlorobenzene
87-68-3 VOCs hexachlorobutadiene319-84-6 Pesticides hexachlorocyclohexane;alpha319-85-7 Pesticides hexachlorocyclohexane;beta-608-73-1 SVOCs hexachlorocyclohexane;technical
77-47-4 Pesticides hexachlorocyclopentadiene34465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture
67-72-1 VOCs hexachloroethane70-30-4 SVOCs hexachlorophene
822-06-0 VOCs hexamethylene diisocyanate;1,6-110-54-3 VOCs hexane;n-591-78-6 VOCs hexanone;2-
51235-04-2 Pesticides hexazinone302-01-2 VOCs hydrazine
10034-93-2 SVOCs hydrazine sulfate7647-01-0 VOCs hydrogen chloride
74-90-8 Cyanides hydrogen cyanide7783-06-4 VOCs hydrogen sulfide
123-31-9 SVOCs hydroquinone35554-44-0 Pesticides imazalil81335-37-7 Pesticides imazaquin
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione
7439-89-6 Metals iron
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 11 11 1
2.06E-01 1.15E+03 6.60E-04 1.66E-04 1 4.91E+04 4.91E+01 1 6.40E+02 N1.98E+00 3.00E+01 2.61E-03 8.58E-04 1 7.71E+03 7.71E+00 1 6.40E+02 N
1 11 11 11 11 11 11 11 12 12 11 1
1.43E-01 2 11 12 11 11 11 12 11 11 11 11 11 11 1
1.80E-01 1.12E+04 4.47E-02 1.27E-02 1 9.53E+03 9.53E+00 1 1.94E-01 MCL C ADJ2.00E-01 1.12E+04 3.90E-04 8.01E-05 2 8.32E+04 8.32E+01 1 4.81E-02 MCL C ADJ
2 11 11 1
6.20E+00 8.69E+03 5.41E-02 1.36E-02 1 8.00E+04 8.00E+01 1 5.47E-01 MCL C ADJ3.23E+00 2.78E+00 3.34E-01 1.41E-01 2 5.37E+04 5.37E+01 1 5.61E-01 C2.00E+00 1.30E+02 4.35E-04 1.02E-04 1 1.76E+03 1.76E+00 1 1.39E-02 C2.40E-01 1.30E+02 3.05E-05 4.81E-06 1 2.14E+03 2.14E+00 1 4.86E-02 C
1 11.80E+00 4.34E+00 1.11E+00 4.18E-01 2 2.00E+05 2.00E+02 1 4.80E+01 N
1 15.00E+01 8.69E+01 1.59E-01 7.24E-02 2 1.78E+03 1.78E+00 1 1.09E+00 C
1 12 1
9.50E+00 7.40E+01 4.11E+01 2 3.41E+03 3.41E+00 1 4.80E+02 N2 11 12 11 12 1
3.47E-03 2 12 11 11 11 1
2.20E-05 3.00E+01 6.56E-05 8.40E-06 1 3.47E+06 3.47E+03 11 1
0.00E+00 0.00E+00 1 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes78-83-1 VOCs isobutyl alcohol78-59-1 SVOCs isophorone
33820-53-0 Pesticides isopropalin1832-54-8 SVOCs isopropyl methyl phosphonic acid
82558-50-7 Pesticides isoxaben77501-63-4 Pesticides lactofen
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane
330-55-2 Pesticides (Carbamate) linuron7791-03-9 Perchlorates lithium perchlorate
83055-99-6 Pesticides londax121-75-5 Pesticides malathion108-31-6 SVOCs maleic anhydride123-33-1 SVOCs maleic hydrazide109-77-3 VOCs malononitrile
8018-01-7 Pesticides mancozeb12427-38-2 Pesticides maneb
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES
950-10-7 Pesticides mephosfolan24307-26-4 Pesticides mepiquat chloride
7487-94-7 Metal compounds mercuric chloride7439-97-6 Metals mercury
150-50-5 Pesticides merphos57837-19-1 Pesticides metalaxyl
126-98-7 VOCs methacrylonitrile10265-92-6 Pesticides methamidosphos
67-56-1 VOCs methanol950-37-8 Pesticides methidathion
16752-77-5 Pesticides (Carbamate) methomyl99-59-2 SVOCs methoxy-5-nitroaniline;2-72-43-5 Pesticides methoxychlor
110-49-6 VOCs methoxyethanol acetate;2-109-86-4 VOCs methoxyethanol;2-
79-20-9 VOCs methyl acetate96-33-3 VOCs methyl acrylate78-93-3 VOCs methyl ethyl ketone
108-10-1 VOCs methyl isobutyl ketone22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES
80-62-6 VOCs methyl methacrylate90-12-0 PAHs methyl naphthalene;1-91-57-6 PAHs methyl naphthalene;2-
298-00-0 Pesticides methyl parathion25013-15-4 VOCs methyl styrene
98-83-9 VOCs methyl styrene, alpha1634-04-4 VOCs methyl tert-butyl ether
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2-99-55-8 SVOCs methyl-5-nitroaniline;2-
636-21-5 SVOCs methylaniline hydrochloride;2-95-53-4 VOCs methylaniline;2-
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'-101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'-
74-95-3 VOCs methylene bromide75-09-2 VOCs methylene chloride
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI)9016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI)
101-77-9 SVOCs methylenebisbenzenamine;4,4-60-34-4 VOCs methylhydrazine
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1.98E-04 2 11.20E+04 4.38E+00 2.72E-04 1.10E-04 2 4.68E+01 4.68E-02 1 4.61E+01 C
1 11 11 11 1
0.00E+00 0.00E+00 1 1.00E+04 1.00E+04 1 1.50E+01 MCL6.80E+00 1.30E+02 5.74E-04 1.34E-04 1 1.35E+03 1.35E+00 1 2.00E-01 MCL
1 11 11 11 12 11 12 11 11 1
0.00E+00 0.00E+00 10.00E+00 0.00E+00 1 1
1 11 11 1
4.70E-01 1.65E-01 1 5.20E+01 5.20E+01 1 2.00E+00 MCL1 11 1
5.70E-03 2 11 12 11 11 11 1
4.50E-02 1.55E+03 6.48E-04 1.18E-04 1 8.00E+04 8.00E+01 1 4.00E+01 MCL2 12 1
2.88E-03 2 14.30E-03 2 11.31E-03 2 12.92E-03 2 1
1 16.90E-03 2 16.32E-03 2 16.99E-03 2 1
1 12 12 1
5.00E+04 1.80E-02 1.59E-02 2 1.09E+01 1.09E-02 1 2.43E+01 C1 11 11 12 11 11 1
1.96E-02 2 11.30E+04 9.00E-01 8.98E-02 5.67E-02 2 1.00E+01 1.00E-02 1 5.00E+00 MCL
1 11 11 12 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes51218-45-2 Pesticides metolachlor21087-64-9 Pesticides metribuzin
2385-85-5 Pesticides mirex2212-67-1 Pesticides molinate7439-98-7 Metals molybdenum
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS300-76-5 Pesticides naled
91-20-3 PAHs naphthalene15299-99-7 Pesticides napropamide
104-51-8 VOCs n-butylbenzeneE715532 Metals nickel refinery dust
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT12035-72-2 Metal compounds nickel subsulfide14797-55-8 Nutrients nitrate14797-65-0 Nutrients nitrite
88-74-4 SVOCs nitroaniline, 2-100-01-6 SVOCs nitroaniline, 4-
98-95-3 Explosives nitrobenzene67-20-9 SVOCs nitrofurantoin59-87-0 SVOCs nitrofurazone
556-88-7 SVOCs nitroguanidine79-46-9 VOCs nitropropane;2-
1116-54-7 SVOCs nitrosodiethanolamine;N-55-18-5 SVOCs nitrosodiethylamine;N-62-75-9 SVOCs nitrosodimethylamine;N-
924-16-3 VOCs nitroso-di-n-butylamine;N-621-64-7 SVOCs nitroso-di-n-propylamine;N-
86-30-6 SVOCs nitrosodiphenylamine;N-759-73-9 SVOCs nitroso-n-ethylurea;n-
10595-95-6 SVOCs nitroso-N-methylethylamine;N-684-93-5 SVOCs nitroso-n-methylurea,n-930-55-2 SVOCs nitrosopyrrolidine;N-
99-08-1 Explosives nitrotoluene, m-88-72-2 Explosives nitrotoluene, o-99-99-0 Explosives nitrotoluene, p-
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon85509-19-9 Pesticides nustar32536-52-0 PBDEs octabromodiphenyl ether
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine152-16-9 SVOCs octamethylpyrophosphoramide
19044-88-3 Pesticides oryzalin19666-30-9 Pesticides oxadiazon23135-22-0 Pesticides (Carbamate) oxamyl42874-03-3 Pesticides oxyfluorfen76738-62-0 Herbicides paclobutrazol
1910-42-5 Pesticides Paraquat Dichloride56-38-2 Pesticides parathion
1114-71-2 Pesticides pebulate40487-42-1 Pesticides pendimethalin
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5-60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5-32534-81-9 PBDEs pentabromodiphenyl ethers
608-93-5 SVOCs pentachlorobenzene82-68-8 Pesticides pentachloronitrobenzene87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT
14797-73-0 Perchlorates perchlorate and perchlorate salts52645-53-1 Pesticides permethrin
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 11 11 11 1
0.00E+00 0.00E+00 1 11 11 1
3.10E+01 1.05E+01 1.98E-02 8.24E-03 2 1.19E+03 1.19E+00 1 1.60E+02 N1 1
2.42E-01 2 10.00E+00 0.00E+00 1 1
4.70E+01 0.00E+00 0.00E+00 1 6.50E+01 6.50E+01 1 1.00E+02 MCL1 11 11 11 11 1
2.09E+03 2.89E+00 9.84E-04 3.96E-04 2 1.19E+02 1.19E-01 1 1.60E+01 N1 11 11 1
2.60E-03 2 11 12 1
2.60E-02 2 12 1
9.89E+03 1.13E+00 9.23E-05 5.44E-05 1 2.40E+01 2.40E-02 1 1.25E-02 C3.51E+01 1.36E+02 2.05E-04 1.02E-04 1 1.29E+03 1.29E+00 1 1.79E+01 C
1 11 11 12 12 1
1.73E-04 2 12 11 11 11 1
3.20E+00 1 11 11 11 11 11 11 11 11 6.78E+03 6.78E+00 1 7.20E+01 N1 12 11 11 1
8.10E+03 1 11 11 3.21E+04 3.21E+01 1 1.28E+01 N1 1
1.95E+03 1.10E+01 1.00E-06 2.10E-07 1 5.92E+02 5.92E-01 1 1.00E+00 MCL1 11 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 56 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notesunavailable19 General Chemistry pH pH NOTES
13684-63-4 Pesticides phenmedipham108-95-2 Phenols phenol106-50-3 SVOCs phenylenediamine, p-108-45-2 SVOCs phenylenediamine;m-
95-54-5 SVOCs phenylenediamine;o-62-38-4 Metals (organometallic) phenylmercuric acetate90-43-7 Phenols phenylphenol;2-
298-02-2 Pesticides phorate75-44-5 VOCs phosgene
732-11-6 Pesticides phosmet7803-51-2 Gases phosphine7664-38-2 SVOCs phosphoric acid7723-14-0 Nonmetal inorganics phosphorus
100-21-0 Phthalates phthalic acid;p-85-44-9 Phthalates phthalic anhydride
1918-02-1 Herbicides picloram29232-93-7 Pesticides pirimiphos-methyl36355-01-8 PBBs polybrominated biphenyls
1336-36-3 PCBs polychlorinated biphenyls (PCBs)151-50-8 Cyanides potassium cyanide
7778-74-7 Perchlorates potassium perchlorate506-61-6 Cyanides potassium silver cyanide
67747-09-5 Pesticides prochloraz (not in HSDB)26399-36-0 Pesticides profluralin
1610-18-0 Pesticides prometon7287-19-6 Pesticides prometryn
23950-58-5 Pesticides pronamide1918-16-7 Pesticides propachlor
709-98-8 Pesticides propanil2312-35-8 Pesticides propargite
107-19-7 VOCs propargyl alcohol139-40-2 Pesticides propazine122-42-9 Pesticides propham
60207-90-1 Pesticides propiconazole123-38-6 VOCs propionaldehyde
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2-103-65-1 VOCs propylbenzene;n-
57-55-6 Glycols propylene glycol6423-43-4 Glycols propylene glycol dinitrate;1,2-
52125-53-8 Glycols propylene glycol monoethyl ether107-98-2 Glycols propylene glycol monomethyl ether
75-56-9 VOCs propylene oxide81335-77-5 Pesticides pursuit51630-58-1 Pesticides pydrin
129-00-0 PAHs pyrene110-86-1 VOCs pyridine
13593-03-8 Pesticides quinalphos91-22-5 SVOCs quinoline
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdxE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE
10453-86-8 Pesticides resmethrin299-84-3 Pesticides ronnel
83-79-4 Pesticides rotenone78-48-8 Pesticides s,s;s-tributylphosphorotrithioate
78587-05-0 Pesticides savey
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 11 1
8.28E+04 1.40E+00 1.63E-05 6.49E-06 2 2.88E+01 2.88E-02 1 2.40E+03 N1 11 11 11 11 11 12 11 12 12 12 11 11 11 11 11 1
7.00E-01 3.12E+04 1 3.09E+05 3.09E+02 1 4.38E-01 MCL C ADJ1 11 11 11 11 11 11 11 11 11 12 12 11 11 11 12 11 1
2.03E-01 2 12 12 12 12 12 11 11 1
1.35E-01 3.00E+01 4.51E-04 1.08E-04 1 6.80E+04 6.80E+01 1 4.80E+02 N2 11 12 1
0.00E+00 0.00E+00 1 10.00E+00 0.00E+00 1 1
1 11 11 11 11 11 11 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes135-98-8 VOCs sec-butylbenzene
7783-00-8 Metal compounds selenious acid7782-49-2 Metals selenium and compounds
74051-80-2 Pesticides sethoxydim7440-22-4 Metals SILVER HARDNESS - DEPENDENT
506-64-9 Cyanides silver cyanide122-34-9 Pesticides simazine
26628-22-8 Metal compounds sodium azide143-33-9 Cyanides sodium cyanide148-18-5 Metals (organometallic) sodium diethyldithiocarbamate
62-74-8 Metals (organometallic) sodium fluoroacetate13718-26-8 Metal compounds sodium metavanadate
7601-89-0 Perchlorates sodium perchlorate7440-24-6 Metals strontium
57-24-9 SVOCs strychnine100-42-5 VOCs styrene
88671-89-0 Pesticides systhane1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES
34014-18-1 Pesticides tebuthiuron3383-96-8 Pesticides temephos5902-51-2 Pesticides terbacil
13071-79-9 SVOCs terbufos886-50-0 Pesticides terbutryn
98-06-6 VOCs tert-butylbenzene5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4'
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5-630-20-6 VOCs tetrachloroethane;1,1,1,2-
79-34-5 VOCs tetrachloroethane;1,1,2,2-127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,-
961-11-5 Pesticides tetrachlorvinphos3689-24-5 Pesticides tetraethyl dithiopyrophosphate
78-00-2 Metals (organometallic) tetraethyl lead811-97-2 VOCs tetrafluoroethane;1,1,1,2-109-99-9 Furans tetrahydrofuran
1314-32-5 Metal compounds thallic oxide563-68-8 Metal compounds thallium acetate
6533-73-9 Metal compounds thallium carbonate7791-12-0 Metal compounds thallium chloride
10102-45-1 Metal compounds thallium nitrate12039-52-0 Metal compounds thallium selenite
7446-18-6 Metal compounds thallium(I) sulfate7440-28-0 Metals thallium, soluble salts
28249-77-6 Pesticides thiobencarb21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2-39196-18-4 Pesticides thiofanox23564-05-8 Pesticides thiophanate-methyl
137-26-8 Pesticides thiram7440-31-5 Metals tin
118-96-7 Explosives tnt108-88-3 VOCs toluene
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6-584-84-9 VOCs toluene-2,4-diisocyanate
91-08-7 VOCs toluene-2,6-diisocyanate95-70-5 SVOCs toluenediamine;2,5-
106-49-0 SVOCs toluidine;p-8001-35-2 Pesticides toxaphene
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
2.65E-01 2 11 1
4.80E+00 0.00E+00 0.00E+00 1 5.00E+00 5.00E+00 1 5.00E+01 MCL1 1
5.00E-01 0.00E+00 0.00E+00 1 8.30E+00 8.30E+00 1 8.00E+01 N1 11 12 11 11 11 11 11 1
0.00E+00 0.00E+00 1 11 1
3.10E+02 1.13E-01 5.59E-02 2 9.12E+02 9.12E-01 1 1.00E+02 MCL1 1
5.00E+03 1 0.61 11 11 11 11 1
2.58E-01 2 11 11 1
4.59E-02 2 12.97E+03 5.00E+00 1.41E-02 6.96E-03 2 7.90E+01 7.90E-02 1 2.19E-01 C2.00E+02 3.10E+01 7.54E-01 3.98E-01 2 2.65E+02 2.65E-01 1 5.00E+00 MCL
1 2.80E+02 2.80E-01 1 4.80E+02 N1 11 11 12 12 12 11 11 11 11 11 11 11 1
1.16E+02 0.00E+00 0.00E+00 1 7.10E+01 7.10E+01 1 1.60E-01 N1 11 11 11 12 1
0.00E+00 0.00E+00 1 11 1
5.26E+02 1.07E+01 2.72E-01 1.48E-01 2 1.40E+02 1.40E-01 1 6.40E+02 N2 12 12 11 12 1
7.40E-01 1.31E+04 2.46E-04 5.16E-05 1 9.58E+04 9.58E+01 1 7.95E-01 MCL C ADJ
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes93-72-1 Herbicides tp;2,4,5-
unavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin2303-17-5 Pesticides triallate
82097-50-5 Pesticides triasulfuron615-54-3 VOCs tribromobenzene;1,2,4-688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2-76-03-9 SVOCs trichloroacetic acid
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6-634-93-5 SVOCs trichloroaniline;2,4,6-120-82-1 VOCs trichlorobenzene;1,2,4-
71-55-6 VOCs trichloroethane;1,1,1-79-00-5 VOCs trichloroethane;1,1,2-79-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES75-69-4 VOCs trichlorofluoromethane95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5-
598-77-6 VOCs trichloropropane;1,1,2-96-18-4 VOCs trichloropropane;1,2,3-96-19-5 VOCs trichloropropene;1,2,3-
58138-08-2 Pesticides tridiphane121-44-8 VOCs triethylamine
1582-09-8 Pesticides trifluralinunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate526-73-8 VOCs trimethylbenzene;1,2,3-
95-63-6 VOCs trimethylbenzene;1,2,4-108-67-8 VOCs trimethylbenzene;1,3,5-
99-35-4 Explosives trinitrobenzene;1,3,5-479-45-8 Explosives trinitrophenylmethylnitramine
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS7440-62-2 Metals vanadium1314-62-1 Metal compounds vanadium pentoxide1929-77-7 Pesticides vernam
50471-44-8 Pesticides vinclozolin108-05-4 VOCs vinyl acetate
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES81-81-2 Pesticides warfarin
8012-95-1 Petroleum white mineral oil108-38-3 VOCs xylene;m-
95-47-6 VOCs xylene;o-106-42-3 VOCs xylene;p-
1330-20-7 VOCs xylenes7440-66-6 Metals ZINC HARDNESS - DEPENDENT
557-21-1 Cyanides zinc cyanide1314-84-7 Metal compounds zinc phosphide
12122-67-7 Pesticides zineb
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 11 11 11 11 11 11 11 11 11 11 11 11 1
1.25E+01 2 11 11 11 1
3.00E+02 1.14E+02 5.82E-02 2.37E-02 2 1.66E+03 1.66E+00 1 1.51E+01 MCL C ADJ1.33E+03 5.60E+00 7.05E-01 4.19E-01 2 1.35E+02 1.35E-01 1 2.00E+02 MCL4.42E+03 4.50E+00 3.74E-02 1.97E-02 2 7.50E+01 7.50E-02 1 3.00E+00 MCLG1.10E+03 1.10E+01 4.22E-01 2.39E-01 2 9.43E+01 9.43E-02 1 4.00E+00 N
2.67E+00 2 11.20E+03 1.78E-04 6.53E-05 2 1.60E+03 1.60E+00 1 8.00E+02 N8.00E+02 1.50E+02 3.19E-04 1.07E-04 2 3.81E+02 3.81E-01 1 3.98E+00 C
1 12 1
7.94E-03 2 12 11 12 11 12 12 12 1
1.15E-01 2 11.10E-01 2 1
1 12 1
0.00E+00 0.00E+00 1 10.00E+00 0.00E+00 1 1.00E+03 1.00E+03 1 8.00E+01 N
1 12 11 1
2.00E+04 2.10E-02 1.17E-02 2 5.25E+00 5.25E-03 1 8.00E+03 N2.76E+03 1.17E+00 1.11E+00 8.07E-01 2 1.86E+01 1.86E-02 1 2.92E-01 MCL C ADJ
2 11 1
1.61E+02 3.01E-01 1.51E-01 2 1.96E+02 1.96E-01 1 1.60E+03 N1.78E+02 2.13E-01 1.06E-01 2 2.41E+02 2.41E-01 1 1.60E+03 N1.85E+02 3.14E-01 1.58E-01 2 3.11E+02 3.11E-01 1 1.60E+03 N1.71E+02 2.79E-01 1.38E-01 2 2.33E+02 2.33E-01 1 1.60E+03 N
4.70E+01 0.00E+00 0.00E+00 1 6.20E+01 6.20E+01 1 4.80E+03 N1 11 11 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes83-32-9 PAHs acenaphthene
30560-19-1 Pesticides acephate75-07-0 VOCs acetaldehyde
34256-82-1 Pesticides acetochlor67-64-1 VOCs acetone75-86-5 VOCs acetone cyanohydrin75-05-8 VOCs acetonitrile98-86-2 SVOCs acetophenone
62476-59-9 Herbicides acifluorfen, sodium107-02-8 VOCs acrolein
79-06-1 VOCs acrylamide79-10-7 VOCs acrylic acid
107-13-1 VOCs acrylonitrile15972-60-8 Pesticides alachlor
1596-84-5 Pesticides alar116-06-3 Pesticides (Carbamate) aldicarb
1646-88-4 Pesticides (Carbamate) aldicarb sulfone309-00-2 Pesticides aldrin
74223-64-6 Pesticides ally107-18-6 VOCs allyl alcohol107-05-1 VOCs allyl chloride
7429-90-5 Metals aluminum20859-73-8 Metal compounds aluminum phosphide67485-29-4 Pesticides amdro
834-12-8 Pesticides ametryn591-27-5 Phenols aminophenol;m-
33089-61-1 Pesticides amitraz7664-41-7 Nutrients AMMONIA AMMONIA NOTES7790-98-9 Perchlorates ammonium perchlorate7773-06-0 Pesticides ammonium sulfamate
62-53-3 SVOCs aniline120-12-7 PAHs anthracene
7440-36-0 Metals antimony1314-60-9 Metal compounds antimony pentoxide
28300-74-5 Metal compounds antimony potassium tartrate1332-81-6 Metal compounds antimony tetroxide1309-64-4 Metal compounds antimony trioxide
74115-24-5 Pesticides apollo140-57-8 SVOCs aramite
12674-11-2 PCBs aroclor 101611097-69-1 PCBs aroclor 125411096-82-5 PCBs aroclor 1260
7440-38-2 Metals arsenic, inorganic7784-42-1 Gases arsine1332-21-4 Fibers ASBESTOS ASBESTOS NOTE
76578-14-8 Pesticides assure3337-71-1 Pesticides asulam1912-24-9 Pesticides atrazine
65195-55-3 Pesticides avermectin B1103-33-3 Pesticides azobenzene
7440-39-3 Metals barium and compounds114-26-1 Pesticides baygon
43121-43-3 Pesticides bayleton68359-37-5 Pesticides baythroid
1861-40-1 Pesticides benefin17804-35-2 Pesticides benomyl25057-89-0 Herbicides bentazon
100-52-7 SVOCs benzaldehyde
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Database
Acephate, Orthene, Phosphoramidothioic acid, acetyl-, O,S-dAcetaldehyde, Ethanal
Acetone, 2-Propanone, Methyl ketoneAcetone cyanohydrin, 2-Methyllactonitrile, Propanenitrile, 2-hydroxy-2-methyl-
Ethanone, 1-Phenyl-, AcetophenoneAcifluorfen, sodium salt, BlazerAcrolein, 2-PropenalAcrylamide, 2-PropenamideAcrylic Acid, 2-Propenoic acid, Vinyl formic acidAcrylonitrile, 2-Propenenitrile
Daminozide, Alar
Metsulfuron-methyl, AllyAllyl alcohol, 2-Propen-1-olAllyl Chloride, 1-Propene, 3-chloro-, 3-Chloropropene
Hydramethylnon, Amdro
3-Aminophenol, Aminophenol, m-Amitraz, BAAM
Ammonium perchlorate, Perchloric acid, ammonium saltAmmonium sulfamate, Sulfamic acid, monoammonium saltAniline, Benzenamine
Antimony oxide (Sb2O5), Antimony PentoxideAntimony potassium tartrate, Antimonate(2-), bis[.mu.-[2,3-di(hydroxy-. kappa.O)butanedioato(4-)-. kappa.O1:.kappa.O4]]di-, dipotassium, trihydrate, stereoisomerAntimony oxide (Sb2O4), Antimony tetroxideAntimony trioxide, Antimony oxide (Sb2O3)Clofentezine, ApolloSulfurous acid, 2-chloroethyl 2-[4-(1,1-dimethylethyl)phenoxy]-1-methylethyl esterPCB-aroclor 1016, Aroclor 1016, PCB-1016, PCB-aroclor-1016PCB-aroclor 1254, Aroclor 1254, PCB-1254, PCB-aroclor-1254PCB-aroclor 1260, Aroclor 1260, PCB-1260, PCB-aroclor-1260
Asbestos, Asbestos, (fibrous)Quizalofop-ethyl, AssureAsulam, Carbamic acid, [(4-aminophenyl)sulfonyl]-, methyl ester
Avermectin B1a, Avermectin A1a, 5-O-demethyl-Azobenzene, Diazene, diphenyl-
Propoxur, Baygon, Phenol, 2-(1-methylethoxy)-,methylcarbamateTriadimefonCyfluthrin, BaythroidBenfluralin, Benefin, Benetin, Benzenamine, N-butyl-N-ethyl-2,6-dinitro-4-(trifluoromethyl)-
Bentazon, 1H-2,1,3-Benzothiadiazin-4(3H)-one, 3-(1-methylethyl)-, 2,2-dioxide, Bentazone
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes71-43-2 VOCs BENZENE
108-98-5 SVOCs benzenethiol92-87-5 SVOCs benzidine56-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT98-07-7 VOCs benzotrichloride
100-51-6 SVOCs benzyl alcohol100-44-7 VOCs benzyl chloride
7440-41-7 Metals beryllium91-58-7 PAHs beta-chloronaphthalene
141-66-2 Pesticides bidrin82657-04-3 Pesticides biphenthrin
92-52-4 PAHs biphenyl;1,1-108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether111-44-4 SVOCs bis(2-chloroethyl)ether117-81-7 Phthalates bis(2-ethylhexyl) phthalate542-88-1 VOCs bis(chloromethyl)ether
80-05-7 Phenols bisphenol a7440-42-8 Metals boron
15541-45-4 Pesticides bromate79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene75-27-4 VOCs bromodichloromethane TTHM NOTES
593-60-2 VOCs bromoethene75-25-2 VOCs bromoform TTHM NOTES74-83-9 VOCs bromomethane
2104-96-3 Pesticides bromophos1689-84-5 Pesticides bromoxynil1689-99-2 Pesticides bromoxynil octanoate
106-99-0 VOCs butadiene;1,3-71-36-3 VOCs butanol;n-85-68-7 Phthalates butyl benzyl phthalate
2008-41-5 Pesticides butylate85-70-1 Phthalates butylphthalyl butylglycolate94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)-75-60-5 Pesticides cacodylic acid
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES
592-01-8 Cyanides calcium cyanide105-60-2 SVOCs caprolactam
2425-06-1 Pesticides captafol133-06-2 Pesticides captan
63-25-2 Pesticides (Carbamate) carbaryl1563-66-2 Pesticides (Carbamate) carbofuran
75-15-0 VOCs carbon disulfide56-23-5 VOCs carbon tetrachloride
55285-14-8 Pesticides carbosulfan5234-68-4 Pesticides carboxin1306-38-3 Metals cerium oxide and cerium compounds
302-17-0 VOCs chloral hydrate133-90-4 Herbicides chloramben118-75-2 Pesticides chloranil
12789-03-6 Pesticides chlordane143-50-0 Pesticides chlordecone (kepone)
16887-00-6 Nutrients chloride
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Database
Thiophenol, Benzenethiol
Benz[a]anthracene, 1,2-Benzanthracene, Benzo(a)anthracene, Benzo[a]anthraceneBenzo(a)pyrene, Benzo[a]pyreneBenzo(b)fluoranthene, Benz(e)acephenanthrylene, Benzo[b]fluorantheneBenzo(k)fluoranthene, Benzo[k]fluoranthene
Benzotrichloride, Benzene, (trichloromethyl)-
Benzyl chloride, Toluene, .alpha.-chloro-, Toluene, alpha-chloro-
PCN-002, 2-ChloronaphthaleneDicrotophos, Bidrin, Phosphoric acid, 3-(dimethylamino)-1-me*Bifenthrin, Biphenthrin1,1'-Biphenyl, Biphenyl, DiphenylBis(2-chloro-1-methylethyl) ether, Propane, 2,2'-oxybis[1-chloro-
Di(2-ethylhexyl) phthalate, 1,2-Benzenedicarboxylic acid, 1,2-bis(2-ethylhexyl) ester, BEHP, Bis (2-ethylhexyl) phthalate, Bis(2-ethylhexyl) phthalate, Bis(2-ethylhexyl)phthalate, DEHP
Bisphenol A, 4,4'-Isopropylidenediphenol, Phenol, 4,4'-(1-methylethylidene)bis-
Dichlorobromomethane, Bromodichloromethane, Methane, bromodichloro-Vinyl bromide, Ethene, bromo-Bromoform, Methane, tribromo-, TribromomethaneBromomethane, Methyl bromide
BrominalBromoxynil octanoate, Octanoic acid, 2,6-dibromo-4-cyanophenyl ester
1-Butanol, n-Butanol, n-Butyl alcoholButyl benzyl phthalate, 1,2-Benzenedicarboxylic acid, 1-butyl 2-(phenylmethyl) ester, Butylbenzyl phthalate, Phthalic acid, benzyl butyl ester
2-Butoxy-2-oxoethyl butyl phthalate, Butylphthalyl butylglycolateMCPBCacodylic acid, Arsinic acid, dimethyl-, Dimethylarsenic acid, Dimethylarsinic acid, DMAA, Hydroxydimethylarsine oxide, Silvisar 510
Captafol, 1H-Isoindole-1,3(2H)-dione, 3a,4,7,7a-tetrahydro-2-[(1,1,2,2-tetrachloroethyl)thio]-, Difolatan
Carbaryl, 1-Naphthalenol, methylcarbamate, SevinFuraden
Cerium oxide (CeO2), Cerium Oxide and Cerium CompoundsChloral Hydrate, 1,1-Ethanediol, 2,2,2-trichloro-
Chloranil, 2,5-Cyclohexadiene-1,4-dione, 2,3,5,6-tetrachloro-Chlordane, technical, Chlordane, Chlordane technical mixture
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes90982-32-4 Pesticides chlorimuron-ethyl
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS506-77-4 Cyanides chlorine cyanide
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS7758-19-2 Nutrients chlorite
75-68-3 VOCs chloro-1,1-difluoroethane;1-126-99-8 VOCs chloro-1,3-butadiene;2-
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4-95-69-2 SVOCs chloro-2-methylaniline;4-79-11-8 SVOCs chloroacetic acid
532-27-4 SVOCs chloroacetophenone;2-106-47-8 SVOCs chloroaniline;p-108-90-7 VOCs chlorobenzene510-15-6 Pesticides chlorobenzilate
74-11-3 Pesticides chlorobenzoic acid;p-98-56-6 VOCs chlorobenzotrifluoride;4-
109-69-3 VOCs chlorobutane;1-59-50-7 Phenols chlorocresol75-45-6 VOCs chlorodifluoromethane67-66-3 VOCs chloroform TTHM NOTES74-87-3 VOCs chloromethane
107-30-2 VOCs chloromethyl methyl ether88-73-3 Pesticides chloronitrobenzene;o-
100-00-5 Pesticides chloronitrobenzene;p-95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT
1897-45-6 Pesticides chlorothalonil95-49-8 VOCs chlorotoluene;o-
101-21-3 Pesticides chlorpropham2921-88-2 Pesticides chlorpyrifos5598-13-0 Pesticides chlorpyrifos-methyl
64902-72-3 Pesticides chlorsulfuron60238-56-4 Pesticides chlorthiophos
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt
E649830 VOCs coke oven emissions7440-50-8 Metals COPPER HARDNESS - DEPENDENT
544-92-3 Cyanides copper cyanide108-39-4 Phenols cresol;m-
95-48-7 Phenols cresol;o-106-44-5 Phenols cresol;p-123-73-9 VOCs crotonaldehyde
98-82-8 VOCs cumene21725-46-2 Pesticides cyanazine
57-12-5 Cyanides CYANIDE CYANIDE NOTES460-19-5 Cyanides cyanogen506-68-3 Cyanides cyanogen bromide110-82-7 VOCs cyclohexane108-94-1 VOCs cyclohexanone108-91-8 VOCs cyclohexylamine
68085-85-8 Pesticides cyhalothrin/karate52315-07-8 Pesticides cypermethrin66215-27-8 Pesticides cyromazine
1861-32-1 Herbicides dacthal75-99-0 Herbicides dalapon, sodium salt
39515-41-8 Pesticides danitol
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Database
Cyanogen ChlorideChlorine dioxide, Chlorine oxide (ClO2)Sodium chlorite, Chlorous acid, sodium salt, TextoneHCFC-142b, Ethane, 1-Chloro-1,1-Difluoro-, Freon 142Chloroprene, 1,3-Butadiene, 2-chloro-4-Chloro-o-toluidine hydrochloride, Benzenamine, 4-chloro-2-methyl-, hydrochloride, chloro-2-methylaniline hydrochloride;4-4-Chloro-2-methylaniline, Benzenamine, 4-chloro-2-methyl-
Ethanone, 2-chloro-1-phenyl-, 2-Chloroacetophenone4-Chloroaniline, Benzenamine, 4-chloro-, p-Chloroaniline, para-Chloroaniline
p-Chlorobenzoic acid, Benzoic acid, 4-chloro-p-Chlorobenzotrifluoride, Benzene, 1-chloro-4-(trifluoromethyl)-
4-Chloro-3-Methylphenol, p-Chloro-m-cresolMethane, Chlorodifluoro-, Freon 22, HCFC-22Chloroform, Methane, trichloro-, Methyl trichlorideMethyl chlorideChloromethyl methyl ether, Methane, chloromethoxy-o-Chloronitrobenzene, Benzene, 1-chloro-2-nitro-p-Chloronitrobenzene, Benzene, 1-chloro-4-nitro-
Daconil2-Chlorotoluene, o-Chlorotoluene
Chlorpyrifos, Chlorpyriphos, Dursban, Phosphorothioic acid, O,O-diethyl O-(3,*Chlorpyrifos-methyl, Methyl Chlorpyrifos, Phosphorothioic acid, O,O-dimethyl O-(3,5,6-trichloro-2-pyridinyl) ester
Chlorthiophos, Chlorthiophos (mixture of isomers), Phosphorothioic acid, O-[dichloro(methylthio)phenyl] O,O-diethyl esterChromium, Chromium, TotalChromium, Trivalent, Chromium III, Chromium, ion (Cr3+)Chromium, Hexavalent, Chromium (VI), Chromium VI, Chromium, ion (Cr 6+)
Copper cyanide, Copper(I) cyanidem-Cresol, 1-Hydroxy-3-methylbenzene, 3-Methylphenol, meta-Cresol, Phenol, 3-methyl-o-Cresol, 2-Methylphenol, o-Hydroxytoluene, ortho-Cresol, Phenol, 2-methyl-p-Cresol, 4-Hydroxytoluene, 4-Methylphenol, para-Cresol, Phenol, 4-methyl-Crotonaldehyde, 2-ButenalCumene, Benzene, (1-methylethyl)-, Isopropylbenzene, Isopropylbenzene (Cumene)
Cyanide, Cyanide, TotalCyanogen, Ethanedinitrile
Cyromazine, 1,3,5-Triazine-2,4,6-triamine, N-cyclopropyl-Chlorthal-dimethyl, 1,4-Benzenedicarboxylic acid,2,3,5,6-tetrachloro-,dimethyl ester, Dacthal, DCPA, Dimethyl tetrachloroterephthalateDalapon, Dalapon (DPA), Propanoic acid, 2,2-dichloro-Fenpropathrin, Danitol
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes94-82-6 Pesticides db;2,4-72-54-8 Pesticides ddd72-55-9 Pesticides dde50-29-3 Pesticides ddt
1163-19-5 PBDEs decabromodiphenyl ether8065-48-3 Pesticides demeton
103-23-1 Phthalates di(2-ethylhexyl)adipate2303-16-4 Pesticides diallate
333-41-5 Pesticides diazinon53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran96-12-8 Pesticides dibromo-3-chloropropane;1,2-
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4-124-48-1 VOCs dibromochloromethane TTHM NOTES
84-74-2 Phthalates di-butyl phthalate1918-00-9 Herbicides dicamba3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4-79-43-6 SVOCs dichloroacetic acid95-50-1 VOCs dichlorobenzene;1,2-
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4-
91-94-1 SVOCs dichlorobenzidine;3,3'-75-71-8 VOCs dichlorodifluoromethane75-34-3 VOCs dichloroethane;1,1-
107-06-2 VOCs dichloroethane;1,2-540-59-0 VOCs dichloroethylene,1,2- (mixed isomers)
75-35-4 VOCs dichloroethylene;1,1-156-59-2 VOCs dichloroethylene;1,2-,cis156-60-5 VOCs dichloroethylene;1,2-,trans120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4-78-87-5 VOCs dichloropropane;1,2-
616-23-9 SVOCs dichloropropanol;2,3-542-75-6 VOCs dichloropropene;1,3-
62-73-7 Pesticides dichlorvos77-73-6 VOCs dicyclopentadiene60-57-1 Pesticides dieldrin84-66-2 Phthalates diethyl phthalate
112-34-5 Glycols diethylene glycol monobutyl ether111-90-0 Glycols diethylene glycol monoethyl ether617-84-5 SVOCs diethylformamide
56-53-1 SVOCs diethylstilbesterol43222-48-6 Pesticides difenzoquat35367-38-5 Pesticides diflubenzuron
75-37-6 VOCs difluoroethane;1,1-1445-75-6 VOCs diisopropyl methylphosphonate
55290-64-7 Pesticides dimethipin60-51-5 Pesticides dimethoate
119-90-4 SVOCs dimethoxybenzidine;3,3'-131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4-95-68-1 SVOCs dimethylaniline;2,4-
121-69-7 VOCs dimethylaniline;N,N-119-93-7 SVOCs dimethylbenzidine;3,3'-
68-12-2 VOCs dimethylformamide;N,N-
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Database2,4-DB, Butanoic acid, 4-(2,4-dichlorophenoxy)-, Butoxone, 2,4-DB acid4,4'-DDD, p,p'-DDD4,4'-DDE, p,p'-DDE4,4'-DDT, Benzene, 1,1'-(2,2,2-trichloroethyliden*, p,p'-DDTPBDE-209, 2,2',3,3',4,4',5,5',6,6'-Decabromodiphenyl ether, BDE-209, Benzene, 1,1'-oxybis[2,3,4,5,6-pentabromo-, DBDPE, Decabromobiphenyl ether, Decabromodiphenyl ether (BDE-209), Decabromodiphenyl oxide
Di(2-ethylhexyl) adipate, Hexanedioic Acid, Bis(2-Ethylhexyl) EsterDiallate (cis or trans)
Dibenzo(a,h)anthracene, Dibenz[a,h]anthracene
1,2-Dibromo-3-Chloropropane, DBCP, Propane, 1,2-dibromo-3-chloro-
p-Dibromobenzene, 1,4-DiBB, 1,4-Dibromobenzene, Benzene, 1,4-dibromo-Chlorodibromomethane, Dibromochloromethane, Methane, dibromochloro-Dibutyl phthalate, 1,2-Benzenedicarboxylic acid, 1,2-dibutyl ester, Di-n-butyl phthalate, Di-n-butylphthalateDicamba, Banvel, Benzoic acid, 3,6-dichloro-2-methoxy-
1,2-Dichlorobenzene, o-Dichlorobenzene1,3-Dichlorobenzene, m-Dichlorobenzene1,4-Dichlorobenzene, p-Dichlorobenzene
CFC-12, Dichlorodifluoromethane, Freon 12, Methane, dichlorodifluoro-
1,2-Dichloroethane, 1,2-DCA, Dichloroethane, EDC, Ethane, 1,2-dichloro-1,2-Dichloroethene, 1,2-Dichloroethene, cis-, trans-, 1,2-Dichloroethylene, 1,2-Dichloroethylene, (mixed isomers)1,1-Dichloroethene, 1,1-Dichloroethylene, Vinylidene chlorideCis-1,2-Dichloroethene, cis-1,2-Dichloroethylene, Ethene, 1,2-dichloro-, (1Z)-Trans-1,2-Dichloroethene, Ethene, 1,2-dichloro-, (1E)-, trans-1,2-Dichloroethylene
2,4-D, 2,4-D Acid, Acetic acid, (2,4-dichlorophenoxy)-
2,3-Dichloropropanol, 1-Propanol, 2,3-dichloro-1,3-Dichloropropene, 1-Propene, 1,3-dichloro-DDVP, DichlorvosDicyclopentadiene, 4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-Dieldrin, 2,7:3,6-Dimethanonaphth(2,3-b)oxirene, 3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-, (1a.alpha.,2.beta.,2a.alpha.,3.beta.,6.beta.,6a.alpha.,7.beta.,7a.alpha.)-Diethyl phthalate, 1,2-Benzenedicarboxylic acid, 1,2-diethyl ester, Diethylphthalate
Diethylformamide, Formamide, N,N-diethyl-Diethylstilbestrol, DESDifenzoquat methyl sulfate, 1H-Pyrazolium, 1,2-dimethyl-3,5-diphenyl-, methyl sulfate, DifenzoquatDiflubenzuron, Benzamide, N-[[(4-chlorophenyl)amino]carbonyl]-2,6-difluoro-HFC-152a, Ethane, 1,1-difluoro-Diisopropyl methylphosphonate, Phosphonic acid, methyl-, bis(1-methylethyl) esterDimethipin, 1,4-Dithiin, 2,3-dihydro-5,6-dimethyl-, 1,1,4,4-tetraoxide
Dimethyl phthalate, 1,2-Benzenedicarboxylic acid, dimethyl ester, Dimethylphthalate, Phthalic acid, dimethyl esterDimethyl terephthalate, 1,4-Benzenedicarboxylic acid, dimethyl ester2,4-Dimethylaniline hydrochloride, 2,4-Xylidine.HCl
3,3'-Dimethylbenzidine, [1,1'-Biphenyl]-4,4'-diamine, 3,3'-dimethyl-, Benzidine, 3,3-Dimethyl-, o-TolidineN,N-Dimethylformamide, Formamide, N,N-dimethyl-
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes57-14-7 VOCs dimethylhydrazine;1,1-
540-73-8 VOCs dimethylhydrazine;1,2-105-67-9 Phenols dimethylphenol;2,4-576-26-1 Phenols dimethylphenol;2,6-
95-65-8 Phenols dimethylphenol;3,4-99-65-0 Explosives dinitrobenzene;m-
528-29-0 SVOCs dinitrobenzene;o-100-25-4 SVOCs dinitrobenzene;p-131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6-
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6-121-14-2 Explosives dinitrotoluene;2,4-606-20-2 Explosives dinitrotoluene;2,6-117-84-0 Phthalates di-n-octyl phthalate
88-85-7 Herbicides dinoseb123-91-1 VOCs dioxane;1,4-957-51-7 Pesticides diphenamid122-39-4 Pesticides diphenylamine122-66-7 SVOCs diphenylhydrazine;1,2-
85-00-7 Pesticides diquat1937-37-7 Dyes direct black 382602-46-2 Dyes direct blue 6
16071-86-6 Dyes direct brown 95298-04-4 Pesticides disulfoton505-29-3 SVOCs dithiane;1,4-330-54-1 Pesticides (Carbamate) diuron534-52-1 Phenols DNOC
2439-10-3 Pesticides dodine115-29-7 Pesticides endosulfan
1031-07-8 Pesticides endosulfan sulfate959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall
72-20-8 Pesticides endrin7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin106-88-7 VOCs epoxybutane
16672-87-0 Pesticides ethephon563-12-2 Pesticides ethion111-15-9 VOCs ethoxyethanol acetate;2-110-80-5 VOCs ethoxyethanol;2-141-78-6 VOCs ethyl acetate140-88-5 VOCs ethyl acrylate
75-00-3 VOCs ethyl chloride759-94-4 Pesticides ethyl dipropylthiocarbamate;S-
60-29-7 VOCs ethyl ether97-63-2 VOCs ethyl methacrylate
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate100-41-4 VOCs ethylbenzene109-78-4 SVOCs ethylene cyanohydrin107-15-3 VOCs ethylene diamine106-93-4 VOCs ethylene dibromide (EDB)107-21-1 VOCs ethylene glycol111-76-2 Glycols ethylene glycol monobutyl ether (EGBE)
75-21-8 VOCs ethylene oxide96-45-7 SVOCs ethylene thiourea84-72-0 Phthalates ethylphthalyl ethylglycolate
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Database1,1-Dimethylhydrazine, Dimethylhydrazine;1,1-1,2-Dimethylhydrazine, Dimethylhydrazine;1,2-
1,3-Dinitrobenzene, m-Dinitrobenzene, 1,3-DNBo-Dinitrobenzene, 1,2-Dinitrobenzene, Benzene, 1,2-dinitro-1,4-DinitrobenzeneDinex, Dinitro-o-cyclohexyl phenol;4,6-, Phenol, 2-cyclohexyl-4,6-dinitrophenol
2,4-DNT2,6-DNTDi-n-octyl phthalate, 1,2-Benzenedicarboxylic acid, 1,2-dioctyl ester, Di-n-octylphthalate, DnOP, Phthalic acid, dioctyl esterDNBP1,4-Dioxane, 1,4-Diethyleneoxide, Dioxane, 1,4-
Diphenylamine, Benzenamine, N-phenyl-
Diquat Dibromide, DiquatC.I. Direct Black 38, Direct Black 38C.I. Direct Blue 6, Direct Blue 6C.I. Direct Brown 95, Direct Brown 95
1,4-Dithiane, Dithiane;1,4-Diuron, DCMU, Urea, N'-(3,4-dichlorophenyl)-N,N-dimethyl-4,6-Dinitro-2-Methylphenol, 4,6-Dinitro-o-cresol, Dinitrocresol, Elgetol 30, Phenol, 2-methyl-4,6-dinitro-, SinoxDodine, Guanidine, dodecyl-, monoacetate
.alpha.-Endosulfan, Endosulfan I
.beta.-Endosulfan, Endosulfan IIEndothall, 7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid
Epichlorohydrin, Oxirane, 2-(chloromethyl)1,2-Epoxybutane, 1,2-Butylene oxideEthephon, Phosphonic acid, (2-chloroethyl)-
Ethylene glycol monoethyl ether acetate, Ethanol, 2-ethoxy-, acetate2-Ethoxyethanol, Ethylene glycol monoethyl ether
Ethyl acrylate, 2-Propenoic acid, ethyl esterChloroethaneEPTC, EptamDiethyl ether
EPN
Ethylene cyanohydrin, Propanenitrile, 3-hydroxy-Ethylenediamine, 1,2-Ethanediamine, Ethylene diamineEthylene dibromide, 1,2-Dibromoethane, EDB, Ethane, 1,2-dibromo-Ethylene Glycol, 1,2-EthanediolEthylene glycol monobutyl ether, Ethanol, 2-butoxy-Ethylene oxide, Oxirane
Ethoxycarbonylmethyl ethyl phthalate, 1,2-Benzenedicarboxylic acid, 2-ethoxy-2-oxoethyl-, ethyl ester, Ethylphthalyl ethylglycolate
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes101200-48-0 Pesticides express
22224-92-6 Pesticides fenamiphos2164-17-2 Pesticides fluometuron
206-44-0 PAHs fluoranthene86-73-7 PAHs fluorene
16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES59756-60-4 Pesticides fluridone56425-91-3 Pesticides flurprimidol66332-96-5 Pesticides flutolanil69409-94-5 Pesticides fluvalinate
133-07-3 Pesticides folpet72178-02-0 Pesticides fomesafen
944-22-9 Pesticides fonofos50-00-0 VOCs formaldehyde64-18-6 VOCs formic acid
39148-24-8 Pesticides fosetyl-al110-00-9 Furans furan
67-45-8 SVOCs furazolidone98-01-1 VOCs furfural
531-82-8 SVOCs furium60568-05-0 Pesticides furmecyclox77182-82-2 Pesticides glufosinate-ammonium
765-34-4 VOCs glycidaldehyde1071-83-6 SVOCs glyphosate
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion69806-40-2 Pesticides haloxyfop-methyl79277-27-3 Pesticides harmony
76-44-8 Pesticides heptachlor1024-57-3 Pesticides heptachlor epoxide
142-82-5 VOCs heptane;n-87-82-1 SVOCs hexabromobenzene
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'-118-74-1 Pesticides hexachlorobenzene
87-68-3 VOCs hexachlorobutadiene319-84-6 Pesticides hexachlorocyclohexane;alpha319-85-7 Pesticides hexachlorocyclohexane;beta-608-73-1 SVOCs hexachlorocyclohexane;technical
77-47-4 Pesticides hexachlorocyclopentadiene34465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture
67-72-1 VOCs hexachloroethane70-30-4 SVOCs hexachlorophene
822-06-0 VOCs hexamethylene diisocyanate;1,6-110-54-3 VOCs hexane;n-591-78-6 VOCs hexanone;2-
51235-04-2 Pesticides hexazinone302-01-2 VOCs hydrazine
10034-93-2 SVOCs hydrazine sulfate7647-01-0 VOCs hydrogen chloride
74-90-8 Cyanides hydrogen cyanide7783-06-4 VOCs hydrogen sulfide
123-31-9 SVOCs hydroquinone35554-44-0 Pesticides imazalil81335-37-7 Pesticides imazaquin
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione
7439-89-6 Metals iron
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) DatabaseTribenuron-methyl, Express
Fluoranthene, Benzo[j,k]fluorene
Flurprimidol, 5-Pyrimidinemethanol, .alpha.-(1-methylethyl)-.alpha.-[ 4-(trifluoromethoxy)phenyl]-Flutolanil, Benzamide, N-[3-(1-methylethoxy)phenyl]-2-(trifluoromethyl)-Fluvalinate, Valine, N-[2-chloro-4-(trifluoromethyl) phenyl]-, cyano(3-phenoxyphenyl)methyl esterFolpet, 1H-Isoindole-1,3(2H)-dione, 2-[(trichloromethyl)thio]-Fomesafen, Benzamide, 5-[2-chloro-4-(trifluoromethyl) phenoxy]-N-(methylsulfonyl)- 2-nitro-
Formaldehyde, Methanal, Methyl aldehyde
Fosetyl-Al, Phosphonic acid, monoethyl ester, aluminum salt
Furazolidone, 2-Oxazolidinone, 3-[[(5-nitro-2-furanyl)methylene] amino]-Furfural, 2-FurancarboxaldehydeFurothiazole, Acetamide, N-[4-(5-nitro-2-furanyl)-2- thiazolyl]-, FuriumFurmecyclox, 3-Furancarboxamide, N-cyclohexyl-N-methoxy-2,5- dimethyl-Glufosinate-ammonium, Butanoic acid, 2-amino-4-(hydroxymethylphosphinyl)-, monoammonium saltGlycidylaldehyde, Oxiranecarboxaldehyde, glycidylGlyphosate, Glycine, N-(phosphonomethyl)-
Azinphos-methyl, Guthion, Phosphorodithioic acid, O,O-dimethyl S-[(4-oxo-1,2,3-benzotriazin-3(4H)-yl)methyl] esterHaloxyfop-methyl, Propanoic acid, 2-[4-[[3-chloro-5-(trifluoromethyl)- 2-pyridinyl]oxy]phenoxy]-, methyl esterThifensulfuron-methyl, Harmony
PBDE-153, 2,2',4,4',5,5'-Hexabromodiphenyl ether, Benzene, 1,1'-oxybis[2,4,5-tribromo-Hexachlorobenzene, Benzene, 1,2,3,4,5,6-hexachloro-Hexachlorobutadiene, 1,3-Butadiene, 1,1,2,3,4,4-hexachloro-, Hexachloro-1,3-butadienealpha-BHC, .alpha.-Benzene hexachloride, .alpha.-BHC, alpha-Hexachlorocyclohexane, Cyclohexane, 1,2,3,4,5,6-hexachloro-, (1.alpha.,2.alpha.,3.beta.,4.alpha.,5.beta.,6.beta.)-beta-BHC, .beta.-Benzene hexachloride, .beta.-BHC, beta-Hexachlorocyclohexane, Cyclohexane, 1,2,3,4,5,6-hexachloro-, (1.alpha.,2.beta.,3.alpha.,4.beta.,5.alpha.,6.beta.)-
1,2,3,7,8,9-HxCDD, 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin
Hexamethylene-1,6-diisocyanate, Hexane, 1,6-diisocyanato-Hexane, n-Hexane
Hydrazine sulfate, Hydrazine sulfate (1:1)Hydrochloric acid, Hydrogen chlorideHydrogen cyanide, Hydrocyanic acid
Hydroquinone, 1,4-BenzenediolImazalil, 1H-Imidazole, 1-[2-(2,4-dichlorophenyl)- 2-(2-propenyloxy)ethyl]-Imazaquin, 3-Quinolinecarboxylic acid, 2-[4,5-dihydro-4-methyl-4-( 1-methylethyl)-5-oxo-1H-imidazol- 2-yl]-Indeno(1,2,3-cd)pyrene, Indeno(1,2,3-c,d)pyrene, Indeno[1,2,3-cd]pyreneIprodione, 1-Imidazolidinecarboxamide, 3-(3,5-dichlorophenyl)-N-(1-methylethyl)-2,4-dioxo-Iron, Iron, total
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes78-83-1 VOCs isobutyl alcohol78-59-1 SVOCs isophorone
33820-53-0 Pesticides isopropalin1832-54-8 SVOCs isopropyl methyl phosphonic acid
82558-50-7 Pesticides isoxaben77501-63-4 Pesticides lactofen
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane
330-55-2 Pesticides (Carbamate) linuron7791-03-9 Perchlorates lithium perchlorate
83055-99-6 Pesticides londax121-75-5 Pesticides malathion108-31-6 SVOCs maleic anhydride123-33-1 SVOCs maleic hydrazide109-77-3 VOCs malononitrile
8018-01-7 Pesticides mancozeb12427-38-2 Pesticides maneb
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES
950-10-7 Pesticides mephosfolan24307-26-4 Pesticides mepiquat chloride
7487-94-7 Metal compounds mercuric chloride7439-97-6 Metals mercury
150-50-5 Pesticides merphos57837-19-1 Pesticides metalaxyl
126-98-7 VOCs methacrylonitrile10265-92-6 Pesticides methamidosphos
67-56-1 VOCs methanol950-37-8 Pesticides methidathion
16752-77-5 Pesticides (Carbamate) methomyl99-59-2 SVOCs methoxy-5-nitroaniline;2-72-43-5 Pesticides methoxychlor
110-49-6 VOCs methoxyethanol acetate;2-109-86-4 VOCs methoxyethanol;2-
79-20-9 VOCs methyl acetate96-33-3 VOCs methyl acrylate78-93-3 VOCs methyl ethyl ketone
108-10-1 VOCs methyl isobutyl ketone22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES
80-62-6 VOCs methyl methacrylate90-12-0 PAHs methyl naphthalene;1-91-57-6 PAHs methyl naphthalene;2-
298-00-0 Pesticides methyl parathion25013-15-4 VOCs methyl styrene
98-83-9 VOCs methyl styrene, alpha1634-04-4 VOCs methyl tert-butyl ether
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2-99-55-8 SVOCs methyl-5-nitroaniline;2-
636-21-5 SVOCs methylaniline hydrochloride;2-95-53-4 VOCs methylaniline;2-
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'-101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'-
74-95-3 VOCs methylene bromide75-09-2 VOCs methylene chloride
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI)9016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI)
101-77-9 SVOCs methylenebisbenzenamine;4,4-60-34-4 VOCs methylhydrazine
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Database
Isopropalin, Benzenamine, 4-(1-methylethyl)-2,6-dinitro- N,N-dipropyl-Monoisopropyl methylphosphonate, Isopropyl methyl phosphonic acid, Phosphonic acid, methyl-, mono(1-methylethyl) esterIsoxaben, Benzamide, N-[3-(1-ethyl-1-methylpropyl)-5-isoxazolyl]-2,6-dimethoxy-Lactofen, Benzoic acid, 5-[2-chloro-4-(trifluoromethyl) phenoxy]-2-nitro-, 2-ethoxy-1-methyl-2-oxoethyl ester
Lindane, Benzene hexachloride, Cyclohexane, 1,2,3,4,5,6-hexachloro-, (1.alpha.,2.alpha.,3.beta.,4.alpha.,5.alpha.,6.beta.)-, gamma-BHC, gamma-HexachlorocyclohexaneLinuron, Urea, N'-(3,4-dichlorophenyl)-N-methoxy-N-methyl-Lithium perchlorate, Perchloric acid, lithium salt \Bensulfuron-methyl, Londax
Maleic anhydride, 2,5-FurandioneMaleic hydrazide, 3,6-Pyridazinedione, 1,2-dihydro-Malononitrile, PropanedinitrileMancozeb, Manganese, [[2-[(dithiocarboxy)amino] ethyl]carbamodithioato(2-)-. kappa.S,.kappa.S']-, mixt. with [[2-[(dithiocarboxy)amino] ethyl]carbamodithioato(2-)-. kappa.S,.kappa.S']zincManeb, Manganese, [[2-[(dithiocarboxy)amino] ethyl]carbamodithioato(2-)-. kappa.S,.kappa.S']-
Mephosfolan, Phosphoramidic acid, (4-methyl-1,3-dithiolan-2- ylidene)-, diethyl esterMepiquat chloride, Piperidinium, 1,1-dimethyl-, chlorideMercuric chloride, Mercury chloride (HgCl2)
Merphos, Phosphorotrithious acid, tributyl ester
Methamidophos, Acephate-met, Monitor, Phosphoramidothioic acid, O,S-dimethyl e
Methomyl, Ethanimidothioic acid, N-[[(methylamino)carbonyl]oxy]-, methyl ester2-Methoxy-5-nitroaniline, Benzenamine, 2-methoxy-5-nitro-, 5-Nitro-o-anisidine
2-Methoxyethanol acetate, Ethanol, 2-methoxy-, acetate2-Methoxyethanol, Ethanol, 2-methoxy-, Ethylene glycol monomethyl ether, Methyl cellosolve
Methyl ethyl ketone, 2-Butanone, MEKMethyl isobutyl ketone, 2-Pentanone, 4-methyl-, 4-Methyl-2-pentanone, Hexone, MIBKMethyl mercury, Methylmercury, Methylmercury(1+)
1-Methylnaphthalene, Naphthalene, 1-methyl-2-Methylnaphthalene, Naphthalene, 2-methyl-Methyl Parathion, Phosphorothioic acid, O,O-dimethyl O-(4-Vinyl toluene, Benzene, ethenylmethyl-, Methyl styrene.alpha.-Methylstyrene, Benzene, (1-methylethenyl)-, Methyl styrene, alphaMethyl t-butyl ether, MTBE, Propane, 2-methoxy-2-methyl-MCPA, Acetic acid, (4-chloro-2-methylphenoxy)-, MCPA acid5-Nitro-o-toluidineo-Toluidine hydrochloride, Benzenamine, 2-methyl-, hydrochloride (1:1), methylaniline hydrochloride;2-o-Toluidine, 2-Aminotoluene, Benzenamine, 2-methyl
4,4'-Methylenebis[N,N-dimethylaniline], Benzenamine, 4,4'-methylenebis[N,N- dimethyl-dibromomethane Methylene Chloride, Dichloromethane, Methane, dichloro-, DCM4,4'-Methylenedi(phenyl isocyanate), Benzene, 1,1'-methylenebis[4-isocyanato-Polymeric diphenylmethane diisocyanate, Isocyanic acid, polymethylenepolyphenylene ester4,4'-Methylenedianiline, Benzenamine, 4,4'-methylenebis-Methyl hydrazine, Methylhydrazine
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes51218-45-2 Pesticides metolachlor21087-64-9 Pesticides metribuzin
2385-85-5 Pesticides mirex2212-67-1 Pesticides molinate7439-98-7 Metals molybdenum
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS300-76-5 Pesticides naled
91-20-3 PAHs naphthalene15299-99-7 Pesticides napropamide
104-51-8 VOCs n-butylbenzeneE715532 Metals nickel refinery dust
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT12035-72-2 Metal compounds nickel subsulfide14797-55-8 Nutrients nitrate14797-65-0 Nutrients nitrite
88-74-4 SVOCs nitroaniline, 2-100-01-6 SVOCs nitroaniline, 4-
98-95-3 Explosives nitrobenzene67-20-9 SVOCs nitrofurantoin59-87-0 SVOCs nitrofurazone
556-88-7 SVOCs nitroguanidine79-46-9 VOCs nitropropane;2-
1116-54-7 SVOCs nitrosodiethanolamine;N-55-18-5 SVOCs nitrosodiethylamine;N-62-75-9 SVOCs nitrosodimethylamine;N-
924-16-3 VOCs nitroso-di-n-butylamine;N-621-64-7 SVOCs nitroso-di-n-propylamine;N-
86-30-6 SVOCs nitrosodiphenylamine;N-759-73-9 SVOCs nitroso-n-ethylurea;n-
10595-95-6 SVOCs nitroso-N-methylethylamine;N-684-93-5 SVOCs nitroso-n-methylurea,n-930-55-2 SVOCs nitrosopyrrolidine;N-
99-08-1 Explosives nitrotoluene, m-88-72-2 Explosives nitrotoluene, o-99-99-0 Explosives nitrotoluene, p-
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon85509-19-9 Pesticides nustar32536-52-0 PBDEs octabromodiphenyl ether
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine152-16-9 SVOCs octamethylpyrophosphoramide
19044-88-3 Pesticides oryzalin19666-30-9 Pesticides oxadiazon23135-22-0 Pesticides (Carbamate) oxamyl42874-03-3 Pesticides oxyfluorfen76738-62-0 Herbicides paclobutrazol
1910-42-5 Pesticides Paraquat Dichloride56-38-2 Pesticides parathion
1114-71-2 Pesticides pebulate40487-42-1 Pesticides pendimethalin
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5-60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5-32534-81-9 PBDEs pentabromodiphenyl ethers
608-93-5 SVOCs pentachlorobenzene82-68-8 Pesticides pentachloronitrobenzene87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT
14797-73-0 Perchlorates perchlorate and perchlorate salts52645-53-1 Pesticides permethrin
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Database
Mirex, Dechlorane
Chloramine, Chloramide, MonochloramineNaled, Phosphoric acid, 1,2-dibromo-2,2-dichloroethyl dimethyl esterNaphthalene, Aromatic oil #2, Aromatic oil #3, Napthalene, Tar Camphor
n-Butylbenzene, Benzene, butyl-
Nickel subsulfide, Nickel sulfide (Ni3S2)Nitrate, Nitrogen, nitrate total (as NO3)
2-Nitroaniline, o-Nitroaniline4-Nitroaniline, p-NitroanilineNBNitrofurantoin, 2,4-Imidazolidinedione, 1-[[(5-nitro-2-furanyl)methylene]amino]-Nitrofurazone, Hydrazinecarboxamide, 2-[(5-nitro-2-furanyl)methylene]-
N-Nitrosodimethylamine, Methanamine, N-methyl-N-nitroso-, NDMA
N-Nitrosodi-n-propylamine, Di-n-propylnitrosamine, N-Nitrosodipropylamine
N-Nitroso-N-ethylurea, nitroso-n-ethylurea;n-, Urea, N-ethyl-N-nitroso-N-NitrosomethylethylamineN-Nitroso-N-methylurea, nitroso-n-methylurea,n-, Urea, N-methyl-N-nitroso-N-Nitrosopyrrolidine3-Nitrotoluene, 3-NT2-Nitrotoluene, 2-NT4-Nitrotoluene, 4-NT4-Nonylphenol branched, 4-Nonylphenol, mixed isomers, Branched p-nonylphenol, Phenol, 4-nonyl-, branched
Flusilazole, 1H-1,2,4-Triazole, 1-[[bis(4-fluorophenyl)methylsilyl] methyl]-, NuStarPBDE, Octabromodiphenyl ethers, Benzene, 1,1'-oxybis-, octabromo deriv., Total octabromodiphenyl ethersHMXSchradan, Octamethylpyrophosphoramide
Oxadiazon, OxydiazonOxamyl, Ethanimidothioic acid, 2-(dimethylamino)-N-[[(methylamino)carbonyl]oxy]-2-oxo-, methyl ester, VydategoalPaclobutrazol, 1H-1,2,4-Triazole- 1-ethanol, .beta.-[(4-chlorophenyl)methyl]-. alpha.-(1,1-dimethylethyl)-, (.alpha.R,.beta.R)-rel-Paraquat, 4,4'-Bipyridinium, 1,1'-dimethyl-, Paraquat dication, Paraquat ionParathion, Ethyl parathion, Phosphorothioic acid, O,O-diethy O-(p-ni
PBDE-099, BDE-99, 2,2',4,4',5-Pentabromodiphenyl ether, Benzene, 1,2,4-tribromo-5-(2,4-dibromophenoxy)-Pentabromodiphenyl ether, Benzene, 1,1'-oxybis-, pentabromo deriv., Bromkal 70, DE-71, Pentabromobiphenyl ether, Pentabromodiphenyl oxide, Tardex 50Pentachlorobenzene, Benzene, 1,2,3,4,5-pentachloro-, Benzene, pentachloro-Pentachloronitrobenzene, PCNBPentachlorophenol, Dowicide 7, PCP
Permethrin, Cyclopropanecarboxylic acid, 3-(2,2-dichloroethenyl)-2,2-dimethyl-, (3-phenoxyphenyl) methyl ester, Permethrin, mixed cis, trans
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notesunavailable19 General Chemistry pH pH NOTES
13684-63-4 Pesticides phenmedipham108-95-2 Phenols phenol106-50-3 SVOCs phenylenediamine, p-108-45-2 SVOCs phenylenediamine;m-
95-54-5 SVOCs phenylenediamine;o-62-38-4 Metals (organometallic) phenylmercuric acetate90-43-7 Phenols phenylphenol;2-
298-02-2 Pesticides phorate75-44-5 VOCs phosgene
732-11-6 Pesticides phosmet7803-51-2 Gases phosphine7664-38-2 SVOCs phosphoric acid7723-14-0 Nonmetal inorganics phosphorus
100-21-0 Phthalates phthalic acid;p-85-44-9 Phthalates phthalic anhydride
1918-02-1 Herbicides picloram29232-93-7 Pesticides pirimiphos-methyl36355-01-8 PBBs polybrominated biphenyls
1336-36-3 PCBs polychlorinated biphenyls (PCBs)151-50-8 Cyanides potassium cyanide
7778-74-7 Perchlorates potassium perchlorate506-61-6 Cyanides potassium silver cyanide
67747-09-5 Pesticides prochloraz (not in HSDB)26399-36-0 Pesticides profluralin
1610-18-0 Pesticides prometon7287-19-6 Pesticides prometryn
23950-58-5 Pesticides pronamide1918-16-7 Pesticides propachlor
709-98-8 Pesticides propanil2312-35-8 Pesticides propargite
107-19-7 VOCs propargyl alcohol139-40-2 Pesticides propazine122-42-9 Pesticides propham
60207-90-1 Pesticides propiconazole123-38-6 VOCs propionaldehyde
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2-103-65-1 VOCs propylbenzene;n-
57-55-6 Glycols propylene glycol6423-43-4 Glycols propylene glycol dinitrate;1,2-
52125-53-8 Glycols propylene glycol monoethyl ether107-98-2 Glycols propylene glycol monomethyl ether
75-56-9 VOCs propylene oxide81335-77-5 Pesticides pursuit51630-58-1 Pesticides pydrin
129-00-0 PAHs pyrene110-86-1 VOCs pyridine
13593-03-8 Pesticides quinalphos91-22-5 SVOCs quinoline
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdxE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE
10453-86-8 Pesticides resmethrin299-84-3 Pesticides ronnel
83-79-4 Pesticides rotenone78-48-8 Pesticides s,s;s-tributylphosphorotrithioate
78587-05-0 Pesticides savey
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Database
Phenmedipham, Carbamic acid, (3-methylphenyl)-, 3-[(methoxycarbonyl)amino] phenyl esterPhenol, Benzene, hydroxy-, Carbolic acid1,4-Benzenediamine, p-Phenylenediamine, 1,4-Phenylenediamine
1,2-Phenylenediamine, 1,2-Benzenediamine, o-PhenylenediaminePhenylmercury Acetate, Mercury, (acetato-.kappa.O) phenyl-, PMA[1,1'-Biphenyl]-2-Ol, 2-Phenylphenol, o-Biphenylol
Phosgene, Carbonic dichloridePhosmet, Imidan, Phosphorodithioic acid, S-[(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl] O,O-dimethyl esterPhosphine, Hydrogen phosphide
Terephthalic acid, 1,4-Benzenedicarboxylic acid, p-Phthalic acidPhthalic Anhydride, 1,3-IsobenzofurandionePicloram, 2-Pyridinecarboxylic acid, 4-amino-3,5,*Pirimiphos-methyl, Phosphorothioic acid, O-[2-(diethylamino)-6-methyl-4-pyrimidinyl] O,O-dimethyl esterFireMaster BP 6, Hexabromobiphenyl, Polybrominated biphenyls
Potassium cyanide, Potassium cyanide (K(CN))Potassium perchlorate, Perchloric acid, potassium saltPotassium silver cyanide, Argentate(1-), bis(cyano-.kappa.C)-, potassium (1:1)Prochloraz, 1H-Imidazole-1-carboxamide, N-propyl-N-[2-(2,4,6-trichlorophenoxy) ethyl]-
Prometon, Pramitol
Pronamide (Kerb), Benzamide, 3,5-dichloro-N-(1,1-dimethyl-2-propynyl)-, KERBRamrodPropanil, Propanamide, N-(3,4-dichlorophenyl)-Propargite, Sulfurous acid, 2-[4-(1,1-dimethylethyl)phenoxy]cyclohexyl 2-propynyl ester, Propargite (S-181)Propargyl alcohol, 2-Propyn-1-ol
Propham, Carbamic acid, phenyl-, 1-methylethyl esterPropiconazole, 1H-1,2,4-Triazole, 1-[[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl]methyl]-
Mecoprop, MCPP, Propanoic acid, 2-(4-chloro-2-methylphenoxy)-
Propylene Glycol Dinitrate1(or 2)-Ethoxypropanol, Propanol, 1(or 2)-ethoxy-, Propylene glycol ethyl etherPropylene glycol 1-methyl ether, 2-Propanol, 1-methoxy-, Propylene glycol monomethyl etherPropylene oxide, Oxirane, 2-methyl-Imazethapyr, 3-Pyridinecarboxylic acid, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-, PursuitFenvalerate, SumicidePyrene, Benzo[def]phenanthrene
Quinalphos, Phosphorothioic acid, O,O-diethyl O-2-quinoxalinyl esterQuinoline, Benzo[b]pyridineRadium-226, Radium 226, Radium, isotope of mass 226
hexahydro-1,3,5-trinitro-1,3,5-triazine
merphos oxide, DEF (Butifos)Hexythiazox, Savey
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes135-98-8 VOCs sec-butylbenzene
7783-00-8 Metal compounds selenious acid7782-49-2 Metals selenium and compounds
74051-80-2 Pesticides sethoxydim7440-22-4 Metals SILVER HARDNESS - DEPENDENT
506-64-9 Cyanides silver cyanide122-34-9 Pesticides simazine
26628-22-8 Metal compounds sodium azide143-33-9 Cyanides sodium cyanide148-18-5 Metals (organometallic) sodium diethyldithiocarbamate
62-74-8 Metals (organometallic) sodium fluoroacetate13718-26-8 Metal compounds sodium metavanadate
7601-89-0 Perchlorates sodium perchlorate7440-24-6 Metals strontium
57-24-9 SVOCs strychnine100-42-5 VOCs styrene
88671-89-0 Pesticides systhane1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES
34014-18-1 Pesticides tebuthiuron3383-96-8 Pesticides temephos5902-51-2 Pesticides terbacil
13071-79-9 SVOCs terbufos886-50-0 Pesticides terbutryn
98-06-6 VOCs tert-butylbenzene5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4'
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5-630-20-6 VOCs tetrachloroethane;1,1,1,2-
79-34-5 VOCs tetrachloroethane;1,1,2,2-127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,-
961-11-5 Pesticides tetrachlorvinphos3689-24-5 Pesticides tetraethyl dithiopyrophosphate
78-00-2 Metals (organometallic) tetraethyl lead811-97-2 VOCs tetrafluoroethane;1,1,1,2-109-99-9 Furans tetrahydrofuran
1314-32-5 Metal compounds thallic oxide563-68-8 Metal compounds thallium acetate
6533-73-9 Metal compounds thallium carbonate7791-12-0 Metal compounds thallium chloride
10102-45-1 Metal compounds thallium nitrate12039-52-0 Metal compounds thallium selenite
7446-18-6 Metal compounds thallium(I) sulfate7440-28-0 Metals thallium, soluble salts
28249-77-6 Pesticides thiobencarb21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2-39196-18-4 Pesticides thiofanox23564-05-8 Pesticides thiophanate-methyl
137-26-8 Pesticides thiram7440-31-5 Metals tin
118-96-7 Explosives tnt108-88-3 VOCs toluene
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6-584-84-9 VOCs toluene-2,4-diisocyanate
91-08-7 VOCs toluene-2,6-diisocyanate95-70-5 SVOCs toluenediamine;2,5-
106-49-0 SVOCs toluidine;p-8001-35-2 Pesticides toxaphene
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) DatabaseSec-Butylbenzene, Benzene, (1-methylpropyl)-
Sethoxydim, 2-Cyclohexen-1-one, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-
Sodium diethyldithiocarbamate, Carbamodithioic acid, diethyl-, sodium saltSodium Fluoroacetate, 1080, Acetic acid, fluoro-, sodium saltSodium vanadate, Sodium metavanadate, Vanadate (VO31-), sodiumSodium perchlorate, Perchloric acid, sodium salt
Strychnine, Strychnidin-10-oneStyrene, Benzene, ethenyl-Myclobutanil, 1H-1,2,4-Triazole-1-propanenitrile, .alpha.-butyl-.alpha.-(4-chlorophenyl)-, Systhane2,3,7,8-TCDD, 2,3,7,8-Tetrachlorodibenzo-p-dioxin
PBDE-047, BDE-47, 2,2',4,4' - tetrabromodiphenyl ether, Benzene, 1,1'-oxybis[2,4-dibromo-
1,1,2,2-Tetrachloroethane, 1,1,2,2-PCA, Ethane, 1,1,2,2-tetrachloro-Tetrachloroethene, Ethene, 1,1,2,2-tetrachloro-, PCE, Perc, Perchloroethene, Perchloroethylene, Tetrachloroethylene
4-Chlorobenzotrichloride, Benzene, 1-chloro-4-(trichloromethyl)-, p,a,a,a-Tetrachlorotoluenestirofos, gardona
Tetraethyllead, Plumbane, tetraethyl-, Tetraethyl leadHFC-134a, Ethane, 1,1,1,2-tetrafluoro-Tetrahydrofuran, Diethylene oxide, Tetramethylene oxideThallic oxide, Thallium oxide (Tl2O3), Thallium(III) oxideThallium acetate, Acetic acid, thallium(1+) salt (1:1), Thallium(I) acetateThallium(I) carbonate, Carbonic acid, dithallium(1+) salt, Thallium carbonateThallium chloride, Thallium(I) chloride, Thallous chlorideThallium nitrate, Nitric acid, thallium(1+) salt (1:1), Thallium(I) nitrateThallium(I) selenite, Selenious acid, dithallium(1+) saltThallium sulfate, Sulfuric acid, thallium(1+) salt (1:2), Thallium(I) sulfate
Thiobencarb, Benthiocarb, Carbamothioic acid, diethyl-, S-[(4-chlorophenyl)methyl] esterTCMTB Thiofanox, 2-Butanone, 3,3-dimethyl-1-(methylthio)*Thiophanate-methyl, Carbamic acid, [1,2-phenylenebis(iminocarbonothioyl)]bis-, dimethyl esterThiram, Thioperoxydicarbonic diamide ([(H2N)C(S)]2S2), N,N,N',N'-tetramethyl-
Trinitrotoluene, Benzene, 2-methyl-1,3,5-trinitro-, trinitrotoluene, 2,4,6-, 2,4,6-TNTToluene, Benzene, methyl-Toluene Diisocyanate, Benzene, 1,3-diisocyanatomethyl-Benzene, 2,4-diisocyanato-1-methyl-, 2,4-Toluene diisocyanate
p-Toluidine, Benzenamine, 4-methyl-
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Master Table August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes93-72-1 Herbicides tp;2,4,5-
unavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin2303-17-5 Pesticides triallate
82097-50-5 Pesticides triasulfuron615-54-3 VOCs tribromobenzene;1,2,4-688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2-76-03-9 SVOCs trichloroacetic acid
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6-634-93-5 SVOCs trichloroaniline;2,4,6-120-82-1 VOCs trichlorobenzene;1,2,4-
71-55-6 VOCs trichloroethane;1,1,1-79-00-5 VOCs trichloroethane;1,1,2-79-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES75-69-4 VOCs trichlorofluoromethane95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5-
598-77-6 VOCs trichloropropane;1,1,2-96-18-4 VOCs trichloropropane;1,2,3-96-19-5 VOCs trichloropropene;1,2,3-
58138-08-2 Pesticides tridiphane121-44-8 VOCs triethylamine
1582-09-8 Pesticides trifluralinunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate526-73-8 VOCs trimethylbenzene;1,2,3-
95-63-6 VOCs trimethylbenzene;1,2,4-108-67-8 VOCs trimethylbenzene;1,3,5-
99-35-4 Explosives trinitrobenzene;1,3,5-479-45-8 Explosives trinitrophenylmethylnitramine
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS7440-62-2 Metals vanadium1314-62-1 Metal compounds vanadium pentoxide1929-77-7 Pesticides vernam
50471-44-8 Pesticides vinclozolin108-05-4 VOCs vinyl acetate
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES81-81-2 Pesticides warfarin
8012-95-1 Petroleum white mineral oil108-38-3 VOCs xylene;m-
95-47-6 VOCs xylene;o-106-42-3 VOCs xylene;p-
1330-20-7 VOCs xylenes7440-66-6 Metals ZINC HARDNESS - DEPENDENT
557-21-1 Cyanides zinc cyanide1314-84-7 Metal compounds zinc phosphide
12122-67-7 Pesticides zineb
Chemical Synonyms
Compiled from Ecology's Environmental Information Management System (EIM) Databasefenoprop, Silvex, 2,4,5-TP, 2-(2,4,5-trichlorophenoxy)-propionic acid
Tralomethrin, Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(1,2,2,2-tetrabromoethyl)-, cyano(3-phenoxyphenyl)methyl ester, Scout X-tra
Triasulfuron, 1-[2-(2-chloroethoxy)phenylsulfonyl]-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
Tributyltin, Stannane, tributyl-, Tributyl tin, TBT, Tri-n-butyltin
Nitrogen chlorideCFC-113, 1,1,2-Trichlorotrifluoroethane, Ethane, 1,1,2-trichloro-1,2,2-trifluoro-, Freon 113
2,4,6-Trichloroaniline hydrochloride, Benzenamine, 2,4,6-trichloro-, hydrochloride2,4,6-Trichloroaniline, Benzenamine, 2,4,6-trichloro-1,2,4-Trichlorobenzene, Benzene, 1,2,4-trichloro-
1,1,2-Trichloroethane, 1,1,2-TCA, Ethane, 1,1,2-trichloro-Trichloroethene, Ethene, trichloro-, TCE, TrichloroethyleneCFC-11, Freon 11, Methane, trichlorofluoro-, Trichlorofluoromethane
2,4,6-Trichlorophenol, Phenol, 2,4,6-trichloro-2,4,5-T, Acetic acid, (2,4,5-trichlorophenoxy)-1,1,2-Trichloropropane, Trichloropropane;1,1,2-
1,2,3-Trichloropropene, Trichloropropene;1,2,3-Tridiphane, Oxirane, 2-(3,5-dichlorophenyl)-2-( 2,2,2-trichloroethyl)-Triethylamine, Ethanamine, N,N-diethyl-Trifluralin, Benzenamine, 2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)-, Treflan
Trimethyl phosphate, Phosphoric acid, trimethyl ester
1,3,5-TNBtetryl, 2,4,6-Trinitrophenylmethylnitramine
vernolate Vinclozolin, 2,4-Oxazolidinedione, 3-(3,5-dichlorophenyl)-5-ethenyl-5-methyl-
Vinyl Chloride, Chloroethene, Chloroethylene, Ethene, chloro-, Ethylene, chloro-
Paraffin oils, Mineral oilm-Xylene, Benzene, 1,3-dimethyl-o-Xylene, Benzene, 1,2-dimethyl-p-Xylene, Benzene, 1,4-dimethyl-Total Xylenes, Benzene, dimethyl-, Xylenes, Xylenes (mixture of o, m, and p isomers)
Zineb, Zinc, [[2-[(dithiocarboxy)amino] ethyl]carbamodithioato(2-)-. kappa.S,.kappa.S']-
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
83-32-9 PAHs acenaphthene 6.00E-02 I 4.80E+03 9.80E+01 5.00E+0030560-19-1 Pesticides acephate 1.20E-03 O 9.60E+01
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-0334256-82-1 Pesticides acetochlor 2.00E-02 I 1.60E+03
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I 7.20E+04 2.90E+01 2.10E+0075-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-0475-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-0298-86-2 SVOCs acetophenone 1.00E-01 I 8.00E+03
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I 1.00E+03107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 4.00E+01
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M 1.60E+02 3.80E-0179-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I 4.00E+04
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 3.20E+03 1.90E+0015972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C 8.00E+02 1.80E+01
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C 1.20E+04 5.60E+01116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I 8.00E+01
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I 8.00E+01309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 2.40E+00 5.90E-02 2.50E-03 1.30E-04
74223-64-6 Pesticides ally 2.50E-01 I 2.00E+04107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I 4.00E+02107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C 4.80E+01
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P 8.00E+0420859-73-8 Metal compounds aluminum phosphide 4.00E-04 I 3.20E+0167485-29-4 Pesticides amdro 1.70E-02 O 1.40E+03
834-12-8 Pesticides ametryn 9.00E-03 I 7.20E+02591-27-5 Phenols aminophenol;m- 8.00E-02 P 6.40E+03
33089-61-1 Pesticides amitraz 2.50E-03 I 2.00E+027664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-017790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I 5.60E+017773-06-0 Pesticides ammonium sulfamate 2.00E-01 I 1.60E+04
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I 5.60E+02 1.80E+02120-12-7 PAHs anthracene 3.00E-01 I 2.40E+04 2.30E+03 1.10E+02
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 3.20E+01 5.40E+00 2.70E-011314-60-9 Metal compounds antimony pentoxide 5.00E-04 H 4.00E+01
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H 7.20E+011332-81-6 Metal compounds antimony tetroxide 4.00E-04 H 3.20E+011309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05
74115-24-5 Pesticides apollo 1.30E-02 I 1.00E+03140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I 4.00E+03 4.00E+01
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 5.60E+00 1.40E+01 1.20E-0111097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 1.60E+00 5.00E-01 3.50E-0211096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S 5.00E-01 3.60E-02
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 2.00E+01 2.40E+01 6.70E-01 2.90E+00 1.50E-017784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C 2.80E-011332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I
76578-14-8 Pesticides assure 9.00E-03 I 7.20E+023337-71-1 Pesticides asulam 3.60E-02 O 2.90E+031912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C 2.80E+03 4.30E+00
65195-55-3 Pesticides avermectin B1 4.00E-04 I 3.20E+01103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I 9.10E+00
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I 1.60E+04 1.60E+03 8.30E+01114-26-1 Pesticides baygon 4.00E-03 I 3.20E+02
43121-43-3 Pesticides bayleton 3.40E-02 O 2.70E+0368359-37-5 Pesticides baythroid 2.50E-02 I 2.00E+03
1861-40-1 Pesticides benefin 5.00E-03 O 4.00E+0217804-35-2 Pesticides benomyl 5.00E-02 I 4.00E+0325057-89-0 Herbicides bentazon 3.00E-02 I 2.40E+03
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P 8.00E+03 2.50E+02
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 71 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
71-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 3.00E-02 3.20E+02 1.80E+01 2.70E-02 1.70E-03108-98-5 SVOCs benzenethiol 1.00E-03 P 8.00E+01
92-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 2.40E+02 4.30E-0356-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 1.00E-01 2.40E+01 1.90E-01 3.90E+00 1.90E-01
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I 3.20E+05 2.60E+02 1.80E+0198-07-7 VOCs benzotrichloride 1.30E+01 I 7.70E-02
100-51-6 SVOCs benzyl alcohol 1.00E-01 P 8.00E+03100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I 1.60E+02 5.90E+00
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 1.60E+02 6.30E+01 3.20E+0091-58-7 PAHs beta-chloronaphthalene 8.00E-02 I 6.40E+03
141-66-2 Pesticides bidrin 3.00E-05 O 2.40E+0082657-04-3 Pesticides biphenthrin 1.50E-02 I 1.20E+03
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I 4.00E+04 1.30E+02108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 3.20E+03 1.40E+01111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 9.10E-01 2.20E-04 1.40E-05117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 1.60E+03 7.10E+01 1.30E+01 6.70E-01542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I 4.50E-03
80-05-7 Phenols bisphenol a 5.00E-02 I 4.00E+037440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I 1.60E+04
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I 3.20E+02 1.40E+0079-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I 6.40E+02 5.60E-01 3.30E-0275-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 1.60E+03 1.60E+01 3.60E-02 2.40E-03
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-0175-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 1.60E+03 1.30E+02 3.60E-01 2.30E-0274-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 1.10E+02 5.00E-02 3.30E-03
2104-96-3 Pesticides bromophos 5.00E-03 H 4.00E+021689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O 1.20E+03 1.00E+011689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O 1.20E+03 1.00E+01
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C 1.70E+0071-36-3 VOCs butanol;n- 1.00E-01 I 8.00E+03 3.30E+00 2.30E-0185-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P 1.60E+04 5.30E+02 1.30E+01 6.50E-01
2008-41-5 Pesticides butylate 5.00E-02 I 4.00E+0385-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I 8.00E+0494-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O 3.50E+0275-60-5 Pesticides cacodylic acid 2.00E-02 A 1.60E+03
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 2.00E+00 8.00E+01 6.90E-01 3.50E-02
592-01-8 Cyanides calcium cyanide 1.00E-03 I 8.00E+01105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I 4.00E+04
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C 1.60E+02 6.70E+00133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C 1.00E+04 4.30E+02
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I 8.00E+031563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I 4.00E+02
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I 8.00E+03 5.00E+00 2.70E-0156-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 3.20E+02 1.40E+01 4.20E-02 2.20E-03
55285-14-8 Pesticides carbosulfan 1.00E-02 I 8.00E+025234-68-4 Pesticides carboxin 1.00E-01 I 8.00E+031306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04
302-17-0 VOCs chloral hydrate 1.00E-01 I 8.00E+03133-90-4 Herbicides chloramben 1.50E-02 I 1.20E+03118-75-2 Pesticides chloranil 4.00E-01 H 2.50E+00
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 4.00E+01 2.90E+00 2.10E+00 1.00E-01143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I 2.40E+01 1.00E-01
16887-00-6 Nutrients chloride
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 72 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
90982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O 7.20E+037782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 8.00E+03
506-77-4 Cyanides chlorine cyanide 5.00E-02 I 4.00E+0310049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I 2.40E+03
7758-19-2 Nutrients chlorite 3.00E-02 I 2.40E+0375-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01
126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H 1.60E+033165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H 2.20E+00
95-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P 2.40E+02 1.00E+0179-11-8 SVOCs chloroacetic acid 2.00E-03 H 1.60E+02
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P 3.20E+02 5.00E+00 1.20E-03 7.70E-05108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 1.60E+03 8.60E-01 5.10E-02510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C 1.60E+03 9.10E+00
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X 2.40E+0398-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P 2.40E+02
109-69-3 VOCs chlorobutane;1- 4.00E-02 P 3.20E+0359-50-7 Phenols chlorocresol 1.00E-01 A 8.00E+0375-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+0167-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 8.00E+02 3.20E+01 7.40E-02 4.80E-0374-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C 4.20E-0188-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P 2.40E+02 3.30E+00
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P 5.60E+01 1.70E+0195-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I 4.00E+02 4.70E-01 2.70E-02
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C 1.20E+03 5.90E+0195-49-8 VOCs chlorotoluene;o- 2.00E-02 I 1.60E+03
101-21-3 Pesticides chlorpropham 5.00E-02 O 4.00E+032921-88-2 Pesticides chlorpyrifos 1.00E-03 A 8.00E+015598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H 8.00E+02
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O 4.00E+0360238-56-4 Pesticides chlorthiophos 8.00E-04 H 6.40E+01
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I 2.00E+03 1.20E+05 4.80E+05 2.40E+0418540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 1.90E+01 2.40E+02 1.80E+01 9.30E-01
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P 2.40E+01 4.30E+00 2.20E-01
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+007440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H 3.20E+03 2.80E+02 1.40E+01
544-92-3 Cyanides copper cyanide 5.00E-03 I 4.00E+02108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I 4.00E+03
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I 4.00E+03 2.30E+00 1.50E-01106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A 8.00E+03123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H 8.00E+01 5.30E-01
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I 8.00E+0321725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H 1.60E+02 1.20E+00
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 5.00E+01460-19-5 Cyanides cyanogen 1.00E-03 I 8.00E+01506-68-3 Cyanides cyanogen bromide 9.00E-02 I 7.20E+03110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I 4.00E+05108-91-8 VOCs cyclohexylamine 2.00E-01 I 1.60E+04
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O 8.00E+0152315-07-8 Pesticides cypermethrin 2.30E-02 O 1.80E+0366215-27-8 Pesticides cyromazine 5.00E-01 O 4.00E+04
1861-32-1 Herbicides dacthal 1.00E-02 I 8.00E+0275-99-0 Herbicides dalapon, sodium salt 3.00E-02 I 2.40E+03
39515-41-8 Pesticides danitol 2.50E-02 I 2.00E+03
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 73 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
94-82-6 Pesticides db;2,4- 3.00E-02 O 2.40E+0372-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 2.40E+00 4.20E+00 3.40E-01 1.70E-0272-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 2.40E+01 2.90E+00 4.50E-01 2.20E-0250-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 3.00E+00 4.00E+01 2.90E+00 3.50E+00 1.70E-01
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I 5.60E+02 1.40E+038065-48-3 Pesticides demeton 4.00E-05 I 3.20E+00
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I 4.80E+04 8.30E+022303-16-4 Pesticides diallate 6.10E-02 H 1.60E+01
333-41-5 Pesticides diazinon 7.00E-04 A 5.60E+0153-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran 1.00E-03 X 8.00E+0196-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P 1.60E+01 1.30E+00
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I 8.00E+02124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I 1.60E+03 1.20E+01 2.80E-02 1.80E-03
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I 8.00E+03 5.70E+01 3.00E+001918-00-9 Herbicides dicamba 3.00E-02 I 2.40E+033400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+0179-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I 3.20E+02 2.00E+0195-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 7.20E+03 7.00E+00 4.00E-01
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 5.60E+03 1.90E+02 1.20E+00 6.80E-02
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 2.20E+00 3.60E-03 2.00E-0475-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I 1.60E+0475-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C 1.60E+04 1.80E+02 4.10E-02 2.60E-03
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 4.80E+02 1.10E+01 2.30E-02 1.60E-03540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H 7.20E+02
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 4.00E+03 4.60E-02 2.50E-03156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I 1.60E+02 7.80E-02 5.20E-03156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I 1.60E+03 5.20E-01 3.20E-02120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I 2.40E+02 1.70E-01 1.00E-02
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I 8.00E+0278-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 3.20E+03 2.70E+01 2.50E-02 1.70E-03
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I 2.40E+02542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 2.40E+03 1.00E+01 2.30E-03 1.40E-04
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I 4.00E+01 3.40E+0077-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P 6.40E+0360-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 4.00E+00 6.30E-02 2.80E-03 1.40E-0484-66-2 Phthalates diethyl phthalate 8.00E-01 I 6.40E+04 7.20E+01 4.70E+00
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P 2.40E+03111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P 4.80E+03617-84-5 SVOCs diethylformamide 1.00E-03 P 8.00E+01
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C 2.90E-0343222-48-6 Pesticides difenzoquat 8.30E-02 O 6.60E+0335367-38-5 Pesticides diflubenzuron 2.00E-02 I 1.60E+03
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+011445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I 6.40E+03
55290-64-7 Pesticides dimethipin 2.20E-02 O 1.80E+0360-51-5 Pesticides dimethoate 2.20E-03 O 1.80E+02
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P 6.30E-01131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I 8.00E+03
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H 1.70E+0095-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P 1.60E+02 5.00E+00
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P 1.60E+02 3.70E+01119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P 9.10E-02
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P 8.00E+03
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 74 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
57-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X 8.00E+00540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C 1.80E-03105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I 1.60E+03 1.30E+00 7.90E-02576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I 4.80E+01
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I 8.00E+0199-65-0 Explosives dinitrobenzene;m- 1.00E-04 I 8.00E+00
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P 8.00E+00100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P 8.00E+00131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I 1.60E+02
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I 1.60E+02 1.30E-01 9.20E-0325550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I 7.20E+01 1.50E+00121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 1.60E+02 3.20E+00 1.70E-03 1.10E-04606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P 2.40E+01 6.70E-01 3.10E-04 2.10E-05117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P 8.00E+02 2.70E+05 1.30E+04
88-85-7 Herbicides dinoseb 1.00E-03 I 8.00E+01123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I 2.40E+03 1.00E+01957-51-7 Pesticides diphenamid 3.00E-02 I 2.40E+03122-39-4 Pesticides diphenylamine 1.00E-01 O 8.00E+03122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 1.30E+00
85-00-7 Pesticides diquat 2.20E-03 I 1.80E+021937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C 1.40E-012602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C 1.40E-01
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C 1.50E-01298-04-4 Pesticides disulfoton 4.00E-05 I 3.20E+00505-29-3 SVOCs dithiane;1,4- 1.00E-02 I 8.00E+02330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I 1.60E+02534-52-1 Phenols DNOC 8.00E-05 X 6.40E+00
2439-10-3 Pesticides dodine 2.00E-02 O 1.60E+03115-29-7 Pesticides endosulfan 6.00E-03 I 4.80E+02 4.30E+00 2.20E-01
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P 4.80E+02959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall 2.00E-02 I 1.60E+03
72-20-8 Pesticides endrin 3.00E-04 I 2.40E+01 4.40E-01 2.20E-027421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I 4.80E+02 1.00E+02106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03
16672-87-0 Pesticides ethephon 5.00E-03 I 4.00E+02563-12-2 Pesticides ethion 5.00E-04 I 4.00E+01111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P 8.00E+03110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P 7.20E+03141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I 7.20E+04140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H 4.00E+02 2.10E+01
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O 4.00E+03
60-29-7 VOCs ethyl ether 2.00E-01 I 1.60E+0497-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H 7.20E+03
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I 8.00E-01100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 6.00E+00 8.00E+03 5.90E+00 3.40E-01109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P 5.60E+03107-15-3 VOCs ethylene diamine 9.00E-02 P 7.20E+03106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I 5.00E-03 7.20E+02 5.00E-01 2.70E-04 1.80E-05107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I 1.60E+05111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I 8.00E+03
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C 3.20E+0096-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C 6.40E+00 2.20E+0184-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I 2.40E+05
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 75 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
101200-48-0 Pesticides express 8.00E-03 I 6.40E+0222224-92-6 Pesticides fenamiphos 2.50E-04 I 2.00E+01
2164-17-2 Pesticides fluometuron 1.30E-02 I 1.00E+03206-44-0 PAHs fluoranthene 4.00E-02 I 3.20E+03 6.30E+02 3.20E+01
86-73-7 PAHs fluorene 4.00E-02 I 3.20E+03 1.00E+02 5.10E+0016984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I 4.80E+0359756-60-4 Pesticides fluridone 8.00E-02 I 6.40E+0356425-91-3 Pesticides flurprimidol 4.00E-02 O 3.20E+0366332-96-5 Pesticides flutolanil 5.00E-01 O 4.00E+0469409-94-5 Pesticides fluvalinate 1.00E-02 I 8.00E+02
133-07-3 Pesticides folpet 9.00E-02 O 7.20E+0372178-02-0 Pesticides fomesafen 2.50E-03 O 2.00E+02
944-22-9 Pesticides fonofos 2.00E-03 I 1.60E+0250-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C 1.60E+04 4.80E+0164-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P 7.20E+04
39148-24-8 Pesticides fosetyl-al 2.50E+00 O 2.00E+05110-00-9 Furans furan 1.00E-03 I 8.00E+01
67-45-8 SVOCs furazolidone 3.80E+00 H 2.60E-0198-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I 2.40E+02
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C 6.70E-0160568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I 3.30E+0177182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O 4.80E+02
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I 3.20E+011071-83-6 SVOCs glyphosate 1.00E-01 I 8.00E+03
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 2.40E+0269806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I 4.00E+0079277-27-3 Pesticides harmony 4.30E-02 O 3.40E+03
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 4.00E+01 2.20E-01 3.80E-02 1.90E-031024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 1.00E+00 1.10E-01 8.00E-02 4.00E-03
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X 2.40E+0187-82-1 SVOCs hexabromobenzene 2.00E-03 I 1.60E+02
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I 1.60E+01118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 6.40E+01 6.30E-01 8.80E-01 4.40E-02
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 8.00E+01 1.30E+01 6.00E-01 3.00E-02319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 6.40E+02 1.60E-01 5.50E-04 2.80E-05319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 5.60E-01 2.30E-03 1.20E-04608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I 5.60E-01
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 4.80E+02 1.90E+02 9.60E+0034465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I 1.60E-04
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 5.60E+01 2.50E+01 4.30E-02 2.30E-0370-30-4 SVOCs hexachlorophene 3.00E-04 I 2.40E+01
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H 4.80E+03 6.90E+01 1.80E+00591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I 4.00E+02
51235-04-2 Pesticides hexazinone 3.30E-02 I 2.60E+03302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I 3.30E-01
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I 3.30E-017647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I 4.80E+017783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P 3.20E+03 1.70E+0135554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O 2.00E+02 1.60E+0181335-37-7 Pesticides imazaquin 2.50E-01 I 2.00E+04
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione 4.00E-02 I 3.20E+03
7439-89-6 Metals iron 7.00E-01 P 5.60E+04
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 76 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
78-83-1 VOCs isobutyl alcohol 3.00E-01 I 2.40E+0478-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 1.60E+04 1.10E+03 2.30E-01 1.50E-02
33820-53-0 Pesticides isopropalin 1.50E-02 I 1.20E+031832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I 8.00E+03
82558-50-7 Pesticides isoxaben 5.00E-02 I 4.00E+0377501-63-4 Pesticides lactofen 8.00E-03 O 6.40E+02
7439-92-1 Metals LEAD LEAD NOTES 2.50E+02 3.00E+03 1.50E+0258-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 1.00E-02 2.40E+01 9.10E-01 6.20E-03 3.30E-04
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O 6.20E+027791-03-9 Perchlorates lithium perchlorate 7.00E-04 I 5.60E+01
83055-99-6 Pesticides londax 2.00E-01 I 1.60E+04121-75-5 Pesticides malathion 2.00E-02 I 1.60E+03108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I 8.00E+03123-33-1 SVOCs maleic hydrazide 5.00E-01 I 4.00E+04109-77-3 VOCs malononitrile 1.00E-04 P 8.00E+00
8018-01-7 Pesticides mancozeb 3.00E-02 H 2.40E+0312427-38-2 Pesticides maneb 5.00E-03 I 4.00E+02
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I 3.70E+03
950-10-7 Pesticides mephosfolan 9.00E-05 H 7.20E+0024307-26-4 Pesticides mepiquat chloride 3.00E-02 I 2.40E+03
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I 2.40E+017439-97-6 Metals mercury 3.00E-04 I 8.57E-05 2.00E+00 2.10E+00 1.00E-01
150-50-5 Pesticides merphos 3.00E-05 I 2.40E+0057837-19-1 Pesticides metalaxyl 6.00E-02 I 4.80E+03
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I 8.00E+0010265-92-6 Pesticides methamidosphos 5.00E-05 I 4.00E+00
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I 1.60E+05950-37-8 Pesticides methidathion 1.50E-03 O 1.20E+02
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I 2.00E+0399-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C 2.00E+0172-43-5 Pesticides methoxychlor 5.00E-03 I 4.00E+02 6.40E+01 3.20E+00
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P 6.40E+02109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P 4.00E+02
79-20-9 VOCs methyl acetate 1.00E+00 X 8.00E+0496-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H 2.40E+0378-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I 4.80E+04
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H 6.40E+0322967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I 8.00E+00
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I 1.10E+0590-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P 5.60E+03 3.40E+0191-57-6 PAHs methyl naphthalene;2- 4.00E-03 I 3.20E+02
298-00-0 Pesticides methyl parathion 2.50E-04 I 2.00E+0125013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H 4.80E+02
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H 5.60E+031634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C 1.00E-01 5.60E+02 1.00E-01 7.20E-03
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I 4.00E+0199-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P 1.60E+03 1.10E+02
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C 7.70E+0095-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P 6.30E+01
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P 1.60E+02 1.00E+01101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I 2.20E+01
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H 8.00E+0275-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 2.00E-02 4.80E+02 9.40E+01 2.10E-02 1.50E-03
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-049016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C 6.30E-0160-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P 8.00E+01
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 77 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
51218-45-2 Pesticides metolachlor 1.50E-01 I 1.20E+0421087-64-9 Pesticides metribuzin 2.50E-02 I 2.00E+03
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 1.60E+01 5.60E-022212-67-1 Pesticides molinate 2.00E-03 I 1.60E+027439-98-7 Metals molybdenum 5.00E-03 I 4.00E+02
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I 8.00E+03300-76-5 Pesticides naled 2.00E-03 I 1.60E+02
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 5.00E+00 1.60E+03 4.50E+00 2.40E-0115299-99-7 Pesticides napropamide 1.20E-01 O 9.60E+03
104-51-8 VOCs n-butylbenzene 5.00E-02 P 4.00E+03E715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C 8.80E+02 1.10E+00
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 1.60E+03 1.30E+02 6.50E+0012035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C 8.80E+02 5.90E-0114797-55-8 Nutrients nitrate 1.60E+00 I 1.30E+0514797-65-0 Nutrients nitrite 1.00E-01 I 8.00E+03
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X 8.00E+02100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P 3.20E+02 5.00E+01
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 1.60E+02 1.00E-01 6.50E-0367-20-9 SVOCs nitrofurantoin 7.00E-02 H 5.60E+0359-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C 7.70E-01
556-88-7 SVOCs nitroguanidine 1.00E-01 I 8.00E+0379-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I 3.60E-0155-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I 6.70E-0362-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 6.40E-01 2.00E-02
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I 1.90E-01621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 1.40E-01 5.60E-05 3.90E-06
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 2.00E+02 5.30E-01 2.80E-02759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C 3.70E-02
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I 4.50E-02684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C 8.30E-03930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I 4.80E-01
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X 8.00E+0088-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P 7.20E+01 4.50E+0099-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P 3.20E+02 6.30E+01
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon 1.50E-02 O 1.20E+0385509-19-9 Pesticides nustar 2.00E-03 O 1.60E+0232536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I 2.40E+02
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I 4.00E+03152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H 1.60E+02
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O 1.10E+04 1.30E+0219666-30-9 Pesticides oxadiazon 5.00E-03 I 4.00E+0223135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I 2.00E+0342874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O 2.40E+03 1.40E+0176738-62-0 Herbicides paclobutrazol 1.30E-02 I 1.00E+03
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I 3.60E+02 5.10E-0156-38-2 Pesticides parathion 6.00E-03 H 4.80E+02
1114-71-2 Pesticides pebulate 5.00E-02 H 4.00E+0340487-42-1 Pesticides pendimethalin 3.00E-01 O 2.40E+04
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H 1.60E+03 4.30E+0160348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I 8.00E+0032534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I 1.60E+02
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I 6.40E+01 4.20E-0182-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H 2.40E+02 3.80E+0087-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 4.00E+02 2.50E+00 1.60E-02 8.80E-04
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I 5.60E+0152645-53-1 Pesticides permethrin 5.00E-02 I 4.00E+03
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 78 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
unavailable19 General Chemistry pH pH NOTES13684-63-4 Pesticides phenmedipham 2.40E-01 O 1.90E+04
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 2.40E+04 1.10E+01 7.60E-01106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H 1.50E+04108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I 4.80E+02
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H 3.20E+02 2.10E+0162-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I 6.40E+0090-43-7 Phenols phenylphenol;2- 1.90E-03 H 5.30E+02
298-02-2 Pesticides phorate 2.00E-04 H 1.60E+0175-44-5 VOCs phosgene 3.00E-04 I 8.57E-05
732-11-6 Pesticides phosmet 2.00E-02 I 1.60E+037803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I 2.40E+017664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P 3.90E+067723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I 1.60E+00
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H 8.00E+0485-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I 1.60E+05
1918-02-1 Herbicides picloram 7.00E-02 I 5.60E+0329232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O 5.60E+0036355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C 5.60E-01 3.30E-02
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 1.00E+00 5.00E-01 1.40E-01151-50-8 Cyanides potassium cyanide 2.00E-03 I 1.60E+02
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I 5.60E+01506-61-6 Cyanides potassium silver cyanide 5.00E-03 I 4.00E+02
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I 7.20E+02 6.70E+0026399-36-0 Pesticides profluralin 6.00E-03 H 4.80E+02
1610-18-0 Pesticides prometon 1.50E-02 I 1.20E+037287-19-6 Pesticides prometryn 4.00E-02 O 3.20E+03
23950-58-5 Pesticides pronamide 7.50E-02 I 6.00E+031918-16-7 Pesticides propachlor 1.30E-02 I 1.00E+03
709-98-8 Pesticides propanil 5.00E-03 I 4.00E+022312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O 3.20E+03 5.30E+00
107-19-7 VOCs propargyl alcohol 2.00E-03 I 1.60E+02139-40-2 Pesticides propazine 2.00E-02 I 1.60E+03122-42-9 Pesticides propham 2.00E-02 I 1.60E+03
60207-90-1 Pesticides propiconazole 1.00E-01 O 8.00E+03123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I 8.00E+01103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X 8.00E+03
57-55-6 Glycols propylene glycol 2.00E+01 P 1.60E+066423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H 5.60E+04107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H 5.60E+04
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I 4.20E+0081335-77-5 Pesticides pursuit 2.50E+00 O 2.00E+0551630-58-1 Pesticides pydrin 2.50E-02 I 2.00E+03
129-00-0 PAHs pyrene 3.00E-02 I 2.40E+03 6.50E+02 3.30E+01110-86-1 VOCs pyridine 1.00E-03 I 8.00E+01
13593-03-8 Pesticides quinalphos 5.00E-04 I 4.00E+0191-22-5 SVOCs quinoline 3.00E+00 I 3.30E-01
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 I 3.20E+02 1.30E+01E715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A
10453-86-8 Pesticides resmethrin 3.00E-02 I 2.40E+03299-84-3 Pesticides ronnel 5.00E-02 H 4.00E+03
83-79-4 Pesticides rotenone 4.00E-03 I 3.20E+0278-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O 8.00E+00
78587-05-0 Pesticides savey 2.50E-02 I 2.00E+03
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 79 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
135-98-8 VOCs sec-butylbenzene 1.00E-01 X 8.00E+037783-00-8 Metal compounds selenious acid 5.00E-03 I 4.00E+027782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 4.00E+02 5.20E+00 2.60E-01
74051-80-2 Pesticides sethoxydim 1.40E-01 O 1.10E+047440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I 4.00E+02 1.40E+01 6.90E-01
506-64-9 Cyanides silver cyanide 1.00E-01 I 8.00E+03122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H 4.00E+02 8.30E+00
26628-22-8 Metal compounds sodium azide 4.00E-03 I 3.20E+02143-33-9 Cyanides sodium cyanide 1.00E-03 I 8.00E+01148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H 2.40E+03 3.70E+00
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I 1.60E+0013718-26-8 Metal compounds sodium metavanadate 1.00E-03 H 8.00E+01
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I 5.60E+017440-24-6 Metals strontium 6.00E-01 I 4.80E+04
57-24-9 SVOCs strychnine 3.00E-04 I 2.40E+01100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I 1.60E+04 2.20E+00 1.20E-01
88671-89-0 Pesticides systhane 2.50E-02 I 2.00E+031746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 9.30E-05 1.30E-05
34014-18-1 Pesticides tebuthiuron 7.00E-02 I 5.60E+033383-96-8 Pesticides temephos 2.00E-02 H 1.60E+035902-51-2 Pesticides terbacil 1.30E-02 I 1.00E+03
13071-79-9 SVOCs terbufos 2.50E-05 H 2.00E+00886-50-0 Pesticides terbutryn 1.00E-03 I 8.00E+01
98-06-6 VOCs tert-butylbenzene 1.00E-01 X 8.00E+035436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I 8.00E+00
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I 2.40E+01630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I 2.40E+03 3.80E+01
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 1.60E+03 5.00E+00 1.20E-03 8.00E-05127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 5.00E-02 4.80E+02 4.80E+02 5.00E-02 2.80E-03
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I 2.40E+03 2.70E-015216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H 4.80E+00 5.00E-02
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H 2.40E+03 4.20E+013689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I 4.00E+01
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I 8.00E-03811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I 7.20E+04
1314-32-5 Metal compounds thallic oxide 2.00E-05 S 1.60E+00563-68-8 Metal compounds thallium acetate 1.00E-05 X 8.00E-01
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X 1.60E+007791-12-0 Metal compounds thallium chloride 1.00E-05 X 8.00E-01
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X 8.00E-0112039-52-0 Metal compounds thallium selenite 1.00E-05 S 8.00E-01
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X 1.60E+007440-28-0 Metals thallium, soluble salts 1.00E-05 X 8.00E-01 2.30E-01 1.10E-02
28249-77-6 Pesticides thiobencarb 1.00E-02 I 8.00E+0221564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H 2.40E+0339196-18-4 Pesticides thiofanox 3.00E-04 H 2.40E+0123564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O 2.20E+03 8.30E+01
137-26-8 Pesticides thiram 1.50E-02 O 1.20E+037440-31-5 Metals tin 6.00E-01 H 4.80E+04
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I 4.00E+01 3.30E+01108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 7.00E+00 6.40E+03 4.50E+00 2.70E-01
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C 2.60E+01584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 2.60E+01
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 2.60E+0195-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X 1.60E+01 5.60E+00
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P 3.20E+02 3.30E+018001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 7.20E+00 9.10E-01 1.50E+00 7.60E-02
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 80 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod A
UnrestrictedLand Use
(Table 740-1)(mg/kg)
SoilMethod BNoncancer(Eq. 740-1)
(mg/kg)
SoilMethod B
Cancer(Eq. 740-2)
(mg/kg)
SoilProtective of Groundwater Vadose @ 13
degrees C(Eq. 747-1)
see guidance(mg/kg)
SoilProtective of Groundwater
Saturated(Eq. 747-1)
see guidance(mg/kg)
93-72-1 Herbicides tp;2,4,5- 8.00E-03 I 6.40E+02unavailable09 Petroleum tph, diesel range organics 2.00E+03unavailable10 Petroleum tph, heavy oils 2.00E+03unavailable11 Petroleum tph, mineral oils 4.00E+03unavailable25 Petroleum tph: gasoline range organics, benzene present 3.00E+01unavailable08 Petroleum tph: gasoline range organics, no detectable benzene 1.00E+02
66841-25-6 Pesticides tralomethrin 7.50E-03 I 6.00E+022303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O 2.00E+03 1.40E+01
82097-50-5 Pesticides triasulfuron 1.00E-02 I 8.00E+02615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I 4.00E+02688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide 3.00E-04 I 2.40E+0110025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I 2.40E+0676-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I 1.60E+03 1.40E+01
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H 3.40E+01634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X 2.40E+00 1.40E+02120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 8.00E+02 3.40E+01 5.60E-01 2.90E-02
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 2.00E+00 1.60E+05 1.50E+00 8.40E-0279-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 3.20E+02 1.80E+01 1.70E-02 1.10E-0379-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 3.00E-02 4.00E+01 1.20E+01 2.50E-02 1.50E-0375-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I 2.40E+0495-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I 8.00E+03 2.90E+01 1.50E+0088-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 8.00E+01 9.10E+01 4.60E-02 2.70E-0393-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I 8.00E+02
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I 4.00E+0296-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M 3.20E+02 6.30E-0396-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X 2.40E+02
58138-08-2 Pesticides tridiphane 3.00E-03 I 2.40E+02121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 I 6.00E+02 1.30E+02unavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P 8.00E+02 5.00E+01526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+02
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+02108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+02
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I 2.40E+03479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P 1.60E+02
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A 1.60E+017440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S 4.00E+02 1.60E+03 8.00E+011314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I 7.20E+021929-77-7 Pesticides vernam 1.00E-03 I 8.00E+01
50471-44-8 Pesticides vinclozolin 1.20E-03 O 9.60E+01108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H 8.00E+04 3.30E+01 2.30E+00
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 2.40E+02 6.70E-01 1.70E-03 8.90E-0581-81-2 Pesticides warfarin 3.00E-04 I 2.40E+01
8012-95-1 Petroleum white mineral oil 3.00E+00 P 2.40E+05108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+04 1.30E+01 7.70E-01
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+04 1.40E+01 8.40E-01106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+04 1.70E+01 9.60E-01
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I 9.00E+00 1.60E+04 1.40E+01 8.30E-017440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I 2.40E+04 6.00E+03 3.00E+02
557-21-1 Cyanides zinc cyanide 5.00E-02 I 4.00E+031314-84-7 Metal compounds zinc phosphide 3.00E-04 I 2.40E+01
12122-67-7 Pesticides zineb 5.00E-02 I 4.00E+03
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 81 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes83-32-9 PAHs acenaphthene
30560-19-1 Pesticides acephate75-07-0 VOCs acetaldehyde
34256-82-1 Pesticides acetochlor67-64-1 VOCs acetone75-86-5 VOCs acetone cyanohydrin75-05-8 VOCs acetonitrile98-86-2 SVOCs acetophenone
62476-59-9 Herbicides acifluorfen, sodium107-02-8 VOCs acrolein
79-06-1 VOCs acrylamide79-10-7 VOCs acrylic acid
107-13-1 VOCs acrylonitrile15972-60-8 Pesticides alachlor
1596-84-5 Pesticides alar116-06-3 Pesticides (Carbamate) aldicarb
1646-88-4 Pesticides (Carbamate) aldicarb sulfone309-00-2 Pesticides aldrin
74223-64-6 Pesticides ally107-18-6 VOCs allyl alcohol107-05-1 VOCs allyl chloride
7429-90-5 Metals aluminum20859-73-8 Metal compounds aluminum phosphide67485-29-4 Pesticides amdro
834-12-8 Pesticides ametryn591-27-5 Phenols aminophenol;m-
33089-61-1 Pesticides amitraz7664-41-7 Nutrients AMMONIA AMMONIA NOTES7790-98-9 Perchlorates ammonium perchlorate7773-06-0 Pesticides ammonium sulfamate
62-53-3 SVOCs aniline120-12-7 PAHs anthracene
7440-36-0 Metals antimony1314-60-9 Metal compounds antimony pentoxide
28300-74-5 Metal compounds antimony potassium tartrate1332-81-6 Metal compounds antimony tetroxide1309-64-4 Metal compounds antimony trioxide
74115-24-5 Pesticides apollo140-57-8 SVOCs aramite
12674-11-2 PCBs aroclor 101611097-69-1 PCBs aroclor 125411096-82-5 PCBs aroclor 1260
7440-38-2 Metals arsenic, inorganic7784-42-1 Gases arsine1332-21-4 Fibers ASBESTOS ASBESTOS NOTE
76578-14-8 Pesticides assure3337-71-1 Pesticides asulam1912-24-9 Pesticides atrazine
65195-55-3 Pesticides avermectin B1103-33-3 Pesticides azobenzene
7440-39-3 Metals barium and compounds114-26-1 Pesticides baygon
43121-43-3 Pesticides bayleton68359-37-5 Pesticides baythroid
1861-40-1 Pesticides benefin17804-35-2 Pesticides benomyl25057-89-0 Herbicides bentazon
100-52-7 SVOCs benzaldehyde
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
4.24E+00 2.42E+02 6.36E-03 2.11E-03 1 4.90E+03 4.90E+00 1 9.60E+02 N1 1
2.15E-03 2 11 1
1.00E+06 1.59E-03 9.68E-04 2 5.75E-01 5.75E-04 1 7.20E+03 N2 1
8.37E-04 2 11.61E-04 2 1
2 13.11E-03 2 1
2 12 1
3.00E+01 2.34E-03 2 11 11 11 11 1
1.80E-01 4.67E+03 6.97E-03 1.60E-03 2 4.87E+04 4.87E+01 1 2.57E-03 C1 12 12 1
0.00E+00 0.00E+00 1 11 11 11 11 11 12 11 11 12 1
4.34E-02 3.00E+01 2.67E-03 7.56E-04 1 2.35E+04 2.35E+01 1 4.80E+03 N1.00E+00 0.00E+00 0.00E+00 1 4.50E+01 4.50E+01 1 6.00E+00 MCL
1 11 11 11 11 11 1
3.12E+04 1 1.07E+05 1.07E+02 1 1.12E+00 N3.12E+04 1 8.10E+05 8.10E+02 1 4.38E-02 C
1 8.22E+05 8.22E+02 1 4.38E-02 C4.40E+01 0.00E+00 0.00E+00 1 2.90E+01 2.90E+01 1 5.00E+00 Background
2 11 11 11 11 11 11 1
0.00E+00 0.00E+00 1 4.10E+01 4.10E+01 1 2.00E+03 MCL1 11 11 12 11 11 1
3.72E-04 2 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 82 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes71-43-2 VOCs BENZENE
108-98-5 SVOCs benzenethiol92-87-5 SVOCs benzidine56-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT98-07-7 VOCs benzotrichloride
100-51-6 SVOCs benzyl alcohol100-44-7 VOCs benzyl chloride
7440-41-7 Metals beryllium91-58-7 PAHs beta-chloronaphthalene
141-66-2 Pesticides bidrin82657-04-3 Pesticides biphenthrin
92-52-4 PAHs biphenyl;1,1-108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether111-44-4 SVOCs bis(2-chloroethyl)ether117-81-7 Phthalates bis(2-ethylhexyl) phthalate542-88-1 VOCs bis(chloromethyl)ether
80-05-7 Phenols bisphenol a7440-42-8 Metals boron
15541-45-4 Pesticides bromate79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene75-27-4 VOCs bromodichloromethane TTHM NOTES
593-60-2 VOCs bromoethene75-25-2 VOCs bromoform TTHM NOTES74-83-9 VOCs bromomethane
2104-96-3 Pesticides bromophos1689-84-5 Pesticides bromoxynil1689-99-2 Pesticides bromoxynil octanoate
106-99-0 VOCs butadiene;1,3-71-36-3 VOCs butanol;n-85-68-7 Phthalates butyl benzyl phthalate
2008-41-5 Pesticides butylate85-70-1 Phthalates butylphthalyl butylglycolate94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)-75-60-5 Pesticides cacodylic acid
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES
592-01-8 Cyanides calcium cyanide105-60-2 SVOCs caprolactam
2425-06-1 Pesticides captafol133-06-2 Pesticides captan
63-25-2 Pesticides (Carbamate) carbaryl1563-66-2 Pesticides (Carbamate) carbofuran
75-15-0 VOCs carbon disulfide56-23-5 VOCs carbon tetrachloride
55285-14-8 Pesticides carbosulfan5234-68-4 Pesticides carboxin1306-38-3 Metals cerium oxide and cerium compounds
302-17-0 VOCs chloral hydrate133-90-4 Herbicides chloramben118-75-2 Pesticides chloranil
12789-03-6 Pesticides chlordane143-50-0 Pesticides chlordecone (kepone)
16887-00-6 Nutrients chloride
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1.75E+03 5.20E+00 2.28E-01 1.33E-01 2 6.17E+01 6.17E-02 1 5.00E+00 MCL2 1
8.75E+01 1 19.40E-03 3.00E+01 1.37E-04 2.79E-05 1 3.58E+05 3.58E+02 11.62E-03 3.00E+01 4.63E-05 6.39E-06 1 9.69E+05 9.69E+02 1 2.00E-01 MCL1.50E-03 3.00E+01 4.55E-03 7.73E-04 1 1.23E+06 1.23E+03 18.00E-04 3.00E+01 3.40E-05 5.13E-06 1 1.23E+06 1.23E+03 13.50E+03 6.31E-05 4.88E-06 1 6.00E-01 6.00E-04 1 6.40E+04 N
2 12 1
8.25E-03 2 11.90E+01 0.00E+00 0.00E+00 1 7.90E+02 7.90E+02 1 4.00E+00 MCL2.02E+02 2 1
1 11 1
4.73E-03 2 12.47E+00 2 1
1.72E+04 6.90E+00 7.38E-04 2.93E-04 2 7.59E+01 7.59E-02 1 3.98E-02 C3.40E-01 1.30E+02 4.18E-06 6.56E-07 1 1.11E+05 1.11E+02 1 6.00E+00 MCL
2 11 1
0.00E+00 0.00E+00 1 11 11 1
4.46E+02 1.01E-01 4.33E-02 2 2.34E+02 2.34E-01 1 6.40E+01 N6.74E+03 3.75E+00 6.56E-02 3.69E-02 2 5.50E+01 5.50E-02 1 7.06E+00 MCL C ADJ
2 13.10E+03 3.75E+00 2.19E-02 1.16E-02 2 1.26E+02 1.26E-01 1 5.54E+01 MCL C ADJ1.52E+04 3.75E+00 2.56E-01 1.78E-01 2 9.00E+00 9.00E-03 1 1.12E+01 N
1 11 11 1
2.17E+00 2 17.40E+04 3.61E-04 1.55E-04 2 6.92E+00 6.92E-03 1 8.00E+02 N2.69E+00 4.14E+02 5.17E-05 1.11E-05 1 1.37E+04 1.37E+01 1 4.61E+01 C
2 11 11 11 1
6.40E+01 0.00E+00 0.00E+00 1 6.70E+00 6.70E+00 1 5.00E+00 MCL6.40E+01 0.00E+00 0.00E+00 1 1
1 11 11 11 11 11 1
1.19E+03 1.24E+00 8.03E-01 2 4.57E+01 4.57E-02 1 8.00E+02 N7.93E+02 1.88E+01 1.25E+00 7.42E-01 2 1.52E+02 1.52E-01 1 5.00E+00 MCL
1 11 11 12 11 11 1
5.60E-02 1.41E+04 1.99E-03 5.15E-04 1 5.13E+04 5.13E+01 1 2.00E+00 MCL1 11 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 83 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes90982-32-4 Pesticides chlorimuron-ethyl
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS506-77-4 Cyanides chlorine cyanide
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS7758-19-2 Nutrients chlorite
75-68-3 VOCs chloro-1,1-difluoroethane;1-126-99-8 VOCs chloro-1,3-butadiene;2-
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4-95-69-2 SVOCs chloro-2-methylaniline;4-79-11-8 SVOCs chloroacetic acid
532-27-4 SVOCs chloroacetophenone;2-106-47-8 SVOCs chloroaniline;p-108-90-7 VOCs chlorobenzene510-15-6 Pesticides chlorobenzilate
74-11-3 Pesticides chlorobenzoic acid;p-98-56-6 VOCs chlorobenzotrifluoride;4-
109-69-3 VOCs chlorobutane;1-59-50-7 Phenols chlorocresol75-45-6 VOCs chlorodifluoromethane67-66-3 VOCs chloroform TTHM NOTES74-87-3 VOCs chloromethane
107-30-2 VOCs chloromethyl methyl ether88-73-3 Pesticides chloronitrobenzene;o-
100-00-5 Pesticides chloronitrobenzene;p-95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT
1897-45-6 Pesticides chlorothalonil95-49-8 VOCs chlorotoluene;o-
101-21-3 Pesticides chlorpropham2921-88-2 Pesticides chlorpyrifos5598-13-0 Pesticides chlorpyrifos-methyl
64902-72-3 Pesticides chlorsulfuron60238-56-4 Pesticides chlorthiophos
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt
E649830 VOCs coke oven emissions7440-50-8 Metals COPPER HARDNESS - DEPENDENT
544-92-3 Cyanides copper cyanide108-39-4 Phenols cresol;m-
95-48-7 Phenols cresol;o-106-44-5 Phenols cresol;p-123-73-9 VOCs crotonaldehyde
98-82-8 VOCs cumene21725-46-2 Pesticides cyanazine
57-12-5 Cyanides CYANIDE CYANIDE NOTES460-19-5 Cyanides cyanogen506-68-3 Cyanides cyanogen bromide110-82-7 VOCs cyclohexane108-94-1 VOCs cyclohexanone108-91-8 VOCs cyclohexylamine
68085-85-8 Pesticides cyhalothrin/karate52315-07-8 Pesticides cypermethrin66215-27-8 Pesticides cyromazine
1861-32-1 Herbicides dacthal75-99-0 Herbicides dalapon, sodium salt
39515-41-8 Pesticides danitol
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 12 12 12 11 12 1
2.75E-01 2 11 11 11 11 1
5.30E+03 1.36E-05 4.85E-06 2 6.61E+01 6.61E-02 1 2.19E-01 C4.72E+02 1.03E+01 1.52E-01 7.87E-02 2 2.24E+02 2.24E-01 1 1.00E+02 MCL
1 11 12 1
4.06E-01 2 11 1
8.61E-01 2 17.92E+03 3.75E+00 1.50E-01 9.15E-02 2 5.25E+01 5.25E-02 1 1.41E+01 MCL C ADJ
3.75E+00 2.68E-01 2 6.00E+00 6.00E-03 12 11 12 1
2.20E+04 1.34E+02 1.60E-02 7.25E-03 2 3.88E+02 3.88E-01 1 4.00E+01 N1 12 11 11 11 11 11 11 1
1.60E+01 0.00E+00 0.00E+00 1 1.00E+03 1.00E+03 1 2.40E+04 N1.60E+01 0.00E+00 0.00E+00 1 1.90E+01 1.90E+01 1 4.80E+01 N
1.60E-03 3.00E+01 3.88E-03 7.13E-04 1 3.98E+05 3.98E+02 10.00E+00 0.00E+00 1 4.50E+01 4.50E+01 1 4.80E+00 N
2 13.60E+01 0.00E+00 0.00E+00 1 2.20E+01 2.20E+01 1 6.40E+02 N
1 12 1
2.60E+04 4.92E-05 1.95E-05 2 9.12E+01 9.12E-02 1 4.00E+02 N2 1
4.37E-04 2 12.55E-01 2 1
1 11.00E+00 1 1
2 12 11 12 12 11 11 11 11 12 11 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 84 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes94-82-6 Pesticides db;2,4-72-54-8 Pesticides ddd72-55-9 Pesticides dde50-29-3 Pesticides ddt
1163-19-5 PBDEs decabromodiphenyl ether8065-48-3 Pesticides demeton
103-23-1 Phthalates di(2-ethylhexyl)adipate2303-16-4 Pesticides diallate
333-41-5 Pesticides diazinon53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran96-12-8 Pesticides dibromo-3-chloropropane;1,2-
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4-124-48-1 VOCs dibromochloromethane TTHM NOTES
84-74-2 Phthalates di-butyl phthalate1918-00-9 Herbicides dicamba3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4-79-43-6 SVOCs dichloroacetic acid95-50-1 VOCs dichlorobenzene;1,2-
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4-
91-94-1 SVOCs dichlorobenzidine;3,3'-75-71-8 VOCs dichlorodifluoromethane75-34-3 VOCs dichloroethane;1,1-
107-06-2 VOCs dichloroethane;1,2-540-59-0 VOCs dichloroethylene,1,2- (mixed isomers)
75-35-4 VOCs dichloroethylene;1,1-156-59-2 VOCs dichloroethylene;1,2-,cis156-60-5 VOCs dichloroethylene;1,2-,trans120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4-78-87-5 VOCs dichloropropane;1,2-
616-23-9 SVOCs dichloropropanol;2,3-542-75-6 VOCs dichloropropene;1,3-
62-73-7 Pesticides dichlorvos77-73-6 VOCs dicyclopentadiene60-57-1 Pesticides dieldrin84-66-2 Phthalates diethyl phthalate
112-34-5 Glycols diethylene glycol monobutyl ether111-90-0 Glycols diethylene glycol monoethyl ether617-84-5 SVOCs diethylformamide
56-53-1 SVOCs diethylstilbesterol43222-48-6 Pesticides difenzoquat35367-38-5 Pesticides diflubenzuron
75-37-6 VOCs difluoroethane;1,1-1445-75-6 VOCs diisopropyl methylphosphonate
55290-64-7 Pesticides dimethipin60-51-5 Pesticides dimethoate
119-90-4 SVOCs dimethoxybenzidine;3,3'-131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4-95-68-1 SVOCs dimethylaniline;2,4-
121-69-7 VOCs dimethylaniline;N,N-119-93-7 SVOCs dimethylbenzidine;3,3'-
68-12-2 VOCs dimethylformamide;N,N-
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 19.00E-02 5.36E+04 1.64E-04 2.89E-05 1 4.58E+04 4.58E+01 1 3.65E-01 C1.20E-01 5.36E+04 8.61E-04 1.87E-04 1 8.64E+04 8.64E+01 1 2.57E-01 C2.50E-02 5.36E+04 3.32E-04 3.83E-05 1 6.78E+05 6.78E+02 1 2.57E-01 C
3.20E+00 1 11 11 11 11 1
2.49E-03 3.00E+01 6.03E-07 6.03E-07 1 1.79E+06 1.79E+03 11.71E-04 1 1
2 11 12 1
2.60E+03 3.75E+00 3.21E-02 2.06E-02 2 6.31E+01 6.31E-02 1 5.21E+00 MCL C ADJ1.12E+01 8.90E+01 3.85E-08 8.16E-09 1 1.57E+03 1.57E+00 1 1.60E+03 N
1 11 12 11 1
1.56E+02 5.56E+01 7.79E-02 3.54E-02 2 3.79E+02 3.79E-01 1 6.00E+02 MCL5.98E-02 2 1
7.38E+01 5.56E+01 9.96E-02 4.61E-02 2 6.16E+02 6.16E-01 1 7.50E+01 MCL3.11E+00 3.12E+02 1.64E-07 2.23E-08 1 7.24E+02 7.24E-01 1 1.94E-01 C
8.10E+00 2 15.06E+03 2.30E-01 1.41E-01 2 5.34E+01 5.34E-02 1 7.68E+00 C8.52E+03 1.20E+00 4.01E-02 2.28E-02 2 3.80E+01 3.80E-02 1 4.81E+00 MCL C ADJ
2 12.25E+03 5.60E+00 1.07E+00 7.06E-01 2 6.50E+01 6.50E-02 1 7.00E+00 MCL3.50E+03 1.67E-01 1.00E-01 2 3.55E+01 3.55E-02 1 1.60E+01 N6.30E+03 1.58E+00 3.85E-01 2.41E-01 2 3.80E+01 3.80E-02 1 1.00E+02 MCL4.50E+03 4.07E+01 1.30E-04 3.43E-05 2 1.47E+02 1.47E-01 1 2.40E+01 N
1 12.80E+03 4.11E+00 1.15E-01 6.47E-02 2 4.70E+01 4.70E-02 1 5.00E+00 MCL
2 12.80E+03 1.91E+00 7.26E-01 3.96E-01 2 2.71E+01 2.71E-02 1 4.38E-01 C
2 12 1
1.95E-01 4.67E+03 6.19E-04 1.13E-04 1 2.55E+04 2.55E+01 1 5.47E-03 C1.08E+03 7.30E+01 1.85E-05 4.70E-06 1 8.22E+01 8.22E-02 1 1.28E+04 N
2 12 11 11 11 11 12 12 11 11 11 1
3.60E+01 1 12 11 12 12 11 12 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 85 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes57-14-7 VOCs dimethylhydrazine;1,1-
540-73-8 VOCs dimethylhydrazine;1,2-105-67-9 Phenols dimethylphenol;2,4-576-26-1 Phenols dimethylphenol;2,6-
95-65-8 Phenols dimethylphenol;3,4-99-65-0 Explosives dinitrobenzene;m-
528-29-0 SVOCs dinitrobenzene;o-100-25-4 SVOCs dinitrobenzene;p-131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6-
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6-121-14-2 Explosives dinitrotoluene;2,4-606-20-2 Explosives dinitrotoluene;2,6-117-84-0 Phthalates di-n-octyl phthalate
88-85-7 Herbicides dinoseb123-91-1 VOCs dioxane;1,4-957-51-7 Pesticides diphenamid122-39-4 Pesticides diphenylamine122-66-7 SVOCs diphenylhydrazine;1,2-
85-00-7 Pesticides diquat1937-37-7 Dyes direct black 382602-46-2 Dyes direct blue 6
16071-86-6 Dyes direct brown 95298-04-4 Pesticides disulfoton505-29-3 SVOCs dithiane;1,4-330-54-1 Pesticides (Carbamate) diuron534-52-1 Phenols DNOC
2439-10-3 Pesticides dodine115-29-7 Pesticides endosulfan
1031-07-8 Pesticides endosulfan sulfate959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall
72-20-8 Pesticides endrin7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin106-88-7 VOCs epoxybutane
16672-87-0 Pesticides ethephon563-12-2 Pesticides ethion111-15-9 VOCs ethoxyethanol acetate;2-110-80-5 VOCs ethoxyethanol;2-141-78-6 VOCs ethyl acetate140-88-5 VOCs ethyl acrylate
75-00-3 VOCs ethyl chloride759-94-4 Pesticides ethyl dipropylthiocarbamate;S-
60-29-7 VOCs ethyl ether97-63-2 VOCs ethyl methacrylate
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate100-41-4 VOCs ethylbenzene109-78-4 SVOCs ethylene cyanohydrin107-15-3 VOCs ethylene diamine106-93-4 VOCs ethylene dibromide (EDB)107-21-1 VOCs ethylene glycol111-76-2 Glycols ethylene glycol monobutyl ether (EGBE)
75-21-8 VOCs ethylene oxide96-45-7 SVOCs ethylene thiourea84-72-0 Phthalates ethylphthalyl ethylglycolate
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
2 12 1
7.87E+03 9.38E+01 8.20E-05 3.02E-05 2 2.09E+02 2.09E-01 1 1.60E+02 N2 12 11 11 11 11 1
2.79E+03 1.50E+00 1.82E-05 1.48E-06 1 1.00E-02 1.00E-05 1 3.20E+01 N1 11 1
2.70E+02 3.80E+00 3.80E-06 1.02E-06 1 9.55E+01 9.55E-02 1 2.82E-01 C1.82E+02 3.06E-05 8.83E-06 1 6.92E+01 6.92E-02 1 5.83E-02 C2.00E-02 2.74E-03 5.20E-04 1 8.32E+07 8.32E+04 1 1.60E+02 N
1 12 11 1
3.00E+01 1 12.49E+01 1 1
1 11 11 11 11 11 11 11 11 1
5.10E-01 2.70E+02 4.59E-04 1.14E-04 1 2.04E+03 2.04E+00 1 9.60E+01 N1 11 11 11 1
2.50E-01 3.97E+03 3.08E-04 6.63E-05 1 1.08E+04 1.08E+01 1 2.00E+00 MCL1 12 12 11 11 12 12 1
3.19E-03 2 12 1
2.47E-01 2 12 1
8.76E-01 2 11.42E-02 2 1
1 11.69E+02 3.75E+01 3.23E-01 1.62E-01 2 2.04E+02 2.04E-01 1 7.00E+02 MCL
2 12 1
1.54E-02 2 6.60E+01 6.60E-02 1 5.00E-02 MCL2 12 1
1.54E-02 2 11 11 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 86 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes101200-48-0 Pesticides express
22224-92-6 Pesticides fenamiphos2164-17-2 Pesticides fluometuron
206-44-0 PAHs fluoranthene86-73-7 PAHs fluorene
16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES59756-60-4 Pesticides fluridone56425-91-3 Pesticides flurprimidol66332-96-5 Pesticides flutolanil69409-94-5 Pesticides fluvalinate
133-07-3 Pesticides folpet72178-02-0 Pesticides fomesafen
944-22-9 Pesticides fonofos50-00-0 VOCs formaldehyde64-18-6 VOCs formic acid
39148-24-8 Pesticides fosetyl-al110-00-9 Furans furan
67-45-8 SVOCs furazolidone98-01-1 VOCs furfural
531-82-8 SVOCs furium60568-05-0 Pesticides furmecyclox77182-82-2 Pesticides glufosinate-ammonium
765-34-4 VOCs glycidaldehyde1071-83-6 SVOCs glyphosate
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion69806-40-2 Pesticides haloxyfop-methyl79277-27-3 Pesticides harmony
76-44-8 Pesticides heptachlor1024-57-3 Pesticides heptachlor epoxide
142-82-5 VOCs heptane;n-87-82-1 SVOCs hexabromobenzene
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'-118-74-1 Pesticides hexachlorobenzene
87-68-3 VOCs hexachlorobutadiene319-84-6 Pesticides hexachlorocyclohexane;alpha319-85-7 Pesticides hexachlorocyclohexane;beta-608-73-1 SVOCs hexachlorocyclohexane;technical
77-47-4 Pesticides hexachlorocyclopentadiene34465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture
67-72-1 VOCs hexachloroethane70-30-4 SVOCs hexachlorophene
822-06-0 VOCs hexamethylene diisocyanate;1,6-110-54-3 VOCs hexane;n-591-78-6 VOCs hexanone;2-
51235-04-2 Pesticides hexazinone302-01-2 VOCs hydrazine
10034-93-2 SVOCs hydrazine sulfate7647-01-0 VOCs hydrogen chloride
74-90-8 Cyanides hydrogen cyanide7783-06-4 VOCs hydrogen sulfide
123-31-9 SVOCs hydroquinone35554-44-0 Pesticides imazalil81335-37-7 Pesticides imazaquin
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione
7439-89-6 Metals iron
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 11 11 1
2.06E-01 1.15E+03 6.60E-04 1.66E-04 1 4.91E+04 4.91E+01 1 6.40E+02 N1.98E+00 3.00E+01 2.61E-03 8.58E-04 1 7.71E+03 7.71E+00 1 6.40E+02 N
1 11 11 11 11 11 11 11 12 12 11 1
1.43E-01 2 11 12 11 11 11 12 11 11 11 11 11 11 1
1.80E-01 1.12E+04 4.47E-02 1.27E-02 1 9.53E+03 9.53E+00 1 1.94E-01 MCL C ADJ2.00E-01 1.12E+04 3.90E-04 8.01E-05 2 8.32E+04 8.32E+01 1 4.81E-02 MCL C ADJ
2 11 11 1
6.20E+00 8.69E+03 5.41E-02 1.36E-02 1 8.00E+04 8.00E+01 1 5.47E-01 MCL C ADJ3.23E+00 2.78E+00 3.34E-01 1.41E-01 2 5.37E+04 5.37E+01 1 5.61E-01 C2.00E+00 1.30E+02 4.35E-04 1.02E-04 1 1.76E+03 1.76E+00 1 1.39E-02 C2.40E-01 1.30E+02 3.05E-05 4.81E-06 1 2.14E+03 2.14E+00 1 4.86E-02 C
1 11.80E+00 4.34E+00 1.11E+00 4.18E-01 2 2.00E+05 2.00E+02 1 4.80E+01 N
1 15.00E+01 8.69E+01 1.59E-01 7.24E-02 2 1.78E+03 1.78E+00 1 1.09E+00 C
1 12 1
9.50E+00 7.40E+01 4.11E+01 2 3.41E+03 3.41E+00 1 4.80E+02 N2 11 12 11 12 1
3.47E-03 2 12 11 11 11 1
2.20E-05 3.00E+01 6.56E-05 8.40E-06 1 3.47E+06 3.47E+03 11 1
0.00E+00 0.00E+00 1 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 87 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes78-83-1 VOCs isobutyl alcohol78-59-1 SVOCs isophorone
33820-53-0 Pesticides isopropalin1832-54-8 SVOCs isopropyl methyl phosphonic acid
82558-50-7 Pesticides isoxaben77501-63-4 Pesticides lactofen
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane
330-55-2 Pesticides (Carbamate) linuron7791-03-9 Perchlorates lithium perchlorate
83055-99-6 Pesticides londax121-75-5 Pesticides malathion108-31-6 SVOCs maleic anhydride123-33-1 SVOCs maleic hydrazide109-77-3 VOCs malononitrile
8018-01-7 Pesticides mancozeb12427-38-2 Pesticides maneb
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES
950-10-7 Pesticides mephosfolan24307-26-4 Pesticides mepiquat chloride
7487-94-7 Metal compounds mercuric chloride7439-97-6 Metals mercury
150-50-5 Pesticides merphos57837-19-1 Pesticides metalaxyl
126-98-7 VOCs methacrylonitrile10265-92-6 Pesticides methamidosphos
67-56-1 VOCs methanol950-37-8 Pesticides methidathion
16752-77-5 Pesticides (Carbamate) methomyl99-59-2 SVOCs methoxy-5-nitroaniline;2-72-43-5 Pesticides methoxychlor
110-49-6 VOCs methoxyethanol acetate;2-109-86-4 VOCs methoxyethanol;2-
79-20-9 VOCs methyl acetate96-33-3 VOCs methyl acrylate78-93-3 VOCs methyl ethyl ketone
108-10-1 VOCs methyl isobutyl ketone22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES
80-62-6 VOCs methyl methacrylate90-12-0 PAHs methyl naphthalene;1-91-57-6 PAHs methyl naphthalene;2-
298-00-0 Pesticides methyl parathion25013-15-4 VOCs methyl styrene
98-83-9 VOCs methyl styrene, alpha1634-04-4 VOCs methyl tert-butyl ether
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2-99-55-8 SVOCs methyl-5-nitroaniline;2-
636-21-5 SVOCs methylaniline hydrochloride;2-95-53-4 VOCs methylaniline;2-
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'-101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'-
74-95-3 VOCs methylene bromide75-09-2 VOCs methylene chloride
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI)9016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI)
101-77-9 SVOCs methylenebisbenzenamine;4,4-60-34-4 VOCs methylhydrazine
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1.98E-04 2 11.20E+04 4.38E+00 2.72E-04 1.10E-04 2 4.68E+01 4.68E-02 1 4.61E+01 C
1 11 11 11 1
0.00E+00 0.00E+00 1 1.00E+04 1.00E+04 1 1.50E+01 MCL6.80E+00 1.30E+02 5.74E-04 1.34E-04 1 1.35E+03 1.35E+00 1 2.00E-01 MCL
1 11 11 11 12 11 12 11 11 1
0.00E+00 0.00E+00 10.00E+00 0.00E+00 1 1
1 11 11 1
4.70E-01 1.65E-01 1 5.20E+01 5.20E+01 1 2.00E+00 MCL1 11 1
5.70E-03 2 11 12 11 11 11 1
4.50E-02 1.55E+03 6.48E-04 1.18E-04 1 8.00E+04 8.00E+01 1 4.00E+01 MCL2 12 1
2.88E-03 2 14.30E-03 2 11.31E-03 2 12.92E-03 2 1
1 16.90E-03 2 16.32E-03 2 16.99E-03 2 1
1 12 12 1
5.00E+04 1.80E-02 1.59E-02 2 1.09E+01 1.09E-02 1 2.43E+01 C1 11 11 12 11 11 1
1.96E-02 2 11.30E+04 9.00E-01 8.98E-02 5.67E-02 2 1.00E+01 1.00E-02 1 5.00E+00 MCL
1 11 11 12 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 88 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes51218-45-2 Pesticides metolachlor21087-64-9 Pesticides metribuzin
2385-85-5 Pesticides mirex2212-67-1 Pesticides molinate7439-98-7 Metals molybdenum
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS300-76-5 Pesticides naled
91-20-3 PAHs naphthalene15299-99-7 Pesticides napropamide
104-51-8 VOCs n-butylbenzeneE715532 Metals nickel refinery dust
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT12035-72-2 Metal compounds nickel subsulfide14797-55-8 Nutrients nitrate14797-65-0 Nutrients nitrite
88-74-4 SVOCs nitroaniline, 2-100-01-6 SVOCs nitroaniline, 4-
98-95-3 Explosives nitrobenzene67-20-9 SVOCs nitrofurantoin59-87-0 SVOCs nitrofurazone
556-88-7 SVOCs nitroguanidine79-46-9 VOCs nitropropane;2-
1116-54-7 SVOCs nitrosodiethanolamine;N-55-18-5 SVOCs nitrosodiethylamine;N-62-75-9 SVOCs nitrosodimethylamine;N-
924-16-3 VOCs nitroso-di-n-butylamine;N-621-64-7 SVOCs nitroso-di-n-propylamine;N-
86-30-6 SVOCs nitrosodiphenylamine;N-759-73-9 SVOCs nitroso-n-ethylurea;n-
10595-95-6 SVOCs nitroso-N-methylethylamine;N-684-93-5 SVOCs nitroso-n-methylurea,n-930-55-2 SVOCs nitrosopyrrolidine;N-
99-08-1 Explosives nitrotoluene, m-88-72-2 Explosives nitrotoluene, o-99-99-0 Explosives nitrotoluene, p-
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon85509-19-9 Pesticides nustar32536-52-0 PBDEs octabromodiphenyl ether
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine152-16-9 SVOCs octamethylpyrophosphoramide
19044-88-3 Pesticides oryzalin19666-30-9 Pesticides oxadiazon23135-22-0 Pesticides (Carbamate) oxamyl42874-03-3 Pesticides oxyfluorfen76738-62-0 Herbicides paclobutrazol
1910-42-5 Pesticides Paraquat Dichloride56-38-2 Pesticides parathion
1114-71-2 Pesticides pebulate40487-42-1 Pesticides pendimethalin
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5-60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5-32534-81-9 PBDEs pentabromodiphenyl ethers
608-93-5 SVOCs pentachlorobenzene82-68-8 Pesticides pentachloronitrobenzene87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT
14797-73-0 Perchlorates perchlorate and perchlorate salts52645-53-1 Pesticides permethrin
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 11 11 11 1
0.00E+00 0.00E+00 1 11 11 1
3.10E+01 1.05E+01 1.98E-02 8.24E-03 2 1.19E+03 1.19E+00 1 1.60E+02 N1 1
2.42E-01 2 10.00E+00 0.00E+00 1 1
4.70E+01 0.00E+00 0.00E+00 1 6.50E+01 6.50E+01 1 1.00E+02 MCL1 11 11 11 11 1
2.09E+03 2.89E+00 9.84E-04 3.96E-04 2 1.19E+02 1.19E-01 1 1.60E+01 N1 11 11 1
2.60E-03 2 11 12 1
2.60E-02 2 12 1
9.89E+03 1.13E+00 9.23E-05 5.44E-05 1 2.40E+01 2.40E-02 1 1.25E-02 C3.51E+01 1.36E+02 2.05E-04 1.02E-04 1 1.29E+03 1.29E+00 1 1.79E+01 C
1 11 11 12 12 1
1.73E-04 2 12 11 11 11 1
3.20E+00 1 11 11 11 11 11 11 11 11 6.78E+03 6.78E+00 1 7.20E+01 N1 12 11 11 1
8.10E+03 1 11 11 3.21E+04 3.21E+01 1 1.28E+01 N1 1
1.95E+03 1.10E+01 1.00E-06 2.10E-07 1 5.92E+02 5.92E-01 1 1.00E+00 MCL1 11 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 89 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notesunavailable19 General Chemistry pH pH NOTES
13684-63-4 Pesticides phenmedipham108-95-2 Phenols phenol106-50-3 SVOCs phenylenediamine, p-108-45-2 SVOCs phenylenediamine;m-
95-54-5 SVOCs phenylenediamine;o-62-38-4 Metals (organometallic) phenylmercuric acetate90-43-7 Phenols phenylphenol;2-
298-02-2 Pesticides phorate75-44-5 VOCs phosgene
732-11-6 Pesticides phosmet7803-51-2 Gases phosphine7664-38-2 SVOCs phosphoric acid7723-14-0 Nonmetal inorganics phosphorus
100-21-0 Phthalates phthalic acid;p-85-44-9 Phthalates phthalic anhydride
1918-02-1 Herbicides picloram29232-93-7 Pesticides pirimiphos-methyl36355-01-8 PBBs polybrominated biphenyls
1336-36-3 PCBs polychlorinated biphenyls (PCBs)151-50-8 Cyanides potassium cyanide
7778-74-7 Perchlorates potassium perchlorate506-61-6 Cyanides potassium silver cyanide
67747-09-5 Pesticides prochloraz (not in HSDB)26399-36-0 Pesticides profluralin
1610-18-0 Pesticides prometon7287-19-6 Pesticides prometryn
23950-58-5 Pesticides pronamide1918-16-7 Pesticides propachlor
709-98-8 Pesticides propanil2312-35-8 Pesticides propargite
107-19-7 VOCs propargyl alcohol139-40-2 Pesticides propazine122-42-9 Pesticides propham
60207-90-1 Pesticides propiconazole123-38-6 VOCs propionaldehyde
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2-103-65-1 VOCs propylbenzene;n-
57-55-6 Glycols propylene glycol6423-43-4 Glycols propylene glycol dinitrate;1,2-
52125-53-8 Glycols propylene glycol monoethyl ether107-98-2 Glycols propylene glycol monomethyl ether
75-56-9 VOCs propylene oxide81335-77-5 Pesticides pursuit51630-58-1 Pesticides pydrin
129-00-0 PAHs pyrene110-86-1 VOCs pyridine
13593-03-8 Pesticides quinalphos91-22-5 SVOCs quinoline
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdxE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE
10453-86-8 Pesticides resmethrin299-84-3 Pesticides ronnel
83-79-4 Pesticides rotenone78-48-8 Pesticides s,s;s-tributylphosphorotrithioate
78587-05-0 Pesticides savey
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 11 1
8.28E+04 1.40E+00 1.63E-05 6.49E-06 2 2.88E+01 2.88E-02 1 2.40E+03 N1 11 11 11 11 11 12 11 12 12 12 11 11 11 11 11 1
7.00E-01 3.12E+04 1 3.09E+05 3.09E+02 1 4.38E-01 MCL C ADJ1 11 11 11 11 11 11 11 11 11 12 12 11 11 11 12 11 1
2.03E-01 2 12 12 12 12 12 11 11 1
1.35E-01 3.00E+01 4.51E-04 1.08E-04 1 6.80E+04 6.80E+01 1 4.80E+02 N2 11 12 1
0.00E+00 0.00E+00 1 10.00E+00 0.00E+00 1 1
1 11 11 11 11 11 11 1
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 90 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes135-98-8 VOCs sec-butylbenzene
7783-00-8 Metal compounds selenious acid7782-49-2 Metals selenium and compounds
74051-80-2 Pesticides sethoxydim7440-22-4 Metals SILVER HARDNESS - DEPENDENT
506-64-9 Cyanides silver cyanide122-34-9 Pesticides simazine
26628-22-8 Metal compounds sodium azide143-33-9 Cyanides sodium cyanide148-18-5 Metals (organometallic) sodium diethyldithiocarbamate
62-74-8 Metals (organometallic) sodium fluoroacetate13718-26-8 Metal compounds sodium metavanadate
7601-89-0 Perchlorates sodium perchlorate7440-24-6 Metals strontium
57-24-9 SVOCs strychnine100-42-5 VOCs styrene
88671-89-0 Pesticides systhane1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES
34014-18-1 Pesticides tebuthiuron3383-96-8 Pesticides temephos5902-51-2 Pesticides terbacil
13071-79-9 SVOCs terbufos886-50-0 Pesticides terbutryn
98-06-6 VOCs tert-butylbenzene5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4'
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5-630-20-6 VOCs tetrachloroethane;1,1,1,2-
79-34-5 VOCs tetrachloroethane;1,1,2,2-127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,-
961-11-5 Pesticides tetrachlorvinphos3689-24-5 Pesticides tetraethyl dithiopyrophosphate
78-00-2 Metals (organometallic) tetraethyl lead811-97-2 VOCs tetrafluoroethane;1,1,1,2-109-99-9 Furans tetrahydrofuran
1314-32-5 Metal compounds thallic oxide563-68-8 Metal compounds thallium acetate
6533-73-9 Metal compounds thallium carbonate7791-12-0 Metal compounds thallium chloride
10102-45-1 Metal compounds thallium nitrate12039-52-0 Metal compounds thallium selenite
7446-18-6 Metal compounds thallium(I) sulfate7440-28-0 Metals thallium, soluble salts
28249-77-6 Pesticides thiobencarb21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2-39196-18-4 Pesticides thiofanox23564-05-8 Pesticides thiophanate-methyl
137-26-8 Pesticides thiram7440-31-5 Metals tin
118-96-7 Explosives tnt108-88-3 VOCs toluene
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6-584-84-9 VOCs toluene-2,4-diisocyanate
91-08-7 VOCs toluene-2,6-diisocyanate95-70-5 SVOCs toluenediamine;2,5-
106-49-0 SVOCs toluidine;p-8001-35-2 Pesticides toxaphene
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
2.65E-01 2 11 1
4.80E+00 0.00E+00 0.00E+00 1 5.00E+00 5.00E+00 1 5.00E+01 MCL1 1
5.00E-01 0.00E+00 0.00E+00 1 8.30E+00 8.30E+00 1 8.00E+01 N1 11 12 11 11 11 11 11 1
0.00E+00 0.00E+00 1 11 1
3.10E+02 1.13E-01 5.59E-02 2 9.12E+02 9.12E-01 1 1.00E+02 MCL1 1
5.00E+03 1 0.61 11 11 11 11 1
2.58E-01 2 11 11 1
4.59E-02 2 12.97E+03 5.00E+00 1.41E-02 6.96E-03 2 7.90E+01 7.90E-02 1 2.19E-01 C2.00E+02 3.10E+01 7.54E-01 3.98E-01 2 2.65E+02 2.65E-01 1 5.00E+00 MCL
1 2.80E+02 2.80E-01 1 4.80E+02 N1 11 11 12 12 12 11 11 11 11 11 11 11 1
1.16E+02 0.00E+00 0.00E+00 1 7.10E+01 7.10E+01 1 1.60E-01 N1 11 11 11 12 1
0.00E+00 0.00E+00 1 11 1
5.26E+02 1.07E+01 2.72E-01 1.48E-01 2 1.40E+02 1.40E-01 1 6.40E+02 N2 12 12 11 12 1
7.40E-01 1.31E+04 2.46E-04 5.16E-05 1 9.58E+04 9.58E+01 1 7.95E-01 MCL C ADJ
Washington State Department of Ecology - CLARC Soil Unrestricted Land Use Table (Methods A, B, Groundwater Protection, and Chemical Parameters) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 91 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes93-72-1 Herbicides tp;2,4,5-
unavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin2303-17-5 Pesticides triallate
82097-50-5 Pesticides triasulfuron615-54-3 VOCs tribromobenzene;1,2,4-688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2-76-03-9 SVOCs trichloroacetic acid
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6-634-93-5 SVOCs trichloroaniline;2,4,6-120-82-1 VOCs trichlorobenzene;1,2,4-
71-55-6 VOCs trichloroethane;1,1,1-79-00-5 VOCs trichloroethane;1,1,2-79-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES75-69-4 VOCs trichlorofluoromethane95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5-
598-77-6 VOCs trichloropropane;1,1,2-96-18-4 VOCs trichloropropane;1,2,3-96-19-5 VOCs trichloropropene;1,2,3-
58138-08-2 Pesticides tridiphane121-44-8 VOCs triethylamine
1582-09-8 Pesticides trifluralinunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate526-73-8 VOCs trimethylbenzene;1,2,3-
95-63-6 VOCs trimethylbenzene;1,2,4-108-67-8 VOCs trimethylbenzene;1,3,5-
99-35-4 Explosives trinitrobenzene;1,3,5-479-45-8 Explosives trinitrophenylmethylnitramine
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS7440-62-2 Metals vanadium1314-62-1 Metal compounds vanadium pentoxide1929-77-7 Pesticides vernam
50471-44-8 Pesticides vinclozolin108-05-4 VOCs vinyl acetate
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES81-81-2 Pesticides warfarin
8012-95-1 Petroleum white mineral oil108-38-3 VOCs xylene;m-
95-47-6 VOCs xylene;o-106-42-3 VOCs xylene;p-
1330-20-7 VOCs xylenes7440-66-6 Metals ZINC HARDNESS - DEPENDENT
557-21-1 Cyanides zinc cyanide1314-84-7 Metal compounds zinc phosphide
12122-67-7 Pesticides zineb
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
GroundWater
Target Cleanup Level for Soil
to Ground WaterPathway
see guidance(µg/L)
GroundWater
TargetCriterion
see guidance
1 11 11 11 11 11 11 11 11 11 11 11 11 1
1.25E+01 2 11 11 11 1
3.00E+02 1.14E+02 5.82E-02 2.37E-02 2 1.66E+03 1.66E+00 1 1.51E+01 MCL C ADJ1.33E+03 5.60E+00 7.05E-01 4.19E-01 2 1.35E+02 1.35E-01 1 2.00E+02 MCL4.42E+03 4.50E+00 3.74E-02 1.97E-02 2 7.50E+01 7.50E-02 1 3.00E+00 MCLG1.10E+03 1.10E+01 4.22E-01 2.39E-01 2 9.43E+01 9.43E-02 1 4.00E+00 N
2.67E+00 2 11.20E+03 1.78E-04 6.53E-05 2 1.60E+03 1.60E+00 1 8.00E+02 N8.00E+02 1.50E+02 3.19E-04 1.07E-04 2 3.81E+02 3.81E-01 1 3.98E+00 C
1 12 1
7.94E-03 2 12 11 12 11 12 12 12 1
1.15E-01 2 11.10E-01 2 1
1 12 1
0.00E+00 0.00E+00 1 10.00E+00 0.00E+00 1 1.00E+03 1.00E+03 1 8.00E+01 N
1 12 11 1
2.00E+04 2.10E-02 1.17E-02 2 5.25E+00 5.25E-03 1 8.00E+03 N2.76E+03 1.17E+00 1.11E+00 8.07E-01 2 1.86E+01 1.86E-02 1 2.92E-01 MCL C ADJ
2 11 1
1.61E+02 3.01E-01 1.51E-01 2 1.96E+02 1.96E-01 1 1.60E+03 N1.78E+02 2.13E-01 1.06E-01 2 2.41E+02 2.41E-01 1 1.60E+03 N1.85E+02 3.14E-01 1.58E-01 2 3.11E+02 3.11E-01 1 1.60E+03 N1.71E+02 2.79E-01 1.38E-01 2 2.33E+02 2.33E-01 1 1.60E+03 N
4.70E+01 0.00E+00 0.00E+00 1 6.20E+01 6.20E+01 1 4.80E+03 N1 11 11 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 92 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
83-32-9 PAHs acenaphthene 6.00E-02 I 2.10E+05 130560-19-1 Pesticides acephate 1.20E-03 O 4.20E+03 1
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-03 134256-82-1 Pesticides acetochlor 2.00E-02 I 7.00E+04 1
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I 3.20E+06 175-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-04 175-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-02 198-86-2 SVOCs acetophenone 1.00E-01 I 3.50E+05 1
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I 4.60E+04 1107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 1.80E+03 1
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M 7.00E+03 2.60E+02 179-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I 1.80E+06 1
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 1.40E+05 2.40E+02 115972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C 3.50E+04 2.30E+03 1
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C 5.30E+05 7.30E+03 1116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I 3.50E+03 1
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I 3.50E+03 1309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 1.10E+02 7.70E+00 1
74223-64-6 Pesticides ally 2.50E-01 I 8.80E+05 1107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I 1.80E+04 1107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C 6.30E+03 1
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P 3.50E+06 120859-73-8 Metal compounds aluminum phosphide 4.00E-04 I 1.40E+03 167485-29-4 Pesticides amdro 1.70E-02 O 6.00E+04 1
834-12-8 Pesticides ametryn 9.00E-03 I 3.20E+04 1591-27-5 Phenols aminophenol;m- 8.00E-02 P 2.80E+05 1
33089-61-1 Pesticides amitraz 2.50E-03 I 8.80E+03 17664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-01 17790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I 2.50E+03 17773-06-0 Pesticides ammonium sulfamate 2.00E-01 I 7.00E+05 1
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I 2.50E+04 2.30E+04 1120-12-7 PAHs anthracene 3.00E-01 I 1.10E+06 1
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 1.40E+03 11314-60-9 Metal compounds antimony pentoxide 5.00E-04 H 1.80E+03 1
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H 3.20E+03 11332-81-6 Metal compounds antimony tetroxide 4.00E-04 H 1.40E+03 11309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05 1
74115-24-5 Pesticides apollo 1.30E-02 I 4.60E+04 1140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I 1.80E+05 5.30E+03 1
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 2.50E+02 1.90E+03 111097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 7.00E+01 6.60E+01 111096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S 6.60E+01 1
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 2.00E+01 1.10E+03 8.80E+01 17784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C 1.20E+01 11332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I 1
76578-14-8 Pesticides assure 9.00E-03 I 3.20E+04 13337-71-1 Pesticides asulam 3.60E-02 O 1.30E+05 11912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C 1.20E+05 5.70E+02 1
65195-55-3 Pesticides avermectin B1 4.00E-04 I 1.40E+03 1103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I 1.20E+03 1
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I 7.00E+05 1114-26-1 Pesticides baygon 4.00E-03 I 1.40E+04 1
43121-43-3 Pesticides bayleton 3.40E-02 O 1.20E+05 168359-37-5 Pesticides baythroid 2.50E-02 I 8.80E+04 1
1861-40-1 Pesticides benefin 5.00E-03 O 1.80E+04 117804-35-2 Pesticides benomyl 5.00E-02 I 1.80E+05 125057-89-0 Herbicides bentazon 3.00E-02 I 1.10E+05 1
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P 3.50E+05 3.30E+04 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 93 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
71-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 3.00E-02 1.40E+04 2.40E+03 1108-98-5 SVOCs benzenethiol 1.00E-03 P 3.50E+03 1
92-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 1.10E+04 5.70E-01 156-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES 150-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 2.00E+00 1.10E+03 1.30E+02 1
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES 1207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES 1
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I 1.40E+07 198-07-7 VOCs benzotrichloride 1.30E+01 I 1.00E+01 1
100-51-6 SVOCs benzyl alcohol 1.00E-01 P 3.50E+05 1100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I 7.00E+03 7.70E+02 1
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 7.00E+03 191-58-7 PAHs beta-chloronaphthalene 8.00E-02 I 2.80E+05 1
141-66-2 Pesticides bidrin 3.00E-05 O 1.10E+02 182657-04-3 Pesticides biphenthrin 1.50E-02 I 5.30E+04 1
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I 1.80E+06 1.60E+04 1108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 1.40E+05 1.90E+03 1111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 1.20E+02 1117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 7.00E+04 9.40E+03 1542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I 6.00E-01 1
80-05-7 Phenols bisphenol a 5.00E-02 I 1.80E+05 17440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I 7.00E+05 1
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I 1.40E+04 1.90E+02 179-08-3 SVOCs bromoacetic acid 1
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I 2.80E+04 175-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 7.00E+04 2.10E+03 1
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-01 175-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 7.00E+04 1.70E+04 174-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 4.90E+03 1
2104-96-3 Pesticides bromophos 5.00E-03 H 1.80E+04 11689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O 5.30E+04 1.30E+03 11689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O 5.30E+04 1.30E+03 1
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C 2.20E+02 171-36-3 VOCs butanol;n- 1.00E-01 I 3.50E+05 185-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P 7.00E+05 6.90E+04 1
2008-41-5 Pesticides butylate 5.00E-02 I 1.80E+05 185-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I 3.50E+06 194-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O 1.50E+04 175-60-5 Pesticides cacodylic acid 2.00E-02 A 7.00E+04 1
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I 17440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 2.00E+00 3.50E+03 1
592-01-8 Cyanides calcium cyanide 1.00E-03 I 3.50E+03 1105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I 1.80E+06 1
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C 7.00E+03 8.80E+02 1133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C 4.60E+05 5.70E+04 1
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I 3.50E+05 11563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I 1.80E+04 1
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I 3.50E+05 156-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 1.40E+04 1.90E+03 1
55285-14-8 Pesticides carbosulfan 1.00E-02 I 3.50E+04 15234-68-4 Pesticides carboxin 1.00E-01 I 3.50E+05 11306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04 1
302-17-0 VOCs chloral hydrate 1.00E-01 I 3.50E+05 1133-90-4 Herbicides chloramben 1.50E-02 I 5.30E+04 1118-75-2 Pesticides chloranil 4.00E-01 H 3.30E+02 1
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 1.80E+03 3.80E+02 1143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I 1.10E+03 1.30E+01 1
16887-00-6 Nutrients chloride 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 94 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
90982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O 3.20E+05 17782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 3.50E+05 1
506-77-4 Cyanides chlorine cyanide 5.00E-02 I 1.80E+05 110049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I 1.10E+05 1
7758-19-2 Nutrients chlorite 3.00E-02 I 1.10E+05 175-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01 1
126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H 7.00E+04 13165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H 2.90E+02 1
95-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P 1.10E+04 1.30E+03 179-11-8 SVOCs chloroacetic acid 2.00E-03 H 7.00E+03 1
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06 1106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P 1.40E+04 6.60E+02 1108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 7.00E+04 1510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C 7.00E+04 1.20E+03 1
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X 1.10E+05 198-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P 1.10E+04 1
109-69-3 VOCs chlorobutane;1- 4.00E-02 P 1.40E+05 159-50-7 Phenols chlorocresol 1.00E-01 A 3.50E+05 175-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+01 167-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 3.50E+04 4.20E+03 174-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02 1
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C 5.50E+01 188-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P 1.10E+04 4.40E+02 1
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P 2.50E+03 2.20E+03 195-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I 1.80E+04 1
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C 5.30E+04 7.70E+03 195-49-8 VOCs chlorotoluene;o- 2.00E-02 I 7.00E+04 1
101-21-3 Pesticides chlorpropham 5.00E-02 O 1.80E+05 12921-88-2 Pesticides chlorpyrifos 1.00E-03 A 3.50E+03 15598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H 3.50E+04 1
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O 1.80E+05 160238-56-4 Pesticides chlorthiophos 8.00E-04 H 2.80E+03 1
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES 116065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I 2.00E+03 5.30E+06 118540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 1.90E+01 1.10E+04 1
218-01-9 cPAHs CHRYSENE PAH NOTES 17440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P 1.10E+03 1
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+00 17440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H 1.40E+05 1
544-92-3 Cyanides copper cyanide 5.00E-03 I 1.80E+04 1108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I 1.80E+05 1
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I 1.80E+05 1106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A 3.50E+05 1123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H 3.50E+03 6.90E+01 1
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I 3.50E+05 121725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H 7.00E+03 1.60E+02 1
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 2.20E+03 1460-19-5 Cyanides cyanogen 1.00E-03 I 3.50E+03 1506-68-3 Cyanides cyanogen bromide 9.00E-02 I 3.20E+05 1110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00 1108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I 1.80E+07 1108-91-8 VOCs cyclohexylamine 2.00E-01 I 7.00E+05 1
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O 3.50E+03 152315-07-8 Pesticides cypermethrin 2.30E-02 O 8.10E+04 166215-27-8 Pesticides cyromazine 5.00E-01 O 1.80E+06 1
1861-32-1 Herbicides dacthal 1.00E-02 I 3.50E+04 175-99-0 Herbicides dalapon, sodium salt 3.00E-02 I 1.10E+05 1
39515-41-8 Pesticides danitol 2.50E-02 I 8.80E+04 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 95 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
94-82-6 Pesticides db;2,4- 3.00E-02 O 1.10E+05 172-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 1.10E+02 5.50E+02 172-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 1.10E+03 3.90E+02 150-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 4.00E+00 1.80E+03 3.90E+02 1
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I 2.50E+04 1.90E+05 18065-48-3 Pesticides demeton 4.00E-05 I 1.40E+02 1
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I 2.10E+06 1.10E+05 12303-16-4 Pesticides diallate 6.10E-02 H 2.20E+03 1
333-41-5 Pesticides diazinon 7.00E-04 A 2.50E+03 153-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES 1
132-64-9 PAHs dibenzofuran 1.00E-03 X 3.50E+03 196-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P 7.00E+02 1.60E+02 1
631-64-1 SVOCs dibromoacetic acid 1106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I 3.50E+04 1124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I 7.00E+04 1.60E+03 1
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I 3.50E+05 11918-00-9 Herbicides dicamba 3.00E-02 I 1.10E+05 13400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS 1
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+01 179-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I 1.40E+04 2.60E+03 195-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 3.20E+05 1
541-73-1 VOCs dichlorobenzene;1,3- 1106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 2.50E+05 2.40E+04 1
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 2.90E+02 175-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I 7.00E+05 175-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C 7.00E+05 2.30E+04 1
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 2.10E+04 1.40E+03 1540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H 3.20E+04 1
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 1.80E+05 1156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I 7.00E+03 1156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I 7.00E+04 1120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I 1.10E+04 1
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I 3.50E+04 178-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 1.40E+05 3.50E+03 1
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I 1.10E+04 1542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 1.10E+05 1.30E+03 1
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I 1.80E+03 4.50E+02 177-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P 2.80E+05 160-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 1.80E+02 8.20E+00 184-66-2 Phthalates diethyl phthalate 8.00E-01 I 2.80E+06 1
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P 1.10E+05 1111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P 2.10E+05 1617-84-5 SVOCs diethylformamide 1.00E-03 P 3.50E+03 1
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C 3.80E-01 143222-48-6 Pesticides difenzoquat 8.30E-02 O 2.90E+05 135367-38-5 Pesticides diflubenzuron 2.00E-02 I 7.00E+04 1
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+01 11445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I 2.80E+05 1
55290-64-7 Pesticides dimethipin 2.20E-02 O 7.70E+04 160-51-5 Pesticides dimethoate 2.20E-03 O 7.70E+03 1
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P 8.20E+01 1131-11-3 Phthalates dimethyl phthalate 1120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I 3.50E+05 1
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H 2.30E+02 195-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P 7.00E+03 6.60E+02 1
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P 7.00E+03 4.90E+03 1119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P 1.20E+01 1
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P 3.50E+05 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 96 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
57-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X 3.50E+02 1540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C 2.40E-01 1105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I 7.00E+04 1576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I 2.10E+03 1
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I 3.50E+03 199-65-0 Explosives dinitrobenzene;m- 1.00E-04 I 3.50E+02 1
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P 3.50E+02 1100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P 3.50E+02 1131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I 7.00E+03 1
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I 7.00E+03 125550-58-7 Phenols dinitrophenols 1
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I 3.20E+03 1.90E+02 1121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 7.00E+03 4.20E+02 1606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P 1.10E+03 8.80E+01 1117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P 3.50E+04 1
88-85-7 Herbicides dinoseb 1.00E-03 I 3.50E+03 1123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I 1.10E+05 1.30E+03 1957-51-7 Pesticides diphenamid 3.00E-02 I 1.10E+05 1122-39-4 Pesticides diphenylamine 1.00E-01 O 3.50E+05 1122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 1.60E+02 1
85-00-7 Pesticides diquat 2.20E-03 I 7.70E+03 11937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C 1.80E+01 12602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C 1.80E+01 1
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C 2.00E+01 1298-04-4 Pesticides disulfoton 4.00E-05 I 1.40E+02 1505-29-3 SVOCs dithiane;1,4- 1.00E-02 I 3.50E+04 1330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I 7.00E+03 1534-52-1 Phenols DNOC 8.00E-05 X 2.80E+02 1
2439-10-3 Pesticides dodine 2.00E-02 O 7.00E+04 1115-29-7 Pesticides endosulfan 6.00E-03 I 2.10E+04 1
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P 2.10E+04 1959-98-8 Pesticides endosulfan;alpha 1
33213-65-9 Pesticides endosulfan;beta 1145-73-3 Herbicides endothall 2.00E-02 I 7.00E+04 1
72-20-8 Pesticides endrin 3.00E-04 I 1.10E+03 17421-93-4 Pesticides endrin aldehyde 1
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I 2.10E+04 1.30E+04 1106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03 1
16672-87-0 Pesticides ethephon 5.00E-03 I 1.80E+04 1563-12-2 Pesticides ethion 5.00E-04 I 1.80E+03 1111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P 3.50E+05 1110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P 3.20E+05 1141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I 3.20E+06 1140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H 1.80E+04 2.70E+03 1
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00 1759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O 1.80E+05 1
60-29-7 VOCs ethyl ether 2.00E-01 I 7.00E+05 197-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H 3.20E+05 1
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I 3.50E+01 1100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 6.00E+00 3.50E+05 1109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P 2.50E+05 1107-15-3 VOCs ethylene diamine 9.00E-02 P 3.20E+05 1106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I 5.00E-03 3.20E+04 6.60E+01 1107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I 7.00E+06 1111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I 3.50E+05 1
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C 4.20E+02 196-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C 2.80E+02 2.90E+03 184-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I 1.10E+07 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 97 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
101200-48-0 Pesticides express 8.00E-03 I 2.80E+04 122224-92-6 Pesticides fenamiphos 2.50E-04 I 8.80E+02 1
2164-17-2 Pesticides fluometuron 1.30E-02 I 4.60E+04 1206-44-0 PAHs fluoranthene 4.00E-02 I 1.40E+05 1
86-73-7 PAHs fluorene 4.00E-02 I 1.40E+05 116984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I 2.10E+05 159756-60-4 Pesticides fluridone 8.00E-02 I 2.80E+05 156425-91-3 Pesticides flurprimidol 4.00E-02 O 1.40E+05 166332-96-5 Pesticides flutolanil 5.00E-01 O 1.80E+06 169409-94-5 Pesticides fluvalinate 1.00E-02 I 3.50E+04 1
133-07-3 Pesticides folpet 9.00E-02 O 3.20E+05 172178-02-0 Pesticides fomesafen 2.50E-03 O 8.80E+03 1
944-22-9 Pesticides fonofos 2.00E-03 I 7.00E+03 150-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C 7.00E+05 6.30E+03 164-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P 3.20E+06 1
39148-24-8 Pesticides fosetyl-al 2.50E+00 O 8.80E+06 1110-00-9 Furans furan 1.00E-03 I 3.50E+03 1
67-45-8 SVOCs furazolidone 3.80E+00 H 3.50E+01 198-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I 1.10E+04 1
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C 8.80E+01 160568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I 4.40E+03 177182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O 2.10E+04 1
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I 1.40E+03 11071-83-6 SVOCs glyphosate 1.00E-01 I 3.50E+05 1
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTE 1unavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE 1
86-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 1.10E+04 169806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I 1.80E+02 179277-27-3 Pesticides harmony 4.30E-02 O 1.50E+05 1
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 1.80E+03 2.90E+01 11024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 4.60E+01 1.40E+01 1
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X 1.10E+03 187-82-1 SVOCs hexabromobenzene 2.00E-03 I 7.00E+03 1
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I 7.00E+02 1118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 2.80E+03 8.20E+01 1
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 3.50E+03 1.70E+03 1319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 2.80E+04 2.10E+01 1319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 7.30E+01 1608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I 7.30E+01 1
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 2.10E+04 134465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I 2.10E-02 1
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 2.50E+03 3.30E+03 170-30-4 SVOCs hexachlorophene 3.00E-04 I 1.10E+03 1
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06 1110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H 2.10E+05 1591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I 1.80E+04 1
51235-04-2 Pesticides hexazinone 3.30E-02 I 1.20E+05 1302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I 4.40E+01 1
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I 4.40E+01 17647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03 1
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I 2.10E+03 17783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04 1
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P 1.40E+05 2.20E+03 135554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O 8.80E+03 2.20E+03 181335-37-7 Pesticides imazaquin 2.50E-01 I 8.80E+05 1
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES 136734-19-7 Pesticides iprodione 4.00E-02 I 1.40E+05 1
7439-89-6 Metals iron 7.00E-01 P 2.50E+06 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 98 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
78-83-1 VOCs isobutyl alcohol 3.00E-01 I 1.10E+06 178-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 7.00E+05 1.40E+05 1
33820-53-0 Pesticides isopropalin 1.50E-02 I 5.30E+04 11832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I 3.50E+05 1
82558-50-7 Pesticides isoxaben 5.00E-02 I 1.80E+05 177501-63-4 Pesticides lactofen 8.00E-03 O 2.80E+04 1
7439-92-1 Metals LEAD LEAD NOTES 1.00E+03 158-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 1.00E-02 1.10E+03 1.20E+02 1
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O 2.70E+04 17791-03-9 Perchlorates lithium perchlorate 7.00E-04 I 2.50E+03 1
83055-99-6 Pesticides londax 2.00E-01 I 7.00E+05 1121-75-5 Pesticides malathion 2.00E-02 I 7.00E+04 1108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I 3.50E+05 1123-33-1 SVOCs maleic hydrazide 5.00E-01 I 1.80E+06 1109-77-3 VOCs malononitrile 1.00E-04 P 3.50E+02 1
8018-01-7 Pesticides mancozeb 3.00E-02 H 1.10E+05 112427-38-2 Pesticides maneb 5.00E-03 I 1.80E+04 1
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I 17439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I 1.60E+05 1
950-10-7 Pesticides mephosfolan 9.00E-05 H 3.20E+02 124307-26-4 Pesticides mepiquat chloride 3.00E-02 I 1.10E+05 1
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I 1.10E+03 17439-97-6 Metals mercury 3.00E-04 I 8.57E-05 2.00E+00 1
150-50-5 Pesticides merphos 3.00E-05 I 1.10E+02 157837-19-1 Pesticides metalaxyl 6.00E-02 I 2.10E+05 1
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I 3.50E+02 110265-92-6 Pesticides methamidosphos 5.00E-05 I 1.80E+02 1
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I 7.00E+06 1950-37-8 Pesticides methidathion 1.50E-03 O 5.30E+03 1
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I 8.80E+04 199-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C 2.70E+03 172-43-5 Pesticides methoxychlor 5.00E-03 I 1.80E+04 1
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P 2.80E+04 1109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P 1.80E+04 1
79-20-9 VOCs methyl acetate 1.00E+00 X 3.50E+06 196-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H 1.10E+05 178-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I 2.10E+06 1
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H 2.80E+05 122967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I 3.50E+02 1
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I 4.90E+06 190-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P 2.50E+05 4.50E+03 191-57-6 PAHs methyl naphthalene;2- 4.00E-03 I 1.40E+04 1
298-00-0 Pesticides methyl parathion 2.50E-04 I 8.80E+02 125013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H 2.10E+04 1
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H 2.50E+05 11634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C 1.00E-01 7.30E+04 1
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I 1.80E+03 199-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P 7.00E+04 1.50E+04 1
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C 1.00E+03 195-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P 8.20E+03 1
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P 7.00E+03 1.30E+03 1101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I 2.90E+03 1
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H 3.50E+04 175-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 2.00E-02 2.10E+04 6.60E+04 1
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-04 19016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04 1
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C 8.20E+01 160-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P 3.50E+03 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 99 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
51218-45-2 Pesticides metolachlor 1.50E-01 I 5.30E+05 121087-64-9 Pesticides metribuzin 2.50E-02 I 8.80E+04 1
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 7.00E+02 7.30E+00 12212-67-1 Pesticides molinate 2.00E-03 I 7.00E+03 17439-98-7 Metals molybdenum 5.00E-03 I 1.80E+04 1
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I 3.50E+05 1300-76-5 Pesticides naled 2.00E-03 I 7.00E+03 1
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 5.00E+00 7.00E+04 115299-99-7 Pesticides napropamide 1.20E-01 O 4.20E+05 1
104-51-8 VOCs n-butylbenzene 5.00E-02 P 1.80E+05 1E715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C 3.90E+04 1.40E+02 1
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 7.00E+04 112035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C 3.90E+04 7.70E+01 114797-55-8 Nutrients nitrate 1.60E+00 I 5.60E+06 114797-65-0 Nutrients nitrite 1.00E-01 I 3.50E+05 1
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X 3.50E+04 1100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P 1.40E+04 6.60E+03 1
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 7.00E+03 167-20-9 SVOCs nitrofurantoin 7.00E-02 H 2.50E+05 159-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C 1.00E+02 1
556-88-7 SVOCs nitroguanidine 1.00E-01 I 3.50E+05 179-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00 1
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I 4.70E+01 155-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I 8.80E-01 162-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 2.80E+01 2.60E+00 1
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I 2.40E+01 1621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 1.90E+01 1
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 2.70E+04 1759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C 4.90E+00 1
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I 6.00E+00 1684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C 1.10E+00 1930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I 6.30E+01 1
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X 3.50E+02 188-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P 3.20E+03 6.00E+02 199-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P 1.40E+04 8.20E+03 1
84852-15-3 Phenols nonylphenol 127314-13-2 Pesticides norflurazon 1.50E-02 O 5.30E+04 185509-19-9 Pesticides nustar 2.00E-03 O 7.00E+03 132536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I 1.10E+04 1
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I 1.80E+05 1152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H 7.00E+03 1
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O 4.90E+05 1.70E+04 119666-30-9 Pesticides oxadiazon 5.00E-03 I 1.80E+04 123135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I 8.80E+04 142874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O 1.10E+05 1.80E+03 176738-62-0 Herbicides paclobutrazol 1.30E-02 I 4.60E+04 1
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I 1.60E+04 156-38-2 Pesticides parathion 6.00E-03 H 2.10E+04 1
1114-71-2 Pesticides pebulate 5.00E-02 H 1.80E+05 140487-42-1 Pesticides pendimethalin 3.00E-01 O 1.10E+06 1
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H 7.00E+04 5.70E+03 160348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I 3.50E+02 132534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I 7.00E+03 1
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I 2.80E+03 182-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H 1.10E+04 5.00E+02 187-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 1.80E+04 3.30E+02 1
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I 2.50E+03 152645-53-1 Pesticides permethrin 5.00E-02 I 1.80E+05 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 100 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
unavailable19 General Chemistry pH pH NOTES 113684-63-4 Pesticides phenmedipham 2.40E-01 O 8.40E+05 1
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 1.10E+06 1106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H 6.70E+05 1108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I 2.10E+04 1
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H 1.40E+04 2.80E+03 162-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I 2.80E+02 190-43-7 Phenols phenylphenol;2- 1.90E-03 H 6.90E+04 1
298-02-2 Pesticides phorate 2.00E-04 H 7.00E+02 175-44-5 VOCs phosgene 3.00E-04 I 8.57E-05 1
732-11-6 Pesticides phosmet 2.00E-02 I 7.00E+04 17803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I 1.10E+03 17664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P 1.70E+08 17723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I 7.00E+01 1
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H 3.50E+06 185-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I 7.00E+06 1
1918-02-1 Herbicides picloram 7.00E-02 I 2.50E+05 129232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O 2.50E+02 136355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C 2.50E+01 4.40E+00 1
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 1.00E+01 6.60E+01 1151-50-8 Cyanides potassium cyanide 2.00E-03 I 7.00E+03 1
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I 2.50E+03 1506-61-6 Cyanides potassium silver cyanide 5.00E-03 I 1.80E+04 1
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I 3.20E+04 8.80E+02 126399-36-0 Pesticides profluralin 6.00E-03 H 2.10E+04 1
1610-18-0 Pesticides prometon 1.50E-02 I 5.30E+04 17287-19-6 Pesticides prometryn 4.00E-02 O 1.40E+05 1
23950-58-5 Pesticides pronamide 7.50E-02 I 2.60E+05 11918-16-7 Pesticides propachlor 1.30E-02 I 4.60E+04 1
709-98-8 Pesticides propanil 5.00E-03 I 1.80E+04 12312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O 1.40E+05 6.90E+02 1
107-19-7 VOCs propargyl alcohol 2.00E-03 I 7.00E+03 1139-40-2 Pesticides propazine 2.00E-02 I 7.00E+04 1122-42-9 Pesticides propham 2.00E-02 I 7.00E+04 1
60207-90-1 Pesticides propiconazole 1.00E-01 O 3.50E+05 1123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03 1
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I 3.50E+03 1103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X 3.50E+05 1
57-55-6 Glycols propylene glycol 2.00E+01 P 7.00E+07 16423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05 1
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H 2.50E+06 1107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H 2.50E+06 1
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I 5.50E+02 181335-77-5 Pesticides pursuit 2.50E+00 O 8.80E+06 151630-58-1 Pesticides pydrin 2.50E-02 I 8.80E+04 1
129-00-0 PAHs pyrene 3.00E-02 I 1.10E+05 1110-86-1 VOCs pyridine 1.00E-03 I 3.50E+03 1
13593-03-8 Pesticides quinalphos 5.00E-04 I 1.80E+03 191-22-5 SVOCs quinoline 3.00E+00 I 4.40E+01 1
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTE 1unavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES 1
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 I 1.40E+04 1.60E+03 1E715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A 1
10453-86-8 Pesticides resmethrin 3.00E-02 I 1.10E+05 1299-84-3 Pesticides ronnel 5.00E-02 H 1.80E+05 1
83-79-4 Pesticides rotenone 4.00E-03 I 1.40E+04 178-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O 3.50E+02 1
78587-05-0 Pesticides savey 2.50E-02 I 8.80E+04 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 101 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
135-98-8 VOCs sec-butylbenzene 1.00E-01 X 3.50E+05 17783-00-8 Metal compounds selenious acid 5.00E-03 I 1.80E+04 17782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 1.80E+04 1
74051-80-2 Pesticides sethoxydim 1.40E-01 O 4.90E+05 17440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I 1.80E+04 1
506-64-9 Cyanides silver cyanide 1.00E-01 I 3.50E+05 1122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H 1.80E+04 1.10E+03 1
26628-22-8 Metal compounds sodium azide 4.00E-03 I 1.40E+04 1143-33-9 Cyanides sodium cyanide 1.00E-03 I 3.50E+03 1148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H 1.10E+05 4.90E+02 1
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I 7.00E+01 113718-26-8 Metal compounds sodium metavanadate 1.00E-03 H 3.50E+03 1
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I 2.50E+03 17440-24-6 Metals strontium 6.00E-01 I 2.10E+06 1
57-24-9 SVOCs strychnine 3.00E-04 I 1.10E+03 1100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I 7.00E+05 1
88671-89-0 Pesticides systhane 2.50E-02 I 8.80E+04 11746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 4.10E-03 1.70E-03 0.6
34014-18-1 Pesticides tebuthiuron 7.00E-02 I 2.50E+05 13383-96-8 Pesticides temephos 2.00E-02 H 7.00E+04 15902-51-2 Pesticides terbacil 1.30E-02 I 4.60E+04 1
13071-79-9 SVOCs terbufos 2.50E-05 H 8.80E+01 1886-50-0 Pesticides terbutryn 1.00E-03 I 3.50E+03 1
98-06-6 VOCs tert-butylbenzene 1.00E-01 X 3.50E+05 15436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I 3.50E+02 1
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I 1.10E+03 1630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I 1.10E+05 5.00E+03 1
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 7.00E+04 6.60E+02 1127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 5.00E-02 2.10E+04 6.30E+04 1
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I 1.10E+05 15216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H 2.10E+02 6.60E+00 1
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H 1.10E+05 5.50E+03 13689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I 1.80E+03 1
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I 3.50E-01 1811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01 1109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I 3.20E+06 1
1314-32-5 Metal compounds thallic oxide 2.00E-05 S 7.00E+01 1563-68-8 Metal compounds thallium acetate 1.00E-05 X 3.50E+01 1
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X 7.00E+01 17791-12-0 Metal compounds thallium chloride 1.00E-05 X 3.50E+01 1
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X 3.50E+01 112039-52-0 Metal compounds thallium selenite 1.00E-05 S 3.50E+01 1
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X 7.00E+01 17440-28-0 Metals thallium, soluble salts 1.00E-05 X 3.50E+01 1
28249-77-6 Pesticides thiobencarb 1.00E-02 I 3.50E+04 121564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H 1.10E+05 139196-18-4 Pesticides thiofanox 3.00E-04 H 1.10E+03 123564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O 9.50E+04 1.10E+04 1
137-26-8 Pesticides thiram 1.50E-02 O 5.30E+04 17440-31-5 Metals tin 6.00E-01 H 2.10E+06 1
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I 1.80E+03 4.40E+03 1108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 7.00E+00 2.80E+05 1
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C 3.40E+03 1584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 3.40E+03 1
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 3.40E+03 195-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X 7.00E+02 7.30E+02 1
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P 1.40E+04 4.40E+03 18001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 3.20E+02 1.20E+02 1
Washington State Department of Ecology - CLARC Soil Industrial Land Use Table (Methods A and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 102 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SoilMethod AIndustrialProperties
(Table 745-1)(mg/kg)
SoilMethod CNoncancer(Eq. 745-1)
(mg/kg)
SoilMethod C
Cancer(Eq. 745-2)
(mg/kg)
AB1GI
Absorption
Fraction(unitless)
93-72-1 Herbicides tp;2,4,5- 8.00E-03 I 2.80E+04 1unavailable09 Petroleum tph, diesel range organics 2.00E+03 1unavailable10 Petroleum tph, heavy oils 2.00E+03 1unavailable11 Petroleum tph, mineral oils 4.00E+03 1unavailable25 Petroleum tph: gasoline range organics, benzene present 3.00E+01 1unavailable08 Petroleum tph: gasoline range organics, no detectable benzene 1.00E+02 1
66841-25-6 Pesticides tralomethrin 7.50E-03 I 2.60E+04 12303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O 8.80E+04 1.80E+03 1
82097-50-5 Pesticides triasulfuron 1.00E-02 I 3.50E+04 1615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I 1.80E+04 1688-73-3 Organotins tributyltin 1
56-35-9 Organotins tributyltin oxide 3.00E-04 I 1.10E+03 110025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS 1
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I 1.10E+08 176-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I 7.00E+04 1.90E+03 1
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H 4.50E+03 1634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X 1.10E+02 1.90E+04 1120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 3.50E+04 4.50E+03 1
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 2.00E+00 7.00E+06 179-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 1.40E+04 2.30E+03 179-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 3.00E-02 1.80E+03 2.90E+03 175-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I 1.10E+06 195-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I 3.50E+05 188-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 3.50E+03 1.20E+04 193-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I 3.50E+04 1
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I 1.80E+04 196-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M 1.40E+04 4.40E+00 196-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X 1.10E+04 1
58138-08-2 Pesticides tridiphane 3.00E-03 I 1.10E+04 1121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03 1
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 I 2.60E+04 1.70E+04 1unavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES 1
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P 3.50E+04 6.60E+03 1526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I 3.50E+04 1
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I 3.50E+04 1108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I 3.50E+04 1
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I 1.10E+05 1479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P 7.00E+03 1
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A 7.00E+02 17440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S 1.80E+04 11314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I 3.20E+04 11929-77-7 Pesticides vernam 1.00E-03 I 3.50E+03 1
50471-44-8 Pesticides vinclozolin 1.20E-03 O 4.20E+03 1108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H 3.50E+06 1
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 1.10E+04 8.80E+01 181-81-2 Pesticides warfarin 3.00E-04 I 1.10E+03 1
8012-95-1 Petroleum white mineral oil 3.00E+00 P 1.10E+07 1108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S 7.00E+05 1
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S 7.00E+05 1106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S 7.00E+05 1
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I 9.00E+00 7.00E+05 17440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I 1.10E+06 1
557-21-1 Cyanides zinc cyanide 5.00E-02 I 1.80E+05 11314-84-7 Metal compounds zinc phosphide 3.00E-04 I 1.10E+03 1
12122-67-7 Pesticides zineb 5.00E-02 I 1.80E+05 1
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 103 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
83-32-9 PAHs acenaphthene 6.00E-02 I 9.60E+02 130560-19-1 Pesticides acephate 1.20E-03 O 1.90E+01 1
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-03 234256-82-1 Pesticides acetochlor 2.00E-02 I 3.20E+02 1
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I 7.20E+03 275-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-04 275-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-02 298-86-2 SVOCs acetophenone 1.00E-01 I 8.00E+02 2
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I 1.00E+02 2107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 4.00E+00 2
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M 1.60E+01 2.30E-02 0.00E+00 279-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I 4.00E+03 2
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 3.20E+02 8.10E-02 215972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C 1.60E+02 1.60E+00 0.00E+00 2.00E+00 2.00E+00 1
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C 2.40E+03 4.90E+00 1116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I 1.60E+01 1
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I 1.60E+01 1309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 2.40E-01 2.60E-03 2
74223-64-6 Pesticides ally 2.50E-01 I 4.00E+03 1107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I 4.00E+01 2107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C 2.10E+00 2
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P 1.60E+04 120859-73-8 Metal compounds aluminum phosphide 4.00E-04 I 6.40E+00 167485-29-4 Pesticides amdro 1.70E-02 O 2.70E+02 1
834-12-8 Pesticides ametryn 9.00E-03 I 1.40E+02 1591-27-5 Phenols aminophenol;m- 8.00E-02 P 1.30E+03 1
33089-61-1 Pesticides amitraz 2.50E-03 I 4.00E+01 17664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-01 27790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I 1.10E+01 17773-06-0 Pesticides ammonium sulfamate 2.00E-01 I 3.20E+03 1
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I 5.60E+01 7.70E+00 2120-12-7 PAHs anthracene 3.00E-01 I 4.80E+03 1
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 6.40E+00 6.00E+00 6.00E+00 6.00E+00 11314-60-9 Metal compounds antimony pentoxide 5.00E-04 H 8.00E+00 1
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H 1.40E+01 11332-81-6 Metal compounds antimony tetroxide 4.00E-04 H 6.40E+00 11309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05 1
74115-24-5 Pesticides apollo 1.30E-02 I 2.10E+02 1140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I 8.00E+02 3.50E+00 1
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 1.10E+00 1.30E+00 111097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 3.20E-01 4.40E-02 111096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S 4.40E-02 1
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 5.00E+00 4.80E+00 5.80E-02 0.00E+00 1.00E+01 1.00E+01 17784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C 2.80E-02 21332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I 7.00E+06 7.00E+06 7.00E+06 1
76578-14-8 Pesticides assure 9.00E-03 I 1.40E+02 13337-71-1 Pesticides asulam 3.60E-02 O 5.80E+02 11912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C 5.60E+02 3.80E-01 3.00E+00 3.00E+00 3.00E+00 1
65195-55-3 Pesticides avermectin B1 4.00E-04 I 6.40E+00 1103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I 8.00E-01 1
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I 3.20E+03 2.00E+03 2.00E+03 2.00E+03 1114-26-1 Pesticides baygon 4.00E-03 I 6.40E+01 1
43121-43-3 Pesticides bayleton 3.40E-02 O 5.40E+02 168359-37-5 Pesticides baythroid 2.50E-02 I 4.00E+02 1
1861-40-1 Pesticides benefin 5.00E-03 O 4.00E+01 217804-35-2 Pesticides benomyl 5.00E-02 I 8.00E+02 125057-89-0 Herbicides bentazon 3.00E-02 I 4.80E+02 1
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P 8.00E+02 1.10E+01 2
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 104 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
71-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 5.00E+00 3.20E+01 8.00E-01 0.00E+00 5.00E+00 5.00E+00 2108-98-5 SVOCs benzenethiol 1.00E-03 P 8.00E+00 2
92-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 4.80E+01 3.80E-04 156-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES 150-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 1.00E-01 4.80E+00 2.30E-02 0.00E+00 2.00E-01 2.00E-01 1
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES 1207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES 1
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I 6.40E+04 198-07-7 VOCs benzotrichloride 1.30E+01 I 3.40E-03 2
100-51-6 SVOCs benzyl alcohol 1.00E-01 P 8.00E+02 2100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I 1.60E+01 2.60E-01 2
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 3.20E+01 4.00E+00 4.00E+00 4.00E+00 191-58-7 PAHs beta-chloronaphthalene 8.00E-02 I 6.40E+02 2
141-66-2 Pesticides bidrin 3.00E-05 O 4.80E-01 182657-04-3 Pesticides biphenthrin 1.50E-02 I 2.40E+02 1
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I 4.00E+03 5.50E+00 2108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 3.20E+02 6.30E-01 2111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 4.00E-02 2117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 3.20E+02 6.30E+00 0.00E+00 6.00E+00 6.00E+00 1542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I 2.00E-04 2
80-05-7 Phenols bisphenol a 5.00E-02 I 8.00E+02 17440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I 3.20E+03 1
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I 6.40E+01 1.30E-01 0.00E+00 1.00E+01 1.00E+01 179-08-3 SVOCs bromoacetic acid 6.00E+01 6.00E+01 1
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I 6.40E+01 275-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 1.60E+02 7.10E-01 0.00E+00 8.00E+01 8.00E+01 2
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-01 275-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 1.60E+02 5.50E+00 0.00E+00 8.00E+01 8.00E+01 274-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 1.10E+01 2
2104-96-3 Pesticides bromophos 5.00E-03 H 8.00E+01 11689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O 2.40E+02 8.80E-01 11689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O 2.40E+02 8.80E-01 1
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C 7.30E-02 271-36-3 VOCs butanol;n- 1.00E-01 I 8.00E+02 285-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P 3.20E+03 4.60E+01 1
2008-41-5 Pesticides butylate 5.00E-02 I 4.00E+02 285-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I 1.60E+04 194-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O 7.00E+01 175-60-5 Pesticides cacodylic acid 2.00E-02 A 3.20E+02 1
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I 5.00E+00 8.00E+00 5.00E+00 5.00E+00 5.00E+00 17440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 1
592-01-8 Cyanides calcium cyanide 1.00E-03 I 1.60E+01 1105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I 8.00E+03 1
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C 3.20E+01 5.80E-01 1133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C 2.10E+03 3.80E+01 1
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I 1.60E+03 11563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I 8.00E+01 4.00E+01 4.00E+01 4.00E+01 1
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I 8.00E+02 256-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 3.20E+01 6.30E-01 0.00E+00 5.00E+00 5.00E+00 2
55285-14-8 Pesticides carbosulfan 1.00E-02 I 1.60E+02 15234-68-4 Pesticides carboxin 1.00E-01 I 1.60E+03 11306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04 1
302-17-0 VOCs chloral hydrate 1.00E-01 I 8.00E+02 2133-90-4 Herbicides chloramben 1.50E-02 I 2.40E+02 1118-75-2 Pesticides chloranil 4.00E-01 H 2.20E-01 1
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 8.00E+00 2.50E-01 0.00E+00 2.00E+00 2.00E+00 1143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I 4.80E+00 8.80E-03 1
16887-00-6 Nutrients chloride 1
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 105 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
90982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O 1.40E+03 17782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 8.00E+02 4.00E+03 4.00E+03 4.00E+03 2
506-77-4 Cyanides chlorine cyanide 5.00E-02 I 4.00E+02 210049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I 2.40E+02 8.00E+02 8.00E+02 8.00E+02 2
7758-19-2 Nutrients chlorite 3.00E-02 I 4.80E+02 8.00E+02 1.00E+03 1.00E+03 175-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01 2
126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H 1.60E+02 23165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H 1.90E-01 1
95-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P 4.80E+01 8.80E-01 179-11-8 SVOCs chloroacetic acid 2.00E-03 H 3.20E+01 7.00E+01 6.00E+01 6.00E+01 1
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06 1106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P 3.20E+01 2.20E-01 2108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 1.60E+02 1.00E+02 1.00E+02 1.00E+02 2510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C 3.20E+02 8.00E-01 1
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X 4.80E+02 198-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P 2.40E+01 2
109-69-3 VOCs chlorobutane;1- 4.00E-02 P 3.20E+02 259-50-7 Phenols chlorocresol 1.00E-01 A 1.60E+03 175-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+01 267-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 8.00E+01 1.40E+00 7.00E+01 8.00E+01 8.00E+01 274-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02 2
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C 1.80E-02 288-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P 4.80E+01 2.90E-01 1
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P 5.60E+00 7.30E-01 295-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I 4.00E+01 2
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C 2.40E+02 5.10E+00 195-49-8 VOCs chlorotoluene;o- 2.00E-02 I 1.60E+02 2
101-21-3 Pesticides chlorpropham 5.00E-02 O 8.00E+02 12921-88-2 Pesticides chlorpyrifos 1.00E-03 A 1.60E+01 15598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H 1.60E+02 1
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O 8.00E+02 160238-56-4 Pesticides chlorthiophos 8.00E-04 H 1.30E+01 1
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES 5.00E+01 1.00E+02 1.00E+02 1.00E+02 116065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I 2.40E+04 118540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 4.80E+01 1
218-01-9 cPAHs CHRYSENE PAH NOTES 17440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P 4.80E+00 1
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+00 27440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H 6.40E+02 1.30E+03 1.30E+03 1.30E+03 1
544-92-3 Cyanides copper cyanide 5.00E-03 I 8.00E+01 1108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I 4.00E+02 2
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I 4.00E+02 2106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A 8.00E+02 2123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H 8.00E+00 2.30E-02 2
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I 8.00E+02 221725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H 3.20E+01 1.00E-01 1
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 1.00E+01 2.00E+02 2.00E+02 2.00E+02 1460-19-5 Cyanides cyanogen 1.00E-03 I 8.00E+00 2506-68-3 Cyanides cyanogen bromide 9.00E-02 I 7.20E+02 2110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00 1108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I 4.00E+04 2108-91-8 VOCs cyclohexylamine 2.00E-01 I 1.60E+03 2
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O 1.60E+01 152315-07-8 Pesticides cypermethrin 2.30E-02 O 3.70E+02 166215-27-8 Pesticides cyromazine 5.00E-01 O 8.00E+03 1
1861-32-1 Herbicides dacthal 1.00E-02 I 1.60E+02 175-99-0 Herbicides dalapon, sodium salt 3.00E-02 I 2.40E+02 2.00E+02 2.00E+02 2.00E+02 2
39515-41-8 Pesticides danitol 2.50E-02 I 4.00E+02 1
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 106 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
94-82-6 Pesticides db;2,4- 3.00E-02 O 4.80E+02 172-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 4.80E-01 3.60E-01 172-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 4.80E+00 2.60E-01 150-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 3.00E-01 8.00E+00 2.60E-01 1
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I 1.10E+02 1.30E+02 18065-48-3 Pesticides demeton 4.00E-05 I 6.40E-01 1
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I 9.60E+03 7.30E+01 4.00E+02 4.00E+02 4.00E+02 12303-16-4 Pesticides diallate 6.10E-02 H 1.40E+00 1
333-41-5 Pesticides diazinon 7.00E-04 A 1.10E+01 153-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES 1
132-64-9 PAHs dibenzofuran 1.00E-03 X 1.60E+01 196-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P 1.60E+00 5.50E-02 0.00E+00 2.00E-01 2.00E-01 2
631-64-1 SVOCs dibromoacetic acid 6.00E+01 6.00E+01 1106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I 8.00E+01 2124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I 1.60E+02 5.20E-01 6.00E+01 8.00E+01 8.00E+01 2
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I 1.60E+03 11918-00-9 Herbicides dicamba 3.00E-02 I 4.80E+02 13400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS 4.00E+03 4.00E+03 4.00E+03 1
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+01 279-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I 6.40E+01 1.80E+00 0.00E+00 6.00E+01 6.00E+01 195-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 7.20E+02 6.00E+02 6.00E+02 6.00E+02 2
541-73-1 VOCs dichlorobenzene;1,3- 2106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 5.60E+02 8.10E+00 7.50E+01 7.50E+01 7.50E+01 2
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 1.90E-01 175-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I 1.60E+03 275-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C 1.60E+03 7.70E+00 2
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 5.00E+00 4.80E+01 4.80E-01 0.00E+00 5.00E+00 5.00E+00 2540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H 7.20E+01 2
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 4.00E+02 7.00E+00 7.00E+00 7.00E+00 2156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I 1.60E+01 7.00E+01 7.00E+01 7.00E+01 2156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I 1.60E+02 1.00E+02 1.00E+02 1.00E+02 2120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I 2.40E+01 2
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I 1.60E+02 7.00E+01 7.00E+01 7.00E+01 178-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 3.20E+02 1.20E+00 0.00E+00 5.00E+00 5.00E+00 2
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I 2.40E+01 2542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 2.40E+02 4.40E-01 2
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I 4.00E+00 1.50E-01 277-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P 6.40E+02 260-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 8.00E-01 5.50E-03 184-66-2 Phthalates diethyl phthalate 8.00E-01 I 1.30E+04 1
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P 2.40E+02 2111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P 4.80E+02 2617-84-5 SVOCs diethylformamide 1.00E-03 P 1.60E+01 1
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C 2.50E-04 143222-48-6 Pesticides difenzoquat 8.30E-02 O 1.30E+03 135367-38-5 Pesticides diflubenzuron 2.00E-02 I 3.20E+02 1
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+01 21445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I 6.40E+02 2
55290-64-7 Pesticides dimethipin 2.20E-02 O 3.50E+02 160-51-5 Pesticides dimethoate 2.20E-03 O 3.50E+01 1
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P 5.50E-02 1131-11-3 Phthalates dimethyl phthalate 1120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I 8.00E+02 2
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H 1.50E-01 195-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P 1.60E+01 2.20E-01 2
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P 1.60E+01 1.60E+00 2119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P 8.00E-03 1
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P 8.00E+02 2
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 107 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
57-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X 8.00E-01 2540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C 8.00E-05 2105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I 1.60E+02 2576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I 4.80E+00 2
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I 8.00E+00 299-65-0 Explosives dinitrobenzene;m- 1.00E-04 I 1.60E+00 1
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P 1.60E+00 1100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P 1.60E+00 1131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I 3.20E+01 1
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I 3.20E+01 125550-58-7 Phenols dinitrophenols 1
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I 1.40E+01 1.30E-01 1121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 3.20E+01 2.80E-01 1606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P 4.80E+00 5.80E-02 1117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P 1.60E+02 1
88-85-7 Herbicides dinoseb 1.00E-03 I 1.60E+01 7.00E+00 7.00E+00 7.00E+00 1123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I 2.40E+02 4.40E-01 2957-51-7 Pesticides diphenamid 3.00E-02 I 4.80E+02 1122-39-4 Pesticides diphenylamine 1.00E-01 O 1.60E+03 1122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 1.10E-01 1
85-00-7 Pesticides diquat 2.20E-03 I 3.50E+01 2.00E+01 2.00E+01 2.00E+01 11937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C 1.20E-02 12602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C 1.20E-02 1
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C 1.30E-02 1298-04-4 Pesticides disulfoton 4.00E-05 I 6.40E-01 1505-29-3 SVOCs dithiane;1,4- 1.00E-02 I 1.60E+02 1330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I 3.20E+01 1534-52-1 Phenols DNOC 8.00E-05 X 1.30E+00 1
2439-10-3 Pesticides dodine 2.00E-02 O 3.20E+02 1115-29-7 Pesticides endosulfan 6.00E-03 I 9.60E+01 1
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P 9.60E+01 1959-98-8 Pesticides endosulfan;alpha 1
33213-65-9 Pesticides endosulfan;beta 1145-73-3 Herbicides endothall 2.00E-02 I 3.20E+02 1.00E+02 1.00E+02 1.00E+02 1
72-20-8 Pesticides endrin 3.00E-04 I 4.80E+00 2.00E+00 2.00E+00 2.00E+00 17421-93-4 Pesticides endrin aldehyde 1
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I 4.80E+01 4.40E+00 0.00E+00 2106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03 2
16672-87-0 Pesticides ethephon 5.00E-03 I 8.00E+01 1563-12-2 Pesticides ethion 5.00E-04 I 8.00E+00 1111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P 8.00E+02 2110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P 7.20E+02 2141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I 7.20E+03 2140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H 4.00E+01 9.10E-01 2
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00 2759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O 4.00E+02 2
60-29-7 VOCs ethyl ether 2.00E-01 I 1.60E+03 297-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H 7.20E+02 2
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I 1.60E-01 1100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 7.00E+02 8.00E+02 7.00E+02 7.00E+02 7.00E+02 2109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P 5.60E+02 2107-15-3 VOCs ethylene diamine 9.00E-02 P 7.20E+02 2106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I 1.00E-02 7.20E+01 2.20E-02 0.00E+00 5.00E-02 5.00E-02 2107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I 1.60E+04 2111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I 8.00E+02 2
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C 1.40E-01 296-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C 1.30E+00 1.90E+00 184-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I 4.80E+04 1
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 108 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
101200-48-0 Pesticides express 8.00E-03 I 1.30E+02 122224-92-6 Pesticides fenamiphos 2.50E-04 I 4.00E+00 1
2164-17-2 Pesticides fluometuron 1.30E-02 I 2.10E+02 1206-44-0 PAHs fluoranthene 4.00E-02 I 6.40E+02 1
86-73-7 PAHs fluorene 4.00E-02 I 6.40E+02 116984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I 9.60E+02 4.00E+03 4.00E+03 4.00E+03 159756-60-4 Pesticides fluridone 8.00E-02 I 1.30E+03 156425-91-3 Pesticides flurprimidol 4.00E-02 O 6.40E+02 166332-96-5 Pesticides flutolanil 5.00E-01 O 8.00E+03 169409-94-5 Pesticides fluvalinate 1.00E-02 I 1.60E+02 1
133-07-3 Pesticides folpet 9.00E-02 O 1.40E+03 172178-02-0 Pesticides fomesafen 2.50E-03 O 4.00E+01 1
944-22-9 Pesticides fonofos 2.00E-03 I 3.20E+01 150-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C 1.60E+03 2.10E+00 264-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P 7.20E+03 2
39148-24-8 Pesticides fosetyl-al 2.50E+00 O 4.00E+04 1110-00-9 Furans furan 1.00E-03 I 8.00E+00 2
67-45-8 SVOCs furazolidone 3.80E+00 H 2.30E-02 198-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I 2.40E+01 2
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C 5.80E-02 160568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I 2.90E+00 177182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O 9.60E+01 1
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I 3.20E+00 21071-83-6 SVOCs glyphosate 1.00E-01 I 1.60E+03 7.00E+02 7.00E+02 7.00E+02 1
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTE 1.50E+01 0.00E+00 1.50E+01 1.50E+01 1unavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE 4.00E+00 0.00E+00 4.00E+00 4.00E+00 1
86-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 4.80E+01 169806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I 8.00E-01 179277-27-3 Pesticides harmony 4.30E-02 O 6.90E+02 1
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 8.00E+00 1.90E-02 0.00E+00 4.00E-01 4.00E-01 11024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 1.00E-01 4.80E-03 0.00E+00 2.00E-01 2.00E-01 2
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X 2.40E+00 287-82-1 SVOCs hexabromobenzene 2.00E-03 I 3.20E+01 1
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I 3.20E+00 1118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 1.30E+01 5.50E-02 0.00E+00 1.00E+00 1.00E+00 1
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 8.00E+00 5.60E-01 2319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 1.30E+02 1.40E-02 1319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 4.90E-02 1608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I 4.90E-02 1
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 4.80E+01 5.00E+01 5.00E+01 5.00E+01 234465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I 1.40E-05 1
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 5.60E+00 1.10E+00 270-30-4 SVOCs hexachlorophene 3.00E-04 I 4.80E+00 1
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06 2110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H 4.80E+02 2591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I 4.00E+01 2
51235-04-2 Pesticides hexazinone 3.30E-02 I 5.30E+02 1302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I 1.50E-02 2
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I 2.90E-02 17647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03 2
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I 4.80E+00 27783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04 2
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P 6.40E+02 1.50E+00 135554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O 4.00E+01 1.40E+00 181335-37-7 Pesticides imazaquin 2.50E-01 I 4.00E+03 1
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES 136734-19-7 Pesticides iprodione 4.00E-02 I 6.40E+02 1
7439-89-6 Metals iron 7.00E-01 P 1.10E+04 1
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 109 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
78-83-1 VOCs isobutyl alcohol 3.00E-01 I 2.40E+03 278-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 1.60E+03 4.60E+01 2
33820-53-0 Pesticides isopropalin 1.50E-02 I 2.40E+02 11832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I 1.60E+03 1
82558-50-7 Pesticides isoxaben 5.00E-02 I 8.00E+02 177501-63-4 Pesticides lactofen 8.00E-03 O 1.30E+02 1
7439-92-1 Metals LEAD LEAD NOTES 1.50E+01 0.00E+00 1.50E+01 1.50E+01 158-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 2.00E-01 4.80E+00 8.00E-02 2.00E-01 2.00E-01 2.00E-01 1
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O 1.20E+02 17791-03-9 Perchlorates lithium perchlorate 7.00E-04 I 1.10E+01 1
83055-99-6 Pesticides londax 2.00E-01 I 3.20E+03 1121-75-5 Pesticides malathion 2.00E-02 I 3.20E+02 1108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I 8.00E+02 2123-33-1 SVOCs maleic hydrazide 5.00E-01 I 8.00E+03 1109-77-3 VOCs malononitrile 1.00E-04 P 8.00E-01 2
8018-01-7 Pesticides mancozeb 3.00E-02 H 4.80E+02 112427-38-2 Pesticides maneb 5.00E-03 I 8.00E+01 1
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I 7.50E+02 1
950-10-7 Pesticides mephosfolan 9.00E-05 H 1.40E+00 124307-26-4 Pesticides mepiquat chloride 3.00E-02 I 4.80E+02 1
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I 4.80E+00 2.00E+00 2.00E+00 2.00E+00 17439-97-6 Metals mercury 3.00E-04 I 8.57E-05 2.00E+00 2.00E+00 2.00E+00 2.00E+00 1
150-50-5 Pesticides merphos 3.00E-05 I 4.80E-01 157837-19-1 Pesticides metalaxyl 6.00E-02 I 9.60E+02 1
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I 8.00E-01 210265-92-6 Pesticides methamidosphos 5.00E-05 I 8.00E-01 1
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I 1.60E+04 2950-37-8 Pesticides methidathion 1.50E-03 O 2.40E+01 1
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I 4.00E+02 199-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C 1.80E+00 172-43-5 Pesticides methoxychlor 5.00E-03 I 8.00E+01 4.00E+01 4.00E+01 4.00E+01 1
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P 6.40E+01 2109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P 4.00E+01 2
79-20-9 VOCs methyl acetate 1.00E+00 X 8.00E+03 296-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H 2.40E+02 278-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I 4.80E+03 2
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H 6.40E+02 222967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I 1.60E+00 1
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I 1.10E+04 290-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P 5.60E+02 1.50E+00 291-57-6 PAHs methyl naphthalene;2- 4.00E-03 I 3.20E+01 2
298-00-0 Pesticides methyl parathion 2.50E-04 I 4.00E+00 125013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H 4.80E+01 2
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H 5.60E+02 21634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C 2.00E+01 2.40E+01 2
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I 8.00E+00 199-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P 3.20E+02 9.70E+00 1
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C 6.70E-01 195-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P 2.70E+00 2
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P 3.20E+01 8.80E-01 1101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I 1.90E+00 1
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H 8.00E+01 275-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 5.00E+00 4.80E+01 5.80E+00 0.00E+00 5.00E+00 5.00E+00 2
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-04 19016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04 1
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C 5.50E-02 160-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P 8.00E+00 2
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 110 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
51218-45-2 Pesticides metolachlor 1.50E-01 I 2.40E+03 121087-64-9 Pesticides metribuzin 2.50E-02 I 4.00E+02 1
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 3.20E+00 4.90E-03 12212-67-1 Pesticides molinate 2.00E-03 I 3.20E+01 17439-98-7 Metals molybdenum 5.00E-03 I 8.00E+01 1
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I 1.60E+03 4.00E+03 4.00E+03 4.00E+03 1300-76-5 Pesticides naled 2.00E-03 I 3.20E+01 1
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 1.60E+02 1.60E+02 215299-99-7 Pesticides napropamide 1.20E-01 O 1.90E+03 1
104-51-8 VOCs n-butylbenzene 5.00E-02 P 4.00E+02 2E715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C 1.80E+02 9.60E-02 1
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 3.20E+02 1.00E+02 112035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C 1.80E+02 5.10E-02 114797-55-8 Nutrients nitrate 1.60E+00 I 2.60E+04 1.00E+04 1.00E+04 1.00E+04 114797-65-0 Nutrients nitrite 1.00E-01 I 1.60E+03 1.00E+03 1.00E+03 1.00E+03 1
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X 1.60E+02 1100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P 6.40E+01 4.40E+00 1
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 1.60E+01 267-20-9 SVOCs nitrofurantoin 7.00E-02 H 1.10E+03 159-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C 6.70E-02 1
556-88-7 SVOCs nitroguanidine 1.00E-01 I 1.60E+03 179-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00 2
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I 3.10E-02 155-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I 2.90E-04 262-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 6.40E-02 8.60E-04 2
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I 8.10E-03 2621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 1.30E-02 1
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 1.80E+01 1759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C 3.20E-03 1
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I 4.00E-03 1684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C 7.30E-04 1930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I 2.10E-02 2
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X 8.00E-01 288-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P 7.20E+00 2.00E-01 299-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P 3.20E+01 2.70E+00 2
84852-15-3 Phenols nonylphenol 127314-13-2 Pesticides norflurazon 1.50E-02 O 2.40E+02 185509-19-9 Pesticides nustar 2.00E-03 O 3.20E+01 132536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I 4.80E+01 1
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I 8.00E+02 1152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H 3.20E+01 1
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O 2.20E+03 1.10E+01 119666-30-9 Pesticides oxadiazon 5.00E-03 I 8.00E+01 123135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I 4.00E+02 2.00E+02 2.00E+02 2.00E+02 142874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O 4.80E+02 1.20E+00 176738-62-0 Herbicides paclobutrazol 1.30E-02 I 2.10E+02 1
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I 7.20E+01 156-38-2 Pesticides parathion 6.00E-03 H 9.60E+01 1
1114-71-2 Pesticides pebulate 5.00E-02 H 4.00E+02 240487-42-1 Pesticides pendimethalin 3.00E-01 O 4.80E+03 1
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H 3.20E+02 3.80E+00 160348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I 1.60E+00 132534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I 3.20E+01 1
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I 1.30E+01 182-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H 4.80E+01 3.40E-01 187-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 8.00E+01 2.20E-01 0.00E+00 1.00E+00 1.00E+00 1
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I 1.10E+01 152645-53-1 Pesticides permethrin 5.00E-02 I 8.00E+02 1
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 111 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
unavailable19 General Chemistry pH pH NOTES 113684-63-4 Pesticides phenmedipham 2.40E-01 O 3.80E+03 1
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 2.40E+03 2106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H 3.00E+03 1108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I 9.60E+01 1
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H 6.40E+01 1.90E+00 162-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I 1.30E+00 190-43-7 Phenols phenylphenol;2- 1.90E-03 H 4.60E+01 1
298-02-2 Pesticides phorate 2.00E-04 H 3.20E+00 175-44-5 VOCs phosgene 3.00E-04 I 8.57E-05 2
732-11-6 Pesticides phosmet 2.00E-02 I 3.20E+02 17803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I 2.40E+00 27664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P 3.90E+05 27723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I 1.60E-01 2
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H 1.60E+04 185-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I 3.20E+04 1
1918-02-1 Herbicides picloram 7.00E-02 I 1.10E+03 5.00E+02 5.00E+02 5.00E+02 129232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O 1.10E+00 136355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C 1.10E-01 2.90E-03 1
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 1.00E-01 4.40E-02 0.00E+00 5.00E-01 5.00E-01 1151-50-8 Cyanides potassium cyanide 2.00E-03 I 3.20E+01 1
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I 1.10E+01 1506-61-6 Cyanides potassium silver cyanide 5.00E-03 I 8.00E+01 1
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I 1.40E+02 5.80E-01 126399-36-0 Pesticides profluralin 6.00E-03 H 9.60E+01 1
1610-18-0 Pesticides prometon 1.50E-02 I 2.40E+02 17287-19-6 Pesticides prometryn 4.00E-02 O 6.40E+02 1
23950-58-5 Pesticides pronamide 7.50E-02 I 1.20E+03 11918-16-7 Pesticides propachlor 1.30E-02 I 2.10E+02 1
709-98-8 Pesticides propanil 5.00E-03 I 8.00E+01 12312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O 3.20E+02 2.30E-01 2
107-19-7 VOCs propargyl alcohol 2.00E-03 I 1.60E+01 2139-40-2 Pesticides propazine 2.00E-02 I 3.20E+02 1122-42-9 Pesticides propham 2.00E-02 I 3.20E+02 1
60207-90-1 Pesticides propiconazole 1.00E-01 O 1.60E+03 1123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03 2
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I 1.60E+01 1103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X 8.00E+02 2
57-55-6 Glycols propylene glycol 2.00E+01 P 1.60E+05 26423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05 2
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H 5.60E+03 2107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H 5.60E+03 2
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I 1.80E-01 281335-77-5 Pesticides pursuit 2.50E+00 O 4.00E+04 151630-58-1 Pesticides pydrin 2.50E-02 I 4.00E+02 1
129-00-0 PAHs pyrene 3.00E-02 I 4.80E+02 1110-86-1 VOCs pyridine 1.00E-03 I 8.00E+00 2
13593-03-8 Pesticides quinalphos 5.00E-04 I 8.00E+00 191-22-5 SVOCs quinoline 3.00E+00 I 1.50E-02 2
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTE 3.00E+00 1unavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES 5.00E+00 0.00E+00 5.00E+00 5.00E+00 1
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 I 6.40E+01 1.10E+00 1E715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A 1
10453-86-8 Pesticides resmethrin 3.00E-02 I 4.80E+02 1299-84-3 Pesticides ronnel 5.00E-02 H 8.00E+02 1
83-79-4 Pesticides rotenone 4.00E-03 I 6.40E+01 178-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O 1.60E+00 1
78587-05-0 Pesticides savey 2.50E-02 I 4.00E+02 1
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 112 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
135-98-8 VOCs sec-butylbenzene 1.00E-01 X 8.00E+02 27783-00-8 Metal compounds selenious acid 5.00E-03 I 8.00E+01 17782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 8.00E+01 5.00E+01 5.00E+01 5.00E+01 1
74051-80-2 Pesticides sethoxydim 1.40E-01 O 2.20E+03 17440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I 8.00E+01 1
506-64-9 Cyanides silver cyanide 1.00E-01 I 1.60E+03 1122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H 8.00E+01 7.30E-01 4.00E+00 4.00E+00 4.00E+00 1
26628-22-8 Metal compounds sodium azide 4.00E-03 I 3.20E+01 2143-33-9 Cyanides sodium cyanide 1.00E-03 I 1.60E+01 1148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H 4.80E+02 3.20E-01 1
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I 3.20E-01 113718-26-8 Metal compounds sodium metavanadate 1.00E-03 H 1.60E+01 1
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I 1.10E+01 17440-24-6 Metals strontium 6.00E-01 I 9.60E+03 1
57-24-9 SVOCs strychnine 3.00E-04 I 4.80E+00 1100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I 1.60E+03 1.00E+02 1.00E+02 1.00E+02 2
88671-89-0 Pesticides systhane 2.50E-02 I 4.00E+02 11746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 1.10E-05 6.70E-07 0.00E+00 3.00E-05 3.00E-05 1
34014-18-1 Pesticides tebuthiuron 7.00E-02 I 1.10E+03 13383-96-8 Pesticides temephos 2.00E-02 H 3.20E+02 15902-51-2 Pesticides terbacil 1.30E-02 I 2.10E+02 1
13071-79-9 SVOCs terbufos 2.50E-05 H 4.00E-01 1886-50-0 Pesticides terbutryn 1.00E-03 I 1.60E+01 1
98-06-6 VOCs tert-butylbenzene 1.00E-01 X 8.00E+02 25436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I 1.60E+00 1
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I 4.80E+00 1630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I 2.40E+02 1.70E+00 2
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 1.60E+02 2.20E-01 2127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 5.00E+00 4.80E+01 2.10E+01 0.00E+00 5.00E+00 5.00E+00 2
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I 4.80E+02 15216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H 9.60E-01 4.40E-03 1
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H 4.80E+02 3.60E+00 13689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I 8.00E+00 1
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I 8.00E-04 2811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01 2109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I 7.20E+03 2
1314-32-5 Metal compounds thallic oxide 2.00E-05 S 3.20E-01 1563-68-8 Metal compounds thallium acetate 1.00E-05 X 1.60E-01 1
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X 3.20E-01 17791-12-0 Metal compounds thallium chloride 1.00E-05 X 1.60E-01 1
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X 1.60E-01 112039-52-0 Metal compounds thallium selenite 1.00E-05 S 1.60E-01 1
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X 3.20E-01 17440-28-0 Metals thallium, soluble salts 1.00E-05 X 1.60E-01 5.00E-01 2.00E+00 2.00E+00 1
28249-77-6 Pesticides thiobencarb 1.00E-02 I 1.60E+02 121564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H 4.80E+02 139196-18-4 Pesticides thiofanox 3.00E-04 H 4.80E+00 123564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O 4.30E+02 7.30E+00 1
137-26-8 Pesticides thiram 1.50E-02 O 1.20E+02 27440-31-5 Metals tin 6.00E-01 H 9.60E+03 1
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I 8.00E+00 2.90E+00 1108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 1.00E+03 6.40E+02 1.00E+03 1.00E+03 1.00E+03 2
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C 1.10E+00 2584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 1.10E+00 2
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 1.10E+00 295-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X 3.20E+00 4.90E-01 1
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P 3.20E+01 1.50E+00 28001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 1.40E+00 8.00E-02 0.00E+00 3.00E+00 3.00E+00 1
Washington State Department of Ecology - CLARC Groundwater Table (Methods A, B, and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 113 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod A
(Table 720-1)(µg/L)
GroundWaterMethod BNoncancer(Eq. 720-1)
(µg/L)
GroundWaterMethod B
Cancer(Eq. 720-2)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
93-72-1 Herbicides tp;2,4,5- 8.00E-03 I 1.30E+02 5.00E+01 5.00E+01 5.00E+01 1unavailable09 Petroleum tph, diesel range organics 5.00E+02 1unavailable10 Petroleum tph, heavy oils 5.00E+02 1unavailable11 Petroleum tph, mineral oils 5.00E+02 1unavailable25 Petroleum tph: gasoline range organics, benzene present 8.00E+02 1unavailable08 Petroleum tph: gasoline range organics, no detectable benzene 1.00E+03 1
66841-25-6 Pesticides tralomethrin 7.50E-03 I 1.20E+02 12303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O 4.00E+02 1.20E+00 1
82097-50-5 Pesticides triasulfuron 1.00E-02 I 1.60E+02 1615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I 8.00E+01 1688-73-3 Organotins tributyltin 1
56-35-9 Organotins tributyltin oxide 3.00E-04 I 4.80E+00 110025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS 4.00E+03 4.00E+03 4.00E+03 1
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I 2.40E+05 276-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I 3.20E+02 1.30E+00 2.00E+01 6.00E+01 6.00E+01 1
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H 3.00E+00 1634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X 4.80E-01 1.30E+01 1120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 8.00E+01 1.50E+00 7.00E+01 7.00E+01 7.00E+01 2
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 2.00E+02 1.60E+04 2.00E+02 2.00E+02 2.00E+02 279-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 3.20E+01 7.70E-01 3.00E+00 5.00E+00 5.00E+00 279-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 5.00E+00 4.00E+00 5.40E-01 0.00E+00 5.00E+00 5.00E+00 275-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I 2.40E+03 295-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I 8.00E+02 288-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 8.00E+00 4.00E+00 293-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I 1.60E+02 1
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I 4.00E+01 296-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M 3.20E+01 3.80E-04 296-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X 2.40E+01 2
58138-08-2 Pesticides tridiphane 3.00E-03 I 4.80E+01 1121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03 2
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 I 1.20E+02 1.10E+01 1unavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES 8.00E+01 8.00E+01 2
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P 8.00E+01 2.20E+00 2526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+01 2
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+01 2108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I 8.00E+01 2
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I 4.80E+02 1479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P 1.60E+01 2
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A 3.20E+00 0.00E+00 3.00E+01 3.00E+01 17440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S 8.00E+01 11314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I 1.40E+02 11929-77-7 Pesticides vernam 1.00E-03 I 8.00E+00 2
50471-44-8 Pesticides vinclozolin 1.20E-03 O 1.90E+01 1108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H 8.00E+03 2
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 2.00E-01 2.40E+01 2.90E-02 0.00E+00 2.00E+00 2.00E+00 281-81-2 Pesticides warfarin 3.00E-04 I 2.40E+00 2
8012-95-1 Petroleum white mineral oil 3.00E+00 P 4.80E+04 1108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+03 2
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+03 2106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S 1.60E+03 2
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I 1.00E+03 1.60E+03 1.00E+04 1.00E+04 1.00E+04 27440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I 4.80E+03 1
557-21-1 Cyanides zinc cyanide 5.00E-02 I 8.00E+02 11314-84-7 Metal compounds zinc phosphide 3.00E-04 I 4.80E+00 1
12122-67-7 Pesticides zineb 5.00E-02 I 8.00E+02 1
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 114 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
83-32-9 PAHs acenaphthene 6.00E-02 I 2.10E+03 130560-19-1 Pesticides acephate 1.20E-03 O 4.20E+01 1
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-03 234256-82-1 Pesticides acetochlor 2.00E-02 I 7.00E+02 1
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I 1.60E+04 275-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-04 275-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-02 298-86-2 SVOCs acetophenone 1.00E-01 I 1.80E+03 2
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I 2.30E+02 2107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 8.80E+00 2
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M 3.50E+01 8.80E-01 0.00E+00 279-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I 8.80E+03 2
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 7.00E+02 8.10E-01 215972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C 3.50E+02 1.60E+01 0.00E+00 2.00E+00 2.00E+00 1
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C 5.30E+03 4.90E+01 1116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I 3.50E+01 1
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I 3.50E+01 1309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 5.30E-01 2.60E-02 2
74223-64-6 Pesticides ally 2.50E-01 I 8.80E+03 1107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I 8.80E+01 2107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C 2.10E+01 2
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P 3.50E+04 120859-73-8 Metal compounds aluminum phosphide 4.00E-04 I 1.40E+01 167485-29-4 Pesticides amdro 1.70E-02 O 6.00E+02 1
834-12-8 Pesticides ametryn 9.00E-03 I 3.20E+02 1591-27-5 Phenols aminophenol;m- 8.00E-02 P 2.80E+03 1
33089-61-1 Pesticides amitraz 2.50E-03 I 8.80E+01 17664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-01 27790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I 2.50E+01 17773-06-0 Pesticides ammonium sulfamate 2.00E-01 I 7.00E+03 1
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I 1.20E+02 7.70E+01 2120-12-7 PAHs anthracene 3.00E-01 I 1.10E+04 1
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 1.40E+01 6.00E+00 6.00E+00 6.00E+00 11314-60-9 Metal compounds antimony pentoxide 5.00E-04 H 1.80E+01 1
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H 3.20E+01 11332-81-6 Metal compounds antimony tetroxide 4.00E-04 H 1.40E+01 11309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05 1
74115-24-5 Pesticides apollo 1.30E-02 I 4.60E+02 1140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I 1.80E+03 3.50E+01 1
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 2.50E+00 1.30E+01 111097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 7.00E-01 4.40E-01 111096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S 4.40E-01 1
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 1.10E+01 5.80E-01 0.00E+00 1.00E+01 1.00E+01 17784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C 6.10E-02 21332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I 7.00E+06 7.00E+06 7.00E+06 1
76578-14-8 Pesticides assure 9.00E-03 I 3.20E+02 13337-71-1 Pesticides asulam 3.60E-02 O 1.30E+03 11912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C 1.20E+03 3.80E+00 3.00E+00 3.00E+00 3.00E+00 1
65195-55-3 Pesticides avermectin B1 4.00E-04 I 1.40E+01 1103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I 8.00E+00 1
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I 7.00E+03 2.00E+03 2.00E+03 2.00E+03 1114-26-1 Pesticides baygon 4.00E-03 I 1.40E+02 1
43121-43-3 Pesticides bayleton 3.40E-02 O 1.20E+03 168359-37-5 Pesticides baythroid 2.50E-02 I 8.80E+02 1
1861-40-1 Pesticides benefin 5.00E-03 O 8.80E+01 217804-35-2 Pesticides benomyl 5.00E-02 I 1.80E+03 125057-89-0 Herbicides bentazon 3.00E-02 I 1.10E+03 1
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P 1.80E+03 1.10E+02 2
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 115 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
71-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 7.00E+01 8.00E+00 0.00E+00 5.00E+00 5.00E+00 2108-98-5 SVOCs benzenethiol 1.00E-03 P 1.80E+01 2
92-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 1.10E+02 3.80E-03 156-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES 150-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 1.10E+01 8.80E-01 0.00E+00 2.00E-01 2.00E-01 1
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES 1207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES 1
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I 1.40E+05 198-07-7 VOCs benzotrichloride 1.30E+01 I 3.40E-02 2
100-51-6 SVOCs benzyl alcohol 1.00E-01 P 1.80E+03 2100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I 3.50E+01 2.60E+00 2
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 7.00E+01 4.00E+00 4.00E+00 4.00E+00 191-58-7 PAHs beta-chloronaphthalene 8.00E-02 I 1.40E+03 2
141-66-2 Pesticides bidrin 3.00E-05 O 1.10E+00 182657-04-3 Pesticides biphenthrin 1.50E-02 I 5.30E+02 1
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I 8.80E+03 5.50E+01 2108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 7.00E+02 6.30E+00 2111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 4.00E-01 2117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 7.00E+02 6.30E+01 0.00E+00 6.00E+00 6.00E+00 1542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I 2.00E-03 2
80-05-7 Phenols bisphenol a 5.00E-02 I 1.80E+03 17440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I 7.00E+03 1
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I 1.40E+02 1.30E+00 0.00E+00 1.00E+01 1.00E+01 179-08-3 SVOCs bromoacetic acid 6.00E+01 6.00E+01 1
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I 1.40E+02 275-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 3.50E+02 7.10E+00 0.00E+00 8.00E+01 8.00E+01 2
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-01 275-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 3.50E+02 5.50E+01 0.00E+00 8.00E+01 8.00E+01 274-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 2.50E+01 2
2104-96-3 Pesticides bromophos 5.00E-03 H 1.80E+02 11689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O 5.30E+02 8.80E+00 11689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O 5.30E+02 8.80E+00 1
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C 7.30E-01 271-36-3 VOCs butanol;n- 1.00E-01 I 1.80E+03 285-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P 7.00E+03 4.60E+02 1
2008-41-5 Pesticides butylate 5.00E-02 I 8.80E+02 285-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I 3.50E+04 194-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O 1.50E+02 175-60-5 Pesticides cacodylic acid 2.00E-02 A 7.00E+02 1
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I 1.80E+01 5.00E+00 5.00E+00 5.00E+00 17440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 1
592-01-8 Cyanides calcium cyanide 1.00E-03 I 3.50E+01 1105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I 1.80E+04 1
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C 7.00E+01 5.80E+00 1133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C 4.60E+03 3.80E+02 1
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I 3.50E+03 11563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I 1.80E+02 4.00E+01 4.00E+01 4.00E+01 1
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I 1.80E+03 256-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 7.00E+01 6.30E+00 0.00E+00 5.00E+00 5.00E+00 2
55285-14-8 Pesticides carbosulfan 1.00E-02 I 3.50E+02 15234-68-4 Pesticides carboxin 1.00E-01 I 3.50E+03 11306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04 1
302-17-0 VOCs chloral hydrate 1.00E-01 I 1.80E+03 2133-90-4 Herbicides chloramben 1.50E-02 I 5.30E+02 1118-75-2 Pesticides chloranil 4.00E-01 H 2.20E+00 1
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 1.80E+01 2.50E+00 0.00E+00 2.00E+00 2.00E+00 1143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I 1.10E+01 8.80E-02 1
16887-00-6 Nutrients chloride 1
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 116 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
90982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O 3.20E+03 17782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 1.80E+03 4.00E+03 4.00E+03 4.00E+03 2
506-77-4 Cyanides chlorine cyanide 5.00E-02 I 8.80E+02 210049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I 5.30E+02 8.00E+02 8.00E+02 8.00E+02 2
7758-19-2 Nutrients chlorite 3.00E-02 I 1.10E+03 8.00E+02 1.00E+03 1.00E+03 175-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01 2
126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H 3.50E+02 23165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H 1.90E+00 1
95-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P 1.10E+02 8.80E+00 179-11-8 SVOCs chloroacetic acid 2.00E-03 H 7.00E+01 7.00E+01 6.00E+01 6.00E+01 1
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06 1106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P 7.00E+01 2.20E+00 2108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 3.50E+02 1.00E+02 1.00E+02 1.00E+02 2510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C 7.00E+02 8.00E+00 1
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X 1.10E+03 198-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P 5.30E+01 2
109-69-3 VOCs chlorobutane;1- 4.00E-02 P 7.00E+02 259-50-7 Phenols chlorocresol 1.00E-01 A 3.50E+03 175-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+01 267-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 1.80E+02 1.40E+01 7.00E+01 8.00E+01 8.00E+01 274-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02 2
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C 1.80E-01 288-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P 1.10E+02 2.90E+00 1
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P 1.20E+01 7.30E+00 295-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I 8.80E+01 2
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C 5.30E+02 5.10E+01 195-49-8 VOCs chlorotoluene;o- 2.00E-02 I 3.50E+02 2
101-21-3 Pesticides chlorpropham 5.00E-02 O 1.80E+03 12921-88-2 Pesticides chlorpyrifos 1.00E-03 A 3.50E+01 15598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H 3.50E+02 1
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O 1.80E+03 160238-56-4 Pesticides chlorthiophos 8.00E-04 H 2.80E+01 1
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES 1.00E+02 1.00E+02 1.00E+02 116065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I 5.30E+04 118540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 1.10E+02 1
218-01-9 cPAHs CHRYSENE PAH NOTES 17440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P 1.10E+01 1
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+00 27440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H 1.40E+03 1.30E+03 1.30E+03 1.30E+03 1
544-92-3 Cyanides copper cyanide 5.00E-03 I 1.80E+02 1108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I 8.80E+02 2
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I 8.80E+02 2106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A 1.80E+03 2123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H 1.80E+01 2.30E-01 2
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I 1.80E+03 221725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H 7.00E+01 1.00E+00 1
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 2.20E+01 2.00E+02 2.00E+02 2.00E+02 1460-19-5 Cyanides cyanogen 1.00E-03 I 1.80E+01 2506-68-3 Cyanides cyanogen bromide 9.00E-02 I 1.60E+03 2110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00 1108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I 8.80E+04 2108-91-8 VOCs cyclohexylamine 2.00E-01 I 3.50E+03 2
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O 3.50E+01 152315-07-8 Pesticides cypermethrin 2.30E-02 O 8.10E+02 166215-27-8 Pesticides cyromazine 5.00E-01 O 1.80E+04 1
1861-32-1 Herbicides dacthal 1.00E-02 I 3.50E+02 175-99-0 Herbicides dalapon, sodium salt 3.00E-02 I 5.30E+02 2.00E+02 2.00E+02 2.00E+02 2
39515-41-8 Pesticides danitol 2.50E-02 I 8.80E+02 1
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 117 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
94-82-6 Pesticides db;2,4- 3.00E-02 O 1.10E+03 172-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 1.10E+00 3.60E+00 172-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 1.10E+01 2.60E+00 150-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 1.80E+01 2.60E+00 1
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I 2.50E+02 1.30E+03 18065-48-3 Pesticides demeton 4.00E-05 I 1.40E+00 1
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I 2.10E+04 7.30E+02 4.00E+02 4.00E+02 4.00E+02 12303-16-4 Pesticides diallate 6.10E-02 H 1.40E+01 1
333-41-5 Pesticides diazinon 7.00E-04 A 2.50E+01 153-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES 1
132-64-9 PAHs dibenzofuran 1.00E-03 X 3.50E+01 196-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P 3.50E+00 5.50E-01 0.00E+00 2.00E-01 2.00E-01 2
631-64-1 SVOCs dibromoacetic acid 6.00E+01 6.00E+01 1106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I 1.80E+02 2124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I 3.50E+02 5.20E+00 6.00E+01 8.00E+01 8.00E+01 2
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I 3.50E+03 11918-00-9 Herbicides dicamba 3.00E-02 I 1.10E+03 13400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS 4.00E+03 4.00E+03 4.00E+03 1
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+01 279-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I 1.40E+02 1.80E+01 0.00E+00 6.00E+01 6.00E+01 195-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 1.60E+03 6.00E+02 6.00E+02 6.00E+02 2
541-73-1 VOCs dichlorobenzene;1,3- 2106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 1.20E+03 8.10E+01 7.50E+01 7.50E+01 7.50E+01 2
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 1.90E+00 175-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I 3.50E+03 275-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C 3.50E+03 7.70E+01 2
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 1.10E+02 4.80E+00 0.00E+00 5.00E+00 5.00E+00 2540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H 1.60E+02 2
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 8.80E+02 7.00E+00 7.00E+00 7.00E+00 2156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I 3.50E+01 7.00E+01 7.00E+01 7.00E+01 2156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I 3.50E+02 1.00E+02 1.00E+02 1.00E+02 2120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I 5.30E+01 2
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I 3.50E+02 7.00E+01 7.00E+01 7.00E+01 178-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 7.00E+02 1.20E+01 0.00E+00 5.00E+00 5.00E+00 2
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I 5.30E+01 2542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 5.30E+02 4.40E+00 2
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I 8.80E+00 1.50E+00 277-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P 1.40E+03 260-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 1.80E+00 5.50E-02 184-66-2 Phthalates diethyl phthalate 8.00E-01 I 2.80E+04 1
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P 5.30E+02 2111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P 1.10E+03 2617-84-5 SVOCs diethylformamide 1.00E-03 P 3.50E+01 1
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C 2.50E-03 143222-48-6 Pesticides difenzoquat 8.30E-02 O 2.90E+03 135367-38-5 Pesticides diflubenzuron 2.00E-02 I 7.00E+02 1
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+01 21445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I 1.40E+03 2
55290-64-7 Pesticides dimethipin 2.20E-02 O 7.70E+02 160-51-5 Pesticides dimethoate 2.20E-03 O 7.70E+01 1
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P 5.50E-01 1131-11-3 Phthalates dimethyl phthalate 1120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I 1.80E+03 2
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H 1.50E+00 195-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P 3.50E+01 2.20E+00 2
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P 3.50E+01 1.60E+01 2119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P 8.00E-02 1
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P 1.80E+03 2
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 118 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
57-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X 1.80E+00 2540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C 8.00E-04 2105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I 3.50E+02 2576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I 1.10E+01 2
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I 1.80E+01 299-65-0 Explosives dinitrobenzene;m- 1.00E-04 I 3.50E+00 1
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P 3.50E+00 1100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P 3.50E+00 1131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I 7.00E+01 1
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I 7.00E+01 125550-58-7 Phenols dinitrophenols 1
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I 3.20E+01 1.30E+00 1121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 7.00E+01 2.80E+00 1606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P 1.10E+01 5.80E-01 1117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P 3.50E+02 1
88-85-7 Herbicides dinoseb 1.00E-03 I 3.50E+01 7.00E+00 7.00E+00 7.00E+00 1123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I 5.30E+02 4.40E+00 2957-51-7 Pesticides diphenamid 3.00E-02 I 1.10E+03 1122-39-4 Pesticides diphenylamine 1.00E-01 O 3.50E+03 1122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 1.10E+00 1
85-00-7 Pesticides diquat 2.20E-03 I 7.70E+01 2.00E+01 2.00E+01 2.00E+01 11937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C 1.20E-01 12602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C 1.20E-01 1
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C 1.30E-01 1298-04-4 Pesticides disulfoton 4.00E-05 I 1.40E+00 1505-29-3 SVOCs dithiane;1,4- 1.00E-02 I 3.50E+02 1330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I 7.00E+01 1534-52-1 Phenols DNOC 8.00E-05 X 2.80E+00 1
2439-10-3 Pesticides dodine 2.00E-02 O 7.00E+02 1115-29-7 Pesticides endosulfan 6.00E-03 I 2.10E+02 1
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P 2.10E+02 1959-98-8 Pesticides endosulfan;alpha 1
33213-65-9 Pesticides endosulfan;beta 1145-73-3 Herbicides endothall 2.00E-02 I 7.00E+02 1.00E+02 1.00E+02 1.00E+02 1
72-20-8 Pesticides endrin 3.00E-04 I 1.10E+01 2.00E+00 2.00E+00 2.00E+00 17421-93-4 Pesticides endrin aldehyde 1
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I 1.10E+02 4.40E+01 0.00E+00 2106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03 2
16672-87-0 Pesticides ethephon 5.00E-03 I 1.80E+02 1563-12-2 Pesticides ethion 5.00E-04 I 1.80E+01 1111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P 1.80E+03 2110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P 1.60E+03 2141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I 1.60E+04 2140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H 8.80E+01 9.10E+00 2
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00 2759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O 8.80E+02 2
60-29-7 VOCs ethyl ether 2.00E-01 I 3.50E+03 297-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H 1.60E+03 2
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I 3.50E-01 1100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 1.80E+03 7.00E+02 7.00E+02 7.00E+02 2109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P 1.20E+03 2107-15-3 VOCs ethylene diamine 9.00E-02 P 1.60E+03 2106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I 1.60E+02 2.20E-01 0.00E+00 5.00E-02 5.00E-02 2107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I 3.50E+04 2111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I 1.80E+03 2
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C 1.40E+00 296-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C 2.80E+00 1.90E+01 184-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I 1.10E+05 1
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 119 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
101200-48-0 Pesticides express 8.00E-03 I 2.80E+02 122224-92-6 Pesticides fenamiphos 2.50E-04 I 8.80E+00 1
2164-17-2 Pesticides fluometuron 1.30E-02 I 4.60E+02 1206-44-0 PAHs fluoranthene 4.00E-02 I 1.40E+03 1
86-73-7 PAHs fluorene 4.00E-02 I 1.40E+03 116984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I 2.10E+03 4.00E+03 4.00E+03 4.00E+03 159756-60-4 Pesticides fluridone 8.00E-02 I 2.80E+03 156425-91-3 Pesticides flurprimidol 4.00E-02 O 1.40E+03 166332-96-5 Pesticides flutolanil 5.00E-01 O 1.80E+04 169409-94-5 Pesticides fluvalinate 1.00E-02 I 3.50E+02 1
133-07-3 Pesticides folpet 9.00E-02 O 3.20E+03 172178-02-0 Pesticides fomesafen 2.50E-03 O 8.80E+01 1
944-22-9 Pesticides fonofos 2.00E-03 I 7.00E+01 150-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C 3.50E+03 2.10E+01 264-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P 1.60E+04 2
39148-24-8 Pesticides fosetyl-al 2.50E+00 O 8.80E+04 1110-00-9 Furans furan 1.00E-03 I 1.80E+01 2
67-45-8 SVOCs furazolidone 3.80E+00 H 2.30E-01 198-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I 5.30E+01 2
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C 5.80E-01 160568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I 2.90E+01 177182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O 2.10E+02 1
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I 7.00E+00 21071-83-6 SVOCs glyphosate 1.00E-01 I 3.50E+03 7.00E+02 7.00E+02 7.00E+02 1
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTE 0.00E+00 1.50E+01 1.50E+01 1unavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE 0.00E+00 4.00E+00 4.00E+00 1
86-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 1.10E+02 169806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I 1.80E+00 179277-27-3 Pesticides harmony 4.30E-02 O 1.50E+03 1
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 1.80E+01 1.90E-01 0.00E+00 4.00E-01 4.00E-01 11024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 2.30E-01 4.80E-02 0.00E+00 2.00E-01 2.00E-01 2
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X 5.30E+00 287-82-1 SVOCs hexabromobenzene 2.00E-03 I 7.00E+01 1
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I 7.00E+00 1118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 2.80E+01 5.50E-01 0.00E+00 1.00E+00 1.00E+00 1
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 1.80E+01 5.60E+00 2319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 2.80E+02 1.40E-01 1319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 4.90E-01 1608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I 4.90E-01 1
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 1.10E+02 5.00E+01 5.00E+01 5.00E+01 234465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I 1.40E-04 1
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 1.20E+01 1.10E+01 270-30-4 SVOCs hexachlorophene 3.00E-04 I 1.10E+01 1
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06 2110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H 1.10E+03 2591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I 8.80E+01 2
51235-04-2 Pesticides hexazinone 3.30E-02 I 1.20E+03 1302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I 1.50E-01 2
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I 2.90E-01 17647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03 2
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I 1.10E+01 27783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04 2
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P 1.40E+03 1.50E+01 135554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O 8.80E+01 1.40E+01 181335-37-7 Pesticides imazaquin 2.50E-01 I 8.80E+03 1
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES 136734-19-7 Pesticides iprodione 4.00E-02 I 1.40E+03 1
7439-89-6 Metals iron 7.00E-01 P 2.50E+04 1
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 120 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
78-83-1 VOCs isobutyl alcohol 3.00E-01 I 5.30E+03 278-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 3.50E+03 4.60E+02 2
33820-53-0 Pesticides isopropalin 1.50E-02 I 5.30E+02 11832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I 3.50E+03 1
82558-50-7 Pesticides isoxaben 5.00E-02 I 1.80E+03 177501-63-4 Pesticides lactofen 8.00E-03 O 2.80E+02 1
7439-92-1 Metals LEAD LEAD NOTES 0.00E+00 1.50E+01 1.50E+01 158-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 1.10E+01 8.00E-01 2.00E-01 2.00E-01 2.00E-01 1
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O 2.70E+02 17791-03-9 Perchlorates lithium perchlorate 7.00E-04 I 2.50E+01 1
83055-99-6 Pesticides londax 2.00E-01 I 7.00E+03 1121-75-5 Pesticides malathion 2.00E-02 I 7.00E+02 1108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I 1.80E+03 2123-33-1 SVOCs maleic hydrazide 5.00E-01 I 1.80E+04 1109-77-3 VOCs malononitrile 1.00E-04 P 1.80E+00 2
8018-01-7 Pesticides mancozeb 3.00E-02 H 1.10E+03 112427-38-2 Pesticides maneb 5.00E-03 I 1.80E+02 1
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I 1.60E+03 1
950-10-7 Pesticides mephosfolan 9.00E-05 H 3.20E+00 124307-26-4 Pesticides mepiquat chloride 3.00E-02 I 1.10E+03 1
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I 1.10E+01 2.00E+00 2.00E+00 2.00E+00 17439-97-6 Metals mercury 3.00E-04 I 8.57E-05 2.00E+00 2.00E+00 2.00E+00 1
150-50-5 Pesticides merphos 3.00E-05 I 1.10E+00 157837-19-1 Pesticides metalaxyl 6.00E-02 I 2.10E+03 1
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I 1.80E+00 210265-92-6 Pesticides methamidosphos 5.00E-05 I 1.80E+00 1
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I 3.50E+04 2950-37-8 Pesticides methidathion 1.50E-03 O 5.30E+01 1
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I 8.80E+02 199-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C 1.80E+01 172-43-5 Pesticides methoxychlor 5.00E-03 I 1.80E+02 4.00E+01 4.00E+01 4.00E+01 1
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P 1.40E+02 2109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P 8.80E+01 2
79-20-9 VOCs methyl acetate 1.00E+00 X 1.80E+04 296-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H 5.30E+02 278-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I 1.10E+04 2
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H 1.40E+03 222967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I 3.50E+00 1
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I 2.50E+04 290-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P 1.20E+03 1.50E+01 291-57-6 PAHs methyl naphthalene;2- 4.00E-03 I 7.00E+01 2
298-00-0 Pesticides methyl parathion 2.50E-04 I 8.80E+00 125013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H 1.10E+02 2
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H 1.20E+03 21634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C 2.40E+02 2
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I 1.80E+01 199-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P 7.00E+02 9.70E+01 1
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C 6.70E+00 195-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P 2.70E+01 2
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P 7.00E+01 8.80E+00 1101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I 1.90E+01 1
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H 1.80E+02 275-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 1.10E+02 2.20E+02 0.00E+00 5.00E+00 5.00E+00 2
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-04 19016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04 1
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C 5.50E-01 160-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P 1.80E+01 2
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 121 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
51218-45-2 Pesticides metolachlor 1.50E-01 I 5.30E+03 121087-64-9 Pesticides metribuzin 2.50E-02 I 8.80E+02 1
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 7.00E+00 4.90E-02 12212-67-1 Pesticides molinate 2.00E-03 I 7.00E+01 17439-98-7 Metals molybdenum 5.00E-03 I 1.80E+02 1
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I 3.50E+03 4.00E+03 4.00E+03 4.00E+03 1300-76-5 Pesticides naled 2.00E-03 I 7.00E+01 1
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 3.50E+02 215299-99-7 Pesticides napropamide 1.20E-01 O 4.20E+03 1
104-51-8 VOCs n-butylbenzene 5.00E-02 P 8.80E+02 2E715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C 3.90E+02 9.60E-01 1
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 7.00E+02 1.00E+02 112035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C 3.90E+02 5.10E-01 114797-55-8 Nutrients nitrate 1.60E+00 I 5.60E+04 1.00E+04 1.00E+04 1.00E+04 114797-65-0 Nutrients nitrite 1.00E-01 I 3.50E+03 1.00E+03 1.00E+03 1.00E+03 1
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X 3.50E+02 1100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P 1.40E+02 4.40E+01 1
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 3.50E+01 267-20-9 SVOCs nitrofurantoin 7.00E-02 H 2.50E+03 159-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C 6.70E-01 1
556-88-7 SVOCs nitroguanidine 1.00E-01 I 3.50E+03 179-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00 2
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I 3.10E-01 155-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I 2.90E-03 262-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 1.40E-01 8.60E-03 2
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I 8.10E-02 2621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 1.30E-01 1
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 1.80E+02 1759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C 3.20E-02 1
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I 4.00E-02 1684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C 7.30E-03 1930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I 2.10E-01 2
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X 1.80E+00 288-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P 1.60E+01 2.00E+00 299-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P 7.00E+01 2.70E+01 2
84852-15-3 Phenols nonylphenol 127314-13-2 Pesticides norflurazon 1.50E-02 O 5.30E+02 185509-19-9 Pesticides nustar 2.00E-03 O 7.00E+01 132536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I 1.10E+02 1
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I 1.80E+03 1152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H 7.00E+01 1
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O 4.90E+03 1.10E+02 119666-30-9 Pesticides oxadiazon 5.00E-03 I 1.80E+02 123135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I 8.80E+02 2.00E+02 2.00E+02 2.00E+02 142874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O 1.10E+03 1.20E+01 176738-62-0 Herbicides paclobutrazol 1.30E-02 I 4.60E+02 1
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I 1.60E+02 156-38-2 Pesticides parathion 6.00E-03 H 2.10E+02 1
1114-71-2 Pesticides pebulate 5.00E-02 H 8.80E+02 240487-42-1 Pesticides pendimethalin 3.00E-01 O 1.10E+04 1
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H 7.00E+02 3.80E+01 160348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I 3.50E+00 132534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I 7.00E+01 1
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I 2.80E+01 182-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H 1.10E+02 3.40E+00 187-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 1.80E+02 2.20E+00 0.00E+00 1.00E+00 1.00E+00 1
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I 2.50E+01 152645-53-1 Pesticides permethrin 5.00E-02 I 1.80E+03 1
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 122 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
unavailable19 General Chemistry pH pH NOTES 113684-63-4 Pesticides phenmedipham 2.40E-01 O 8.40E+03 1
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 5.30E+03 2106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H 6.70E+03 1108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I 2.10E+02 1
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H 1.40E+02 1.90E+01 162-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I 2.80E+00 190-43-7 Phenols phenylphenol;2- 1.90E-03 H 4.60E+02 1
298-02-2 Pesticides phorate 2.00E-04 H 7.00E+00 175-44-5 VOCs phosgene 3.00E-04 I 8.57E-05 2
732-11-6 Pesticides phosmet 2.00E-02 I 7.00E+02 17803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I 5.30E+00 27664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P 8.60E+05 27723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I 3.50E-01 2
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H 3.50E+04 185-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I 7.00E+04 1
1918-02-1 Herbicides picloram 7.00E-02 I 2.50E+03 5.00E+02 5.00E+02 5.00E+02 129232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O 2.50E+00 136355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C 2.50E-01 2.90E-02 1
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 4.40E-01 0.00E+00 5.00E-01 5.00E-01 1151-50-8 Cyanides potassium cyanide 2.00E-03 I 7.00E+01 1
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I 2.50E+01 1506-61-6 Cyanides potassium silver cyanide 5.00E-03 I 1.80E+02 1
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I 3.20E+02 5.80E+00 126399-36-0 Pesticides profluralin 6.00E-03 H 2.10E+02 1
1610-18-0 Pesticides prometon 1.50E-02 I 5.30E+02 17287-19-6 Pesticides prometryn 4.00E-02 O 1.40E+03 1
23950-58-5 Pesticides pronamide 7.50E-02 I 2.60E+03 11918-16-7 Pesticides propachlor 1.30E-02 I 4.60E+02 1
709-98-8 Pesticides propanil 5.00E-03 I 1.80E+02 12312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O 7.00E+02 2.30E+00 2
107-19-7 VOCs propargyl alcohol 2.00E-03 I 3.50E+01 2139-40-2 Pesticides propazine 2.00E-02 I 7.00E+02 1122-42-9 Pesticides propham 2.00E-02 I 7.00E+02 1
60207-90-1 Pesticides propiconazole 1.00E-01 O 3.50E+03 1123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03 2
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I 3.50E+01 1103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X 1.80E+03 2
57-55-6 Glycols propylene glycol 2.00E+01 P 3.50E+05 26423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05 2
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H 1.20E+04 2107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H 1.20E+04 2
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I 1.80E+00 281335-77-5 Pesticides pursuit 2.50E+00 O 8.80E+04 151630-58-1 Pesticides pydrin 2.50E-02 I 8.80E+02 1
129-00-0 PAHs pyrene 3.00E-02 I 1.10E+03 1110-86-1 VOCs pyridine 1.00E-03 I 1.80E+01 2
13593-03-8 Pesticides quinalphos 5.00E-04 I 1.80E+01 191-22-5 SVOCs quinoline 3.00E+00 I 1.50E-01 2
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTE 1unavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES 0.00E+00 5.00E+00 5.00E+00 1
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 I 1.40E+02 1.10E+01 1E715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A 1
10453-86-8 Pesticides resmethrin 3.00E-02 I 1.10E+03 1299-84-3 Pesticides ronnel 5.00E-02 H 1.80E+03 1
83-79-4 Pesticides rotenone 4.00E-03 I 1.40E+02 178-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O 3.50E+00 1
78587-05-0 Pesticides savey 2.50E-02 I 8.80E+02 1
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 123 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
135-98-8 VOCs sec-butylbenzene 1.00E-01 X 1.80E+03 27783-00-8 Metal compounds selenious acid 5.00E-03 I 1.80E+02 17782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 1.80E+02 5.00E+01 5.00E+01 5.00E+01 1
74051-80-2 Pesticides sethoxydim 1.40E-01 O 4.90E+03 17440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I 1.80E+02 1
506-64-9 Cyanides silver cyanide 1.00E-01 I 3.50E+03 1122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H 1.80E+02 7.30E+00 4.00E+00 4.00E+00 4.00E+00 1
26628-22-8 Metal compounds sodium azide 4.00E-03 I 7.00E+01 2143-33-9 Cyanides sodium cyanide 1.00E-03 I 3.50E+01 1148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H 1.10E+03 3.20E+00 1
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I 7.00E-01 113718-26-8 Metal compounds sodium metavanadate 1.00E-03 H 3.50E+01 1
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I 2.50E+01 17440-24-6 Metals strontium 6.00E-01 I 2.10E+04 1
57-24-9 SVOCs strychnine 3.00E-04 I 1.10E+01 1100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I 3.50E+03 1.00E+02 1.00E+02 1.00E+02 2
88671-89-0 Pesticides systhane 2.50E-02 I 8.80E+02 11746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 2.50E-05 6.70E-06 0.00E+00 3.00E-05 3.00E-05 1
34014-18-1 Pesticides tebuthiuron 7.00E-02 I 2.50E+03 13383-96-8 Pesticides temephos 2.00E-02 H 7.00E+02 15902-51-2 Pesticides terbacil 1.30E-02 I 4.60E+02 1
13071-79-9 SVOCs terbufos 2.50E-05 H 8.80E-01 1886-50-0 Pesticides terbutryn 1.00E-03 I 3.50E+01 1
98-06-6 VOCs tert-butylbenzene 1.00E-01 X 1.80E+03 25436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I 3.50E+00 1
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I 1.10E+01 1630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I 5.30E+02 1.70E+01 2
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 3.50E+02 2.20E+00 2127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 1.10E+02 2.10E+02 0.00E+00 5.00E+00 5.00E+00 2
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I 1.10E+03 15216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H 2.10E+00 4.40E-02 1
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H 1.10E+03 3.60E+01 13689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I 1.80E+01 1
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I 1.80E-03 2811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01 2109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I 1.60E+04 2
1314-32-5 Metal compounds thallic oxide 2.00E-05 S 7.00E-01 1563-68-8 Metal compounds thallium acetate 1.00E-05 X 3.50E-01 1
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X 7.00E-01 17791-12-0 Metal compounds thallium chloride 1.00E-05 X 3.50E-01 1
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X 3.50E-01 112039-52-0 Metal compounds thallium selenite 1.00E-05 S 3.50E-01 1
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X 7.00E-01 17440-28-0 Metals thallium, soluble salts 1.00E-05 X 3.50E-01 5.00E-01 2.00E+00 2.00E+00 1
28249-77-6 Pesticides thiobencarb 1.00E-02 I 3.50E+02 121564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H 1.10E+03 139196-18-4 Pesticides thiofanox 3.00E-04 H 1.10E+01 123564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O 9.50E+02 7.30E+01 1
137-26-8 Pesticides thiram 1.50E-02 O 2.60E+02 27440-31-5 Metals tin 6.00E-01 H 2.10E+04 1
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I 1.80E+01 2.90E+01 1108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 1.40E+03 1.00E+03 1.00E+03 1.00E+03 2
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C 1.10E+01 2584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 1.10E+01 2
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 1.10E+01 295-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X 7.00E+00 4.90E+00 1
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P 7.00E+01 1.50E+01 28001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 3.20E+00 8.00E-01 0.00E+00 3.00E+00 3.00E+00 1
Washington State Department of Ecology - CLARC Groundwater Table (Method C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 124 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
GroundWaterMethod CNoncancer(Eq. 720-1adjusted)
(µg/L)
GroundWaterMethod C
Cancer(Eq. 720-2adjusted)
(µg/L)
GroundWaterMaximum
Contaminant Level Goal40 CFR 141
(µg/L)
GroundWaterFederal
Maximum Contaminant
Level40 CFR 141
(µg/L)
GroundWaterWA State Maximum
Contaminant Level246-290 WAC
(µg/L)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
93-72-1 Herbicides tp;2,4,5- 8.00E-03 I 2.80E+02 5.00E+01 5.00E+01 5.00E+01 1unavailable09 Petroleum tph, diesel range organics 1unavailable10 Petroleum tph, heavy oils 1unavailable11 Petroleum tph, mineral oils 1unavailable25 Petroleum tph: gasoline range organics, benzene present 1unavailable08 Petroleum tph: gasoline range organics, no detectable benzene 1
66841-25-6 Pesticides tralomethrin 7.50E-03 I 2.60E+02 12303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O 8.80E+02 1.20E+01 1
82097-50-5 Pesticides triasulfuron 1.00E-02 I 3.50E+02 1615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I 1.80E+02 1688-73-3 Organotins tributyltin 1
56-35-9 Organotins tributyltin oxide 3.00E-04 I 1.10E+01 110025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS 4.00E+03 4.00E+03 4.00E+03 1
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I 5.30E+05 276-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I 7.00E+02 1.30E+01 2.00E+01 6.00E+01 6.00E+01 1
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H 3.00E+01 1634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X 1.10E+00 1.30E+02 1120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 1.80E+02 1.50E+01 7.00E+01 7.00E+01 7.00E+01 2
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 3.50E+04 2.00E+02 2.00E+02 2.00E+02 279-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 7.00E+01 7.70E+00 3.00E+00 5.00E+00 5.00E+00 279-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 8.80E+00 9.50E+00 0.00E+00 5.00E+00 5.00E+00 275-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I 5.30E+03 295-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I 1.80E+03 288-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 1.80E+01 4.00E+01 293-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I 3.50E+02 1
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I 8.80E+01 296-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M 7.00E+01 1.50E-02 296-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X 5.30E+01 2
58138-08-2 Pesticides tridiphane 3.00E-03 I 1.10E+02 1121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03 2
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 I 2.60E+02 1.10E+02 1unavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES 8.00E+01 8.00E+01 2
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P 1.80E+02 2.20E+01 2526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I 1.80E+02 2
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I 1.80E+02 2108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I 1.80E+02 2
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I 1.10E+03 1479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P 3.50E+01 2
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A 7.00E+00 0.00E+00 3.00E+01 3.00E+01 17440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S 1.80E+02 11314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I 3.20E+02 11929-77-7 Pesticides vernam 1.00E-03 I 1.80E+01 2
50471-44-8 Pesticides vinclozolin 1.20E-03 O 4.20E+01 1108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H 1.80E+04 2
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 5.30E+01 2.90E-01 0.00E+00 2.00E+00 2.00E+00 281-81-2 Pesticides warfarin 3.00E-04 I 5.30E+00 2
8012-95-1 Petroleum white mineral oil 3.00E+00 P 1.10E+05 1108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S 3.50E+03 2
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S 3.50E+03 2106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S 3.50E+03 2
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I 3.50E+03 1.00E+04 1.00E+04 1.00E+04 27440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I 1.10E+04 1
557-21-1 Cyanides zinc cyanide 5.00E-02 I 1.80E+03 11314-84-7 Metal compounds zinc phosphide 3.00E-04 I 1.10E+01 1
12122-67-7 Pesticides zineb 5.00E-02 I 1.80E+03 1
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 125 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
83-32-9 PAHs acenaphthene 6.00E-02 I 6.40E+0230560-19-1 Pesticides acephate 1.20E-03 O
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-0334256-82-1 Pesticides acetochlor 2.00E-02 I
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I75-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-0475-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-0298-86-2 SVOCs acetophenone 1.00E-01 I
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 3.00E+00 3.00E+00
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M79-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 3.50E+03 4.00E-0115972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 1.70E-02 8.20E-05 2.50E+00 3.00E+00 1.90E-03
74223-64-6 Pesticides ally 2.50E-01 I107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P20859-73-8 Metal compounds aluminum phosphide 4.00E-04 I67485-29-4 Pesticides amdro 1.70E-02 O
834-12-8 Pesticides ametryn 9.00E-03 I591-27-5 Phenols aminophenol;m- 8.00E-02 P
33089-61-1 Pesticides amitraz 2.50E-03 I7664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-017790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I7773-06-0 Pesticides ammonium sulfamate 2.00E-01 I
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I120-12-7 PAHs anthracene 3.00E-01 I 2.60E+04
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 1.00E+031314-60-9 Metal compounds antimony pentoxide 5.00E-04 H
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H1332-81-6 Metal compounds antimony tetroxide 4.00E-04 H1309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05
74115-24-5 Pesticides apollo 1.30E-02 I140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 5.80E-03 3.00E-0311097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 1.70E-03 1.00E-0411096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 1.80E+01 9.80E-02 3.60E+02 3.40E+02 1.90E+02 1.50E+027784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C1332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I
76578-14-8 Pesticides assure 9.00E-03 I3337-71-1 Pesticides asulam 3.60E-02 O1912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C
65195-55-3 Pesticides avermectin B1 4.00E-04 I103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I114-26-1 Pesticides baygon 4.00E-03 I
43121-43-3 Pesticides bayleton 3.40E-02 O68359-37-5 Pesticides baythroid 2.50E-02 I
1861-40-1 Pesticides benefin 5.00E-03 O17804-35-2 Pesticides benomyl 5.00E-02 I25057-89-0 Herbicides bentazon 3.00E-02 I
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 126 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
71-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 2.00E+03 2.30E+01108-98-5 SVOCs benzenethiol 1.00E-03 P
92-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 8.90E+01 3.20E-0456-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 2.60E+01 3.50E-02
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I98-07-7 VOCs benzotrichloride 1.30E+01 I
100-51-6 SVOCs benzyl alcohol 1.00E-01 P100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 2.70E+0291-58-7 PAHs beta-chloronaphthalene 8.00E-02 I 1.00E+03
141-66-2 Pesticides bidrin 3.00E-05 O82657-04-3 Pesticides biphenthrin 1.50E-02 I
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 4.20E+04 3.70E+01111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 8.50E-01117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 4.00E+02 3.60E+00542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I
80-05-7 Phenols bisphenol a 5.00E-02 I7440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I75-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 1.40E+04 2.80E+01
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-0175-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 1.40E+04 2.20E+0274-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 9.70E+02
2104-96-3 Pesticides bromophos 5.00E-03 H1689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O1689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C71-36-3 VOCs butanol;n- 1.00E-01 I85-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P 1.30E+03 8.20E+00
2008-41-5 Pesticides butylate 5.00E-02 I85-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O75-60-5 Pesticides cacodylic acid 2.00E-02 A
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I 3.70E+00 1.80E+00 1.00E+00 7.20E-017440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 4.10E+01 3.70E+00 1.80E+00 1.00E+00 7.20E-01
592-01-8 Cyanides calcium cyanide 1.00E-03 I105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I 2.10E+00 2.10E+001563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I56-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 5.50E+02 4.90E+00
55285-14-8 Pesticides carbosulfan 1.00E-02 I5234-68-4 Pesticides carboxin 1.00E-01 I1306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04
302-17-0 VOCs chloral hydrate 1.00E-01 I133-90-4 Herbicides chloramben 1.50E-02 I118-75-2 Pesticides chloranil 4.00E-01 H
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 9.20E-02 1.30E-03 2.40E+00 2.40E+00 4.30E-03 4.30E-03143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I
16887-00-6 Nutrients chloride 8.60E+05 8.60E+05 2.30E+05 2.30E+05
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 127 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
90982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 1.90E+01 1.90E+01 1.10E+01 1.10E+01
506-77-4 Cyanides chlorine cyanide 5.00E-02 I10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I
7758-19-2 Nutrients chlorite 3.00E-02 I75-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01
126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H
95-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P79-11-8 SVOCs chloroacetic acid 2.00E-03 H
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 5.00E+03510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X98-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P
109-69-3 VOCs chlorobutane;1- 4.00E-02 P59-50-7 Phenols chlorocresol 1.00E-01 A75-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+0167-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 6.90E+03 5.60E+0174-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C88-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I 9.70E+01
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C95-49-8 VOCs chlorotoluene;o- 2.00E-02 I
101-21-3 Pesticides chlorpropham 5.00E-02 O2921-88-2 Pesticides chlorpyrifos 1.00E-03 A 8.30E-02 8.30E-02 4.10E-02 4.10E-025598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O60238-56-4 Pesticides chlorthiophos 8.00E-04 H
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I 2.40E+05 5.50E+02 5.70E+02 1.80E+02 7.40E+0118540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 4.90E+02 1.50E+01 1.60E+01 1.00E+01 1.10E+01
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+007440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H 2.90E+03 1.70E+01 1.10E+01
544-92-3 Cyanides copper cyanide 5.00E-03 I108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I21725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 1.60E+03 2.20E+01 2.20E+01 5.20E+00 5.20E+00460-19-5 Cyanides cyanogen 1.00E-03 I506-68-3 Cyanides cyanogen bromide 9.00E-02 I110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I108-91-8 VOCs cyclohexylamine 2.00E-01 I
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O52315-07-8 Pesticides cypermethrin 2.30E-02 O66215-27-8 Pesticides cyromazine 5.00E-01 O
1861-32-1 Herbicides dacthal 1.00E-02 I75-99-0 Herbicides dalapon, sodium salt 3.00E-02 I
39515-41-8 Pesticides danitol 2.50E-02 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 128 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
94-82-6 Pesticides db;2,4- 3.00E-02 O72-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 1.50E-03 5.00E-0472-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 1.50E-02 3.60E-0450-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 2.40E-02 3.60E-04 1.10E+00 1.10E+00 1.00E-03 1.00E-03
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I 5.70E+03 2.90E+038065-48-3 Pesticides demeton 4.00E-05 I 1.00E-01
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I2303-16-4 Pesticides diallate 6.10E-02 H
333-41-5 Pesticides diazinon 7.00E-04 A 1.70E-01 1.70E-0153-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran 1.00E-03 X96-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I 1.40E+04 2.10E+01
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I 2.90E+031918-00-9 Herbicides dicamba 3.00E-02 I3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+0179-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I95-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 4.20E+03
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 3.30E+03 2.20E+01
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 4.60E-0275-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I75-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 1.30E+04 5.90E+01540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 2.30E+04156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I 3.30E+04120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I 1.90E+02
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I78-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 2.50E+04 4.30E+01
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 4.10E+04 3.40E+01
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I77-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P60-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 2.80E-02 8.70E-05 2.50E+00 2.40E-01 1.90E-03 5.60E-0284-66-2 Phthalates diethyl phthalate 8.00E-01 I 2.80E+04
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P617-84-5 SVOCs diethylformamide 1.00E-03 P
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C43222-48-6 Pesticides difenzoquat 8.30E-02 O35367-38-5 Pesticides diflubenzuron 2.00E-02 I
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+011445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I
55290-64-7 Pesticides dimethipin 2.20E-02 O60-51-5 Pesticides dimethoate 2.20E-03 O
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H95-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 129 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
57-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I 5.50E+02576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I99-65-0 Explosives dinitrobenzene;m- 1.00E-04 I
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I 3.50E+0325550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 1.40E+03 5.50E+00606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P
88-85-7 Herbicides dinoseb 1.00E-03 I123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I957-51-7 Pesticides diphenamid 3.00E-02 I122-39-4 Pesticides diphenylamine 1.00E-01 O 8.60E+03122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 3.30E-01
85-00-7 Pesticides diquat 2.20E-03 I1937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C2602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C298-04-4 Pesticides disulfoton 4.00E-05 I505-29-3 SVOCs dithiane;1,4- 1.00E-02 I330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I534-52-1 Phenols DNOC 8.00E-05 X
2439-10-3 Pesticides dodine 2.00E-02 O115-29-7 Pesticides endosulfan 6.00E-03 I 5.80E+01 2.20E-01 5.60E-02
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P959-98-8 Pesticides endosulfan;alpha 2.20E-01 5.60E-02
33213-65-9 Pesticides endosulfan;beta 2.20E-01 5.60E-02145-73-3 Herbicides endothall 2.00E-02 I
72-20-8 Pesticides endrin 3.00E-04 I 2.00E-01 1.80E-01 8.60E-02 2.30E-03 3.60E-027421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03
16672-87-0 Pesticides ethephon 5.00E-03 I563-12-2 Pesticides ethion 5.00E-04 I111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O
60-29-7 VOCs ethyl ether 2.00E-01 I97-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 6.90E+03109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P107-15-3 VOCs ethylene diamine 9.00E-02 P106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C96-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C84-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 130 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
101200-48-0 Pesticides express 8.00E-03 I22224-92-6 Pesticides fenamiphos 2.50E-04 I
2164-17-2 Pesticides fluometuron 1.30E-02 I206-44-0 PAHs fluoranthene 4.00E-02 I 9.00E+01
86-73-7 PAHs fluorene 4.00E-02 I 3.50E+0316984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I59756-60-4 Pesticides fluridone 8.00E-02 I56425-91-3 Pesticides flurprimidol 4.00E-02 O66332-96-5 Pesticides flutolanil 5.00E-01 O69409-94-5 Pesticides fluvalinate 1.00E-02 I
133-07-3 Pesticides folpet 9.00E-02 O72178-02-0 Pesticides fomesafen 2.50E-03 O
944-22-9 Pesticides fonofos 2.00E-03 I50-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C64-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P
39148-24-8 Pesticides fosetyl-al 2.50E+00 O110-00-9 Furans furan 1.00E-03 I
67-45-8 SVOCs furazolidone 3.80E+00 H98-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C60568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I77182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I1071-83-6 SVOCs glyphosate 1.00E-01 I
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 1.00E-0269806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I79277-27-3 Pesticides harmony 4.30E-02 O
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 1.20E-01 1.30E-04 5.20E-01 5.20E-01 3.80E-03 3.80E-031024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 3.00E-03 6.40E-05 5.20E-01 3.80E-03
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X87-82-1 SVOCs hexabromobenzene 2.00E-03 I
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 2.40E-01 4.70E-04
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 9.30E+02 3.00E+01319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 1.60E+02 7.90E-03319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 2.80E-02608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 3.60E+0334465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 2.10E+01 1.90E+0070-30-4 SVOCs hexachlorophene 3.00E-04 I
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I
51235-04-2 Pesticides hexazinone 3.30E-02 I302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I7647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I7783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04 2.00E+00
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P35554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O81335-37-7 Pesticides imazaquin 2.50E-01 I
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione 4.00E-02 I
7439-89-6 Metals iron 7.00E-01 P 1.00E+03
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 131 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
78-83-1 VOCs isobutyl alcohol 3.00E-01 I78-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 1.20E+05 1.60E+03
33820-53-0 Pesticides isopropalin 1.50E-02 I1832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I
82558-50-7 Pesticides isoxaben 5.00E-02 I77501-63-4 Pesticides lactofen 8.00E-03 O
7439-92-1 Metals LEAD LEAD NOTES 6.50E+01 6.50E+01 2.50E+00 2.50E+0058-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 6.00E+00 4.50E-02 2.00E+00 9.50E-01 8.00E-02
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O7791-03-9 Perchlorates lithium perchlorate 7.00E-04 I
83055-99-6 Pesticides londax 2.00E-01 I121-75-5 Pesticides malathion 2.00E-02 I 1.00E-01108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I123-33-1 SVOCs maleic hydrazide 5.00E-01 I109-77-3 VOCs malononitrile 1.00E-04 P
8018-01-7 Pesticides mancozeb 3.00E-02 H12427-38-2 Pesticides maneb 5.00E-03 I
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I
950-10-7 Pesticides mephosfolan 9.00E-05 H24307-26-4 Pesticides mepiquat chloride 3.00E-02 I
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I7439-97-6 Metals mercury 3.00E-04 I 8.57E-05 2.10E+00 1.40E+00 1.20E-02 7.70E-01
150-50-5 Pesticides merphos 3.00E-05 I57837-19-1 Pesticides metalaxyl 6.00E-02 I
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I10265-92-6 Pesticides methamidosphos 5.00E-05 I
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I950-37-8 Pesticides methidathion 1.50E-03 O
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I99-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C72-43-5 Pesticides methoxychlor 5.00E-03 I 8.40E+00 3.00E-02
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P
79-20-9 VOCs methyl acetate 1.00E+00 X96-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H78-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I90-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P91-57-6 PAHs methyl naphthalene;2- 4.00E-03 I
298-00-0 Pesticides methyl parathion 2.50E-04 I25013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H1634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I99-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C95-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H75-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 1.70E+04 5.90E+02
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-049016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C60-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 132 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
51218-45-2 Pesticides metolachlor 1.50E-01 I21087-64-9 Pesticides metribuzin 2.50E-02 I
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 1.00E-032212-67-1 Pesticides molinate 2.00E-03 I7439-98-7 Metals molybdenum 5.00E-03 I
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I300-76-5 Pesticides naled 2.00E-03 I
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 4.90E+0315299-99-7 Pesticides napropamide 1.20E-01 O
104-51-8 VOCs n-butylbenzene 5.00E-02 PE715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 1.10E+03 1.40E+03 4.70E+02 1.60E+02 5.20E+0112035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C14797-55-8 Nutrients nitrate 1.60E+00 I14797-65-0 Nutrients nitrite 1.00E-01 I
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 1.80E+0367-20-9 SVOCs nitrofurantoin 7.00E-02 H59-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C
556-88-7 SVOCs nitroguanidine 1.00E-01 I79-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I55-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I62-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 8.00E+02 4.90E+00
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 8.20E-01
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 9.70E+00759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X88-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P99-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P
84852-15-3 Phenols nonylphenol 2.80E+01 6.60E+0027314-13-2 Pesticides norflurazon 1.50E-02 O85509-19-9 Pesticides nustar 2.00E-03 O32536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I 2.40E+03
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O19666-30-9 Pesticides oxadiazon 5.00E-03 I23135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I42874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O76738-62-0 Herbicides paclobutrazol 1.30E-02 I
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I56-38-2 Pesticides parathion 6.00E-03 H 6.50E-02 6.50E-02 1.30E-02 1.30E-02
1114-71-2 Pesticides pebulate 5.00E-02 H40487-42-1 Pesticides pendimethalin 3.00E-01 O
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I 3.20E-0232534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I82-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 1.20E+03 1.50E+00 2.00E+01 1.90E+01 1.30E+01 1.50E+01
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I52645-53-1 Pesticides permethrin 5.00E-02 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 133 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
unavailable19 General Chemistry pH pH NOTES 6.5 – 913684-63-4 Pesticides phenmedipham 2.40E-01 O
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 5.60E+05106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H62-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I90-43-7 Phenols phenylphenol;2- 1.90E-03 H
298-02-2 Pesticides phorate 2.00E-04 H75-44-5 VOCs phosgene 3.00E-04 I 8.57E-05
732-11-6 Pesticides phosmet 2.00E-02 I7803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I7664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P7723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H85-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I
1918-02-1 Herbicides picloram 7.00E-02 I29232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O36355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 1.00E-04 2.00E+00 1.40E-02 1.40E-02151-50-8 Cyanides potassium cyanide 2.00E-03 I
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I506-61-6 Cyanides potassium silver cyanide 5.00E-03 I
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I26399-36-0 Pesticides profluralin 6.00E-03 H
1610-18-0 Pesticides prometon 1.50E-02 I7287-19-6 Pesticides prometryn 4.00E-02 O
23950-58-5 Pesticides pronamide 7.50E-02 I1918-16-7 Pesticides propachlor 1.30E-02 I
709-98-8 Pesticides propanil 5.00E-03 I2312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O
107-19-7 VOCs propargyl alcohol 2.00E-03 I139-40-2 Pesticides propazine 2.00E-02 I122-42-9 Pesticides propham 2.00E-02 I
60207-90-1 Pesticides propiconazole 1.00E-01 O123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X
57-55-6 Glycols propylene glycol 2.00E+01 P6423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I81335-77-5 Pesticides pursuit 2.50E+00 O51630-58-1 Pesticides pydrin 2.50E-02 I
129-00-0 PAHs pyrene 3.00E-02 I 2.60E+03110-86-1 VOCs pyridine 1.00E-03 I
13593-03-8 Pesticides quinalphos 5.00E-04 I91-22-5 SVOCs quinoline 3.00E+00 I
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 IE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A
10453-86-8 Pesticides resmethrin 3.00E-02 I299-84-3 Pesticides ronnel 5.00E-02 H
83-79-4 Pesticides rotenone 4.00E-03 I78-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O
78587-05-0 Pesticides savey 2.50E-02 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 134 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
135-98-8 VOCs sec-butylbenzene 1.00E-01 X7783-00-8 Metal compounds selenious acid 5.00E-03 I7782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 2.70E+03 2.00E+01 5.00E+00
74051-80-2 Pesticides sethoxydim 1.40E-01 O7440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I 2.60E+04 3.40E+00 3.20E+00
506-64-9 Cyanides silver cyanide 1.00E-01 I122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H
26628-22-8 Metal compounds sodium azide 4.00E-03 I143-33-9 Cyanides sodium cyanide 1.00E-03 I148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I13718-26-8 Metal compounds sodium metavanadate 1.00E-03 H
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I7440-24-6 Metals strontium 6.00E-01 I
57-24-9 SVOCs strychnine 3.00E-04 I100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I
88671-89-0 Pesticides systhane 2.50E-02 I1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 3.60E-07 1.00E-08
34014-18-1 Pesticides tebuthiuron 7.00E-02 I3383-96-8 Pesticides temephos 2.00E-02 H5902-51-2 Pesticides terbacil 1.30E-02 I
13071-79-9 SVOCs terbufos 2.50E-05 H886-50-0 Pesticides terbutryn 1.00E-03 I
98-06-6 VOCs tert-butylbenzene 1.00E-01 X5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 1.00E+04 6.50E+00127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 5.00E+02 1.00E+02
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H3689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I
1314-32-5 Metal compounds thallic oxide 2.00E-05 S563-68-8 Metal compounds thallium acetate 1.00E-05 X
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X7791-12-0 Metal compounds thallium chloride 1.00E-05 X
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X12039-52-0 Metal compounds thallium selenite 1.00E-05 S
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X7440-28-0 Metals thallium, soluble salts 1.00E-05 X 2.20E-01
28249-77-6 Pesticides thiobencarb 1.00E-02 I21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H39196-18-4 Pesticides thiofanox 3.00E-04 H23564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O
137-26-8 Pesticides thiram 1.50E-02 O7440-31-5 Metals tin 6.00E-01 H
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 1.90E+04
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C95-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P8001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 1.80E-02 4.50E-04 7.30E-01 7.30E-01 2.00E-04 2.00E-04
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 135 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod BNoncancer(Eq. 730-1)
(µg/L)
SurfaceWaterMethod B
Cancer(Eq. 730-2)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
93-72-1 Herbicides tp;2,4,5- 8.00E-03 Iunavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin 7.50E-03 I2303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O
82097-50-5 Pesticides triasulfuron 1.00E-02 I615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I688-73-3 Organotins tributyltin 4.60E-01 7.20E-02
56-35-9 Organotins tributyltin oxide 3.00E-04 I10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I76-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 2.30E+02 2.00E+00
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 9.30E+0579-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 2.30E+03 2.50E+0179-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 1.20E+02 4.90E+0075-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 1.70E+01 3.90E+0093-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I96-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M96-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X
58138-08-2 Pesticides tridiphane 3.00E-03 I121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 Iunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A7440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S1314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I1929-77-7 Pesticides vernam 1.00E-03 I
50471-44-8 Pesticides vinclozolin 1.20E-03 O108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 6.60E+03 3.70E+0081-81-2 Pesticides warfarin 3.00E-04 I
8012-95-1 Petroleum white mineral oil 3.00E+00 P108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I7440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I 1.70E+04 1.10E+02 1.20E+02 1.00E+02 1.20E+02
557-21-1 Cyanides zinc cyanide 5.00E-02 I1314-84-7 Metal compounds zinc phosphide 3.00E-04 I
12122-67-7 Pesticides zineb 5.00E-02 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 136 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes83-32-9 PAHs acenaphthene
30560-19-1 Pesticides acephate75-07-0 VOCs acetaldehyde
34256-82-1 Pesticides acetochlor67-64-1 VOCs acetone75-86-5 VOCs acetone cyanohydrin75-05-8 VOCs acetonitrile98-86-2 SVOCs acetophenone
62476-59-9 Herbicides acifluorfen, sodium107-02-8 VOCs acrolein
79-06-1 VOCs acrylamide79-10-7 VOCs acrylic acid
107-13-1 VOCs acrylonitrile15972-60-8 Pesticides alachlor
1596-84-5 Pesticides alar116-06-3 Pesticides (Carbamate) aldicarb
1646-88-4 Pesticides (Carbamate) aldicarb sulfone309-00-2 Pesticides aldrin
74223-64-6 Pesticides ally107-18-6 VOCs allyl alcohol107-05-1 VOCs allyl chloride
7429-90-5 Metals aluminum20859-73-8 Metal compounds aluminum phosphide67485-29-4 Pesticides amdro
834-12-8 Pesticides ametryn591-27-5 Phenols aminophenol;m-
33089-61-1 Pesticides amitraz7664-41-7 Nutrients AMMONIA AMMONIA NOTES7790-98-9 Perchlorates ammonium perchlorate7773-06-0 Pesticides ammonium sulfamate
62-53-3 SVOCs aniline120-12-7 PAHs anthracene
7440-36-0 Metals antimony1314-60-9 Metal compounds antimony pentoxide
28300-74-5 Metal compounds antimony potassium tartrate1332-81-6 Metal compounds antimony tetroxide1309-64-4 Metal compounds antimony trioxide
74115-24-5 Pesticides apollo140-57-8 SVOCs aramite
12674-11-2 PCBs aroclor 101611097-69-1 PCBs aroclor 125411096-82-5 PCBs aroclor 1260
7440-38-2 Metals arsenic, inorganic7784-42-1 Gases arsine1332-21-4 Fibers ASBESTOS ASBESTOS NOTE
76578-14-8 Pesticides assure3337-71-1 Pesticides asulam1912-24-9 Pesticides atrazine
65195-55-3 Pesticides avermectin B1103-33-3 Pesticides azobenzene
7440-39-3 Metals barium and compounds114-26-1 Pesticides baygon
43121-43-3 Pesticides bayleton68359-37-5 Pesticides baythroid
1861-40-1 Pesticides benefin17804-35-2 Pesticides benomyl25057-89-0 Herbicides bentazon
100-52-7 SVOCs benzaldehyde
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.10E+02 3.00E+01 7.00E+01 1.10E+02 3.00E+01 9.00E+01 2.42E+02
1.00E+00 3.00E+00 1.10E+00 4.00E+02
1.90E-02 6.10E-02 2.80E-02 7.00E+00 3.00E+01
5.70E-06 4.10E-08 7.70E-07 7.10E-01 1.30E+00 1.90E-03 5.80E-06 4.10E-08 7.70E-07 4.67E+03
2.30E+02 3.50E+01
3.10E+03 1.00E+02 3.00E+02 4.60E+03 1.00E+02 4.00E+02 3.00E+011.20E+01 6.00E+00 5.60E+00 1.80E+02 9.00E+01 6.40E+02 1.00E+00
3.12E+043.12E+04
1.00E+01 1.80E-02 1.80E-02 6.90E+01 6.90E+01 3.60E+01 3.60E+01 1.00E+01 1.40E-01 1.40E-01 4.40E+01
7.00E+06 7.00E+06
1.00E+03
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes71-43-2 VOCs BENZENE
108-98-5 SVOCs benzenethiol92-87-5 SVOCs benzidine56-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT98-07-7 VOCs benzotrichloride
100-51-6 SVOCs benzyl alcohol100-44-7 VOCs benzyl chloride
7440-41-7 Metals beryllium91-58-7 PAHs beta-chloronaphthalene
141-66-2 Pesticides bidrin82657-04-3 Pesticides biphenthrin
92-52-4 PAHs biphenyl;1,1-108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether111-44-4 SVOCs bis(2-chloroethyl)ether117-81-7 Phthalates bis(2-ethylhexyl) phthalate542-88-1 VOCs bis(chloromethyl)ether
80-05-7 Phenols bisphenol a7440-42-8 Metals boron
15541-45-4 Pesticides bromate79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene75-27-4 VOCs bromodichloromethane TTHM NOTES
593-60-2 VOCs bromoethene75-25-2 VOCs bromoform TTHM NOTES74-83-9 VOCs bromomethane
2104-96-3 Pesticides bromophos1689-84-5 Pesticides bromoxynil1689-99-2 Pesticides bromoxynil octanoate
106-99-0 VOCs butadiene;1,3-71-36-3 VOCs butanol;n-85-68-7 Phthalates butyl benzyl phthalate
2008-41-5 Pesticides butylate85-70-1 Phthalates butylphthalyl butylglycolate94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)-75-60-5 Pesticides cacodylic acid
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES
592-01-8 Cyanides calcium cyanide105-60-2 SVOCs caprolactam
2425-06-1 Pesticides captafol133-06-2 Pesticides captan
63-25-2 Pesticides (Carbamate) carbaryl1563-66-2 Pesticides (Carbamate) carbofuran
75-15-0 VOCs carbon disulfide56-23-5 VOCs carbon tetrachloride
55285-14-8 Pesticides carbosulfan5234-68-4 Pesticides carboxin1306-38-3 Metals cerium oxide and cerium compounds
302-17-0 VOCs chloral hydrate133-90-4 Herbicides chloramben118-75-2 Pesticides chloranil
12789-03-6 Pesticides chlordane143-50-0 Pesticides chlordecone (kepone)
16887-00-6 Nutrients chloride
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
4.40E-01 5.80E-01 1.60E+00 1.60E+01 5.20E+00
2.00E-05 1.40E-04 2.30E-05 1.10E-02 8.75E+011.40E-02 1.60E-04 1.20E-03 2.10E-02 1.60E-04 1.30E-03 3.00E+011.40E-03 1.60E-05 1.20E-04 2.10E-03 1.60E-05 1.30E-04 3.00E+011.40E-02 1.60E-04 1.20E-03 2.10E-02 1.60E-04 1.30E-03 3.00E+011.40E-02 1.60E-03 1.20E-02 2.10E-01 1.60E-03 1.30E-02 3.00E+01
1.90E+011.70E+02 1.00E+02 8.00E+02 1.80E+02 1.00E+02 1.00E+03 2.02E+02
4.00E+02 2.00E+02 9.00E+02 4.00E+03 2.47E+002.00E-02 3.00E-02 6.00E-02 2.20E+00 6.90E+002.30E-01 4.50E-02 3.20E-01 2.50E-01 4.60E-02 3.70E-01 1.30E+02
1.50E-04 1.70E-02
7.70E-01 7.30E-01 9.50E-01 3.60E+00 2.80E+00 2.70E+01 3.75E+00
5.80E+00 4.60E+00 7.00E+00 2.70E+01 1.20E+01 1.20E+02 3.75E+005.20E+02 3.00E+02 1.00E+02 2.40E+03 1.00E+04 3.75E+00
5.60E-01 1.30E-02 1.00E-01 5.80E-01 1.30E-02 1.00E-01 4.14E+02
4.20E+01 3.30E+01 9.30E+00 7.90E+00 6.40E+014.20E+01 3.30E+01 9.30E+00 7.90E+00 6.40E+01
1.60E+00
2.00E-01 4.00E-01 3.50E-01 5.00E+00 1.88E+01
9.30E-05 2.20E-05 3.10E-04 9.00E-02 9.00E-02 4.00E-03 4.00E-03 9.30E-05 2.20E-05 3.20E-04 1.41E+04
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 138 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes90982-32-4 Pesticides chlorimuron-ethyl
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS506-77-4 Cyanides chlorine cyanide
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS7758-19-2 Nutrients chlorite
75-68-3 VOCs chloro-1,1-difluoroethane;1-126-99-8 VOCs chloro-1,3-butadiene;2-
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4-95-69-2 SVOCs chloro-2-methylaniline;4-79-11-8 SVOCs chloroacetic acid
532-27-4 SVOCs chloroacetophenone;2-106-47-8 SVOCs chloroaniline;p-108-90-7 VOCs chlorobenzene510-15-6 Pesticides chlorobenzilate
74-11-3 Pesticides chlorobenzoic acid;p-98-56-6 VOCs chlorobenzotrifluoride;4-
109-69-3 VOCs chlorobutane;1-59-50-7 Phenols chlorocresol75-45-6 VOCs chlorodifluoromethane67-66-3 VOCs chloroform TTHM NOTES74-87-3 VOCs chloromethane
107-30-2 VOCs chloromethyl methyl ether88-73-3 Pesticides chloronitrobenzene;o-
100-00-5 Pesticides chloronitrobenzene;p-95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT
1897-45-6 Pesticides chlorothalonil95-49-8 VOCs chlorotoluene;o-
101-21-3 Pesticides chlorpropham2921-88-2 Pesticides chlorpyrifos5598-13-0 Pesticides chlorpyrifos-methyl
64902-72-3 Pesticides chlorsulfuron60238-56-4 Pesticides chlorthiophos
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt
E649830 VOCs coke oven emissions7440-50-8 Metals COPPER HARDNESS - DEPENDENT
544-92-3 Cyanides copper cyanide108-39-4 Phenols cresol;m-
95-48-7 Phenols cresol;o-106-44-5 Phenols cresol;p-123-73-9 VOCs crotonaldehyde
98-82-8 VOCs cumene21725-46-2 Pesticides cyanazine
57-12-5 Cyanides CYANIDE CYANIDE NOTES460-19-5 Cyanides cyanogen506-68-3 Cyanides cyanogen bromide110-82-7 VOCs cyclohexane108-94-1 VOCs cyclohexanone108-91-8 VOCs cyclohexylamine
68085-85-8 Pesticides cyhalothrin/karate52315-07-8 Pesticides cypermethrin66215-27-8 Pesticides cyromazine
1861-32-1 Herbicides dacthal75-99-0 Herbicides dalapon, sodium salt
39515-41-8 Pesticides danitol
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.30E+01 1.30E+01 7.50E+00 7.50E+00
3.80E+02 1.00E+02 1.00E+02 8.90E+02 2.00E+02 8.00E+02 1.03E+01
3.60E+01 5.00E+02 3.60E+01 2.00E+03
2.60E+02 1.00E+02 6.00E+01 1.20E+03 6.00E+02 2.00E+03 3.75E+003.75E+00
1.50E+01 3.00E+01 1.70E+01 8.00E+02 1.34E+02
1.10E-02 1.10E-02 5.60E-03 5.60E-03
1.60E+011.10E+03 1.10E+03 5.00E+01 5.00E+01 1.60E+01
1.40E+00 1.60E-02 1.20E-01 2.10E+00 1.60E-02 1.30E-01 3.00E+01
1.30E+03 1.30E+03 4.80E+00 4.80E+00 3.10E+00 3.10E+00 3.60E+01
1.90E+01 9.00E+00 4.00E+00 1.00E+00 1.00E+00 1.00E+00 1.00E+00 2.70E+02 1.00E+02 4.00E+02 1.00E+00
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 139 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes94-82-6 Pesticides db;2,4-72-54-8 Pesticides ddd72-55-9 Pesticides dde50-29-3 Pesticides ddt
1163-19-5 PBDEs decabromodiphenyl ether8065-48-3 Pesticides demeton
103-23-1 Phthalates di(2-ethylhexyl)adipate2303-16-4 Pesticides diallate
333-41-5 Pesticides diazinon53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran96-12-8 Pesticides dibromo-3-chloropropane;1,2-
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4-124-48-1 VOCs dibromochloromethane TTHM NOTES
84-74-2 Phthalates di-butyl phthalate1918-00-9 Herbicides dicamba3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4-79-43-6 SVOCs dichloroacetic acid95-50-1 VOCs dichlorobenzene;1,2-
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4-
91-94-1 SVOCs dichlorobenzidine;3,3'-75-71-8 VOCs dichlorodifluoromethane75-34-3 VOCs dichloroethane;1,1-
107-06-2 VOCs dichloroethane;1,2-540-59-0 VOCs dichloroethylene,1,2- (mixed isomers)
75-35-4 VOCs dichloroethylene;1,1-156-59-2 VOCs dichloroethylene;1,2-,cis156-60-5 VOCs dichloroethylene;1,2-,trans120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4-78-87-5 VOCs dichloropropane;1,2-
616-23-9 SVOCs dichloropropanol;2,3-542-75-6 VOCs dichloropropene;1,3-
62-73-7 Pesticides dichlorvos77-73-6 VOCs dicyclopentadiene60-57-1 Pesticides dieldrin84-66-2 Phthalates diethyl phthalate
112-34-5 Glycols diethylene glycol monobutyl ether111-90-0 Glycols diethylene glycol monoethyl ether617-84-5 SVOCs diethylformamide
56-53-1 SVOCs diethylstilbesterol43222-48-6 Pesticides difenzoquat35367-38-5 Pesticides diflubenzuron
75-37-6 VOCs difluoroethane;1,1-1445-75-6 VOCs diisopropyl methylphosphonate
55290-64-7 Pesticides dimethipin60-51-5 Pesticides dimethoate
119-90-4 SVOCs dimethoxybenzidine;3,3'-131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4-95-68-1 SVOCs dimethylaniline;2,4-
121-69-7 VOCs dimethylaniline;N,N-119-93-7 SVOCs dimethylbenzidine;3,3'-
68-12-2 VOCs dimethylformamide;N,N-
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
3.60E-05 7.90E-06 1.20E-04 3.60E-05 7.90E-06 1.20E-04 5.36E+045.10E-05 8.80E-07 1.80E-05 5.10E-05 8.80E-07 1.80E-05 5.36E+042.50E-05 1.20E-06 3.00E-05 1.30E-01 1.30E-01 1.00E-03 1.00E-03 2.50E-05 1.20E-06 3.00E-05 5.36E+04
3.20E+001.00E-01
8.20E-01 8.20E-011.40E-03 1.60E-05 1.20E-04 2.10E-03 1.60E-05 1.30E-04 3.00E+01
6.50E-01 6.00E-01 8.00E-01 3.00E+00 2.20E+00 2.10E+01 3.75E+004.50E+02 8.00E+00 2.00E+01 5.10E+02 8.00E+00 3.00E+01 8.90E+01
2.00E+03 7.00E+02 1.00E+03 2.50E+03 8.00E+02 3.00E+03 5.56E+011.30E+01 2.00E+00 7.00E+00 1.60E+01 2.00E+00 1.00E+014.60E+02 2.00E+02 3.00E+02 5.80E+02 2.00E+02 9.00E+02 5.56E+013.10E-03 4.90E-02 3.30E-03 1.50E-01 3.12E+02
9.30E+00 8.90E+00 9.90E+00 1.20E+02 7.30E+01 6.50E+02 1.20E+00
1.20E+03 7.00E+02 3.00E+02 4.10E+03 4.00E+03 2.00E+04 5.60E+00
6.00E+02 2.00E+02 1.00E+02 5.80E+03 1.00E+03 4.00E+03 1.58E+002.50E+01 1.00E+01 1.00E+01 3.40E+01 1.00E+01 6.00E+01 4.07E+01
1.30E+03 1.20E+047.10E-01 9.00E-01 3.10E+00 3.10E+01 4.11E+00
2.40E-01 2.20E-01 2.70E-01 2.00E+00 1.20E+00 1.20E+01 1.91E+00
6.10E-06 7.00E-08 1.20E-06 7.10E-01 7.10E-01 1.90E-03 1.90E-03 6.10E-06 7.00E-08 1.20E-06 4.67E+034.20E+03 2.00E+02 6.00E+02 5.00E+03 2.00E+02 6.00E+02 7.30E+01
9.20E+04 6.00E+02 2.00E+03 1.30E+05 6.00E+02 2.00E+03 3.60E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 140 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes57-14-7 VOCs dimethylhydrazine;1,1-
540-73-8 VOCs dimethylhydrazine;1,2-105-67-9 Phenols dimethylphenol;2,4-576-26-1 Phenols dimethylphenol;2,6-
95-65-8 Phenols dimethylphenol;3,4-99-65-0 Explosives dinitrobenzene;m-
528-29-0 SVOCs dinitrobenzene;o-100-25-4 SVOCs dinitrobenzene;p-131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6-
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6-121-14-2 Explosives dinitrotoluene;2,4-606-20-2 Explosives dinitrotoluene;2,6-117-84-0 Phthalates di-n-octyl phthalate
88-85-7 Herbicides dinoseb123-91-1 VOCs dioxane;1,4-957-51-7 Pesticides diphenamid122-39-4 Pesticides diphenylamine122-66-7 SVOCs diphenylhydrazine;1,2-
85-00-7 Pesticides diquat1937-37-7 Dyes direct black 382602-46-2 Dyes direct blue 6
16071-86-6 Dyes direct brown 95298-04-4 Pesticides disulfoton505-29-3 SVOCs dithiane;1,4-330-54-1 Pesticides (Carbamate) diuron534-52-1 Phenols DNOC
2439-10-3 Pesticides dodine115-29-7 Pesticides endosulfan
1031-07-8 Pesticides endosulfan sulfate959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall
72-20-8 Pesticides endrin7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin106-88-7 VOCs epoxybutane
16672-87-0 Pesticides ethephon563-12-2 Pesticides ethion111-15-9 VOCs ethoxyethanol acetate;2-110-80-5 VOCs ethoxyethanol;2-141-78-6 VOCs ethyl acetate140-88-5 VOCs ethyl acrylate
75-00-3 VOCs ethyl chloride759-94-4 Pesticides ethyl dipropylthiocarbamate;S-
60-29-7 VOCs ethyl ether97-63-2 VOCs ethyl methacrylate
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate100-41-4 VOCs ethylbenzene109-78-4 SVOCs ethylene cyanohydrin107-15-3 VOCs ethylene diamine106-93-4 VOCs ethylene dibromide (EDB)107-21-1 VOCs ethylene glycol111-76-2 Glycols ethylene glycol monobutyl ether (EGBE)
75-21-8 VOCs ethylene oxide96-45-7 SVOCs ethylene thiourea84-72-0 Phthalates ethylphthalyl ethylglycolate
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
8.50E+01 1.00E+02 9.70E+01 3.00E+03 9.38E+01
6.00E+01 3.00E+01 1.00E+01 6.10E+02 1.00E+02 3.00E+02 1.50E+001.00E+01 1.00E+03
3.90E-02 4.90E-02 1.80E-01 1.70E+00 3.80E+00
3.00E+011.50E-02 1.00E-02 3.00E-02 2.30E-02 2.00E-02 2.00E-01 2.49E+01
7.10E+00 3.00E+00 2.00E+00 2.50E+01 7.00E+00 3.00E+01
3.40E-02 8.70E-03 2.70E+029.70E+00 9.00E+00 2.00E+01 1.00E+01 4.00E+019.70E+00 6.00E+00 2.00E+01 3.40E-02 8.70E-03 1.00E+01 7.00E+00 3.00E+019.70E+00 2.00E+01 3.40E-02 8.70E-03 1.00E+01 4.00E+01
3.40E-02 2.00E-03 3.00E-02 3.70E-02 3.70E-02 2.30E-03 2.30E-03 3.50E-02 2.00E-03 3.00E-02 3.97E+033.40E-02 1.00E+00 3.50E-02 1.00E+00
2.00E+02 2.90E+01 6.80E+01 2.70E+02 3.10E+01 1.30E+02 3.75E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 141 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes101200-48-0 Pesticides express
22224-92-6 Pesticides fenamiphos2164-17-2 Pesticides fluometuron
206-44-0 PAHs fluoranthene86-73-7 PAHs fluorene
16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES59756-60-4 Pesticides fluridone56425-91-3 Pesticides flurprimidol66332-96-5 Pesticides flutolanil69409-94-5 Pesticides fluvalinate
133-07-3 Pesticides folpet72178-02-0 Pesticides fomesafen
944-22-9 Pesticides fonofos50-00-0 VOCs formaldehyde64-18-6 VOCs formic acid
39148-24-8 Pesticides fosetyl-al110-00-9 Furans furan
67-45-8 SVOCs furazolidone98-01-1 VOCs furfural
531-82-8 SVOCs furium60568-05-0 Pesticides furmecyclox77182-82-2 Pesticides glufosinate-ammonium
765-34-4 VOCs glycidaldehyde1071-83-6 SVOCs glyphosate
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion69806-40-2 Pesticides haloxyfop-methyl79277-27-3 Pesticides harmony
76-44-8 Pesticides heptachlor1024-57-3 Pesticides heptachlor epoxide
142-82-5 VOCs heptane;n-87-82-1 SVOCs hexabromobenzene
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'-118-74-1 Pesticides hexachlorobenzene
87-68-3 VOCs hexachlorobutadiene319-84-6 Pesticides hexachlorocyclohexane;alpha319-85-7 Pesticides hexachlorocyclohexane;beta-608-73-1 SVOCs hexachlorocyclohexane;technical
77-47-4 Pesticides hexachlorocyclopentadiene34465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture
67-72-1 VOCs hexachloroethane70-30-4 SVOCs hexachlorophene
822-06-0 VOCs hexamethylene diisocyanate;1,6-110-54-3 VOCs hexane;n-591-78-6 VOCs hexanone;2-
51235-04-2 Pesticides hexazinone302-01-2 VOCs hydrazine
10034-93-2 SVOCs hydrazine sulfate7647-01-0 VOCs hydrogen chloride
74-90-8 Cyanides hydrogen cyanide7783-06-4 VOCs hydrogen sulfide
123-31-9 SVOCs hydroquinone35554-44-0 Pesticides imazalil81335-37-7 Pesticides imazaquin
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione
7439-89-6 Metals iron
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.60E+01 6.00E+00 2.00E+01 1.60E+01 6.00E+00 2.00E+01 1.15E+034.20E+02 1.00E+01 5.00E+01 6.10E+02 1.00E+01 7.00E+01 3.00E+01
1.00E-02
9.90E-06 3.40E-07 5.90E-06 5.30E-02 5.30E-02 3.60E-03 3.60E-03 1.00E-05 3.40E-07 5.90E-06 1.12E+047.40E-06 2.40E-06 3.20E-05 5.30E-02 3.60E-03 7.40E-06 2.40E-06 3.20E-05 1.12E+04
5.10E-05 5.00E-06 7.90E-05 5.20E-05 5.00E-06 7.90E-05 8.69E+036.90E-01 1.00E-02 1.00E-02 4.10E+00 1.00E-02 1.00E-02 2.78E+005.00E-04 4.80E-05 3.60E-04 5.60E-04 4.80E-05 3.90E-04 1.30E+021.80E-03 1.30E-03 8.00E-03 2.00E-03 1.40E-03 1.40E-02 1.30E+02
6.60E-03 1.00E-021.50E+02 1.00E+00 4.00E+00 6.30E+02 1.00E+00 4.00E+00 4.34E+00
1.10E-01 2.00E-02 1.00E-01 1.30E-01 2.00E-02 1.00E-01 8.69E+01
2.00E+00
1.40E-02 1.60E-04 1.20E-03 2.10E-02 1.60E-04 1.30E-03 3.00E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 142 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes78-83-1 VOCs isobutyl alcohol78-59-1 SVOCs isophorone
33820-53-0 Pesticides isopropalin1832-54-8 SVOCs isopropyl methyl phosphonic acid
82558-50-7 Pesticides isoxaben77501-63-4 Pesticides lactofen
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane
330-55-2 Pesticides (Carbamate) linuron7791-03-9 Perchlorates lithium perchlorate
83055-99-6 Pesticides londax121-75-5 Pesticides malathion108-31-6 SVOCs maleic anhydride123-33-1 SVOCs maleic hydrazide109-77-3 VOCs malononitrile
8018-01-7 Pesticides mancozeb12427-38-2 Pesticides maneb
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES
950-10-7 Pesticides mephosfolan24307-26-4 Pesticides mepiquat chloride
7487-94-7 Metal compounds mercuric chloride7439-97-6 Metals mercury
150-50-5 Pesticides merphos57837-19-1 Pesticides metalaxyl
126-98-7 VOCs methacrylonitrile10265-92-6 Pesticides methamidosphos
67-56-1 VOCs methanol950-37-8 Pesticides methidathion
16752-77-5 Pesticides (Carbamate) methomyl99-59-2 SVOCs methoxy-5-nitroaniline;2-72-43-5 Pesticides methoxychlor
110-49-6 VOCs methoxyethanol acetate;2-109-86-4 VOCs methoxyethanol;2-
79-20-9 VOCs methyl acetate96-33-3 VOCs methyl acrylate78-93-3 VOCs methyl ethyl ketone
108-10-1 VOCs methyl isobutyl ketone22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES
80-62-6 VOCs methyl methacrylate90-12-0 PAHs methyl naphthalene;1-91-57-6 PAHs methyl naphthalene;2-
298-00-0 Pesticides methyl parathion25013-15-4 VOCs methyl styrene
98-83-9 VOCs methyl styrene, alpha1634-04-4 VOCs methyl tert-butyl ether
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2-99-55-8 SVOCs methyl-5-nitroaniline;2-
636-21-5 SVOCs methylaniline hydrochloride;2-95-53-4 VOCs methylaniline;2-
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'-101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'-
74-95-3 VOCs methylene bromide75-09-2 VOCs methylene chloride
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI)9016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI)
101-77-9 SVOCs methylenebisbenzenamine;4,4-60-34-4 VOCs methylhydrazine
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
2.70E+01 3.40E+01 1.10E+02 1.80E+03 4.38E+00
2.10E+02 2.10E+02 8.10E+00 8.10E+001.50E+01 4.30E-01 4.20E+00 1.60E-01 1.60E-01 1.70E+01 4.30E-01 4.40E+00 1.30E+02
1.00E-01
5.00E+01 1.00E+025.00E+01 1.00E+02
1.80E+00 1.80E+00 2.50E-02 9.40E-01
2.00E-02 3.00E-02 2.00E-02 1.55E+03
1.00E+00 3.00E-02 3.00E-01
1.60E+01 1.00E+01 2.00E+01 2.50E+02 1.00E+02 1.00E+03 9.00E-01
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 143 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes51218-45-2 Pesticides metolachlor21087-64-9 Pesticides metribuzin
2385-85-5 Pesticides mirex2212-67-1 Pesticides molinate7439-98-7 Metals molybdenum
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS300-76-5 Pesticides naled
91-20-3 PAHs naphthalene15299-99-7 Pesticides napropamide
104-51-8 VOCs n-butylbenzeneE715532 Metals nickel refinery dust
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT12035-72-2 Metal compounds nickel subsulfide14797-55-8 Nutrients nitrate14797-65-0 Nutrients nitrite
88-74-4 SVOCs nitroaniline, 2-100-01-6 SVOCs nitroaniline, 4-
98-95-3 Explosives nitrobenzene67-20-9 SVOCs nitrofurantoin59-87-0 SVOCs nitrofurazone
556-88-7 SVOCs nitroguanidine79-46-9 VOCs nitropropane;2-
1116-54-7 SVOCs nitrosodiethanolamine;N-55-18-5 SVOCs nitrosodiethylamine;N-62-75-9 SVOCs nitrosodimethylamine;N-
924-16-3 VOCs nitroso-di-n-butylamine;N-621-64-7 SVOCs nitroso-di-n-propylamine;N-
86-30-6 SVOCs nitrosodiphenylamine;N-759-73-9 SVOCs nitroso-n-ethylurea;n-
10595-95-6 SVOCs nitroso-N-methylethylamine;N-684-93-5 SVOCs nitroso-n-methylurea,n-930-55-2 SVOCs nitrosopyrrolidine;N-
99-08-1 Explosives nitrotoluene, m-88-72-2 Explosives nitrotoluene, o-99-99-0 Explosives nitrotoluene, p-
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon85509-19-9 Pesticides nustar32536-52-0 PBDEs octabromodiphenyl ether
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine152-16-9 SVOCs octamethylpyrophosphoramide
19044-88-3 Pesticides oryzalin19666-30-9 Pesticides oxadiazon23135-22-0 Pesticides (Carbamate) oxamyl42874-03-3 Pesticides oxyfluorfen76738-62-0 Herbicides paclobutrazol
1910-42-5 Pesticides Paraquat Dichloride56-38-2 Pesticides parathion
1114-71-2 Pesticides pebulate40487-42-1 Pesticides pendimethalin
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5-60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5-32534-81-9 PBDEs pentabromodiphenyl ethers
608-93-5 SVOCs pentachlorobenzene82-68-8 Pesticides pentachloronitrobenzene87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT
14797-73-0 Perchlorates perchlorate and perchlorate salts52645-53-1 Pesticides permethrin
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.00E-03
1.05E+01
1.50E+02 8.00E+01 6.10E+02 7.40E+01 7.40E+01 8.20E+00 8.20E+00 1.90E+02 1.00E+02 4.60E+03 4.70E+01
1.00E+04
5.50E+01 3.00E+01 1.00E+01 3.20E+02 1.00E+02 6.00E+02 2.89E+00
8.00E-04 1.20E+006.50E-04 6.90E-04 3.40E-01 3.00E+00 2.60E-02
6.30E-03 2.20E-014.40E-03 5.00E-03 5.80E-02 5.10E-01 1.13E+006.20E-01 3.30E+00 6.90E-01 6.00E+00 1.36E+02
1.60E-02 3.40E+01
7.00E+00 1.70E+00
3.20E+00
8.10E+03
1.00E-01 1.00E-01
4.60E-02 2.00E-03 3.00E-02 1.30E+01 1.30E+01 7.90E+00 7.90E+00 1.00E-01 2.00E-03 4.00E-02 1.10E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 144 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notesunavailable19 General Chemistry pH pH NOTES
13684-63-4 Pesticides phenmedipham108-95-2 Phenols phenol106-50-3 SVOCs phenylenediamine, p-108-45-2 SVOCs phenylenediamine;m-
95-54-5 SVOCs phenylenediamine;o-62-38-4 Metals (organometallic) phenylmercuric acetate90-43-7 Phenols phenylphenol;2-
298-02-2 Pesticides phorate75-44-5 VOCs phosgene
732-11-6 Pesticides phosmet7803-51-2 Gases phosphine7664-38-2 SVOCs phosphoric acid7723-14-0 Nonmetal inorganics phosphorus
100-21-0 Phthalates phthalic acid;p-85-44-9 Phthalates phthalic anhydride
1918-02-1 Herbicides picloram29232-93-7 Pesticides pirimiphos-methyl36355-01-8 PBBs polybrominated biphenyls
1336-36-3 PCBs polychlorinated biphenyls (PCBs)151-50-8 Cyanides potassium cyanide
7778-74-7 Perchlorates potassium perchlorate506-61-6 Cyanides potassium silver cyanide
67747-09-5 Pesticides prochloraz (not in HSDB)26399-36-0 Pesticides profluralin
1610-18-0 Pesticides prometon7287-19-6 Pesticides prometryn
23950-58-5 Pesticides pronamide1918-16-7 Pesticides propachlor
709-98-8 Pesticides propanil2312-35-8 Pesticides propargite
107-19-7 VOCs propargyl alcohol139-40-2 Pesticides propazine122-42-9 Pesticides propham
60207-90-1 Pesticides propiconazole123-38-6 VOCs propionaldehyde
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2-103-65-1 VOCs propylbenzene;n-
57-55-6 Glycols propylene glycol6423-43-4 Glycols propylene glycol dinitrate;1,2-
52125-53-8 Glycols propylene glycol monoethyl ether107-98-2 Glycols propylene glycol monomethyl ether
75-56-9 VOCs propylene oxide81335-77-5 Pesticides pursuit51630-58-1 Pesticides pydrin
129-00-0 PAHs pyrene110-86-1 VOCs pyridine
13593-03-8 Pesticides quinalphos91-22-5 SVOCs quinoline
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdxE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE
10453-86-8 Pesticides resmethrin299-84-3 Pesticides ronnel
83-79-4 Pesticides rotenone78-48-8 Pesticides s,s;s-tributylphosphorotrithioate
78587-05-0 Pesticides savey
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
5 – 9 6.5 – 8.5
1.80E+04 9.00E+03 4.00E+03 2.00E+05 7.00E+04 3.00E+05 1.40E+00
1.70E-04 7.00E-06 6.40E-05 1.00E+01 3.00E-02 3.00E-02 1.70E-04 7.00E-06 6.40E-05 3.12E+04
3.10E+02 8.00E+00 2.00E+01 4.60E+02 8.00E+00 3.00E+01 3.00E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 145 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes135-98-8 VOCs sec-butylbenzene
7783-00-8 Metal compounds selenious acid7782-49-2 Metals selenium and compounds
74051-80-2 Pesticides sethoxydim7440-22-4 Metals SILVER HARDNESS - DEPENDENT
506-64-9 Cyanides silver cyanide122-34-9 Pesticides simazine
26628-22-8 Metal compounds sodium azide143-33-9 Cyanides sodium cyanide148-18-5 Metals (organometallic) sodium diethyldithiocarbamate
62-74-8 Metals (organometallic) sodium fluoroacetate13718-26-8 Metal compounds sodium metavanadate
7601-89-0 Perchlorates sodium perchlorate7440-24-6 Metals strontium
57-24-9 SVOCs strychnine100-42-5 VOCs styrene
88671-89-0 Pesticides systhane1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES
34014-18-1 Pesticides tebuthiuron3383-96-8 Pesticides temephos5902-51-2 Pesticides terbacil
13071-79-9 SVOCs terbufos886-50-0 Pesticides terbutryn
98-06-6 VOCs tert-butylbenzene5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4'
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5-630-20-6 VOCs tetrachloroethane;1,1,1,2-
79-34-5 VOCs tetrachloroethane;1,1,2,2-127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,-
961-11-5 Pesticides tetrachlorvinphos3689-24-5 Pesticides tetraethyl dithiopyrophosphate
78-00-2 Metals (organometallic) tetraethyl lead811-97-2 VOCs tetrafluoroethane;1,1,1,2-109-99-9 Furans tetrahydrofuran
1314-32-5 Metal compounds thallic oxide563-68-8 Metal compounds thallium acetate
6533-73-9 Metal compounds thallium carbonate7791-12-0 Metal compounds thallium chloride
10102-45-1 Metal compounds thallium nitrate12039-52-0 Metal compounds thallium selenite
7446-18-6 Metal compounds thallium(I) sulfate7440-28-0 Metals thallium, soluble salts
28249-77-6 Pesticides thiobencarb21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2-39196-18-4 Pesticides thiofanox23564-05-8 Pesticides thiophanate-methyl
137-26-8 Pesticides thiram7440-31-5 Metals tin
118-96-7 Explosives tnt108-88-3 VOCs toluene
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6-584-84-9 VOCs toluene-2,4-diisocyanate
91-08-7 VOCs toluene-2,6-diisocyanate95-70-5 SVOCs toluenediamine;2,5-
106-49-0 SVOCs toluidine;p-8001-35-2 Pesticides toxaphene
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.20E+02 6.00E+01 1.70E+02 2.90E+02 2.90E+02 7.10E+01 7.10E+01 4.80E+02 2.00E+02 4.20E+03 4.80E+00
1.90E+00 1.90E+00 5.00E-01
6.40E-08 1.30E-08 5.00E-09 6.40E-08 1.40E-08 5.10E-09 5.00E+03
3.00E-02 3.00E-02
1.20E-01 1.00E-01 2.00E-01 4.60E-01 3.00E-01 3.00E+00 5.00E+004.90E+00 2.40E+00 1.00E+01 7.10E+00 2.90E+00 2.90E+01 3.10E+01
2.40E-01 1.70E+00 2.40E-01 2.70E-01 6.30E+00 4.70E-01 1.16E+02
1.80E+02 7.20E+01 5.70E+01 4.10E+02 1.30E+02 5.20E+02 1.07E+01
3.20E-05 7.00E-04 2.10E-01 2.10E-01 2.00E-04 2.00E-04 3.20E-05 7.10E-04 1.31E+04
Washington State Department of Ecology - CLARC Surface Water Table (Methods B and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 146 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes93-72-1 Herbicides tp;2,4,5-
unavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin2303-17-5 Pesticides triallate
82097-50-5 Pesticides triasulfuron615-54-3 VOCs tribromobenzene;1,2,4-688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2-76-03-9 SVOCs trichloroacetic acid
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6-634-93-5 SVOCs trichloroaniline;2,4,6-120-82-1 VOCs trichlorobenzene;1,2,4-
71-55-6 VOCs trichloroethane;1,1,1-79-00-5 VOCs trichloroethane;1,1,2-79-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES75-69-4 VOCs trichlorofluoromethane95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5-
598-77-6 VOCs trichloropropane;1,1,2-96-18-4 VOCs trichloropropane;1,2,3-96-19-5 VOCs trichloropropene;1,2,3-
58138-08-2 Pesticides tridiphane121-44-8 VOCs triethylamine
1582-09-8 Pesticides trifluralinunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate526-73-8 VOCs trimethylbenzene;1,2,3-
95-63-6 VOCs trimethylbenzene;1,2,4-108-67-8 VOCs trimethylbenzene;1,3,5-
99-35-4 Explosives trinitrobenzene;1,3,5-479-45-8 Explosives trinitrophenylmethylnitramine
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS7440-62-2 Metals vanadium1314-62-1 Metal compounds vanadium pentoxide1929-77-7 Pesticides vernam
50471-44-8 Pesticides vinclozolin108-05-4 VOCs vinyl acetate
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES81-81-2 Pesticides warfarin
8012-95-1 Petroleum white mineral oil108-38-3 VOCs xylene;m-
95-47-6 VOCs xylene;o-106-42-3 VOCs xylene;p-
1330-20-7 VOCs xylenes7440-66-6 Metals ZINC HARDNESS - DEPENDENT
557-21-1 Cyanides zinc cyanide1314-84-7 Metal compounds zinc phosphide
12122-67-7 Pesticides zineb
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.00E+02 4.00E+02
4.20E-01 7.40E-03
1.20E-01 3.60E-02 7.10E-02 1.40E-01 3.70E-02 7.60E-02 1.14E+024.70E+04 2.00E+04 1.00E+04 1.60E+05 5.00E+04 2.00E+05 5.60E+004.40E-01 3.50E-01 5.50E-01 1.80E+00 9.00E-01 8.90E+00 4.50E+003.80E-01 3.00E-01 6.00E-01 8.60E-01 7.00E-01 7.00E+00 1.10E+01
3.00E+02 6.00E+022.50E-01 1.50E+00 2.80E-01 2.80E+00 1.50E+02
2.00E-02 2.20E-02 2.60E-01 1.80E-01 1.60E+00 1.17E+00
2.30E+03 1.00E+03 7.40E+03 9.00E+01 9.00E+01 8.10E+01 8.10E+01 2.90E+03 1.00E+03 2.60E+04 4.70E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 147 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
83-32-9 PAHs acenaphthene 6.00E-02 I 1.60E+0330560-19-1 Pesticides acephate 1.20E-03 O
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-0334256-82-1 Pesticides acetochlor 2.00E-02 I
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I75-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-0475-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-0298-86-2 SVOCs acetophenone 1.00E-01 I
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 3.00E+00 3.00E+00
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M79-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 8.60E+03 1.00E+0115972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 4.20E-02 2.00E-03 2.50E+00 3.00E+00 1.90E-03
74223-64-6 Pesticides ally 2.50E-01 I107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P20859-73-8 Metal compounds aluminum phosphide 4.00E-04 I67485-29-4 Pesticides amdro 1.70E-02 O
834-12-8 Pesticides ametryn 9.00E-03 I591-27-5 Phenols aminophenol;m- 8.00E-02 P
33089-61-1 Pesticides amitraz 2.50E-03 I7664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-017790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I7773-06-0 Pesticides ammonium sulfamate 2.00E-01 I
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I120-12-7 PAHs anthracene 3.00E-01 I 6.50E+04
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 2.60E+031314-60-9 Metal compounds antimony pentoxide 5.00E-04 H
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H1332-81-6 Metal compounds antimony tetroxide 4.00E-04 H1309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05
74115-24-5 Pesticides apollo 1.30E-02 I140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 1.50E-02 7.40E-0211097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 4.20E-03 2.60E-0311096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 4.40E+01 2.50E+00 3.60E+02 3.40E+02 1.90E+02 1.50E+027784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C1332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I
76578-14-8 Pesticides assure 9.00E-03 I3337-71-1 Pesticides asulam 3.60E-02 O1912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C
65195-55-3 Pesticides avermectin B1 4.00E-04 I103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I114-26-1 Pesticides baygon 4.00E-03 I
43121-43-3 Pesticides bayleton 3.40E-02 O68359-37-5 Pesticides baythroid 2.50E-02 I
1861-40-1 Pesticides benefin 5.00E-03 O17804-35-2 Pesticides benomyl 5.00E-02 I25057-89-0 Herbicides bentazon 3.00E-02 I
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 148 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
71-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 5.00E+03 5.70E+02108-98-5 SVOCs benzenethiol 1.00E-03 P
92-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 2.20E+02 8.10E-0356-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 6.50E+01 5.40E+00
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I98-07-7 VOCs benzotrichloride 1.30E+01 I
100-51-6 SVOCs benzyl alcohol 1.00E-01 P100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 6.80E+0291-58-7 PAHs beta-chloronaphthalene 8.00E-02 I 2.60E+03
141-66-2 Pesticides bidrin 3.00E-05 O82657-04-3 Pesticides biphenthrin 1.50E-02 I
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 1.00E+05 9.40E+02111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 2.10E+01117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 1.00E+03 8.90E+01542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I
80-05-7 Phenols bisphenol a 5.00E-02 I7440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I75-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 3.50E+04 7.00E+02
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-0175-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 3.50E+04 5.50E+0374-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 2.40E+03
2104-96-3 Pesticides bromophos 5.00E-03 H1689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O1689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C71-36-3 VOCs butanol;n- 1.00E-01 I85-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P 3.10E+03 2.10E+02
2008-41-5 Pesticides butylate 5.00E-02 I85-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O75-60-5 Pesticides cacodylic acid 2.00E-02 A
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I 3.70E+00 1.80E+00 1.00E+00 7.20E-017440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 1.00E+02 3.70E+00 1.80E+00 1.00E+00 7.20E-01
592-01-8 Cyanides calcium cyanide 1.00E-03 I105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I 2.10E+00 2.10E+001563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I56-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 1.40E+03 1.20E+02
55285-14-8 Pesticides carbosulfan 1.00E-02 I5234-68-4 Pesticides carboxin 1.00E-01 I1306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04
302-17-0 VOCs chloral hydrate 1.00E-01 I133-90-4 Herbicides chloramben 1.50E-02 I118-75-2 Pesticides chloranil 4.00E-01 H
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 2.30E-01 3.30E-02 2.40E+00 2.40E+00 4.30E-03 4.30E-03143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I
16887-00-6 Nutrients chloride 8.60E+05 8.60E+05 2.30E+05 2.30E+05
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 149 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
90982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 1.90E+01 1.90E+01 1.10E+01 1.10E+01
506-77-4 Cyanides chlorine cyanide 5.00E-02 I10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I
7758-19-2 Nutrients chlorite 3.00E-02 I75-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01
126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H
95-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P79-11-8 SVOCs chloroacetic acid 2.00E-03 H
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 1.30E+04510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X98-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P
109-69-3 VOCs chlorobutane;1- 4.00E-02 P59-50-7 Phenols chlorocresol 1.00E-01 A75-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+0167-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 1.70E+04 1.40E+0374-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C88-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I 2.40E+02
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C95-49-8 VOCs chlorotoluene;o- 2.00E-02 I
101-21-3 Pesticides chlorpropham 5.00E-02 O2921-88-2 Pesticides chlorpyrifos 1.00E-03 A 8.30E-02 8.30E-02 4.10E-02 4.10E-025598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O60238-56-4 Pesticides chlorthiophos 8.00E-04 H
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I 6.10E+05 5.50E+02 5.70E+02 1.80E+02 7.40E+0118540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 1.20E+03 1.50E+01 1.60E+01 1.00E+01 1.10E+01
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+007440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H 7.20E+03 1.70E+01 1.10E+01
544-92-3 Cyanides copper cyanide 5.00E-03 I108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I21725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 4.10E+03 2.20E+01 2.20E+01 5.20E+00 5.20E+00460-19-5 Cyanides cyanogen 1.00E-03 I506-68-3 Cyanides cyanogen bromide 9.00E-02 I110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I108-91-8 VOCs cyclohexylamine 2.00E-01 I
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O52315-07-8 Pesticides cypermethrin 2.30E-02 O66215-27-8 Pesticides cyromazine 5.00E-01 O
1861-32-1 Herbicides dacthal 1.00E-02 I75-99-0 Herbicides dalapon, sodium salt 3.00E-02 I
39515-41-8 Pesticides danitol 2.50E-02 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 150 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
94-82-6 Pesticides db;2,4- 3.00E-02 O72-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 3.60E-03 1.30E-0272-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 3.60E-02 8.90E-0350-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 6.00E-02 8.90E-03 1.10E+00 1.10E+00 1.00E-03 1.00E-03
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I 1.40E+04 7.20E+048065-48-3 Pesticides demeton 4.00E-05 I 1.00E-01
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I2303-16-4 Pesticides diallate 6.10E-02 H
333-41-5 Pesticides diazinon 7.00E-04 A 1.70E-01 1.70E-0153-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran 1.00E-03 X96-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I 3.50E+04 5.10E+02
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I 7.30E+031918-00-9 Herbicides dicamba 3.00E-02 I3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+0179-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I95-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 1.00E+04
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 8.20E+03 5.40E+02
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 1.20E+0075-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I75-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 3.20E+04 1.50E+03540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 5.80E+04156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I 8.20E+04120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I 4.80E+02
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I78-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 6.30E+04 1.10E+03
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 1.00E+05 8.50E+02
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I77-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P60-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 6.90E-02 2.20E-03 2.50E+00 2.40E-01 1.90E-03 5.60E-0284-66-2 Phthalates diethyl phthalate 8.00E-01 I 7.10E+04
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P617-84-5 SVOCs diethylformamide 1.00E-03 P
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C43222-48-6 Pesticides difenzoquat 8.30E-02 O35367-38-5 Pesticides diflubenzuron 2.00E-02 I
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+011445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I
55290-64-7 Pesticides dimethipin 2.20E-02 O60-51-5 Pesticides dimethoate 2.20E-03 O
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H95-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 151 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
57-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I 1.40E+03576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I99-65-0 Explosives dinitrobenzene;m- 1.00E-04 I
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I 8.60E+0325550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 3.40E+03 1.40E+02606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P
88-85-7 Herbicides dinoseb 1.00E-03 I123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I957-51-7 Pesticides diphenamid 3.00E-02 I122-39-4 Pesticides diphenylamine 1.00E-01 O 2.20E+04122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 8.10E+00
85-00-7 Pesticides diquat 2.20E-03 I1937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C2602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C298-04-4 Pesticides disulfoton 4.00E-05 I505-29-3 SVOCs dithiane;1,4- 1.00E-02 I330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I534-52-1 Phenols DNOC 8.00E-05 X
2439-10-3 Pesticides dodine 2.00E-02 O115-29-7 Pesticides endosulfan 6.00E-03 I 1.40E+02 2.20E-01 5.60E-02
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P959-98-8 Pesticides endosulfan;alpha 2.20E-01 5.60E-02
33213-65-9 Pesticides endosulfan;beta 2.20E-01 5.60E-02145-73-3 Herbicides endothall 2.00E-02 I
72-20-8 Pesticides endrin 3.00E-04 I 4.90E-01 1.80E-01 8.60E-02 2.30E-03 3.60E-027421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03
16672-87-0 Pesticides ethephon 5.00E-03 I563-12-2 Pesticides ethion 5.00E-04 I111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O
60-29-7 VOCs ethyl ether 2.00E-01 I97-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 1.70E+04109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P107-15-3 VOCs ethylene diamine 9.00E-02 P106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C96-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C84-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 152 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
101200-48-0 Pesticides express 8.00E-03 I22224-92-6 Pesticides fenamiphos 2.50E-04 I
2164-17-2 Pesticides fluometuron 1.30E-02 I206-44-0 PAHs fluoranthene 4.00E-02 I 2.30E+02
86-73-7 PAHs fluorene 4.00E-02 I 8.60E+0316984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I59756-60-4 Pesticides fluridone 8.00E-02 I56425-91-3 Pesticides flurprimidol 4.00E-02 O66332-96-5 Pesticides flutolanil 5.00E-01 O69409-94-5 Pesticides fluvalinate 1.00E-02 I
133-07-3 Pesticides folpet 9.00E-02 O72178-02-0 Pesticides fomesafen 2.50E-03 O
944-22-9 Pesticides fonofos 2.00E-03 I50-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C64-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P
39148-24-8 Pesticides fosetyl-al 2.50E+00 O110-00-9 Furans furan 1.00E-03 I
67-45-8 SVOCs furazolidone 3.80E+00 H98-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C60568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I77182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I1071-83-6 SVOCs glyphosate 1.00E-01 I
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 1.00E-0269806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I79277-27-3 Pesticides harmony 4.30E-02 O
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 2.90E-01 3.20E-03 5.20E-01 5.20E-01 3.80E-03 3.80E-031024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 7.50E-03 1.60E-03 5.20E-01 3.80E-03
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X87-82-1 SVOCs hexabromobenzene 2.00E-03 I
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 6.00E-01 1.20E-02
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 2.30E+03 7.50E+02319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 4.00E+02 2.00E-01319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 6.90E-01608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 9.00E+0334465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 5.20E+01 4.70E+0170-30-4 SVOCs hexachlorophene 3.00E-04 I
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I
51235-04-2 Pesticides hexazinone 3.30E-02 I302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I7647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I7783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04 2.00E+00
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P35554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O81335-37-7 Pesticides imazaquin 2.50E-01 I
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione 4.00E-02 I
7439-89-6 Metals iron 7.00E-01 P 1.00E+03
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 153 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
78-83-1 VOCs isobutyl alcohol 3.00E-01 I78-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 3.00E+05 3.90E+04
33820-53-0 Pesticides isopropalin 1.50E-02 I1832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I
82558-50-7 Pesticides isoxaben 5.00E-02 I77501-63-4 Pesticides lactofen 8.00E-03 O
7439-92-1 Metals LEAD LEAD NOTES 6.50E+01 6.50E+01 2.50E+00 2.50E+0058-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 1.50E+01 1.10E+00 2.00E+00 9.50E-01 8.00E-02
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O7791-03-9 Perchlorates lithium perchlorate 7.00E-04 I
83055-99-6 Pesticides londax 2.00E-01 I121-75-5 Pesticides malathion 2.00E-02 I 1.00E-01108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I123-33-1 SVOCs maleic hydrazide 5.00E-01 I109-77-3 VOCs malononitrile 1.00E-04 P
8018-01-7 Pesticides mancozeb 3.00E-02 H12427-38-2 Pesticides maneb 5.00E-03 I
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I
950-10-7 Pesticides mephosfolan 9.00E-05 H24307-26-4 Pesticides mepiquat chloride 3.00E-02 I
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I7439-97-6 Metals mercury 3.00E-04 I 8.57E-05 2.10E+00 1.40E+00 1.20E-02 7.70E-01
150-50-5 Pesticides merphos 3.00E-05 I57837-19-1 Pesticides metalaxyl 6.00E-02 I
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I10265-92-6 Pesticides methamidosphos 5.00E-05 I
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I950-37-8 Pesticides methidathion 1.50E-03 O
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I99-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C72-43-5 Pesticides methoxychlor 5.00E-03 I 2.10E+01 3.00E-02
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P
79-20-9 VOCs methyl acetate 1.00E+00 X96-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H78-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I90-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P91-57-6 PAHs methyl naphthalene;2- 4.00E-03 I
298-00-0 Pesticides methyl parathion 2.50E-04 I25013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H1634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I99-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C95-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H75-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 4.30E+04 9.00E+04
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-049016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C60-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 154 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
51218-45-2 Pesticides metolachlor 1.50E-01 I21087-64-9 Pesticides metribuzin 2.50E-02 I
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 1.00E-032212-67-1 Pesticides molinate 2.00E-03 I7439-98-7 Metals molybdenum 5.00E-03 I
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I300-76-5 Pesticides naled 2.00E-03 I
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 1.20E+0415299-99-7 Pesticides napropamide 1.20E-01 O
104-51-8 VOCs n-butylbenzene 5.00E-02 PE715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 2.80E+03 1.40E+03 4.70E+02 1.60E+02 5.20E+0112035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C14797-55-8 Nutrients nitrate 1.60E+00 I14797-65-0 Nutrients nitrite 1.00E-01 I
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 4.50E+0367-20-9 SVOCs nitrofurantoin 7.00E-02 H59-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C
556-88-7 SVOCs nitroguanidine 1.00E-01 I79-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I55-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I62-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 2.00E+03 1.20E+02
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 2.00E+01
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 2.40E+02759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X88-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P99-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P
84852-15-3 Phenols nonylphenol 2.80E+01 6.60E+0027314-13-2 Pesticides norflurazon 1.50E-02 O85509-19-9 Pesticides nustar 2.00E-03 O32536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I 6.10E+03
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O19666-30-9 Pesticides oxadiazon 5.00E-03 I23135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I42874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O76738-62-0 Herbicides paclobutrazol 1.30E-02 I
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I56-38-2 Pesticides parathion 6.00E-03 H 6.50E-02 6.50E-02 1.30E-02 1.30E-02
1114-71-2 Pesticides pebulate 5.00E-02 H40487-42-1 Pesticides pendimethalin 3.00E-01 O
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I 8.00E-0232534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I82-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 2.90E+03 3.70E+01 2.00E+01 1.90E+01 1.30E+01 1.50E+01
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I52645-53-1 Pesticides permethrin 5.00E-02 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 155 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
unavailable19 General Chemistry pH pH NOTES 6.5 – 913684-63-4 Pesticides phenmedipham 2.40E-01 O
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 1.40E+06106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H62-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I90-43-7 Phenols phenylphenol;2- 1.90E-03 H
298-02-2 Pesticides phorate 2.00E-04 H75-44-5 VOCs phosgene 3.00E-04 I 8.57E-05
732-11-6 Pesticides phosmet 2.00E-02 I7803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I7664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P7723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H85-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I
1918-02-1 Herbicides picloram 7.00E-02 I29232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O36355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 2.60E-03 2.00E+00 1.40E-02 1.40E-02151-50-8 Cyanides potassium cyanide 2.00E-03 I
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I506-61-6 Cyanides potassium silver cyanide 5.00E-03 I
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I26399-36-0 Pesticides profluralin 6.00E-03 H
1610-18-0 Pesticides prometon 1.50E-02 I7287-19-6 Pesticides prometryn 4.00E-02 O
23950-58-5 Pesticides pronamide 7.50E-02 I1918-16-7 Pesticides propachlor 1.30E-02 I
709-98-8 Pesticides propanil 5.00E-03 I2312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O
107-19-7 VOCs propargyl alcohol 2.00E-03 I139-40-2 Pesticides propazine 2.00E-02 I122-42-9 Pesticides propham 2.00E-02 I
60207-90-1 Pesticides propiconazole 1.00E-01 O123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X
57-55-6 Glycols propylene glycol 2.00E+01 P6423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I81335-77-5 Pesticides pursuit 2.50E+00 O51630-58-1 Pesticides pydrin 2.50E-02 I
129-00-0 PAHs pyrene 3.00E-02 I 6.50E+03110-86-1 VOCs pyridine 1.00E-03 I
13593-03-8 Pesticides quinalphos 5.00E-04 I91-22-5 SVOCs quinoline 3.00E+00 I
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 IE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A
10453-86-8 Pesticides resmethrin 3.00E-02 I299-84-3 Pesticides ronnel 5.00E-02 H
83-79-4 Pesticides rotenone 4.00E-03 I78-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O
78587-05-0 Pesticides savey 2.50E-02 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 156 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
135-98-8 VOCs sec-butylbenzene 1.00E-01 X7783-00-8 Metal compounds selenious acid 5.00E-03 I7782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 6.80E+03 2.00E+01 5.00E+00
74051-80-2 Pesticides sethoxydim 1.40E-01 O7440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I 6.50E+04 3.40E+00 3.20E+00
506-64-9 Cyanides silver cyanide 1.00E-01 I122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H
26628-22-8 Metal compounds sodium azide 4.00E-03 I143-33-9 Cyanides sodium cyanide 1.00E-03 I148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I13718-26-8 Metal compounds sodium metavanadate 1.00E-03 H
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I7440-24-6 Metals strontium 6.00E-01 I
57-24-9 SVOCs strychnine 3.00E-04 I100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I
88671-89-0 Pesticides systhane 2.50E-02 I1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 9.10E-07 2.50E-07
34014-18-1 Pesticides tebuthiuron 7.00E-02 I3383-96-8 Pesticides temephos 2.00E-02 H5902-51-2 Pesticides terbacil 1.30E-02 I
13071-79-9 SVOCs terbufos 2.50E-05 H886-50-0 Pesticides terbutryn 1.00E-03 I
98-06-6 VOCs tert-butylbenzene 1.00E-01 X5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 2.60E+04 1.60E+02127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 1.30E+03 2.50E+03
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H3689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I
1314-32-5 Metal compounds thallic oxide 2.00E-05 S563-68-8 Metal compounds thallium acetate 1.00E-05 X
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X7791-12-0 Metal compounds thallium chloride 1.00E-05 X
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X12039-52-0 Metal compounds thallium selenite 1.00E-05 S
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X7440-28-0 Metals thallium, soluble salts 1.00E-05 X 5.60E-01
28249-77-6 Pesticides thiobencarb 1.00E-02 I21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H39196-18-4 Pesticides thiofanox 3.00E-04 H23564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O
137-26-8 Pesticides thiram 1.50E-02 O7440-31-5 Metals tin 6.00E-01 H
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 4.80E+04
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C95-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P8001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 4.50E-02 1.10E-02 7.30E-01 7.30E-01 2.00E-04 2.00E-04
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 157 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
SurfaceWaterMethod CNoncancer(Eq. 730-1adjusted)
(µg/L)
SurfaceWaterMethod C
Cancer(Eq. 730-2adjusted)
(µg/L)
SurfaceWater
Aquatic LifeFresh/Acute
173-201A WAC(µg/L)
SurfaceWater
Aquatic LifeFresh/AcuteCWA §304
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeFresh/Chronic
CWA §304(µg/L)
93-72-1 Herbicides tp;2,4,5- 8.00E-03 Iunavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin 7.50E-03 I2303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O
82097-50-5 Pesticides triasulfuron 1.00E-02 I615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I688-73-3 Organotins tributyltin 4.60E-01 7.20E-02
56-35-9 Organotins tributyltin oxide 3.00E-04 I10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I76-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 5.70E+02 4.90E+01
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 2.30E+0679-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 5.80E+03 6.30E+0279-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 2.90E+02 3.20E+0275-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 4.30E+01 9.80E+0193-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I96-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M96-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X
58138-08-2 Pesticides tridiphane 3.00E-03 I121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 Iunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A7440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S1314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I1929-77-7 Pesticides vernam 1.00E-03 I
50471-44-8 Pesticides vinclozolin 1.20E-03 O108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 1.70E+04 9.20E+0181-81-2 Pesticides warfarin 3.00E-04 I
8012-95-1 Petroleum white mineral oil 3.00E+00 P108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I7440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I 4.10E+04 1.10E+02 1.20E+02 1.00E+02 1.20E+02
557-21-1 Cyanides zinc cyanide 5.00E-02 I1314-84-7 Metal compounds zinc phosphide 3.00E-04 I
12122-67-7 Pesticides zineb 5.00E-02 I
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 158 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes83-32-9 PAHs acenaphthene
30560-19-1 Pesticides acephate75-07-0 VOCs acetaldehyde
34256-82-1 Pesticides acetochlor67-64-1 VOCs acetone75-86-5 VOCs acetone cyanohydrin75-05-8 VOCs acetonitrile98-86-2 SVOCs acetophenone
62476-59-9 Herbicides acifluorfen, sodium107-02-8 VOCs acrolein
79-06-1 VOCs acrylamide79-10-7 VOCs acrylic acid
107-13-1 VOCs acrylonitrile15972-60-8 Pesticides alachlor
1596-84-5 Pesticides alar116-06-3 Pesticides (Carbamate) aldicarb
1646-88-4 Pesticides (Carbamate) aldicarb sulfone309-00-2 Pesticides aldrin
74223-64-6 Pesticides ally107-18-6 VOCs allyl alcohol107-05-1 VOCs allyl chloride
7429-90-5 Metals aluminum20859-73-8 Metal compounds aluminum phosphide67485-29-4 Pesticides amdro
834-12-8 Pesticides ametryn591-27-5 Phenols aminophenol;m-
33089-61-1 Pesticides amitraz7664-41-7 Nutrients AMMONIA AMMONIA NOTES7790-98-9 Perchlorates ammonium perchlorate7773-06-0 Pesticides ammonium sulfamate
62-53-3 SVOCs aniline120-12-7 PAHs anthracene
7440-36-0 Metals antimony1314-60-9 Metal compounds antimony pentoxide
28300-74-5 Metal compounds antimony potassium tartrate1332-81-6 Metal compounds antimony tetroxide1309-64-4 Metal compounds antimony trioxide
74115-24-5 Pesticides apollo140-57-8 SVOCs aramite
12674-11-2 PCBs aroclor 101611097-69-1 PCBs aroclor 125411096-82-5 PCBs aroclor 1260
7440-38-2 Metals arsenic, inorganic7784-42-1 Gases arsine1332-21-4 Fibers ASBESTOS ASBESTOS NOTE
76578-14-8 Pesticides assure3337-71-1 Pesticides asulam1912-24-9 Pesticides atrazine
65195-55-3 Pesticides avermectin B1103-33-3 Pesticides azobenzene
7440-39-3 Metals barium and compounds114-26-1 Pesticides baygon
43121-43-3 Pesticides bayleton68359-37-5 Pesticides baythroid
1861-40-1 Pesticides benefin17804-35-2 Pesticides benomyl25057-89-0 Herbicides bentazon
100-52-7 SVOCs benzaldehyde
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.10E+02 3.00E+01 7.00E+01 1.10E+02 3.00E+01 9.00E+01 2.42E+02
1.00E+00 3.00E+00 1.10E+00 4.00E+02
1.90E-02 6.10E-02 2.80E-02 7.00E+00 3.00E+01
5.70E-06 4.10E-08 7.70E-07 7.10E-01 1.30E+00 1.90E-03 5.80E-06 4.10E-08 7.70E-07 4.67E+03
2.30E+02 3.50E+01
3.10E+03 1.00E+02 3.00E+02 4.60E+03 1.00E+02 4.00E+02 3.00E+011.20E+01 6.00E+00 5.60E+00 1.80E+02 9.00E+01 6.40E+02 1.00E+00
3.12E+043.12E+04
1.00E+01 1.80E-02 1.80E-02 6.90E+01 6.90E+01 3.60E+01 3.60E+01 1.00E+01 1.40E-01 1.40E-01 4.40E+01
7.00E+06 7.00E+06
1.00E+03
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 159 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes71-43-2 VOCs BENZENE
108-98-5 SVOCs benzenethiol92-87-5 SVOCs benzidine56-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT98-07-7 VOCs benzotrichloride
100-51-6 SVOCs benzyl alcohol100-44-7 VOCs benzyl chloride
7440-41-7 Metals beryllium91-58-7 PAHs beta-chloronaphthalene
141-66-2 Pesticides bidrin82657-04-3 Pesticides biphenthrin
92-52-4 PAHs biphenyl;1,1-108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether111-44-4 SVOCs bis(2-chloroethyl)ether117-81-7 Phthalates bis(2-ethylhexyl) phthalate542-88-1 VOCs bis(chloromethyl)ether
80-05-7 Phenols bisphenol a7440-42-8 Metals boron
15541-45-4 Pesticides bromate79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene75-27-4 VOCs bromodichloromethane TTHM NOTES
593-60-2 VOCs bromoethene75-25-2 VOCs bromoform TTHM NOTES74-83-9 VOCs bromomethane
2104-96-3 Pesticides bromophos1689-84-5 Pesticides bromoxynil1689-99-2 Pesticides bromoxynil octanoate
106-99-0 VOCs butadiene;1,3-71-36-3 VOCs butanol;n-85-68-7 Phthalates butyl benzyl phthalate
2008-41-5 Pesticides butylate85-70-1 Phthalates butylphthalyl butylglycolate94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)-75-60-5 Pesticides cacodylic acid
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES7440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES
592-01-8 Cyanides calcium cyanide105-60-2 SVOCs caprolactam
2425-06-1 Pesticides captafol133-06-2 Pesticides captan
63-25-2 Pesticides (Carbamate) carbaryl1563-66-2 Pesticides (Carbamate) carbofuran
75-15-0 VOCs carbon disulfide56-23-5 VOCs carbon tetrachloride
55285-14-8 Pesticides carbosulfan5234-68-4 Pesticides carboxin1306-38-3 Metals cerium oxide and cerium compounds
302-17-0 VOCs chloral hydrate133-90-4 Herbicides chloramben118-75-2 Pesticides chloranil
12789-03-6 Pesticides chlordane143-50-0 Pesticides chlordecone (kepone)
16887-00-6 Nutrients chloride
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
4.40E-01 5.80E-01 1.60E+00 1.60E+01 5.20E+00
2.00E-05 1.40E-04 2.30E-05 1.10E-02 8.75E+011.40E-02 1.60E-04 1.20E-03 2.10E-02 1.60E-04 1.30E-03 3.00E+011.40E-03 1.60E-05 1.20E-04 2.10E-03 1.60E-05 1.30E-04 3.00E+011.40E-02 1.60E-04 1.20E-03 2.10E-02 1.60E-04 1.30E-03 3.00E+011.40E-02 1.60E-03 1.20E-02 2.10E-01 1.60E-03 1.30E-02 3.00E+01
1.90E+011.70E+02 1.00E+02 8.00E+02 1.80E+02 1.00E+02 1.00E+03 2.02E+02
4.00E+02 2.00E+02 9.00E+02 4.00E+03 2.47E+002.00E-02 3.00E-02 6.00E-02 2.20E+00 6.90E+002.30E-01 4.50E-02 3.20E-01 2.50E-01 4.60E-02 3.70E-01 1.30E+02
1.50E-04 1.70E-02
7.70E-01 7.30E-01 9.50E-01 3.60E+00 2.80E+00 2.70E+01 3.75E+00
5.80E+00 4.60E+00 7.00E+00 2.70E+01 1.20E+01 1.20E+02 3.75E+005.20E+02 3.00E+02 1.00E+02 2.40E+03 1.00E+04 3.75E+00
5.60E-01 1.30E-02 1.00E-01 5.80E-01 1.30E-02 1.00E-01 4.14E+02
4.20E+01 3.30E+01 9.30E+00 7.90E+00 6.40E+014.20E+01 3.30E+01 9.30E+00 7.90E+00 6.40E+01
1.60E+00
2.00E-01 4.00E-01 3.50E-01 5.00E+00 1.88E+01
9.30E-05 2.20E-05 3.10E-04 9.00E-02 9.00E-02 4.00E-03 4.00E-03 9.30E-05 2.20E-05 3.20E-04 1.41E+04
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 160 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes90982-32-4 Pesticides chlorimuron-ethyl
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS506-77-4 Cyanides chlorine cyanide
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS7758-19-2 Nutrients chlorite
75-68-3 VOCs chloro-1,1-difluoroethane;1-126-99-8 VOCs chloro-1,3-butadiene;2-
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4-95-69-2 SVOCs chloro-2-methylaniline;4-79-11-8 SVOCs chloroacetic acid
532-27-4 SVOCs chloroacetophenone;2-106-47-8 SVOCs chloroaniline;p-108-90-7 VOCs chlorobenzene510-15-6 Pesticides chlorobenzilate
74-11-3 Pesticides chlorobenzoic acid;p-98-56-6 VOCs chlorobenzotrifluoride;4-
109-69-3 VOCs chlorobutane;1-59-50-7 Phenols chlorocresol75-45-6 VOCs chlorodifluoromethane67-66-3 VOCs chloroform TTHM NOTES74-87-3 VOCs chloromethane
107-30-2 VOCs chloromethyl methyl ether88-73-3 Pesticides chloronitrobenzene;o-
100-00-5 Pesticides chloronitrobenzene;p-95-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT
1897-45-6 Pesticides chlorothalonil95-49-8 VOCs chlorotoluene;o-
101-21-3 Pesticides chlorpropham2921-88-2 Pesticides chlorpyrifos5598-13-0 Pesticides chlorpyrifos-methyl
64902-72-3 Pesticides chlorsulfuron60238-56-4 Pesticides chlorthiophos
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt
E649830 VOCs coke oven emissions7440-50-8 Metals COPPER HARDNESS - DEPENDENT
544-92-3 Cyanides copper cyanide108-39-4 Phenols cresol;m-
95-48-7 Phenols cresol;o-106-44-5 Phenols cresol;p-123-73-9 VOCs crotonaldehyde
98-82-8 VOCs cumene21725-46-2 Pesticides cyanazine
57-12-5 Cyanides CYANIDE CYANIDE NOTES460-19-5 Cyanides cyanogen506-68-3 Cyanides cyanogen bromide110-82-7 VOCs cyclohexane108-94-1 VOCs cyclohexanone108-91-8 VOCs cyclohexylamine
68085-85-8 Pesticides cyhalothrin/karate52315-07-8 Pesticides cypermethrin66215-27-8 Pesticides cyromazine
1861-32-1 Herbicides dacthal75-99-0 Herbicides dalapon, sodium salt
39515-41-8 Pesticides danitol
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.30E+01 1.30E+01 7.50E+00 7.50E+00
3.80E+02 1.00E+02 1.00E+02 8.90E+02 2.00E+02 8.00E+02 1.03E+01
3.60E+01 5.00E+02 3.60E+01 2.00E+03
2.60E+02 1.00E+02 6.00E+01 1.20E+03 6.00E+02 2.00E+03 3.75E+003.75E+00
1.50E+01 3.00E+01 1.70E+01 8.00E+02 1.34E+02
1.10E-02 1.10E-02 5.60E-03 5.60E-03
1.60E+011.10E+03 1.10E+03 5.00E+01 5.00E+01 1.60E+01
1.40E+00 1.60E-02 1.20E-01 2.10E+00 1.60E-02 1.30E-01 3.00E+01
1.30E+03 1.30E+03 4.80E+00 4.80E+00 3.10E+00 3.10E+00 3.60E+01
1.90E+01 9.00E+00 4.00E+00 1.00E+00 1.00E+00 1.00E+00 1.00E+00 2.70E+02 1.00E+02 4.00E+02 1.00E+00
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 161 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes94-82-6 Pesticides db;2,4-72-54-8 Pesticides ddd72-55-9 Pesticides dde50-29-3 Pesticides ddt
1163-19-5 PBDEs decabromodiphenyl ether8065-48-3 Pesticides demeton
103-23-1 Phthalates di(2-ethylhexyl)adipate2303-16-4 Pesticides diallate
333-41-5 Pesticides diazinon53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran96-12-8 Pesticides dibromo-3-chloropropane;1,2-
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4-124-48-1 VOCs dibromochloromethane TTHM NOTES
84-74-2 Phthalates di-butyl phthalate1918-00-9 Herbicides dicamba3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4-79-43-6 SVOCs dichloroacetic acid95-50-1 VOCs dichlorobenzene;1,2-
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4-
91-94-1 SVOCs dichlorobenzidine;3,3'-75-71-8 VOCs dichlorodifluoromethane75-34-3 VOCs dichloroethane;1,1-
107-06-2 VOCs dichloroethane;1,2-540-59-0 VOCs dichloroethylene,1,2- (mixed isomers)
75-35-4 VOCs dichloroethylene;1,1-156-59-2 VOCs dichloroethylene;1,2-,cis156-60-5 VOCs dichloroethylene;1,2-,trans120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4-78-87-5 VOCs dichloropropane;1,2-
616-23-9 SVOCs dichloropropanol;2,3-542-75-6 VOCs dichloropropene;1,3-
62-73-7 Pesticides dichlorvos77-73-6 VOCs dicyclopentadiene60-57-1 Pesticides dieldrin84-66-2 Phthalates diethyl phthalate
112-34-5 Glycols diethylene glycol monobutyl ether111-90-0 Glycols diethylene glycol monoethyl ether617-84-5 SVOCs diethylformamide
56-53-1 SVOCs diethylstilbesterol43222-48-6 Pesticides difenzoquat35367-38-5 Pesticides diflubenzuron
75-37-6 VOCs difluoroethane;1,1-1445-75-6 VOCs diisopropyl methylphosphonate
55290-64-7 Pesticides dimethipin60-51-5 Pesticides dimethoate
119-90-4 SVOCs dimethoxybenzidine;3,3'-131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4-95-68-1 SVOCs dimethylaniline;2,4-
121-69-7 VOCs dimethylaniline;N,N-119-93-7 SVOCs dimethylbenzidine;3,3'-
68-12-2 VOCs dimethylformamide;N,N-
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
3.60E-05 7.90E-06 1.20E-04 3.60E-05 7.90E-06 1.20E-04 5.36E+045.10E-05 8.80E-07 1.80E-05 5.10E-05 8.80E-07 1.80E-05 5.36E+042.50E-05 1.20E-06 3.00E-05 1.30E-01 1.30E-01 1.00E-03 1.00E-03 2.50E-05 1.20E-06 3.00E-05 5.36E+04
3.20E+001.00E-01
8.20E-01 8.20E-011.40E-03 1.60E-05 1.20E-04 2.10E-03 1.60E-05 1.30E-04 3.00E+01
6.50E-01 6.00E-01 8.00E-01 3.00E+00 2.20E+00 2.10E+01 3.75E+004.50E+02 8.00E+00 2.00E+01 5.10E+02 8.00E+00 3.00E+01 8.90E+01
2.00E+03 7.00E+02 1.00E+03 2.50E+03 8.00E+02 3.00E+03 5.56E+011.30E+01 2.00E+00 7.00E+00 1.60E+01 2.00E+00 1.00E+014.60E+02 2.00E+02 3.00E+02 5.80E+02 2.00E+02 9.00E+02 5.56E+013.10E-03 4.90E-02 3.30E-03 1.50E-01 3.12E+02
9.30E+00 8.90E+00 9.90E+00 1.20E+02 7.30E+01 6.50E+02 1.20E+00
1.20E+03 7.00E+02 3.00E+02 4.10E+03 4.00E+03 2.00E+04 5.60E+00
6.00E+02 2.00E+02 1.00E+02 5.80E+03 1.00E+03 4.00E+03 1.58E+002.50E+01 1.00E+01 1.00E+01 3.40E+01 1.00E+01 6.00E+01 4.07E+01
1.30E+03 1.20E+047.10E-01 9.00E-01 3.10E+00 3.10E+01 4.11E+00
2.40E-01 2.20E-01 2.70E-01 2.00E+00 1.20E+00 1.20E+01 1.91E+00
6.10E-06 7.00E-08 1.20E-06 7.10E-01 7.10E-01 1.90E-03 1.90E-03 6.10E-06 7.00E-08 1.20E-06 4.67E+034.20E+03 2.00E+02 6.00E+02 5.00E+03 2.00E+02 6.00E+02 7.30E+01
9.20E+04 6.00E+02 2.00E+03 1.30E+05 6.00E+02 2.00E+03 3.60E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 162 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes57-14-7 VOCs dimethylhydrazine;1,1-
540-73-8 VOCs dimethylhydrazine;1,2-105-67-9 Phenols dimethylphenol;2,4-576-26-1 Phenols dimethylphenol;2,6-
95-65-8 Phenols dimethylphenol;3,4-99-65-0 Explosives dinitrobenzene;m-
528-29-0 SVOCs dinitrobenzene;o-100-25-4 SVOCs dinitrobenzene;p-131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6-
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6-121-14-2 Explosives dinitrotoluene;2,4-606-20-2 Explosives dinitrotoluene;2,6-117-84-0 Phthalates di-n-octyl phthalate
88-85-7 Herbicides dinoseb123-91-1 VOCs dioxane;1,4-957-51-7 Pesticides diphenamid122-39-4 Pesticides diphenylamine122-66-7 SVOCs diphenylhydrazine;1,2-
85-00-7 Pesticides diquat1937-37-7 Dyes direct black 382602-46-2 Dyes direct blue 6
16071-86-6 Dyes direct brown 95298-04-4 Pesticides disulfoton505-29-3 SVOCs dithiane;1,4-330-54-1 Pesticides (Carbamate) diuron534-52-1 Phenols DNOC
2439-10-3 Pesticides dodine115-29-7 Pesticides endosulfan
1031-07-8 Pesticides endosulfan sulfate959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall
72-20-8 Pesticides endrin7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin106-88-7 VOCs epoxybutane
16672-87-0 Pesticides ethephon563-12-2 Pesticides ethion111-15-9 VOCs ethoxyethanol acetate;2-110-80-5 VOCs ethoxyethanol;2-141-78-6 VOCs ethyl acetate140-88-5 VOCs ethyl acrylate
75-00-3 VOCs ethyl chloride759-94-4 Pesticides ethyl dipropylthiocarbamate;S-
60-29-7 VOCs ethyl ether97-63-2 VOCs ethyl methacrylate
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate100-41-4 VOCs ethylbenzene109-78-4 SVOCs ethylene cyanohydrin107-15-3 VOCs ethylene diamine106-93-4 VOCs ethylene dibromide (EDB)107-21-1 VOCs ethylene glycol111-76-2 Glycols ethylene glycol monobutyl ether (EGBE)
75-21-8 VOCs ethylene oxide96-45-7 SVOCs ethylene thiourea84-72-0 Phthalates ethylphthalyl ethylglycolate
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
8.50E+01 1.00E+02 9.70E+01 3.00E+03 9.38E+01
6.00E+01 3.00E+01 1.00E+01 6.10E+02 1.00E+02 3.00E+02 1.50E+001.00E+01 1.00E+03
3.90E-02 4.90E-02 1.80E-01 1.70E+00 3.80E+00
3.00E+011.50E-02 1.00E-02 3.00E-02 2.30E-02 2.00E-02 2.00E-01 2.49E+01
7.10E+00 3.00E+00 2.00E+00 2.50E+01 7.00E+00 3.00E+01
3.40E-02 8.70E-03 2.70E+029.70E+00 9.00E+00 2.00E+01 1.00E+01 4.00E+019.70E+00 6.00E+00 2.00E+01 3.40E-02 8.70E-03 1.00E+01 7.00E+00 3.00E+019.70E+00 2.00E+01 3.40E-02 8.70E-03 1.00E+01 4.00E+01
3.40E-02 2.00E-03 3.00E-02 3.70E-02 3.70E-02 2.30E-03 2.30E-03 3.50E-02 2.00E-03 3.00E-02 3.97E+033.40E-02 1.00E+00 3.50E-02 1.00E+00
2.00E+02 2.90E+01 6.80E+01 2.70E+02 3.10E+01 1.30E+02 3.75E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 163 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes101200-48-0 Pesticides express
22224-92-6 Pesticides fenamiphos2164-17-2 Pesticides fluometuron
206-44-0 PAHs fluoranthene86-73-7 PAHs fluorene
16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES59756-60-4 Pesticides fluridone56425-91-3 Pesticides flurprimidol66332-96-5 Pesticides flutolanil69409-94-5 Pesticides fluvalinate
133-07-3 Pesticides folpet72178-02-0 Pesticides fomesafen
944-22-9 Pesticides fonofos50-00-0 VOCs formaldehyde64-18-6 VOCs formic acid
39148-24-8 Pesticides fosetyl-al110-00-9 Furans furan
67-45-8 SVOCs furazolidone98-01-1 VOCs furfural
531-82-8 SVOCs furium60568-05-0 Pesticides furmecyclox77182-82-2 Pesticides glufosinate-ammonium
765-34-4 VOCs glycidaldehyde1071-83-6 SVOCs glyphosate
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion69806-40-2 Pesticides haloxyfop-methyl79277-27-3 Pesticides harmony
76-44-8 Pesticides heptachlor1024-57-3 Pesticides heptachlor epoxide
142-82-5 VOCs heptane;n-87-82-1 SVOCs hexabromobenzene
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'-118-74-1 Pesticides hexachlorobenzene
87-68-3 VOCs hexachlorobutadiene319-84-6 Pesticides hexachlorocyclohexane;alpha319-85-7 Pesticides hexachlorocyclohexane;beta-608-73-1 SVOCs hexachlorocyclohexane;technical
77-47-4 Pesticides hexachlorocyclopentadiene34465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture
67-72-1 VOCs hexachloroethane70-30-4 SVOCs hexachlorophene
822-06-0 VOCs hexamethylene diisocyanate;1,6-110-54-3 VOCs hexane;n-591-78-6 VOCs hexanone;2-
51235-04-2 Pesticides hexazinone302-01-2 VOCs hydrazine
10034-93-2 SVOCs hydrazine sulfate7647-01-0 VOCs hydrogen chloride
74-90-8 Cyanides hydrogen cyanide7783-06-4 VOCs hydrogen sulfide
123-31-9 SVOCs hydroquinone35554-44-0 Pesticides imazalil81335-37-7 Pesticides imazaquin
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione
7439-89-6 Metals iron
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.60E+01 6.00E+00 2.00E+01 1.60E+01 6.00E+00 2.00E+01 1.15E+034.20E+02 1.00E+01 5.00E+01 6.10E+02 1.00E+01 7.00E+01 3.00E+01
1.00E-02
9.90E-06 3.40E-07 5.90E-06 5.30E-02 5.30E-02 3.60E-03 3.60E-03 1.00E-05 3.40E-07 5.90E-06 1.12E+047.40E-06 2.40E-06 3.20E-05 5.30E-02 3.60E-03 7.40E-06 2.40E-06 3.20E-05 1.12E+04
5.10E-05 5.00E-06 7.90E-05 5.20E-05 5.00E-06 7.90E-05 8.69E+036.90E-01 1.00E-02 1.00E-02 4.10E+00 1.00E-02 1.00E-02 2.78E+005.00E-04 4.80E-05 3.60E-04 5.60E-04 4.80E-05 3.90E-04 1.30E+021.80E-03 1.30E-03 8.00E-03 2.00E-03 1.40E-03 1.40E-02 1.30E+02
6.60E-03 1.00E-021.50E+02 1.00E+00 4.00E+00 6.30E+02 1.00E+00 4.00E+00 4.34E+00
1.10E-01 2.00E-02 1.00E-01 1.30E-01 2.00E-02 1.00E-01 8.69E+01
2.00E+00
1.40E-02 1.60E-04 1.20E-03 2.10E-02 1.60E-04 1.30E-03 3.00E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 164 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes78-83-1 VOCs isobutyl alcohol78-59-1 SVOCs isophorone
33820-53-0 Pesticides isopropalin1832-54-8 SVOCs isopropyl methyl phosphonic acid
82558-50-7 Pesticides isoxaben77501-63-4 Pesticides lactofen
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane
330-55-2 Pesticides (Carbamate) linuron7791-03-9 Perchlorates lithium perchlorate
83055-99-6 Pesticides londax121-75-5 Pesticides malathion108-31-6 SVOCs maleic anhydride123-33-1 SVOCs maleic hydrazide109-77-3 VOCs malononitrile
8018-01-7 Pesticides mancozeb12427-38-2 Pesticides maneb
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES
950-10-7 Pesticides mephosfolan24307-26-4 Pesticides mepiquat chloride
7487-94-7 Metal compounds mercuric chloride7439-97-6 Metals mercury
150-50-5 Pesticides merphos57837-19-1 Pesticides metalaxyl
126-98-7 VOCs methacrylonitrile10265-92-6 Pesticides methamidosphos
67-56-1 VOCs methanol950-37-8 Pesticides methidathion
16752-77-5 Pesticides (Carbamate) methomyl99-59-2 SVOCs methoxy-5-nitroaniline;2-72-43-5 Pesticides methoxychlor
110-49-6 VOCs methoxyethanol acetate;2-109-86-4 VOCs methoxyethanol;2-
79-20-9 VOCs methyl acetate96-33-3 VOCs methyl acrylate78-93-3 VOCs methyl ethyl ketone
108-10-1 VOCs methyl isobutyl ketone22967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES
80-62-6 VOCs methyl methacrylate90-12-0 PAHs methyl naphthalene;1-91-57-6 PAHs methyl naphthalene;2-
298-00-0 Pesticides methyl parathion25013-15-4 VOCs methyl styrene
98-83-9 VOCs methyl styrene, alpha1634-04-4 VOCs methyl tert-butyl ether
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2-99-55-8 SVOCs methyl-5-nitroaniline;2-
636-21-5 SVOCs methylaniline hydrochloride;2-95-53-4 VOCs methylaniline;2-
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'-101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'-
74-95-3 VOCs methylene bromide75-09-2 VOCs methylene chloride
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI)9016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI)
101-77-9 SVOCs methylenebisbenzenamine;4,4-60-34-4 VOCs methylhydrazine
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
2.70E+01 3.40E+01 1.10E+02 1.80E+03 4.38E+00
2.10E+02 2.10E+02 8.10E+00 8.10E+001.50E+01 4.30E-01 4.20E+00 1.60E-01 1.60E-01 1.70E+01 4.30E-01 4.40E+00 1.30E+02
1.00E-01
5.00E+01 1.00E+025.00E+01 1.00E+02
1.80E+00 1.80E+00 2.50E-02 9.40E-01
2.00E-02 3.00E-02 2.00E-02 1.55E+03
1.00E+00 3.00E-02 3.00E-01
1.60E+01 1.00E+01 2.00E+01 2.50E+02 1.00E+02 1.00E+03 9.00E-01
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 165 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes51218-45-2 Pesticides metolachlor21087-64-9 Pesticides metribuzin
2385-85-5 Pesticides mirex2212-67-1 Pesticides molinate7439-98-7 Metals molybdenum
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS300-76-5 Pesticides naled
91-20-3 PAHs naphthalene15299-99-7 Pesticides napropamide
104-51-8 VOCs n-butylbenzeneE715532 Metals nickel refinery dust
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT12035-72-2 Metal compounds nickel subsulfide14797-55-8 Nutrients nitrate14797-65-0 Nutrients nitrite
88-74-4 SVOCs nitroaniline, 2-100-01-6 SVOCs nitroaniline, 4-
98-95-3 Explosives nitrobenzene67-20-9 SVOCs nitrofurantoin59-87-0 SVOCs nitrofurazone
556-88-7 SVOCs nitroguanidine79-46-9 VOCs nitropropane;2-
1116-54-7 SVOCs nitrosodiethanolamine;N-55-18-5 SVOCs nitrosodiethylamine;N-62-75-9 SVOCs nitrosodimethylamine;N-
924-16-3 VOCs nitroso-di-n-butylamine;N-621-64-7 SVOCs nitroso-di-n-propylamine;N-
86-30-6 SVOCs nitrosodiphenylamine;N-759-73-9 SVOCs nitroso-n-ethylurea;n-
10595-95-6 SVOCs nitroso-N-methylethylamine;N-684-93-5 SVOCs nitroso-n-methylurea,n-930-55-2 SVOCs nitrosopyrrolidine;N-
99-08-1 Explosives nitrotoluene, m-88-72-2 Explosives nitrotoluene, o-99-99-0 Explosives nitrotoluene, p-
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon85509-19-9 Pesticides nustar32536-52-0 PBDEs octabromodiphenyl ether
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine152-16-9 SVOCs octamethylpyrophosphoramide
19044-88-3 Pesticides oryzalin19666-30-9 Pesticides oxadiazon23135-22-0 Pesticides (Carbamate) oxamyl42874-03-3 Pesticides oxyfluorfen76738-62-0 Herbicides paclobutrazol
1910-42-5 Pesticides Paraquat Dichloride56-38-2 Pesticides parathion
1114-71-2 Pesticides pebulate40487-42-1 Pesticides pendimethalin
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5-60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5-32534-81-9 PBDEs pentabromodiphenyl ethers
608-93-5 SVOCs pentachlorobenzene82-68-8 Pesticides pentachloronitrobenzene87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT
14797-73-0 Perchlorates perchlorate and perchlorate salts52645-53-1 Pesticides permethrin
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.00E-03
1.05E+01
1.50E+02 8.00E+01 6.10E+02 7.40E+01 7.40E+01 8.20E+00 8.20E+00 1.90E+02 1.00E+02 4.60E+03 4.70E+01
1.00E+04
5.50E+01 3.00E+01 1.00E+01 3.20E+02 1.00E+02 6.00E+02 2.89E+00
8.00E-04 1.20E+006.50E-04 6.90E-04 3.40E-01 3.00E+00 2.60E-02
6.30E-03 2.20E-014.40E-03 5.00E-03 5.80E-02 5.10E-01 1.13E+006.20E-01 3.30E+00 6.90E-01 6.00E+00 1.36E+02
1.60E-02 3.40E+01
7.00E+00 1.70E+00
3.20E+00
8.10E+03
1.00E-01 1.00E-01
4.60E-02 2.00E-03 3.00E-02 1.30E+01 1.30E+01 7.90E+00 7.90E+00 1.00E-01 2.00E-03 4.00E-02 1.10E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 166 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notesunavailable19 General Chemistry pH pH NOTES
13684-63-4 Pesticides phenmedipham108-95-2 Phenols phenol106-50-3 SVOCs phenylenediamine, p-108-45-2 SVOCs phenylenediamine;m-
95-54-5 SVOCs phenylenediamine;o-62-38-4 Metals (organometallic) phenylmercuric acetate90-43-7 Phenols phenylphenol;2-
298-02-2 Pesticides phorate75-44-5 VOCs phosgene
732-11-6 Pesticides phosmet7803-51-2 Gases phosphine7664-38-2 SVOCs phosphoric acid7723-14-0 Nonmetal inorganics phosphorus
100-21-0 Phthalates phthalic acid;p-85-44-9 Phthalates phthalic anhydride
1918-02-1 Herbicides picloram29232-93-7 Pesticides pirimiphos-methyl36355-01-8 PBBs polybrominated biphenyls
1336-36-3 PCBs polychlorinated biphenyls (PCBs)151-50-8 Cyanides potassium cyanide
7778-74-7 Perchlorates potassium perchlorate506-61-6 Cyanides potassium silver cyanide
67747-09-5 Pesticides prochloraz (not in HSDB)26399-36-0 Pesticides profluralin
1610-18-0 Pesticides prometon7287-19-6 Pesticides prometryn
23950-58-5 Pesticides pronamide1918-16-7 Pesticides propachlor
709-98-8 Pesticides propanil2312-35-8 Pesticides propargite
107-19-7 VOCs propargyl alcohol139-40-2 Pesticides propazine122-42-9 Pesticides propham
60207-90-1 Pesticides propiconazole123-38-6 VOCs propionaldehyde
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2-103-65-1 VOCs propylbenzene;n-
57-55-6 Glycols propylene glycol6423-43-4 Glycols propylene glycol dinitrate;1,2-
52125-53-8 Glycols propylene glycol monoethyl ether107-98-2 Glycols propylene glycol monomethyl ether
75-56-9 VOCs propylene oxide81335-77-5 Pesticides pursuit51630-58-1 Pesticides pydrin
129-00-0 PAHs pyrene110-86-1 VOCs pyridine
13593-03-8 Pesticides quinalphos91-22-5 SVOCs quinoline
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdxE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE
10453-86-8 Pesticides resmethrin299-84-3 Pesticides ronnel
83-79-4 Pesticides rotenone78-48-8 Pesticides s,s;s-tributylphosphorotrithioate
78587-05-0 Pesticides savey
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
5 – 9 6.5 – 8.5
1.80E+04 9.00E+03 4.00E+03 2.00E+05 7.00E+04 3.00E+05 1.40E+00
1.70E-04 7.00E-06 6.40E-05 1.00E+01 3.00E-02 3.00E-02 1.70E-04 7.00E-06 6.40E-05 3.12E+04
3.10E+02 8.00E+00 2.00E+01 4.60E+02 8.00E+00 3.00E+01 3.00E+01
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 167 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes135-98-8 VOCs sec-butylbenzene
7783-00-8 Metal compounds selenious acid7782-49-2 Metals selenium and compounds
74051-80-2 Pesticides sethoxydim7440-22-4 Metals SILVER HARDNESS - DEPENDENT
506-64-9 Cyanides silver cyanide122-34-9 Pesticides simazine
26628-22-8 Metal compounds sodium azide143-33-9 Cyanides sodium cyanide148-18-5 Metals (organometallic) sodium diethyldithiocarbamate
62-74-8 Metals (organometallic) sodium fluoroacetate13718-26-8 Metal compounds sodium metavanadate
7601-89-0 Perchlorates sodium perchlorate7440-24-6 Metals strontium
57-24-9 SVOCs strychnine100-42-5 VOCs styrene
88671-89-0 Pesticides systhane1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES
34014-18-1 Pesticides tebuthiuron3383-96-8 Pesticides temephos5902-51-2 Pesticides terbacil
13071-79-9 SVOCs terbufos886-50-0 Pesticides terbutryn
98-06-6 VOCs tert-butylbenzene5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4'
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5-630-20-6 VOCs tetrachloroethane;1,1,1,2-
79-34-5 VOCs tetrachloroethane;1,1,2,2-127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,-
961-11-5 Pesticides tetrachlorvinphos3689-24-5 Pesticides tetraethyl dithiopyrophosphate
78-00-2 Metals (organometallic) tetraethyl lead811-97-2 VOCs tetrafluoroethane;1,1,1,2-109-99-9 Furans tetrahydrofuran
1314-32-5 Metal compounds thallic oxide563-68-8 Metal compounds thallium acetate
6533-73-9 Metal compounds thallium carbonate7791-12-0 Metal compounds thallium chloride
10102-45-1 Metal compounds thallium nitrate12039-52-0 Metal compounds thallium selenite
7446-18-6 Metal compounds thallium(I) sulfate7440-28-0 Metals thallium, soluble salts
28249-77-6 Pesticides thiobencarb21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2-39196-18-4 Pesticides thiofanox23564-05-8 Pesticides thiophanate-methyl
137-26-8 Pesticides thiram7440-31-5 Metals tin
118-96-7 Explosives tnt108-88-3 VOCs toluene
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6-584-84-9 VOCs toluene-2,4-diisocyanate
91-08-7 VOCs toluene-2,6-diisocyanate95-70-5 SVOCs toluenediamine;2,5-
106-49-0 SVOCs toluidine;p-8001-35-2 Pesticides toxaphene
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.20E+02 6.00E+01 1.70E+02 2.90E+02 2.90E+02 7.10E+01 7.10E+01 4.80E+02 2.00E+02 4.20E+03 4.80E+00
1.90E+00 1.90E+00 5.00E-01
6.40E-08 1.30E-08 5.00E-09 6.40E-08 1.40E-08 5.10E-09 5.00E+03
3.00E-02 3.00E-02
1.20E-01 1.00E-01 2.00E-01 4.60E-01 3.00E-01 3.00E+00 5.00E+004.90E+00 2.40E+00 1.00E+01 7.10E+00 2.90E+00 2.90E+01 3.10E+01
2.40E-01 1.70E+00 2.40E-01 2.70E-01 6.30E+00 4.70E-01 1.16E+02
1.80E+02 7.20E+01 5.70E+01 4.10E+02 1.30E+02 5.20E+02 1.07E+01
3.20E-05 7.00E-04 2.10E-01 2.10E-01 2.00E-04 2.00E-04 3.20E-05 7.10E-04 1.31E+04
Washington State Department of Ecology - CLARC Surface Water Table (Methods C and ARARs) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 168 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes93-72-1 Herbicides tp;2,4,5-
unavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin2303-17-5 Pesticides triallate
82097-50-5 Pesticides triasulfuron615-54-3 VOCs tribromobenzene;1,2,4-688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2-76-03-9 SVOCs trichloroacetic acid
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6-634-93-5 SVOCs trichloroaniline;2,4,6-120-82-1 VOCs trichlorobenzene;1,2,4-
71-55-6 VOCs trichloroethane;1,1,1-79-00-5 VOCs trichloroethane;1,1,2-79-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES75-69-4 VOCs trichlorofluoromethane95-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5-
598-77-6 VOCs trichloropropane;1,1,2-96-18-4 VOCs trichloropropane;1,2,3-96-19-5 VOCs trichloropropene;1,2,3-
58138-08-2 Pesticides tridiphane121-44-8 VOCs triethylamine
1582-09-8 Pesticides trifluralinunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate526-73-8 VOCs trimethylbenzene;1,2,3-
95-63-6 VOCs trimethylbenzene;1,2,4-108-67-8 VOCs trimethylbenzene;1,3,5-
99-35-4 Explosives trinitrobenzene;1,3,5-479-45-8 Explosives trinitrophenylmethylnitramine
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS7440-62-2 Metals vanadium1314-62-1 Metal compounds vanadium pentoxide1929-77-7 Pesticides vernam
50471-44-8 Pesticides vinclozolin108-05-4 VOCs vinyl acetate
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES81-81-2 Pesticides warfarin
8012-95-1 Petroleum white mineral oil108-38-3 VOCs xylene;m-
95-47-6 VOCs xylene;o-106-42-3 VOCs xylene;p-
1330-20-7 VOCs xylenes7440-66-6 Metals ZINC HARDNESS - DEPENDENT
557-21-1 Cyanides zinc cyanide1314-84-7 Metal compounds zinc phosphide
12122-67-7 Pesticides zineb
SurfaceWater
Human HealthFresh Water
173-201A WAC(µg/L)
SurfaceWater
Human HealthFresh Water
40 CFR 131.45(µg/L)
SurfaceWater
Human HealthFresh WaterCWA §304
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Acute
CWA §304(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic173-201A WAC
(µg/L)
SurfaceWater
Aquatic LifeMarine/Chronic
CWA §304(µg/L)
SurfaceWater
Human HealthMarine Waters173-201A WAC
(µg/L)
SurfaceWater
Human HealthMarine Waters40 CFR 131.45
(µg/L)
SurfaceWater
Human HealthMarine Waters
CWA §304(µg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
1.00E+02 4.00E+02
4.20E-01 7.40E-03
1.20E-01 3.60E-02 7.10E-02 1.40E-01 3.70E-02 7.60E-02 1.14E+024.70E+04 2.00E+04 1.00E+04 1.60E+05 5.00E+04 2.00E+05 5.60E+004.40E-01 3.50E-01 5.50E-01 1.80E+00 9.00E-01 8.90E+00 4.50E+003.80E-01 3.00E-01 6.00E-01 8.60E-01 7.00E-01 7.00E+00 1.10E+01
3.00E+02 6.00E+022.50E-01 1.50E+00 2.80E-01 2.80E+00 1.50E+02
2.00E-02 2.20E-02 2.60E-01 1.80E-01 1.60E+00 1.17E+00
2.30E+03 1.00E+03 7.40E+03 9.00E+01 9.00E+01 8.10E+01 8.10E+01 2.90E+03 1.00E+03 2.60E+04 4.70E+01
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 169 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
83-32-9 PAHs acenaphthene 6.00E-02 I30560-19-1 Pesticides acephate 1.20E-03 O
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-03 4.10E+00 1.10E+00 9.00E+00 1.10E+0134256-82-1 Pesticides acetochlor 2.00E-02 I
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I 1.40E+04 3.10E+0475-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-04 9.10E-01 2.00E+0075-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-02 2.70E+01 6.00E+0198-86-2 SVOCs acetophenone 1.00E-01 I
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 9.10E-03 2.00E-02
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M 2.70E+00 6.60E-03 6.00E+00 2.50E-0179-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I 4.60E-01 1.00E+00
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 9.10E-01 3.70E-02 2.00E+00 3.70E-0115972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C 4.90E-01 4.90E+00116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 5.10E-04 5.10E-03
74223-64-6 Pesticides ally 2.50E-01 I107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I 4.60E-02 1.00E-01107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C 4.60E-01 4.20E-01 1.00E+00 4.20E+00
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P 2.30E+00 5.00E+0020859-73-8 Metal compounds aluminum phosphide 4.00E-04 I67485-29-4 Pesticides amdro 1.70E-02 O
834-12-8 Pesticides ametryn 9.00E-03 I591-27-5 Phenols aminophenol;m- 8.00E-02 P
33089-61-1 Pesticides amitraz 2.50E-03 I7664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-01 2.30E+02 5.00E+027790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I7773-06-0 Pesticides ammonium sulfamate 2.00E-01 I
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I 4.60E-01 1.60E+00 1.00E+00 1.60E+01120-12-7 PAHs anthracene 3.00E-01 I
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 1.40E-01 3.00E-011314-60-9 Metal compounds antimony pentoxide 5.00E-04 H
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H1332-81-6 Metal compounds antimony tetroxide 4.00E-04 H1309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05 9.10E-02 2.00E-01
74115-24-5 Pesticides apollo 1.30E-02 I140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I 3.50E-01 3.50E+00
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 1.30E-01 1.30E+0011097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 4.40E-03 4.40E-0211096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S 4.40E-03 4.40E-02
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 6.90E-03 5.80E-04 1.50E-02 5.80E-037784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C 2.30E-02 5.00E-021332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I
76578-14-8 Pesticides assure 9.00E-03 I3337-71-1 Pesticides asulam 3.60E-02 O1912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C
65195-55-3 Pesticides avermectin B1 4.00E-04 I103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I 8.10E-02 8.10E-01
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I 2.30E-01 5.00E-01114-26-1 Pesticides baygon 4.00E-03 I
43121-43-3 Pesticides bayleton 3.40E-02 O68359-37-5 Pesticides baythroid 2.50E-02 I
1861-40-1 Pesticides benefin 5.00E-03 O17804-35-2 Pesticides benomyl 5.00E-02 I25057-89-0 Herbicides bentazon 3.00E-02 I
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 170 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
71-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 1.40E+01 3.20E-01 3.00E+01 3.20E+00108-98-5 SVOCs benzenethiol 1.00E-03 P
92-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 3.70E-05 3.70E-0456-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES50-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 9.10E-04 1.10E-03 2.00E-03 4.20E-02
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I98-07-7 VOCs benzotrichloride 1.30E+01 I
100-51-6 SVOCs benzyl alcohol 1.00E-01 P100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I 4.60E-01 5.10E-02 1.00E+00 5.10E-01
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 9.10E-03 1.00E-03 2.00E-02 1.00E-0291-58-7 PAHs beta-chloronaphthalene 8.00E-02 I
141-66-2 Pesticides bidrin 3.00E-05 O82657-04-3 Pesticides biphenthrin 1.50E-02 I
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I 1.80E-01 4.00E-01108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 2.50E-01 2.50E+00111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 7.60E-03 7.60E-02117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 1.00E+00 1.00E+01542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I 4.00E-05 4.00E-04
80-05-7 Phenols bisphenol a 5.00E-02 I7440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I 9.10E+00 2.00E+01
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I79-08-3 SVOCs bromoacetic acid
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I 2.70E+01 6.00E+0175-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 6.80E-02 6.80E-01
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-01 1.40E+00 7.80E-02 3.00E+00 7.80E-0175-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 2.30E+00 2.30E+0174-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 2.30E+00 5.00E+00
2104-96-3 Pesticides bromophos 5.00E-03 H1689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O1689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C 9.10E-01 8.30E-02 2.00E+00 8.30E-0171-36-3 VOCs butanol;n- 1.00E-01 I85-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P
2008-41-5 Pesticides butylate 5.00E-02 I85-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O75-60-5 Pesticides cacodylic acid 2.00E-02 A
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I 4.60E-03 1.40E-03 1.00E-02 1.40E-027440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 4.60E-03 1.40E-03 1.00E-02 1.40E-02
592-01-8 Cyanides calcium cyanide 1.00E-03 I105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I 1.00E+00 2.20E+00
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C 5.80E-02 5.80E-01133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C 3.80E+00 3.80E+01
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I1563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I 3.20E+02 7.00E+0256-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 4.60E+01 4.20E-01 1.00E+02 4.20E+00
55285-14-8 Pesticides carbosulfan 1.00E-02 I5234-68-4 Pesticides carboxin 1.00E-01 I1306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04 4.10E-01 9.00E-01
302-17-0 VOCs chloral hydrate 1.00E-01 I133-90-4 Herbicides chloramben 1.50E-02 I118-75-2 Pesticides chloranil 4.00E-01 H
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 3.20E-01 2.50E-02 7.00E-01 2.50E-01143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I 5.40E-04 5.40E-03
16887-00-6 Nutrients chloride
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 171 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
90982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 6.90E-02 1.50E-01
506-77-4 Cyanides chlorine cyanide 5.00E-02 I10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I 9.10E-02 2.00E-01
7758-19-2 Nutrients chlorite 3.00E-02 I75-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01 2.30E+04 5.00E+04
126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H 9.10E+00 8.30E-03 2.00E+01 8.30E-023165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H
95-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P 3.20E-02 3.20E-0179-11-8 SVOCs chloroacetic acid 2.00E-03 H
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06 1.40E-02 3.00E-02106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 2.30E+01 5.00E+01510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C 8.10E-02 8.10E-01
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X98-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P 1.40E+02 3.00E+02
109-69-3 VOCs chlorobutane;1- 4.00E-02 P59-50-7 Phenols chlorocresol 1.00E-01 A75-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+01 2.30E+04 5.00E+0467-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 4.50E+01 1.10E-01 9.80E+01 1.10E+0074-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02 4.10E+01 9.00E+01
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C 3.60E-03 3.60E-0288-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P 4.60E-03 1.00E-02
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P 9.10E-01 2.00E+0095-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C95-49-8 VOCs chlorotoluene;o- 2.00E-02 I
101-21-3 Pesticides chlorpropham 5.00E-02 O2921-88-2 Pesticides chlorpyrifos 1.00E-03 A5598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O60238-56-4 Pesticides chlorthiophos 8.00E-04 H
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES16065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I18540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 4.60E-02 3.00E-05 1.00E-01 3.00E-04
218-01-9 cPAHs CHRYSENE PAH NOTES7440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P 2.70E-03 2.80E-04 6.00E-03 2.80E-03
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+00 4.00E-03 4.00E-027440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H
544-92-3 Cyanides copper cyanide 5.00E-03 I108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I 2.70E+02 6.00E+02
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I 2.70E+02 6.00E+02106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A 2.70E+02 6.00E+02123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I 1.80E+02 4.00E+0221725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 3.70E-01 8.00E-01460-19-5 Cyanides cyanogen 1.00E-03 I506-68-3 Cyanides cyanogen bromide 9.00E-02 I110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00 2.70E+03 6.00E+03108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I 3.20E+02 7.00E+02108-91-8 VOCs cyclohexylamine 2.00E-01 I
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O52315-07-8 Pesticides cypermethrin 2.30E-02 O66215-27-8 Pesticides cyromazine 5.00E-01 O
1861-32-1 Herbicides dacthal 1.00E-02 I75-99-0 Herbicides dalapon, sodium salt 3.00E-02 I
39515-41-8 Pesticides danitol 2.50E-02 I
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 172 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
94-82-6 Pesticides db;2,4- 3.00E-02 O72-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 3.60E-02 3.60E-0172-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 2.60E-02 2.60E-0150-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 2.60E-02 2.60E-01
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I8065-48-3 Pesticides demeton 4.00E-05 I
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I2303-16-4 Pesticides diallate 6.10E-02 H
333-41-5 Pesticides diazinon 7.00E-04 A53-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES
132-64-9 PAHs dibenzofuran 1.00E-03 X96-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P 9.10E-02 4.20E-04 2.00E-01 4.20E-03
631-64-1 SVOCs dibromoacetic acid106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I1918-00-9 Herbicides dicamba 3.00E-02 I3400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+01 6.00E-04 6.00E-0379-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I95-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 9.10E+01 2.00E+02
541-73-1 VOCs dichlorobenzene;1,3-106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 3.70E+02 2.30E-01 8.00E+02 2.30E+00
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 7.40E-03 7.40E-0275-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I 4.60E+01 1.00E+0275-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C 1.60E+00 1.60E+01
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 3.20E+00 9.60E-02 7.00E+00 9.60E-01540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 9.10E+01 2.00E+02156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I78-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 1.80E+00 6.80E-01 4.00E+00 6.80E+00
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 9.10E+00 6.30E-01 2.00E+01 6.30E+00
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I 2.30E-01 3.00E-02 5.00E-01 3.00E-0177-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P 1.40E-01 3.00E-0160-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 5.40E-04 5.40E-0384-66-2 Phthalates diethyl phthalate 8.00E-01 I
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P 4.60E-02 1.00E-01111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P 1.40E-01 3.00E-01617-84-5 SVOCs diethylformamide 1.00E-03 P
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C 2.50E-05 2.50E-0443222-48-6 Pesticides difenzoquat 8.30E-02 O35367-38-5 Pesticides diflubenzuron 2.00E-02 I
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+01 1.80E+04 4.00E+041445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I
55290-64-7 Pesticides dimethipin 2.20E-02 O60-51-5 Pesticides dimethoate 2.20E-03 O
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P131-11-3 Phthalates dimethyl phthalate120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H95-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P 1.40E+01 3.00E+01
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 173 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
57-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X 9.10E-04 2.00E-03540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C 1.60E-05 1.60E-04105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I99-65-0 Explosives dinitrobenzene;m- 1.00E-04 I
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I25550-58-7 Phenols dinitrophenols
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 2.80E-02 2.80E-01606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P
88-85-7 Herbicides dinoseb 1.00E-03 I123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I 1.40E+01 5.00E-01 3.00E+01 5.00E+00957-51-7 Pesticides diphenamid 3.00E-02 I122-39-4 Pesticides diphenylamine 1.00E-01 O122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 1.10E-02 1.10E-01
85-00-7 Pesticides diquat 2.20E-03 I1937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C 1.20E-03 1.20E-022602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C 1.20E-03 1.20E-02
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C 1.30E-03 1.30E-02298-04-4 Pesticides disulfoton 4.00E-05 I505-29-3 SVOCs dithiane;1,4- 1.00E-02 I330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I534-52-1 Phenols DNOC 8.00E-05 X
2439-10-3 Pesticides dodine 2.00E-02 O115-29-7 Pesticides endosulfan 6.00E-03 I
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P959-98-8 Pesticides endosulfan;alpha
33213-65-9 Pesticides endosulfan;beta145-73-3 Herbicides endothall 2.00E-02 I
72-20-8 Pesticides endrin 3.00E-04 I7421-93-4 Pesticides endrin aldehyde
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I 4.60E-01 2.10E+00 1.00E+00 2.10E+01106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03 9.10E+00 2.00E+01
16672-87-0 Pesticides ethephon 5.00E-03 I563-12-2 Pesticides ethion 5.00E-04 I111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P 2.70E+01 6.00E+01110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P 9.10E+01 2.00E+02141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I 3.20E+01 7.00E+01140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H 3.70E+00 8.00E+00
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00 4.60E+03 1.00E+04759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O
60-29-7 VOCs ethyl ether 2.00E-01 I97-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H 1.40E+02 3.00E+02
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 4.60E+02 1.00E+03109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P107-15-3 VOCs ethylene diamine 9.00E-02 P106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I 4.10E+00 4.20E-03 9.00E+00 4.20E-02107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I 1.80E+02 4.00E+02111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I 7.30E+02 1.60E+03
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C 1.40E+01 2.20E-04 3.00E+01 8.30E-0396-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C 1.90E-01 1.90E+0084-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 174 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
101200-48-0 Pesticides express 8.00E-03 I22224-92-6 Pesticides fenamiphos 2.50E-04 I
2164-17-2 Pesticides fluometuron 1.30E-02 I206-44-0 PAHs fluoranthene 4.00E-02 I
86-73-7 PAHs fluorene 4.00E-02 I16984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I 5.90E+00 1.30E+0159756-60-4 Pesticides fluridone 8.00E-02 I56425-91-3 Pesticides flurprimidol 4.00E-02 O66332-96-5 Pesticides flutolanil 5.00E-01 O69409-94-5 Pesticides fluvalinate 1.00E-02 I
133-07-3 Pesticides folpet 9.00E-02 O72178-02-0 Pesticides fomesafen 2.50E-03 O
944-22-9 Pesticides fonofos 2.00E-03 I50-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C 4.50E+00 1.90E-01 9.80E+00 1.90E+0064-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P 1.40E-01 3.00E-01
39148-24-8 Pesticides fosetyl-al 2.50E+00 O110-00-9 Furans furan 1.00E-03 I
67-45-8 SVOCs furazolidone 3.80E+00 H98-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I 2.30E+01 5.00E+01
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C 5.80E-03 5.80E-0260568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I 2.90E-01 2.90E+0077182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I 4.60E-01 1.00E+001071-83-6 SVOCs glyphosate 1.00E-01 I
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTEunavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE
86-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 4.60E+00 1.00E+0169806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I79277-27-3 Pesticides harmony 4.30E-02 O
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 1.90E-03 1.90E-021024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 9.60E-04 9.60E-03
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X 1.80E+02 4.00E+0287-82-1 SVOCs hexabromobenzene 2.00E-03 I
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 5.40E-03 5.40E-02
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 1.10E-01 1.10E+00319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 1.40E-03 1.40E-02319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 4.70E-03 4.70E-02608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I 4.90E-03 4.90E-02
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 9.10E-02 2.00E-0134465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I 1.90E-06 1.90E-05
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 1.40E+01 2.30E-01 3.00E+01 2.30E+0070-30-4 SVOCs hexachlorophene 3.00E-04 I
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06 4.60E-03 1.00E-02110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H 3.20E+02 7.00E+02591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I 1.40E+01 3.00E+01
51235-04-2 Pesticides hexazinone 3.30E-02 I302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I 1.40E-02 5.10E-04 3.00E-02 5.10E-03
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I 5.10E-04 5.10E-037647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03 9.10E+00 2.00E+01
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I 3.70E-01 8.00E-017783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04 9.10E-01 2.00E+00
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P35554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O81335-37-7 Pesticides imazaquin 2.50E-01 I
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES36734-19-7 Pesticides iprodione 4.00E-02 I
7439-89-6 Metals iron 7.00E-01 P
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 175 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
78-83-1 VOCs isobutyl alcohol 3.00E-01 I78-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 9.10E+02 2.00E+03
33820-53-0 Pesticides isopropalin 1.50E-02 I1832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I
82558-50-7 Pesticides isoxaben 5.00E-02 I77501-63-4 Pesticides lactofen 8.00E-03 O
7439-92-1 Metals LEAD LEAD NOTES58-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 8.10E-03 8.10E-02
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O7791-03-9 Perchlorates lithium perchlorate 7.00E-04 I
83055-99-6 Pesticides londax 2.00E-01 I121-75-5 Pesticides malathion 2.00E-02 I108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I 3.20E-01 7.00E-01123-33-1 SVOCs maleic hydrazide 5.00E-01 I109-77-3 VOCs malononitrile 1.00E-04 P
8018-01-7 Pesticides mancozeb 3.00E-02 H12427-38-2 Pesticides maneb 5.00E-03 I
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I7439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I 2.30E-02 5.00E-02
950-10-7 Pesticides mephosfolan 9.00E-05 H24307-26-4 Pesticides mepiquat chloride 3.00E-02 I
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I 1.40E-01 3.00E-017439-97-6 Metals mercury 3.00E-04 I 8.57E-05 1.40E-01 3.00E-01
150-50-5 Pesticides merphos 3.00E-05 I57837-19-1 Pesticides metalaxyl 6.00E-02 I
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I 1.40E+01 3.00E+0110265-92-6 Pesticides methamidosphos 5.00E-05 I
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I 9.10E+03 2.00E+04950-37-8 Pesticides methidathion 1.50E-03 O
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I99-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C72-43-5 Pesticides methoxychlor 5.00E-03 I
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P 4.60E-01 1.00E+00109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P 9.10E+00 2.00E+01
79-20-9 VOCs methyl acetate 1.00E+00 X96-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H 9.10E+00 2.00E+0178-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I 2.30E+03 5.00E+03
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H 1.40E+03 3.00E+0322967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I 3.20E+02 7.00E+0290-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P91-57-6 PAHs methyl naphthalene;2- 4.00E-03 I
298-00-0 Pesticides methyl parathion 2.50E-04 I25013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H 1.80E+01 4.00E+01
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H1634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C 1.40E+03 9.60E+00 3.00E+03 9.60E+01
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I99-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C 6.80E-02 6.80E-0195-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P 4.90E-02 4.90E-01
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P 5.80E-03 5.80E-02101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I 1.90E-01 1.90E+00
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H 1.80E+00 4.00E+0075-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 2.70E+02 6.60E+01 6.00E+02 2.50E+03
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-04 2.70E-01 6.00E-019016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04 2.70E-01 6.00E-01
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C 9.10E+00 5.40E-03 2.00E+01 5.40E-0260-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P 9.10E-03 2.50E-03 2.00E-02 2.50E-02
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 176 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
51218-45-2 Pesticides metolachlor 1.50E-01 I21087-64-9 Pesticides metribuzin 2.50E-02 I
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 4.90E-04 4.90E-032212-67-1 Pesticides molinate 2.00E-03 I7439-98-7 Metals molybdenum 5.00E-03 I
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I300-76-5 Pesticides naled 2.00E-03 I
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 1.40E+00 7.40E-02 3.00E+00 7.40E-0115299-99-7 Pesticides napropamide 1.20E-01 O
104-51-8 VOCs n-butylbenzene 5.00E-02 PE715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C 6.40E-03 1.00E-02 1.40E-02 1.00E-01
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 4.10E-02 9.60E-03 9.00E-02 9.60E-0212035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C 6.40E-03 5.20E-03 1.40E-02 5.20E-0214797-55-8 Nutrients nitrate 1.60E+00 I14797-65-0 Nutrients nitrite 1.00E-01 I
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X 2.30E-02 5.00E-02100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P 2.70E+00 6.00E+00
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 4.10E+00 6.30E-02 9.00E+00 6.30E-0167-20-9 SVOCs nitrofurantoin 7.00E-02 H59-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C 6.80E-03 6.80E-02
556-88-7 SVOCs nitroguanidine 1.00E-01 I79-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00 9.10E+00 9.30E-04 2.00E+01 9.30E-03
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I 3.10E-03 3.10E-0255-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I 5.80E-05 5.80E-0462-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 1.80E-02 1.80E-04 4.00E-02 1.80E-03
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I 1.60E-03 1.60E-02621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 1.30E-03 1.30E-02
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 9.60E-01 9.60E+00759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C 3.20E-04 3.20E-03
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I 4.00E-04 4.00E-03684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C 7.40E-05 7.40E-04930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I 4.10E-03 4.10E-02
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X88-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P99-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P
84852-15-3 Phenols nonylphenol27314-13-2 Pesticides norflurazon 1.50E-02 O85509-19-9 Pesticides nustar 2.00E-03 O32536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O19666-30-9 Pesticides oxadiazon 5.00E-03 I23135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I42874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O76738-62-0 Herbicides paclobutrazol 1.30E-02 I
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I56-38-2 Pesticides parathion 6.00E-03 H
1114-71-2 Pesticides pebulate 5.00E-02 H40487-42-1 Pesticides pendimethalin 3.00E-01 O
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I32534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I82-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H87-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 4.90E-01 4.90E+00
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I52645-53-1 Pesticides permethrin 5.00E-02 I
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 177 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
unavailable19 General Chemistry pH pH NOTES13684-63-4 Pesticides phenmedipham 2.40E-01 O
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 9.10E+01 2.00E+02106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H62-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I90-43-7 Phenols phenylphenol;2- 1.90E-03 H
298-02-2 Pesticides phorate 2.00E-04 H75-44-5 VOCs phosgene 3.00E-04 I 8.57E-05 1.40E-01 3.00E-01
732-11-6 Pesticides phosmet 2.00E-02 I7803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I 1.40E-01 3.00E-017664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P 4.60E+00 1.00E+017723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H85-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I 9.10E+00 2.00E+01
1918-02-1 Herbicides picloram 7.00E-02 I29232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O36355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C 2.90E-04 2.90E-03
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 4.40E-03 4.40E-02151-50-8 Cyanides potassium cyanide 2.00E-03 I
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I506-61-6 Cyanides potassium silver cyanide 5.00E-03 I
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I26399-36-0 Pesticides profluralin 6.00E-03 H
1610-18-0 Pesticides prometon 1.50E-02 I7287-19-6 Pesticides prometryn 4.00E-02 O
23950-58-5 Pesticides pronamide 7.50E-02 I1918-16-7 Pesticides propachlor 1.30E-02 I
709-98-8 Pesticides propanil 5.00E-03 I2312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O
107-19-7 VOCs propargyl alcohol 2.00E-03 I139-40-2 Pesticides propazine 2.00E-02 I122-42-9 Pesticides propham 2.00E-02 I
60207-90-1 Pesticides propiconazole 1.00E-01 O123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03 3.70E+00 8.00E+00
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X 4.60E+02 1.00E+03
57-55-6 Glycols propylene glycol 2.00E+01 P6423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05 1.20E-01 2.70E-01
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H 9.10E+02 2.00E+03
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I 1.40E+01 6.80E-01 3.00E+01 6.80E+0081335-77-5 Pesticides pursuit 2.50E+00 O51630-58-1 Pesticides pydrin 2.50E-02 I
129-00-0 PAHs pyrene 3.00E-02 I110-86-1 VOCs pyridine 1.00E-03 I
13593-03-8 Pesticides quinalphos 5.00E-04 I91-22-5 SVOCs quinoline 3.00E+00 I
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTEunavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 IE715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A
10453-86-8 Pesticides resmethrin 3.00E-02 I299-84-3 Pesticides ronnel 5.00E-02 H
83-79-4 Pesticides rotenone 4.00E-03 I78-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O
78587-05-0 Pesticides savey 2.50E-02 I
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 178 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
135-98-8 VOCs sec-butylbenzene 1.00E-01 X7783-00-8 Metal compounds selenious acid 5.00E-03 I7782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 9.10E+00 2.00E+01
74051-80-2 Pesticides sethoxydim 1.40E-01 O7440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I
506-64-9 Cyanides silver cyanide 1.00E-01 I122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H
26628-22-8 Metal compounds sodium azide 4.00E-03 I143-33-9 Cyanides sodium cyanide 1.00E-03 I148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I13718-26-8 Metal compounds sodium metavanadate 1.00E-03 H
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I7440-24-6 Metals strontium 6.00E-01 I
57-24-9 SVOCs strychnine 3.00E-04 I100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I 4.60E+02 1.00E+03
88671-89-0 Pesticides systhane 2.50E-02 I1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 1.80E-05 6.60E-08 4.00E-05 6.60E-07
34014-18-1 Pesticides tebuthiuron 7.00E-02 I3383-96-8 Pesticides temephos 2.00E-02 H5902-51-2 Pesticides terbacil 1.30E-02 I
13071-79-9 SVOCs terbufos 2.50E-05 H886-50-0 Pesticides terbutryn 1.00E-03 I
98-06-6 VOCs tert-butylbenzene 1.00E-01 X5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I 3.40E-01 3.40E+00
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 4.30E-02 4.30E-01127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 1.80E+01 9.60E+00 4.00E+01 9.60E+01
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I5216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H3689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01 3.70E+04 8.00E+04109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I 9.10E+02 2.00E+03
1314-32-5 Metal compounds thallic oxide 2.00E-05 S563-68-8 Metal compounds thallium acetate 1.00E-05 X
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X7791-12-0 Metal compounds thallium chloride 1.00E-05 X
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X12039-52-0 Metal compounds thallium selenite 1.00E-05 S
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X7440-28-0 Metals thallium, soluble salts 1.00E-05 X
28249-77-6 Pesticides thiobencarb 1.00E-02 I21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H39196-18-4 Pesticides thiofanox 3.00E-04 H23564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O
137-26-8 Pesticides thiram 1.50E-02 O7440-31-5 Metals tin 6.00E-01 H
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 2.30E+03 5.00E+03
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C 2.30E-01 2.30E+00584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 3.70E-03 2.30E-01 8.00E-03 2.30E+00
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 3.70E-03 2.30E-01 8.00E-03 2.30E+0095-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P8001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 7.80E-03 7.80E-02
Washington State Department of Ecology - CLARC Air Table (Methods B and C) - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 179 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
AirMethod BNoncancer(Eq. 750-1)
(µg/m³)
AirMethod B
Cancer(Eq. 750-2)
(µg/m³)
AirMethod CNoncancer(Eq. 750-1adjusted)(µg/m³)
AirMethod C
Cancer(Eq. 750-2adjusted)(µg/m³)
93-72-1 Herbicides tp;2,4,5- 8.00E-03 Iunavailable09 Petroleum tph, diesel range organicsunavailable10 Petroleum tph, heavy oilsunavailable11 Petroleum tph, mineral oilsunavailable25 Petroleum tph: gasoline range organics, benzene presentunavailable08 Petroleum tph: gasoline range organics, no detectable benzene
66841-25-6 Pesticides tralomethrin 7.50E-03 I2303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O
82097-50-5 Pesticides triasulfuron 1.00E-02 I615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I688-73-3 Organotins tributyltin
56-35-9 Organotins tributyltin oxide 3.00E-04 I10025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I 2.30E+03 5.00E+0376-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 9.10E-01 2.00E+00
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 2.30E+03 5.00E+0379-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 9.10E-02 1.60E-01 2.00E-01 1.60E+0079-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 9.10E-01 3.30E-01 2.00E+00 6.10E+0075-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I 3.20E+02 7.00E+0295-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I88-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 8.10E-01 8.10E+0093-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I96-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M 1.40E-01 3.00E-0196-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X 1.40E-01 3.00E-01
58138-08-2 Pesticides tridiphane 3.00E-03 I121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03 3.20E+00 7.00E+00
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 Iunavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I 2.70E+01 6.00E+01
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I 2.70E+01 6.00E+01108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I 2.70E+01 6.00E+01
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A 1.80E-02 4.00E-027440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S 4.60E-02 1.00E-011314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I 3.20E-03 3.00E-04 7.00E-03 3.00E-031929-77-7 Pesticides vernam 1.00E-03 I
50471-44-8 Pesticides vinclozolin 1.20E-03 O108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H 9.10E+01 2.00E+02
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 4.60E+01 2.80E-01 1.00E+02 2.80E+0081-81-2 Pesticides warfarin 3.00E-04 I
8012-95-1 Petroleum white mineral oil 3.00E+00 P108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S 4.60E+01 1.00E+02
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S 4.60E+01 1.00E+02106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S 4.60E+01 1.00E+02
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I 4.60E+01 1.00E+027440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I
557-21-1 Cyanides zinc cyanide 5.00E-02 I1314-84-7 Metal compounds zinc phosphide 3.00E-04 I
12122-67-7 Pesticides zineb 5.00E-02 I
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Vapor Intrusion Method B Table - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 180 of 218
CAS # Chemical NameLinks to Important Notes
click here for general VI Guidance (Implementation Memo 21)
RiskDriver forIndividualChemicals
Indoor Air Cleanup Level
Method BNoncancer
(µg/m³)
Indoor Air Cleanup
LevelMethod B
Cancer
(µg/m³)
Groundwater Screening
LevelMethod BNoncancer
(µg/L)
GroundwaterScreening
LevelMethod B
Cancer
(µg/L)
Sub-SlabSoil Gas
Screening Level
Method BNoncancer
(µg/m³)
Sub-SlabSoil Gas
Screening Level
Method BCancer
(µg/m³)
Deep Soil Gas Screening
LevelMethod BNoncancer
(µg/m³)
Deep Soil GasScreening
LevelMethod B
Cancer
(µg/m³)75-07-0 acetaldehyde Cancer 4.11E+00 1.14E+00 1.90E+03 5.30E+02 1.40E+02 3.80E+01 4.10E+02 1.10E+0275-05-8 acetonitrile Noncancer 2.74E+01 3.30E+04 9.10E+02 2.70E+03107-02-8 acrolein Noncancer 9.14E-03 2.90E+00 3.00E-01 9.10E-01107-13-1 acrylonitrile Cancer 9.14E-01 3.68E-02 3.90E+02 1.60E+01 3.00E+01 1.20E+00 9.10E+01 3.70E+00309-00-2 aldrin Cancer 5.10E-04 3.20E-01 1.70E-02 5.10E-0271-43-2 benzene IMPLEMENTATION MEMO 18 (Sect. 5.2) Cancer 1.37E+01 3.21E-01 1.00E+02 2.40E+00 4.60E+02 1.10E+01 1.40E+03 3.20E+01100-44-7 benzyl chloride Cancer 4.57E-01 5.10E-02 5.50E+01 6.20E+00 1.50E+01 1.70E+00 4.60E+01 5.10E+00111-44-4 bis(2-chloroethyl)ether Cancer 7.58E-03 2.60E+01 2.50E-01 7.60E-01108-86-1 bromobenzene Noncancer 2.74E+01 6.30E+02 9.10E+02 2.70E+0375-27-4 bromodichloromethane Cancer 6.76E-02 1.80E+00 2.30E+00 6.80E+0075-25-2 bromoform Cancer 2.27E+00 2.00E+02 7.60E+01 2.30E+0274-83-9 bromomethane Noncancer 2.29E+00 1.30E+01 7.60E+01 2.30E+02106-99-0 butadiene;1,3- Cancer 9.14E-01 8.33E-02 4.20E-01 3.80E-02 3.00E+01 2.80E+00 9.10E+01 8.30E+0075-15-0 carbon disulfide Noncancer 3.20E+02 4.00E+02 1.10E+04 3.20E+0456-23-5 carbon tetrachloride Cancer 4.57E+01 4.17E-01 6.20E+01 5.60E-01 1.50E+03 1.40E+01 4.60E+03 4.20E+01126-99-8 chloro-1,3-butadiene;2- Cancer 9.14E+00 8.33E-03 3.30E+01 3.00E-02 3.00E+02 2.80E-01 9.10E+02 8.30E-01108-90-7 chlorobenzene Noncancer 2.29E+01 2.90E+02 7.60E+02 2.30E+0375-45-6 chlorodifluoromethane Noncancer 2.29E+04 2.70E+04 7.60E+05 2.30E+0667-66-3 chloroform Cancer 4.48E+01 1.09E-01 4.90E+02 1.20E+00 1.50E+03 3.60E+00 4.50E+03 1.10E+0174-87-3 chloromethane Noncancer 4.11E+01 1.50E+02 1.40E+03 4.10E+0398-82-8 cumene Noncancer 1.83E+02 7.20E+02 6.10E+03 1.80E+0495-50-1 dichlorobenzene;1,2- Noncancer 9.14E+01 2.60E+03 3.00E+03 9.10E+03106-46-7 dichlorobenzene;1,4- Cancer 3.66E+02 2.27E-01 7.90E+03 4.90E+00 1.20E+04 7.60E+00 3.70E+04 2.30E+0175-71-8 dichlorodifluoromethane Noncancer 4.57E+01 5.60E+00 1.50E+03 4.60E+0375-34-3 dichloroethane;1,1- Cancer 1.56E+00 1.10E+01 5.20E+01 1.60E+02107-06-2 dichloroethane;1,2- IMPLEMENTATION MEMO 18 (Sect. 5.2) Cancer 3.20E+00 9.62E-02 1.40E+02 4.20E+00 1.10E+02 3.20E+00 3.20E+02 9.60E+0075-35-4 dichloroethylene;1,1- Noncancer 9.14E+01 1.30E+02 3.00E+03 9.10E+0378-87-5 dichloropropane;1,2- Cancer 1.83E+00 6.76E-01 2.80E+01 1.00E+01 6.10E+01 2.30E+01 1.80E+02 6.80E+01542-75-6 dichloropropene;1,3- Cancer 9.14E+00 6.25E-01 2.30E+01 1.60E+00 3.00E+02 2.10E+01 9.10E+02 6.30E+0175-00-3 ethyl chloride Noncancer 4.57E+03 1.80E+04 1.50E+05 4.60E+05100-41-4 ethylbenzene Noncancer 4.57E+02 2.80E+03 1.50E+04 4.60E+04106-93-4 ethylene dibromide (EDB) Cancer 4.11E+00 4.17E-03 2.70E+02 2.70E-01 1.40E+02 1.40E-01 4.10E+02 4.20E-0175-21-8 ethylene oxide Cancer 1.37E+01 2.19E-04 8.90E+02 1.40E-02 4.60E+02 7.30E-03 1.40E+03 2.20E-0287-68-3 hexachlorobutadiene Cancer 1.14E-01 8.10E-01 3.80E+00 1.10E+0167-72-1 hexachloroethane Cancer 1.37E+01 2.27E-01 1.90E+02 3.10E+00 4.60E+02 7.60E+00 1.40E+03 2.30E+01110-54-3 hexane;n- Noncancer 3.20E+02 7.80E+00 1.10E+04 3.20E+0474-90-8 hydrogen cyanide Noncancer 3.66E-01 1.10E+02 1.20E+01 3.70E+017439-97-6 mercury Noncancer 1.37E-01 8.30E-01 4.60E+00 1.40E+01126-98-7 methacrylonitrile Noncancer 1.37E+01 2.40E+03 4.60E+02 1.40E+0378-93-3 methyl ethyl ketone Noncancer 2.29E+03 1.70E+06 7.60E+04 2.30E+05108-10-1 methyl isobutyl ketone Noncancer 1.37E+03 4.70E+05 4.60E+04 1.40E+0580-62-6 methyl methacrylate Noncancer 3.20E+02 4.60E+04 1.10E+04 3.20E+041634-04-4 methyl tert-butyl ether Cancer 1.37E+03 9.62E+00 8.60E+04 6.00E+02 4.60E+04 3.20E+02 1.40E+05 9.60E+0275-09-2 methylene chloride Cancer 2.74E+02 6.58E+01 4.80E+03 1.20E+03 9.10E+03 2.20E+03 2.70E+04 6.60E+0391-20-3 naphthalene IMPLEMENTATION MEMO 18 (Sect. 5.2) Cancer 1.37E+00 7.35E-02 1.70E+02 8.90E+00 4.60E+01 2.50E+00 1.40E+02 7.40E+0098-95-3 nitrobenzene Cancer 4.11E+00 6.25E-02 1.00E+04 1.60E+02 1.40E+02 2.10E+00 4.10E+02 6.30E+0079-46-9 nitropropane;2- Cancer 9.14E+00 9.26E-04 3.50E+03 3.60E-01 3.00E+02 3.10E-02 9.10E+02 9.30E-02100-42-5 styrene Noncancer 4.57E+02 8.20E+03 1.50E+04 4.60E+04630-20-6 tetrachloroethane;1,1,1,2- Cancer 3.38E-01 7.40E+00 1.10E+01 3.40E+0179-34-5 tetrachloroethane;1,1,2,2- Cancer 4.31E-02 6.20E+00 1.40E+00 4.30E+00127-18-4 tetrachloroethylene Cancer 1.83E+01 9.62E+00 4.60E+01 2.40E+01 6.10E+02 3.20E+02 1.80E+03 9.60E+02
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Vapor Intrusion Method B Table - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 181 of 218
CAS # Chemical NameLinks to Important Notes
click here for general VI Guidance (Implementation Memo 21)
RiskDriver forIndividualChemicals
Indoor Air Cleanup Level
Method BNoncancer
(µg/m³)
Indoor Air Cleanup
LevelMethod B
Cancer
(µg/m³)
Groundwater Screening
LevelMethod BNoncancer
(µg/L)
GroundwaterScreening
LevelMethod B
Cancer
(µg/L)
Sub-SlabSoil Gas
Screening Level
Method BNoncancer
(µg/m³)
Sub-SlabSoil Gas
Screening Level
Method BCancer
(µg/m³)
Deep Soil Gas Screening
LevelMethod BNoncancer
(µg/m³)
Deep Soil GasScreening
LevelMethod B
Cancer
(µg/m³)108-88-3 toluene Noncancer 2.29E+03 1.50E+04 7.60E+04 2.30E+0576-13-1 trichloro-1,2,2-trifluoroethane;1,1,2- Noncancer 2.29E+03 1.80E+02 7.60E+04 2.30E+05120-82-1 trichlorobenzene;1,2,4- Noncancer 9.14E-01 3.90E+01 3.00E+01 9.10E+0171-55-6 trichloroethane;1,1,1- Noncancer 2.29E+03 5.50E+03 7.60E+04 2.30E+0579-00-5 trichloroethane;1,1,2- Noncancer 9.14E-02 1.56E-01 4.60E+00 7.90E+00 3.00E+00 5.20E+00 9.10E+00 1.60E+0179-01-6 trichloroethylene Cancer 9.14E-01 3.34E-01 3.80E+00 1.40E+00 3.00E+01 1.10E+01 9.10E+01 3.30E+0175-69-4 trichlorofluoromethane Noncancer 3.20E+02 1.20E+02 1.10E+04 3.20E+0495-63-6 trimethylbenzene;1,2,4- Noncancer 2.74E+01 2.40E+02 9.10E+02 2.70E+03108-05-4 vinyl acetate Noncancer 9.14E+01 7.80E+03 3.00E+03 9.10E+0375-01-4 vinyl chloride Cancer 4.57E+01 2.84E-01 5.70E+01 3.50E-01 1.50E+03 9.50E+00 4.60E+03 2.80E+011330-20-7 xylenes IMPLEMENTATION MEMO 18 (Sect. 5.2) Noncancer 4.57E+01 3.30E+02 1.50E+03 4.60E+03None TPH - Generic cleanup level IMPLEMENTATION MEMO 18 (Sect. A.2) 1.40E+02 4.70E+03 1.40E+04None TPH - Site-specific IMPLEMENTATION MEMO 18 (Sect. B.1)
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Vapor Intrusion Method C Table - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 182 of 218
CAS # Chemical NameLinks to Important Notes
click here for general VI Guidance (Implementation Memo 21)
RiskDriver for IndividualChemicals
Indoor Air Cleanup Level
Method CNoncancer
(µg/m³)
Indoor Air Cleanup
LevelMethod C
Cancer
(µg/m³)
Groundwater Screening
LevelMethod CNoncancer
(µg/L)
GroundwaterScreening
LevelMethod C
Cancer
(µg/L)
Sub-SlabSoil Gas
Screening Level
Method CNoncancer
(µg/m³)
Sub-SlabSoil Gas
Screening Level
Method CCancer
(µg/m³)
Deep Soil Gas Screening
LevelMethod CNoncancer
(µg/m³)
Deep Soil GasScreening
LevelMethod C
Cancer
(µg/m³)75-07-0 acetaldehyde Noncancer 9.00E+00 1.14E+01 4.20E+03 5.30E+03 3.00E+02 3.80E+02 9.00E+02 1.10E+0375-05-8 acetonitrile Noncancer 6.00E+01 7.20E+04 2.00E+03 6.00E+03107-02-8 acrolein Noncancer 2.00E-02 6.40E+00 6.70E-01 2.00E+00107-13-1 acrylonitrile Cancer 2.00E+00 3.68E-01 8.50E+02 1.60E+02 6.70E+01 1.20E+01 2.00E+02 3.70E+01309-00-2 aldrin Cancer 5.10E-03 3.20E+00 1.70E-01 5.10E-0171-43-2 benzene IMPLEMENTATION MEMO 18 (Sect. 5.2) Cancer 3.00E+01 3.21E+00 2.30E+02 2.40E+01 1.00E+03 1.10E+02 3.00E+03 3.20E+02100-44-7 benzyl chloride Cancer 1.00E+00 5.10E-01 1.20E+02 6.20E+01 3.30E+01 1.70E+01 1.00E+02 5.10E+01111-44-4 bis(2-chloroethyl)ether Cancer 7.58E-02 2.60E+02 2.50E+00 7.60E+00108-86-1 bromobenzene Noncancer 6.00E+01 1.40E+03 2.00E+03 6.00E+0375-27-4 bromodichloromethane Cancer 6.76E-01 1.80E+01 2.30E+01 6.80E+0175-25-2 bromoform Cancer 2.27E+01 2.00E+03 7.60E+02 2.30E+0374-83-9 bromomethane Noncancer 5.00E+00 2.80E+01 1.70E+02 5.00E+02106-99-0 butadiene;1,3- Cancer 2.00E+00 8.33E-01 9.20E-01 3.80E-01 6.70E+01 2.80E+01 2.00E+02 8.30E+0175-15-0 carbon disulfide Noncancer 7.00E+02 8.70E+02 2.30E+04 7.00E+0456-23-5 carbon tetrachloride Cancer 1.00E+02 4.17E+00 1.30E+02 5.60E+00 3.30E+03 1.40E+02 1.00E+04 4.20E+02126-99-8 chloro-1,3-butadiene;2- Cancer 2.00E+01 8.33E-02 7.30E+01 3.00E-01 6.70E+02 2.80E+00 2.00E+03 8.30E+00108-90-7 chlorobenzene Noncancer 5.00E+01 6.40E+02 1.70E+03 5.00E+0375-45-6 chlorodifluoromethane Noncancer 5.00E+04 5.80E+04 1.70E+06 5.00E+0667-66-3 chloroform Cancer 9.80E+01 1.09E+00 1.10E+03 1.20E+01 3.30E+03 3.60E+01 9.80E+03 1.10E+0274-87-3 chloromethane Noncancer 9.00E+01 3.40E+02 3.00E+03 9.00E+0398-82-8 cumene Noncancer 4.00E+02 1.60E+03 1.30E+04 4.00E+0495-50-1 dichlorobenzene;1,2- Noncancer 2.00E+02 5.60E+03 6.70E+03 2.00E+04106-46-7 dichlorobenzene;1,4- Cancer 8.00E+02 2.27E+00 1.70E+04 4.90E+01 2.70E+04 7.60E+01 8.00E+04 2.30E+0275-71-8 dichlorodifluoromethane Noncancer 1.00E+02 1.20E+01 3.30E+03 1.00E+0475-34-3 dichloroethane;1,1- Cancer 1.56E+01 1.10E+02 5.20E+02 1.60E+03107-06-2 dichloroethane;1,2- IMPLEMENTATION MEMO 18 (Sect. 5.2) Cancer 7.00E+00 9.62E-01 3.10E+02 4.20E+01 2.30E+02 3.20E+01 7.00E+02 9.60E+0175-35-4 dichloroethylene;1,1- Noncancer 2.00E+02 2.80E+02 6.70E+03 2.00E+0478-87-5 dichloropropane;1,2- Noncancer 4.00E+00 6.76E+00 6.20E+01 1.00E+02 1.30E+02 2.30E+02 4.00E+02 6.80E+02542-75-6 dichloropropene;1,3- Cancer 2.00E+01 6.25E+00 5.10E+01 1.60E+01 6.70E+02 2.10E+02 2.00E+03 6.30E+0275-00-3 ethyl chloride Noncancer 1.00E+04 4.00E+04 3.30E+05 1.00E+06100-41-4 ethylbenzene Noncancer 1.00E+03 6.20E+03 3.30E+04 1.00E+05106-93-4 ethylene dibromide (EDB) Cancer 9.00E+00 4.17E-02 5.90E+02 2.70E+00 3.00E+02 1.40E+00 9.00E+02 4.20E+0075-21-8 ethylene oxide Cancer 3.00E+01 8.33E-03 2.00E+03 5.40E-01 1.00E+03 2.80E-01 3.00E+03 8.30E-0187-68-3 hexachlorobutadiene Cancer 1.14E+00 8.10E+00 3.80E+01 1.10E+0267-72-1 hexachloroethane Cancer 3.00E+01 2.27E+00 4.10E+02 3.10E+01 1.00E+03 7.60E+01 3.00E+03 2.30E+02110-54-3 hexane;n- Noncancer 7.00E+02 1.70E+01 2.30E+04 7.00E+0474-90-8 hydrogen cyanide Noncancer 8.00E-01 2.30E+02 2.70E+01 8.00E+017439-97-6 mercury Noncancer 3.00E-01 1.80E+00 1.00E+01 3.00E+01126-98-7 methacrylonitrile Noncancer 3.00E+01 5.30E+03 1.00E+03 3.00E+0378-93-3 methyl ethyl ketone Noncancer 5.00E+03 3.80E+06 1.70E+05 5.00E+05108-10-1 methyl isobutyl ketone Noncancer 3.00E+03 1.00E+06 1.00E+05 3.00E+0580-62-6 methyl methacrylate Noncancer 7.00E+02 1.00E+05 2.30E+04 7.00E+041634-04-4 methyl tert-butyl ether Cancer 3.00E+03 9.62E+01 1.90E+05 6.00E+03 1.00E+05 3.20E+03 3.00E+05 9.60E+0375-09-2 methylene chloride Noncancer 6.00E+02 2.50E+03 1.10E+04 4.40E+04 2.00E+04 8.30E+04 6.00E+04 2.50E+0591-20-3 naphthalene IMPLEMENTATION MEMO 18 (Sect. 5.2) Cancer 3.00E+00 7.35E-01 3.60E+02 8.90E+01 1.00E+02 2.50E+01 3.00E+02 7.40E+0198-95-3 nitrobenzene Cancer 9.00E+00 6.25E-01 2.30E+04 1.60E+03 3.00E+02 2.10E+01 9.00E+02 6.30E+0179-46-9 nitropropane;2- Cancer 2.00E+01 9.26E-03 7.70E+03 3.60E+00 6.70E+02 3.10E-01 2.00E+03 9.30E-01100-42-5 styrene Noncancer 1.00E+03 1.80E+04 3.30E+04 1.00E+05630-20-6 tetrachloroethane;1,1,1,2- Cancer 3.38E+00 7.40E+01 1.10E+02 3.40E+0279-34-5 tetrachloroethane;1,1,2,2- Cancer 4.31E-01 6.20E+01 1.40E+01 4.30E+01127-18-4 tetrachloroethylene Noncancer 4.00E+01 9.62E+01 1.00E+02 2.40E+02 1.30E+03 3.20E+03 4.00E+03 9.60E+03
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Vapor Intrusion Method C Table - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 183 of 218
CAS # Chemical NameLinks to Important Notes
click here for general VI Guidance (Implementation Memo 21)
RiskDriver for IndividualChemicals
Indoor Air Cleanup Level
Method CNoncancer
(µg/m³)
Indoor Air Cleanup
LevelMethod C
Cancer
(µg/m³)
Groundwater Screening
LevelMethod CNoncancer
(µg/L)
GroundwaterScreening
LevelMethod C
Cancer
(µg/L)
Sub-SlabSoil Gas
Screening Level
Method CNoncancer
(µg/m³)
Sub-SlabSoil Gas
Screening Level
Method CCancer
(µg/m³)
Deep Soil Gas Screening
LevelMethod CNoncancer
(µg/m³)
Deep Soil GasScreening
LevelMethod C
Cancer
(µg/m³)108-88-3 toluene Noncancer 5.00E+03 3.40E+04 1.70E+05 5.00E+0576-13-1 trichloro-1,2,2-trifluoroethane;1,1,2- Noncancer 5.00E+03 4.00E+02 1.70E+05 5.00E+05120-82-1 trichlorobenzene;1,2,4- Noncancer 2.00E+00 8.40E+01 6.70E+01 2.00E+0271-55-6 trichloroethane;1,1,1- Noncancer 5.00E+03 1.20E+04 1.70E+05 5.00E+0579-00-5 trichloroethane;1,1,2- Noncancer 2.00E-01 1.56E+00 1.00E+01 7.90E+01 6.70E+00 5.20E+01 2.00E+01 1.60E+0279-01-6 trichloroethylene Noncancer 2.00E+00 6.10E+00 8.40E+00 2.60E+01 6.70E+01 2.00E+02 2.00E+02 6.10E+0275-69-4 trichlorofluoromethane Noncancer 7.00E+02 2.60E+02 2.30E+04 7.00E+0495-63-6 trimethylbenzene;1,2,4- Noncancer 6.00E+01 5.20E+02 2.00E+03 6.00E+03108-05-4 vinyl acetate Noncancer 2.00E+02 1.70E+04 6.70E+03 2.00E+0475-01-4 vinyl chloride Cancer 1.00E+02 2.84E+00 1.20E+02 3.50E+00 3.30E+03 9.50E+01 1.00E+04 2.80E+021330-20-7 xylenes IMPLEMENTATION MEMO 18 (Sect. 5.2) Noncancer 1.00E+02 7.20E+02 3.30E+03 1.00E+04None TPH - Generic cleanup level IMPLEMENTATION MEMO 18 (Sect. A.2) 1.40E+02 4.70E+03 1.40E+04None TPH - Site-specific IMPLEMENTATION MEMO 18 (Sect. B.1)
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 184 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
83-32-9 PAHs acenaphthene 6.00E-02 I 4.24E+00 2.42E+02 6.36E-03 2.11E-03 1 4.90E+03 4.90E+00 130560-19-1 Pesticides acephate 1.20E-03 O 1 1
75-07-0 VOCs acetaldehyde 9.00E-03 I 2.57E-03 2.20E-06 I 7.70E-03 2.15E-03 2 134256-82-1 Pesticides acetochlor 2.00E-02 I 1 1
67-64-1 VOCs acetone 3.10E+01 A 8.86E+00 9.00E-01 I 1.00E+06 1.59E-03 9.68E-04 2 5.75E-01 5.75E-04 175-86-5 VOCs acetone cyanohydrin 2.00E-03 X 5.71E-04 2 175-05-8 VOCs acetonitrile 6.00E-02 I 1.71E-02 8.37E-04 2 198-86-2 SVOCs acetophenone 1.00E-01 I 1.61E-04 2 1
62476-59-9 Herbicides acifluorfen, sodium 1.30E-02 I 2 1107-02-8 VOCs acrolein 2.00E-05 I 5.71E-06 5.00E-04 I 3.11E-03 2 1
79-06-1 VOCs acrylamide 6.00E-03 I 1.71E-03 1.00E-04 I-M 3.50E-01 2.00E-03 I 5.00E-01 I-M 2 179-10-7 VOCs acrylic acid 1.00E-03 I 2.86E-04 5.00E-01 I 2 1
107-13-1 VOCs acrylonitrile 2.00E-03 I 5.71E-04 6.80E-05 I 2.38E-01 4.00E-02 A 5.40E-01 I 3.00E+01 2.34E-03 2 115972-60-8 Pesticides alachlor 1.00E-02 I 5.60E-02 C 1 1
1596-84-5 Pesticides alar 5.10E-06 C 1.79E-02 1.50E-01 I 1.80E-02 C 1 1116-06-3 Pesticides (Carbamate) aldicarb 1.00E-03 I 1 1
1646-88-4 Pesticides (Carbamate) aldicarb sulfone 1.00E-03 I 1 1309-00-2 Pesticides aldrin 4.90E-03 I 1.72E+01 3.00E-05 I 1.70E+01 I 1.80E-01 4.67E+03 6.97E-03 1.60E-03 2 4.87E+04 4.87E+01 1
74223-64-6 Pesticides ally 2.50E-01 I 1 1107-18-6 VOCs allyl alcohol 1.00E-04 X 2.86E-05 5.00E-03 I 2 1107-05-1 VOCs allyl chloride 1.00E-03 I 2.86E-04 6.00E-06 C 2.10E-02 2.10E-02 C 2 1
7429-90-5 Metals aluminum 5.00E-03 P 1.43E-03 1.00E+00 P 0.00E+00 0.00E+00 1 120859-73-8 Metal compounds aluminum phosphide 4.00E-04 I 1 167485-29-4 Pesticides amdro 1.70E-02 O 1 1
834-12-8 Pesticides ametryn 9.00E-03 I 1 1591-27-5 Phenols aminophenol;m- 8.00E-02 P 1 1
33089-61-1 Pesticides amitraz 2.50E-03 I 1 17664-41-7 Nutrients AMMONIA AMMONIA NOTES 5.00E-01 I 1.43E-01 2 17790-98-9 Perchlorates ammonium perchlorate 7.00E-04 I 1 17773-06-0 Pesticides ammonium sulfamate 2.00E-01 I 1 1
62-53-3 SVOCs aniline 1.00E-03 I 2.86E-04 1.60E-06 C 5.60E-03 7.00E-03 P 5.70E-03 I 2 1120-12-7 PAHs anthracene 3.00E-01 I 4.34E-02 3.00E+01 2.67E-03 7.56E-04 1 2.35E+04 2.35E+01 1
7440-36-0 Metals antimony 3.00E-04 A 8.57E-05 4.00E-04 I 1.00E+00 0.00E+00 0.00E+00 1 4.50E+01 4.50E+01 11314-60-9 Metal compounds antimony pentoxide 5.00E-04 H 1 1
28300-74-5 Metal compounds antimony potassium tartrate 9.00E-04 H 1 11332-81-6 Metal compounds antimony tetroxide 4.00E-04 H 1 11309-64-4 Metal compounds antimony trioxide 2.00E-04 I 5.71E-05 1 1
74115-24-5 Pesticides apollo 1.30E-02 I 1 1140-57-8 SVOCs aramite 7.10E-06 I 2.49E-02 5.00E-02 H 2.50E-02 I 1 1
12674-11-2 PCBs aroclor 1016 2.00E-05 S 7.00E-02 7.00E-05 I 7.00E-02 S 3.12E+04 1 1.07E+05 1.07E+02 111097-69-1 PCBs aroclor 1254 5.70E-04 S 2.00E+00 2.00E-05 I 2.00E+00 S 3.12E+04 1 8.10E+05 8.10E+02 111096-82-5 PCBs aroclor 1260 5.70E-04 S 2.00E+00 2.00E+00 S 1 8.22E+05 8.22E+02 1
7440-38-2 Metals arsenic, inorganic 1.50E-05 C 4.29E-06 4.30E-03 I 1.51E+01 3.00E-04 I 1.50E+00 I 4.40E+01 0.00E+00 0.00E+00 1 2.90E+01 2.90E+01 17784-42-1 Gases arsine 5.00E-05 I 1.43E-05 3.50E-06 C 2 11332-21-4 Fibers ASBESTOS ASBESTOS NOTE 2.30E-01 I 1 1
76578-14-8 Pesticides assure 9.00E-03 I 1 13337-71-1 Pesticides asulam 3.60E-02 O 1 11912-24-9 Pesticides atrazine 3.50E-02 I 2.30E-01 C 1 1
65195-55-3 Pesticides avermectin B1 4.00E-04 I 1 1103-33-3 Pesticides azobenzene 3.10E-05 I 1.09E-01 1.10E-01 I 1 1
7440-39-3 Metals barium and compounds 5.00E-04 H 1.43E-04 2.00E-01 I 0.00E+00 0.00E+00 1 4.10E+01 4.10E+01 1114-26-1 Pesticides baygon 4.00E-03 I 1 1
43121-43-3 Pesticides bayleton 3.40E-02 O 1 168359-37-5 Pesticides baythroid 2.50E-02 I 1 1
1861-40-1 Pesticides benefin 5.00E-03 O 2 117804-35-2 Pesticides benomyl 5.00E-02 I 1 125057-89-0 Herbicides bentazon 3.00E-02 I 1 1
100-52-7 SVOCs benzaldehyde 1.00E-01 I 4.00E-03 P 3.72E-04 2 171-43-2 VOCs BENZENE 3.00E-02 I 8.57E-03 7.80E-06 I 2.73E-02 4.00E-03 I 5.50E-02 I 1.75E+03 5.20E+00 2.28E-01 1.33E-01 2 6.17E+01 6.17E-02 1
108-98-5 SVOCs benzenethiol 1.00E-03 P 2 192-87-5 SVOCs benzidine 6.70E-02 I 2.35E+02 3.00E-03 I 2.30E+02 I 8.75E+01 1 156-55-3 cPAHs BENZO[a]ANTHRACENE PAH NOTES 9.40E-03 3.00E+01 1.37E-04 2.79E-05 1 3.58E+05 3.58E+02 150-32-8 cPAHs BENZO[a]PYRENE PAH NOTES 2.00E-06 I 5.71E-07 6.00E-04 I-M 2.10E+00 3.00E-04 I 1.00E+00 I-M 1.62E-03 3.00E+01 4.63E-05 6.39E-06 1 9.69E+05 9.69E+02 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 185 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
205-99-2 cPAHs BENZO[b]FLUORANTHENE PAH NOTES 1.50E-03 3.00E+01 4.55E-03 7.73E-04 1 1.23E+06 1.23E+03 1207-08-9 cPAHs BENZO[k]FLUORANTHENE PAH NOTES 8.00E-04 3.00E+01 3.40E-05 5.13E-06 1 1.23E+06 1.23E+03 1
65-85-0 SVOCs BENZOIC ACID pH-DEPENDENT 4.00E+00 I 3.50E+03 6.31E-05 4.88E-06 1 6.00E-01 6.00E-04 198-07-7 VOCs benzotrichloride 1.30E+01 I 2 1
100-51-6 SVOCs benzyl alcohol 1.00E-01 P 2 1100-44-7 VOCs benzyl chloride 1.00E-03 P 2.86E-04 4.90E-05 C 1.72E-01 2.00E-03 P 1.70E-01 I 8.25E-03 2 1
7440-41-7 Metals beryllium 2.00E-05 I 5.71E-06 2.40E-03 I 8.40E+00 2.00E-03 I 1.90E+01 0.00E+00 0.00E+00 1 7.90E+02 7.90E+02 191-58-7 PAHs beta-chloronaphthalene 8.00E-02 I 2.02E+02 2 1
141-66-2 Pesticides bidrin 3.00E-05 O 1 182657-04-3 Pesticides biphenthrin 1.50E-02 I 1 1
92-52-4 PAHs biphenyl;1,1- 4.00E-04 X 1.14E-04 5.00E-01 I 8.00E-03 I 4.73E-03 2 1108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether 1.00E-05 H 3.50E-02 4.00E-02 I 7.00E-02 H 2.47E+00 2 1111-44-4 SVOCs bis(2-chloroethyl)ether 3.30E-04 I 1.16E+00 1.10E+00 I 1.72E+04 6.90E+00 7.38E-04 2.93E-04 2 7.59E+01 7.59E-02 1117-81-7 Phthalates bis(2-ethylhexyl) phthalate 2.40E-06 C 8.40E-03 2.00E-02 I 1.40E-02 I 3.40E-01 1.30E+02 4.18E-06 6.56E-07 1 1.11E+05 1.11E+02 1542-88-1 VOCs bis(chloromethyl)ether 6.20E-02 I 2.17E+02 2.20E+02 I 2 1
80-05-7 Phenols bisphenol a 5.00E-02 I 1 17440-42-8 Metals boron 2.00E-02 H 5.71E-03 2.00E-01 I 0.00E+00 0.00E+00 1 1
15541-45-4 Pesticides bromate 4.00E-03 I 7.00E-01 I 1 179-08-3 SVOCs bromoacetic acid 1 1
108-86-1 VOCs bromobenzene 6.00E-02 I 1.71E-02 8.00E-03 I 4.46E+02 1.01E-01 4.33E-02 2 2.34E+02 2.34E-01 175-27-4 VOCs bromodichloromethane TTHM NOTES 3.70E-05 C 1.30E-01 2.00E-02 I 6.20E-02 I 6.74E+03 3.75E+00 6.56E-02 3.69E-02 2 5.50E+01 5.50E-02 1
593-60-2 VOCs bromoethene 3.00E-03 I 8.57E-04 3.20E-05 H 1.12E-01 2 175-25-2 VOCs bromoform TTHM NOTES 1.10E-06 I 3.85E-03 2.00E-02 I 7.90E-03 I 3.10E+03 3.75E+00 2.19E-02 1.16E-02 2 1.26E+02 1.26E-01 174-83-9 VOCs bromomethane 5.00E-03 I 1.43E-03 1.40E-03 I 1.52E+04 3.75E+00 2.56E-01 1.78E-01 2 9.00E+00 9.00E-03 1
2104-96-3 Pesticides bromophos 5.00E-03 H 1 11689-84-5 Pesticides bromoxynil 1.50E-02 O 1.00E-01 O 1 11689-99-2 Pesticides bromoxynil octanoate 1.50E-02 O 1.00E-01 O 1 1
106-99-0 VOCs butadiene;1,3- 2.00E-03 I 5.71E-04 3.00E-05 I 1.05E-01 6.00E-01 C 2.17E+00 2 171-36-3 VOCs butanol;n- 1.00E-01 I 7.40E+04 3.61E-04 1.55E-04 2 6.92E+00 6.92E-03 185-68-7 Phthalates butyl benzyl phthalate 2.00E-01 I 1.90E-03 P 2.69E+00 4.14E+02 5.17E-05 1.11E-05 1 1.37E+04 1.37E+01 1
2008-41-5 Pesticides butylate 5.00E-02 I 2 185-70-1 Phthalates butylphthalyl butylglycolate 1.00E+00 I 1 194-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- 4.40E-03 O 1 175-60-5 Pesticides cacodylic acid 2.00E-02 A 1 1
7440-43-9 Metals CADMIUM (POTABLE GROUNDWATER & SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 5.00E-04 I 6.40E+01 0.00E+00 0.00E+00 1 6.70E+00 6.70E+00 17440-43-9a Metals CADMIUM (SOIL & NONPOTABLE SURFACE WATER) CADMIUM NOTES 1.00E-05 A 2.86E-06 1.80E-03 I 6.30E+00 1.00E-03 I 6.40E+01 0.00E+00 0.00E+00 1 1
592-01-8 Cyanides calcium cyanide 1.00E-03 I 1 1105-60-2 SVOCs caprolactam 2.20E-03 C 6.29E-04 5.00E-01 I 1 1
2425-06-1 Pesticides captafol 4.30E-05 C 1.51E-01 2.00E-03 I 1.50E-01 C 1 1133-06-2 Pesticides captan 6.60E-07 C 2.31E-03 1.30E-01 I 2.30E-03 C 1 1
63-25-2 Pesticides (Carbamate) carbaryl 1.00E-01 I 1 11563-66-2 Pesticides (Carbamate) carbofuran 5.00E-03 I 1 1
75-15-0 VOCs carbon disulfide 7.00E-01 I 2.00E-01 1.00E-01 I 1.19E+03 1.24E+00 8.03E-01 2 4.57E+01 4.57E-02 156-23-5 VOCs carbon tetrachloride 1.00E-01 I 2.86E-02 6.00E-06 I 2.10E-02 4.00E-03 I 7.00E-02 I 7.93E+02 1.88E+01 1.25E+00 7.42E-01 2 1.52E+02 1.52E-01 1
55285-14-8 Pesticides carbosulfan 1.00E-02 I 1 15234-68-4 Pesticides carboxin 1.00E-01 I 1 11306-38-3 Metals cerium oxide and cerium compounds 9.00E-04 I 2.57E-04 1 1
302-17-0 VOCs chloral hydrate 1.00E-01 I 2 1133-90-4 Herbicides chloramben 1.50E-02 I 1 1118-75-2 Pesticides chloranil 4.00E-01 H 1 1
12789-03-6 Pesticides chlordane 7.00E-04 I 2.00E-04 1.00E-04 I 3.50E-01 5.00E-04 I 3.50E-01 I 5.60E-02 1.41E+04 1.99E-03 5.15E-04 1 5.13E+04 5.13E+01 1143-50-0 Pesticides chlordecone (kepone) 4.60E-03 C 1.61E+01 3.00E-04 I 1.00E+01 I 1 1
16887-00-6 Nutrients chloride 1 190982-32-4 Pesticides chlorimuron-ethyl 9.00E-02 O 1 1
7782-50-5 Nutrients chlorine MCL FOR DISINFECTANTS 1.50E-04 A 4.29E-05 1.00E-01 I 2 1506-77-4 Cyanides chlorine cyanide 5.00E-02 I 2 1
10049-04-4 VOCs chlorine dioxide MCL FOR DISINFECTANTS 2.00E-04 I 5.71E-05 3.00E-02 I 2 17758-19-2 Nutrients chlorite 3.00E-02 I 1 1
75-68-3 VOCs chloro-1,1-difluoroethane;1- 5.00E+01 I 1.43E+01 2 1126-99-8 VOCs chloro-1,3-butadiene;2- 2.00E-02 I 5.71E-03 3.00E-04 I 1.05E+00 2.00E-02 H 2.75E-01 2 1
3165-93-3 SVOCs chloro-2-methylaniline hydrochloride;4- 4.60E-01 H 1 195-69-2 SVOCs chloro-2-methylaniline;4- 7.70E-05 C 2.70E-01 3.00E-03 X 1.00E-01 P 1 179-11-8 SVOCs chloroacetic acid 2.00E-03 H 1 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 186 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
532-27-4 SVOCs chloroacetophenone;2- 3.00E-05 I 8.57E-06 1 1106-47-8 SVOCs chloroaniline;p- 4.00E-03 I 2.00E-01 P 5.30E+03 1.36E-05 4.85E-06 2 6.61E+01 6.61E-02 1108-90-7 VOCs chlorobenzene 5.00E-02 P 1.43E-02 2.00E-02 I 4.72E+02 1.03E+01 1.52E-01 7.87E-02 2 2.24E+02 2.24E-01 1510-15-6 Pesticides chlorobenzilate 3.10E-05 C 1.09E-01 2.00E-02 I 1.10E-01 C 1 1
74-11-3 Pesticides chlorobenzoic acid;p- 3.00E-02 X 1 198-56-6 VOCs chlorobenzotrifluoride;4- 3.00E-01 P 8.57E-02 3.00E-03 P 2 1
109-69-3 VOCs chlorobutane;1- 4.00E-02 P 4.06E-01 2 159-50-7 Phenols chlorocresol 1.00E-01 A 1 175-45-6 VOCs chlorodifluoromethane 5.00E+01 I 1.43E+01 8.61E-01 2 167-66-3 VOCs chloroform TTHM NOTES 9.80E-02 A 2.80E-02 2.30E-05 I 8.05E-02 1.00E-02 I 3.10E-02 C 7.92E+03 3.75E+00 1.50E-01 9.15E-02 2 5.25E+01 5.25E-02 174-87-3 VOCs chloromethane 9.00E-02 I 2.57E-02 3.75E+00 2.68E-01 2 6.00E+00 6.00E-03 1
107-30-2 VOCs chloromethyl methyl ether 6.90E-04 C 2.42E+00 2.40E+00 C 2 188-73-3 Pesticides chloronitrobenzene;o- 1.00E-05 X 2.86E-06 3.00E-03 P 3.00E-01 P 1 1
100-00-5 Pesticides chloronitrobenzene;p- 2.00E-03 P 5.71E-04 7.00E-04 P 6.00E-02 P 2 195-57-8 Phenols CHLOROPHENOL;2- pH-DEPENDENT 5.00E-03 I 2.20E+04 1.34E+02 1.60E-02 7.25E-03 2 3.88E+02 3.88E-01 1
1897-45-6 Pesticides chlorothalonil 1.50E-02 I 1.70E-02 C 1 195-49-8 VOCs chlorotoluene;o- 2.00E-02 I 2 1
101-21-3 Pesticides chlorpropham 5.00E-02 O 1 12921-88-2 Pesticides chlorpyrifos 1.00E-03 A 1 15598-13-0 Pesticides chlorpyrifos-methyl 1.00E-02 H 1 1
64902-72-3 Pesticides chlorsulfuron 5.00E-02 O 1 160238-56-4 Pesticides chlorthiophos 8.00E-04 H 1 1
7440-47-3 Metals CHROMIUM (TOTAL) CHROMIUM NOTES 1 116065-83-1 Metals CHROMIUM (III) CHROMIUM NOTES 1.50E+00 I 1.60E+01 0.00E+00 0.00E+00 1 1.00E+03 1.00E+03 118540-29-9 Metals CHROMIUM (VI) CHROMIUM NOTES 1.00E-04 I 2.86E-05 8.40E-02 S 2.94E+02 3.00E-03 I 1.60E+01 0.00E+00 0.00E+00 1 1.90E+01 1.90E+01 1
218-01-9 cPAHs CHRYSENE PAH NOTES 1.60E-03 3.00E+01 3.88E-03 7.13E-04 1 3.98E+05 3.98E+02 17440-48-4 Metals Cobalt 6.00E-06 P 1.71E-06 9.00E-03 P 3.15E+01 3.00E-04 P 0.00E+00 0.00E+00 1 4.50E+01 4.50E+01 1
E649830 VOCs coke oven emissions 6.20E-04 I 2.17E+00 2 17440-50-8 Metals COPPER HARDNESS - DEPENDENT 4.00E-02 H 3.60E+01 0.00E+00 0.00E+00 1 2.20E+01 2.20E+01 1
544-92-3 Cyanides copper cyanide 5.00E-03 I 1 1108-39-4 Phenols cresol;m- 6.00E-01 C 1.71E-01 5.00E-02 I 2 1
95-48-7 Phenols cresol;o- 6.00E-01 C 1.71E-01 5.00E-02 I 2.60E+04 4.92E-05 1.95E-05 2 9.12E+01 9.12E-02 1106-44-5 Phenols cresol;p- 6.00E-01 C 1.71E-01 1.00E-01 A 2 1123-73-9 VOCs crotonaldehyde 1.00E-03 P 1.90E+00 H 4.37E-04 2 1
98-82-8 VOCs cumene 4.00E-01 I 1.14E-01 1.00E-01 I 2.55E-01 2 121725-46-2 Pesticides cyanazine 2.00E-03 H 8.40E-01 H 1 1
57-12-5 Cyanides CYANIDE CYANIDE NOTES 8.00E-04 S 2.29E-04 6.30E-04 I 1.00E+00 1 1460-19-5 Cyanides cyanogen 1.00E-03 I 2 1506-68-3 Cyanides cyanogen bromide 9.00E-02 I 2 1110-82-7 VOCs cyclohexane 6.00E+00 I 1.71E+00 1 1108-94-1 VOCs cyclohexanone 7.00E-01 P 2.00E-01 5.00E+00 I 2 1108-91-8 VOCs cyclohexylamine 2.00E-01 I 2 1
68085-85-8 Pesticides cyhalothrin/karate 1.00E-03 O 1 152315-07-8 Pesticides cypermethrin 2.30E-02 O 1 166215-27-8 Pesticides cyromazine 5.00E-01 O 1 1
1861-32-1 Herbicides dacthal 1.00E-02 I 1 175-99-0 Herbicides dalapon, sodium salt 3.00E-02 I 2 1
39515-41-8 Pesticides danitol 2.50E-02 I 1 194-82-6 Pesticides db;2,4- 3.00E-02 O 1 172-54-8 Pesticides ddd 6.90E-05 C 2.42E-01 3.00E-05 X 2.40E-01 I 9.00E-02 5.36E+04 1.64E-04 2.89E-05 1 4.58E+04 4.58E+01 172-55-9 Pesticides dde 9.70E-05 C 3.40E-01 3.00E-04 X 3.40E-01 I 1.20E-01 5.36E+04 8.61E-04 1.87E-04 1 8.64E+04 8.64E+01 150-29-3 Pesticides ddt 9.70E-05 I 3.40E-01 5.00E-04 I 3.40E-01 I 2.50E-02 5.36E+04 3.32E-04 3.83E-05 1 6.78E+05 6.78E+02 1
1163-19-5 PBDEs decabromodiphenyl ether 7.00E-03 I 7.00E-04 I 3.20E+00 1 18065-48-3 Pesticides demeton 4.00E-05 I 1 1
103-23-1 Phthalates di(2-ethylhexyl)adipate 6.00E-01 I 1.20E-03 I 1 12303-16-4 Pesticides diallate 6.10E-02 H 1 1
333-41-5 Pesticides diazinon 7.00E-04 A 1 153-70-3 cPAHs DIBENZ[a,h]ANTHRACENE PAH NOTES 2.49E-03 3.00E+01 6.03E-07 6.03E-07 1 1.79E+06 1.79E+03 1
132-64-9 PAHs dibenzofuran 1.00E-03 X 1.71E-04 1 196-12-8 Pesticides dibromo-3-chloropropane;1,2- 2.00E-04 I 5.71E-05 6.00E-03 P 2.10E+01 2.00E-04 P 8.00E-01 P 2 1
631-64-1 SVOCs dibromoacetic acid 1 1106-37-6 Pesticides dibromobenzene;1,4- 1.00E-02 I 2 1124-48-1 VOCs dibromochloromethane TTHM NOTES 2.00E-02 I 8.40E-02 I 2.60E+03 3.75E+00 3.21E-02 2.06E-02 2 6.31E+01 6.31E-02 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 187 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
84-74-2 Phthalates di-butyl phthalate 1.00E-01 I 1.12E+01 8.90E+01 3.85E-08 8.16E-09 1 1.57E+03 1.57E+00 11918-00-9 Herbicides dicamba 3.00E-02 I 1 13400-09-7 Disinfectants dichloramine MCL FOR DISINFECTANTS 1 1
764-41-0 VOCs dichloro-2-butene;1,4- 4.20E-03 P 1.47E+01 2 179-43-6 SVOCs dichloroacetic acid 4.00E-03 I 5.00E-02 I 1 195-50-1 VOCs dichlorobenzene;1,2- 2.00E-01 H 5.71E-02 9.00E-02 I 1.56E+02 5.56E+01 7.79E-02 3.54E-02 2 3.79E+02 3.79E-01 1
541-73-1 VOCs dichlorobenzene;1,3- 5.98E-02 2 1106-46-7 VOCs dichlorobenzene;1,4- 8.00E-01 I 2.29E-01 1.10E-05 C 3.85E-02 7.00E-02 A 5.40E-03 C 7.38E+01 5.56E+01 9.96E-02 4.61E-02 2 6.16E+02 6.16E-01 1
91-94-1 SVOCs dichlorobenzidine;3,3'- 3.40E-04 C 1.19E+00 4.50E-01 I 3.11E+00 3.12E+02 1.64E-07 2.23E-08 1 7.24E+02 7.24E-01 175-71-8 VOCs dichlorodifluoromethane 1.00E-01 X 2.86E-02 2.00E-01 I 8.10E+00 2 175-34-3 VOCs dichloroethane;1,1- 1.60E-06 C 5.60E-03 2.00E-01 P 5.70E-03 C 5.06E+03 2.30E-01 1.41E-01 2 5.34E+01 5.34E-02 1
107-06-2 VOCs dichloroethane;1,2- 7.00E-03 P 2.00E-03 2.60E-05 I 9.10E-02 6.00E-03 X 9.10E-02 I 8.52E+03 1.20E+00 4.01E-02 2.28E-02 2 3.80E+01 3.80E-02 1540-59-0 VOCs dichloroethylene,1,2- (mixed isomers) 9.00E-03 H 2 1
75-35-4 VOCs dichloroethylene;1,1- 2.00E-01 I 5.71E-02 5.00E-02 I 2.25E+03 5.60E+00 1.07E+00 7.06E-01 2 6.50E+01 6.50E-02 1156-59-2 VOCs dichloroethylene;1,2-,cis 2.00E-03 I 3.50E+03 1.67E-01 1.00E-01 2 3.55E+01 3.55E-02 1156-60-5 VOCs dichloroethylene;1,2-,trans 2.00E-02 I 6.30E+03 1.58E+00 3.85E-01 2.41E-01 2 3.80E+01 3.80E-02 1120-83-2 Phenols DICHLOROPHENOL;2,4- pH-DEPENDENT 3.00E-03 I 4.50E+03 4.07E+01 1.30E-04 3.43E-05 2 1.47E+02 1.47E-01 1
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- 1.00E-02 I 1 178-87-5 VOCs dichloropropane;1,2- 4.00E-03 I 1.14E-03 3.70E-06 P 1.30E-02 4.00E-02 P 3.70E-02 P 2.80E+03 4.11E+00 1.15E-01 6.47E-02 2 4.70E+01 4.70E-02 1
616-23-9 SVOCs dichloropropanol;2,3- 3.00E-03 I 2 1542-75-6 VOCs dichloropropene;1,3- 2.00E-02 I 5.71E-03 4.00E-06 I 1.40E-02 3.00E-02 I 1.00E-01 I 2.80E+03 1.91E+00 7.26E-01 3.96E-01 2 2.71E+01 2.71E-02 1
62-73-7 Pesticides dichlorvos 5.00E-04 I 1.43E-04 8.30E-05 C 2.91E-01 5.00E-04 I 2.90E-01 I 2 177-73-6 VOCs dicyclopentadiene 3.00E-04 X 8.57E-05 8.00E-02 P 2 160-57-1 Pesticides dieldrin 4.60E-03 I 1.61E+01 5.00E-05 I 1.60E+01 I 1.95E-01 4.67E+03 6.19E-04 1.13E-04 1 2.55E+04 2.55E+01 184-66-2 Phthalates diethyl phthalate 8.00E-01 I 1.08E+03 7.30E+01 1.85E-05 4.70E-06 1 8.22E+01 8.22E-02 1
112-34-5 Glycols diethylene glycol monobutyl ether 1.00E-04 P 2.86E-05 3.00E-02 P 2 1111-90-0 Glycols diethylene glycol monoethyl ether 3.00E-04 P 8.57E-05 6.00E-02 P 2 1617-84-5 SVOCs diethylformamide 1.00E-03 P 1 1
56-53-1 SVOCs diethylstilbesterol 1.00E-01 C 3.50E+02 3.50E+02 C 1 143222-48-6 Pesticides difenzoquat 8.30E-02 O 1 135367-38-5 Pesticides diflubenzuron 2.00E-02 I 1 1
75-37-6 VOCs difluoroethane;1,1- 4.00E+01 I 1.14E+01 2 11445-75-6 VOCs diisopropyl methylphosphonate 8.00E-02 I 2 1
55290-64-7 Pesticides dimethipin 2.20E-02 O 1 160-51-5 Pesticides dimethoate 2.20E-03 O 1 1
119-90-4 SVOCs dimethoxybenzidine;3,3'- 1.60E+00 P 1 1131-11-3 Phthalates dimethyl phthalate 3.60E+01 1 1120-61-6 Phthalates dimethyl terephthalate 1.00E-01 I 2 1
21436-96-4 SVOCs dimethylaniline hydrochloride;2,4- 5.80E-01 H 1 195-68-1 SVOCs dimethylaniline;2,4- 2.00E-03 X 2.00E-01 P 2 1
121-69-7 VOCs dimethylaniline;N,N- 2.00E-03 I 2.70E-02 P 2 1119-93-7 SVOCs dimethylbenzidine;3,3'- 1.10E+01 P 1 1
68-12-2 VOCs dimethylformamide;N,N- 3.00E-02 I 8.57E-03 1.00E-01 P 2 157-14-7 VOCs dimethylhydrazine;1,1- 2.00E-06 X 5.71E-07 1.00E-04 X 2 1
540-73-8 VOCs dimethylhydrazine;1,2- 1.60E-01 C 5.60E+02 5.50E+02 C 2 1105-67-9 Phenols dimethylphenol;2,4- 2.00E-02 I 7.87E+03 9.38E+01 8.20E-05 3.02E-05 2 2.09E+02 2.09E-01 1576-26-1 Phenols dimethylphenol;2,6- 6.00E-04 I 2 1
95-65-8 Phenols dimethylphenol;3,4- 1.00E-03 I 2 199-65-0 Explosives dinitrobenzene;m- 1.00E-04 I 1 1
528-29-0 SVOCs dinitrobenzene;o- 1.00E-04 P 1 1100-25-4 SVOCs dinitrobenzene;p- 1.00E-04 P 1 1131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- 2.00E-03 I 1 1
51-28-5 Phenols DINITROPHENOL;2,4- pH-DEPENDENT 2.00E-03 I 2.79E+03 1.50E+00 1.82E-05 1.48E-06 1 1.00E-02 1.00E-05 125550-58-7 Phenols dinitrophenols 1 1
E1615210 SVOCs dinitrotoluene mixture; 2,4-/2,6- 9.00E-04 X 6.80E-01 I 1 1121-14-2 Explosives dinitrotoluene;2,4- 8.90E-05 C 3.12E-01 2.00E-03 I 3.10E-01 C 2.70E+02 3.80E+00 3.80E-06 1.02E-06 1 9.55E+01 9.55E-02 1606-20-2 Explosives dinitrotoluene;2,6- 3.00E-04 X 1.50E+00 P 1.82E+02 3.06E-05 8.83E-06 1 6.92E+01 6.92E-02 1117-84-0 Phthalates di-n-octyl phthalate 1.00E-02 P 2.00E-02 2.74E-03 5.20E-04 1 8.32E+07 8.32E+04 1
88-85-7 Herbicides dinoseb 1.00E-03 I 1 1123-91-1 VOCs dioxane;1,4- 3.00E-02 I 8.57E-03 5.00E-06 I 1.75E-02 3.00E-02 I 1.00E-01 I 2 1957-51-7 Pesticides diphenamid 3.00E-02 I 1 1122-39-4 Pesticides diphenylamine 1.00E-01 O 3.00E+01 1 1122-66-7 SVOCs diphenylhydrazine;1,2- 2.20E-04 I 7.70E-01 8.00E-01 I 2.49E+01 1 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 188 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
85-00-7 Pesticides diquat 2.20E-03 I 1 11937-37-7 Dyes direct black 38 2.10E-03 C 7.35E+00 7.40E+00 C 1 12602-46-2 Dyes direct blue 6 2.10E-03 C 7.35E+00 7.40E+00 C 1 1
16071-86-6 Dyes direct brown 95 1.90E-03 C 6.65E+00 6.70E+00 C 1 1298-04-4 Pesticides disulfoton 4.00E-05 I 1 1505-29-3 SVOCs dithiane;1,4- 1.00E-02 I 1 1330-54-1 Pesticides (Carbamate) diuron 2.00E-03 I 1 1534-52-1 Phenols DNOC 8.00E-05 X 1 1
2439-10-3 Pesticides dodine 2.00E-02 O 1 1115-29-7 Pesticides endosulfan 6.00E-03 I 5.10E-01 2.70E+02 4.59E-04 1.14E-04 1 2.04E+03 2.04E+00 1
1031-07-8 Pesticides endosulfan sulfate 6.00E-03 P 1 1959-98-8 Pesticides endosulfan;alpha 1 1
33213-65-9 Pesticides endosulfan;beta 1 1145-73-3 Herbicides endothall 2.00E-02 I 1 1
72-20-8 Pesticides endrin 3.00E-04 I 2.50E-01 3.97E+03 3.08E-04 6.63E-05 1 1.08E+04 1.08E+01 17421-93-4 Pesticides endrin aldehyde 1 1
106-89-8 VOCs epichlorohydrin 1.00E-03 I 2.86E-04 1.20E-06 I 4.20E-03 6.00E-03 P 9.90E-03 I 2 1106-88-7 VOCs epoxybutane 2.00E-02 I 5.71E-03 2 1
16672-87-0 Pesticides ethephon 5.00E-03 I 1 1563-12-2 Pesticides ethion 5.00E-04 I 1 1111-15-9 VOCs ethoxyethanol acetate;2- 6.00E-02 P 1.71E-02 1.00E-01 P 2 1110-80-5 VOCs ethoxyethanol;2- 2.00E-01 I 5.71E-02 9.00E-02 P 2 1141-78-6 VOCs ethyl acetate 7.00E-02 P 2.00E-02 9.00E-01 I 3.19E-03 2 1140-88-5 VOCs ethyl acrylate 8.00E-03 P 2.29E-03 5.00E-03 P 4.80E-02 H 2 1
75-00-3 VOCs ethyl chloride 1.00E+01 I 2.86E+00 2.47E-01 2 1759-94-4 Pesticides ethyl dipropylthiocarbamate;S- 5.00E-02 O 2 1
60-29-7 VOCs ethyl ether 2.00E-01 I 8.76E-01 2 197-63-2 VOCs ethyl methacrylate 3.00E-01 P 8.57E-02 9.00E-02 H 1.42E-02 2 1
2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate 1.00E-05 I 1 1100-41-4 VOCs ethylbenzene 1.00E+00 I 2.86E-01 1.00E-01 I 1.69E+02 3.75E+01 3.23E-01 1.62E-01 2 2.04E+02 2.04E-01 1109-78-4 SVOCs ethylene cyanohydrin 7.00E-02 P 2 1107-15-3 VOCs ethylene diamine 9.00E-02 P 2 1106-93-4 VOCs ethylene dibromide (EDB) 9.00E-03 I 2.57E-03 6.00E-04 I 2.10E+00 9.00E-03 I 2.00E+00 I 1.54E-02 2 6.60E+01 6.60E-02 1107-21-1 VOCs ethylene glycol 4.00E-01 C 1.14E-01 2.00E+00 I 2 1111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) 1.60E+00 I 4.57E-01 1.00E-01 I 2 1
75-21-8 VOCs ethylene oxide 3.00E-02 C 8.57E-03 3.00E-03 I-M 1.05E+01 3.10E-01 C 1.54E-02 2 196-45-7 SVOCs ethylene thiourea 1.30E-05 C 4.55E-02 8.00E-05 I 4.50E-02 C 1 184-72-0 Phthalates ethylphthalyl ethylglycolate 3.00E+00 I 1 1
101200-48-0 Pesticides express 8.00E-03 I 1 122224-92-6 Pesticides fenamiphos 2.50E-04 I 1 1
2164-17-2 Pesticides fluometuron 1.30E-02 I 1 1206-44-0 PAHs fluoranthene 4.00E-02 I 2.06E-01 1.15E+03 6.60E-04 1.66E-04 1 4.91E+04 4.91E+01 1
86-73-7 PAHs fluorene 4.00E-02 I 1.98E+00 3.00E+01 2.61E-03 8.58E-04 1 7.71E+03 7.71E+00 116984-48-8 Nutrients FLUORIDE FLUORIDE NOTES 1.30E-02 C 3.71E-03 6.00E-02 I 1 159756-60-4 Pesticides fluridone 8.00E-02 I 1 156425-91-3 Pesticides flurprimidol 4.00E-02 O 1 166332-96-5 Pesticides flutolanil 5.00E-01 O 1 169409-94-5 Pesticides fluvalinate 1.00E-02 I 1 1
133-07-3 Pesticides folpet 9.00E-02 O 1 172178-02-0 Pesticides fomesafen 2.50E-03 O 1 1
944-22-9 Pesticides fonofos 2.00E-03 I 1 150-00-0 VOCs formaldehyde 9.80E-03 A 2.80E-03 1.30E-05 I 4.55E-02 2.00E-01 I 2.10E-02 C 2 164-18-6 VOCs formic acid 3.00E-04 X 8.57E-05 9.00E-01 P 2 1
39148-24-8 Pesticides fosetyl-al 2.50E+00 O 1 1110-00-9 Furans furan 1.00E-03 I 1.43E-01 2 1
67-45-8 SVOCs furazolidone 3.80E+00 H 1 198-01-1 VOCs furfural 5.00E-02 H 1.43E-02 3.00E-03 I 2 1
531-82-8 SVOCs furium 4.30E-04 C 1.51E+00 1.50E+00 C 1 160568-05-0 Pesticides furmecyclox 8.60E-06 C 3.01E-02 3.00E-02 I 1 177182-82-2 Pesticides glufosinate-ammonium 6.00E-03 O 1 1
765-34-4 VOCs glycidaldehyde 1.00E-03 H 2.86E-04 4.00E-04 I 2 11071-83-6 SVOCs glyphosate 1.00E-01 I 1 1
unavailable20 Radionuclides gross alpha particle activity ALPHA PARTICLE NOTE 1 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 189 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
unavailable21 Radionuclides gross beta particle activity BETA PARTICLE NOTE 1 186-50-0 Pesticides guthion 1.00E-02 A 2.86E-03 3.00E-03 A 1 1
69806-40-2 Pesticides haloxyfop-methyl 5.00E-05 I 1 179277-27-3 Pesticides harmony 4.30E-02 O 1 1
76-44-8 Pesticides heptachlor 1.30E-03 I 4.55E+00 5.00E-04 I 4.50E+00 I 1.80E-01 1.12E+04 4.47E-02 1.27E-02 1 9.53E+03 9.53E+00 11024-57-3 Pesticides heptachlor epoxide 2.60E-03 I 9.10E+00 1.30E-05 I 9.10E+00 I 2.00E-01 1.12E+04 3.90E-04 8.01E-05 2 8.32E+04 8.32E+01 1
142-82-5 VOCs heptane;n- 4.00E-01 P 1.14E-01 3.00E-04 X 2 187-82-1 SVOCs hexabromobenzene 2.00E-03 I 1 1
68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- 2.00E-04 I 1 1118-74-1 Pesticides hexachlorobenzene 4.60E-04 I 1.61E+00 8.00E-04 I 1.60E+00 I 6.20E+00 8.69E+03 5.41E-02 1.36E-02 1 8.00E+04 8.00E+01 1
87-68-3 VOCs hexachlorobutadiene 2.20E-05 I 7.70E-02 1.00E-03 P 7.80E-02 I 3.23E+00 2.78E+00 3.34E-01 1.41E-01 2 5.37E+04 5.37E+01 1319-84-6 Pesticides hexachlorocyclohexane;alpha 1.80E-03 I 6.30E+00 8.00E-03 A 6.30E+00 I 2.00E+00 1.30E+02 4.35E-04 1.02E-04 1 1.76E+03 1.76E+00 1319-85-7 Pesticides hexachlorocyclohexane;beta- 5.30E-04 I 1.86E+00 1.80E+00 I 2.40E-01 1.30E+02 3.05E-05 4.81E-06 1 2.14E+03 2.14E+00 1608-73-1 SVOCs hexachlorocyclohexane;technical 5.10E-04 I 1.79E+00 1.80E+00 I 1 1
77-47-4 Pesticides hexachlorocyclopentadiene 2.00E-04 I 5.71E-05 6.00E-03 I 1.80E+00 4.34E+00 1.11E+00 4.18E-01 2 2.00E+05 2.00E+02 134465-46-8 Dioxins hexachlorodibenzo-p-dioxin, mixture 1.30E+00 I 4.55E+03 6.20E+03 I 1 1
67-72-1 VOCs hexachloroethane 3.00E-02 I 8.57E-03 1.10E-05 C 3.85E-02 7.00E-04 I 4.00E-02 I 5.00E+01 8.69E+01 1.59E-01 7.24E-02 2 1.78E+03 1.78E+00 170-30-4 SVOCs hexachlorophene 3.00E-04 I 1 1
822-06-0 VOCs hexamethylene diisocyanate;1,6- 1.00E-05 I 2.86E-06 2 1110-54-3 VOCs hexane;n- 7.00E-01 I 2.00E-01 6.00E-02 H 9.50E+00 7.40E+01 4.11E+01 2 3.41E+03 3.41E+00 1591-78-6 VOCs hexanone;2- 3.00E-02 I 8.57E-03 5.00E-03 I 2 1
51235-04-2 Pesticides hexazinone 3.30E-02 I 1 1302-01-2 VOCs hydrazine 3.00E-05 P 8.57E-06 4.90E-03 I 1.72E+01 3.00E+00 I 2 1
10034-93-2 SVOCs hydrazine sulfate 4.90E-03 I 1.72E+01 3.00E+00 I 1 17647-01-0 VOCs hydrogen chloride 2.00E-02 I 5.71E-03 2 1
74-90-8 Cyanides hydrogen cyanide 8.00E-04 I 2.29E-04 6.00E-04 I 3.47E-03 2 17783-06-4 VOCs hydrogen sulfide 2.00E-03 I 5.71E-04 2 1
123-31-9 SVOCs hydroquinone 4.00E-02 P 6.00E-02 P 1 135554-44-0 Pesticides imazalil 2.50E-03 O 6.10E-02 O 1 181335-37-7 Pesticides imazaquin 2.50E-01 I 1 1
193-39-5 cPAHs INDENO[1,2,3-cd]PYRENE PAH NOTES 2.20E-05 3.00E+01 6.56E-05 8.40E-06 1 3.47E+06 3.47E+03 136734-19-7 Pesticides iprodione 4.00E-02 I 1 1
7439-89-6 Metals iron 7.00E-01 P 0.00E+00 0.00E+00 1 178-83-1 VOCs isobutyl alcohol 3.00E-01 I 1.98E-04 2 178-59-1 SVOCs isophorone 2.00E+00 C 5.71E-01 2.00E-01 I 9.50E-04 I 1.20E+04 4.38E+00 2.72E-04 1.10E-04 2 4.68E+01 4.68E-02 1
33820-53-0 Pesticides isopropalin 1.50E-02 I 1 11832-54-8 SVOCs isopropyl methyl phosphonic acid 1.00E-01 I 1 1
82558-50-7 Pesticides isoxaben 5.00E-02 I 1 177501-63-4 Pesticides lactofen 8.00E-03 O 1 1
7439-92-1 Metals LEAD LEAD NOTES 0.00E+00 0.00E+00 1 1.00E+04 1.00E+04 158-89-9 Pesticides lindane 3.10E-04 C 1.09E+00 3.00E-04 I 1.10E+00 C 6.80E+00 1.30E+02 5.74E-04 1.34E-04 1 1.35E+03 1.35E+00 1
330-55-2 Pesticides (Carbamate) linuron 7.70E-03 O 1 17791-03-9 Perchlorates lithium perchlorate 7.00E-04 I 1 1
83055-99-6 Pesticides londax 2.00E-01 I 1 1121-75-5 Pesticides malathion 2.00E-02 I 1 1108-31-6 SVOCs maleic anhydride 7.00E-04 C 2.00E-04 1.00E-01 I 2 1123-33-1 SVOCs maleic hydrazide 5.00E-01 I 1 1109-77-3 VOCs malononitrile 1.00E-04 P 2 1
8018-01-7 Pesticides mancozeb 3.00E-02 H 1 112427-38-2 Pesticides maneb 5.00E-03 I 1 1
7439-96-5 Metals MANGANESE (Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 1.40E-01 I 0.00E+00 0.00E+00 17439-96-5a Metals MANGANESE (Non-Diet) MANGANESE NOTES 5.00E-05 I 1.43E-05 4.67E-02 I 0.00E+00 0.00E+00 1 1
950-10-7 Pesticides mephosfolan 9.00E-05 H 1 124307-26-4 Pesticides mepiquat chloride 3.00E-02 I 1 1
7487-94-7 Metal compounds mercuric chloride 3.00E-04 S 8.57E-05 3.00E-04 I 1 17439-97-6 Metals mercury 3.00E-04 I 8.57E-05 4.70E-01 1.65E-01 1 5.20E+01 5.20E+01 1
150-50-5 Pesticides merphos 3.00E-05 I 1 157837-19-1 Pesticides metalaxyl 6.00E-02 I 1 1
126-98-7 VOCs methacrylonitrile 3.00E-02 P 8.57E-03 1.00E-04 I 5.70E-03 2 110265-92-6 Pesticides methamidosphos 5.00E-05 I 1 1
67-56-1 VOCs methanol 2.00E+01 I 5.71E+00 2.00E+00 I 2 1950-37-8 Pesticides methidathion 1.50E-03 O 1 1
16752-77-5 Pesticides (Carbamate) methomyl 2.50E-02 I 1 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 190 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
99-59-2 SVOCs methoxy-5-nitroaniline;2- 4.90E-02 C 1 172-43-5 Pesticides methoxychlor 5.00E-03 I 4.50E-02 1.55E+03 6.48E-04 1.18E-04 1 8.00E+04 8.00E+01 1
110-49-6 VOCs methoxyethanol acetate;2- 1.00E-03 P 2.86E-04 8.00E-03 P 2 1109-86-4 VOCs methoxyethanol;2- 2.00E-02 I 5.71E-03 5.00E-03 P 2 1
79-20-9 VOCs methyl acetate 1.00E+00 X 2.88E-03 2 196-33-3 VOCs methyl acrylate 2.00E-02 P 5.71E-03 3.00E-02 H 4.30E-03 2 178-93-3 VOCs methyl ethyl ketone 5.00E+00 I 1.43E+00 6.00E-01 I 1.31E-03 2 1
108-10-1 VOCs methyl isobutyl ketone 3.00E+00 I 8.57E-01 8.00E-02 H 2.92E-03 2 122967-92-6 Metals (organometallic) METHYL MERCURY METHYL MERCURY NOTES 1.00E-04 I 1 1
80-62-6 VOCs methyl methacrylate 7.00E-01 I 2.00E-01 1.40E+00 I 6.90E-03 2 190-12-0 PAHs methyl naphthalene;1- 7.00E-02 A 2.90E-02 P 6.32E-03 2 191-57-6 PAHs methyl naphthalene;2- 4.00E-03 I 6.99E-03 2 1
298-00-0 Pesticides methyl parathion 2.50E-04 I 1 125013-15-4 VOCs methyl styrene 4.00E-02 H 1.14E-02 6.00E-03 H 2 1
98-83-9 VOCs methyl styrene, alpha 7.00E-02 H 2 11634-04-4 VOCs methyl tert-butyl ether 3.00E+00 I 8.57E-01 2.60E-07 C 9.10E-04 1.80E-03 C 5.00E+04 1.80E-02 1.59E-02 2 1.09E+01 1.09E-02 1
94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- 5.00E-04 I 1 199-55-8 SVOCs methyl-5-nitroaniline;2- 2.00E-02 X 9.00E-03 P 1 1
636-21-5 SVOCs methylaniline hydrochloride;2- 3.70E-05 C 1.30E-01 1.30E-01 C 1 195-53-4 VOCs methylaniline;2- 5.10E-05 C 1.79E-01 1.60E-02 P 2 1
101-14-4 SVOCs methylene bis(2-chloroaniline);4,4'- 4.30E-04 C 1.51E+00 2.00E-03 P 1.00E-01 P 1 1101-61-1 SVOCs methylene bis(n,n'-dimethyl)aniline;4,4'- 1.30E-05 C 4.55E-02 4.60E-02 I 1 1
74-95-3 VOCs methylene bromide 4.00E-03 X 1.14E-03 1.00E-02 H 1.96E-02 2 175-09-2 VOCs methylene chloride 6.00E-01 I 1.71E-01 1.00E-08 I-M 3.50E-05 6.00E-03 I 2.00E-03 I-M 1.30E+04 9.00E-01 8.98E-02 5.67E-02 2 1.00E+01 1.00E-02 1
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) 6.00E-04 I 1.71E-04 1 19016-87-9 SVOCs methylene diphenyl diisocyanate (PMDI) 6.00E-04 I 1.71E-04 1 1
101-77-9 SVOCs methylenebisbenzenamine;4,4- 2.00E-02 C 5.71E-03 4.60E-04 C 1.61E+00 1.60E+00 C 1 160-34-4 VOCs methylhydrazine 2.00E-05 X 5.71E-06 1.00E-03 X 3.50E+00 1.00E-03 P 2 1
51218-45-2 Pesticides metolachlor 1.50E-01 I 1 121087-64-9 Pesticides metribuzin 2.50E-02 I 1 1
2385-85-5 Pesticides mirex 5.10E-03 C 1.79E+01 2.00E-04 I 1.80E+01 C 1 12212-67-1 Pesticides molinate 2.00E-03 I 1 17439-98-7 Metals molybdenum 5.00E-03 I 0.00E+00 0.00E+00 1 1
10599-90-3 Disinfectants monochloramine MCL FOR DISINFECTANTS 1.00E-01 I 1 1300-76-5 Pesticides naled 2.00E-03 I 1 1
91-20-3 PAHs naphthalene 3.00E-03 I 8.57E-04 3.40E-05 C 1.19E-01 2.00E-02 I 3.10E+01 1.05E+01 1.98E-02 8.24E-03 2 1.19E+03 1.19E+00 115299-99-7 Pesticides napropamide 1.20E-01 O 1 1
104-51-8 VOCs n-butylbenzene 5.00E-02 P 2.42E-01 2 1E715532 Metals nickel refinery dust 1.40E-05 C 4.00E-06 2.40E-04 I 8.40E-01 1.10E-02 C 9.10E-01 C 0.00E+00 0.00E+00 1 1
7440-02-0 Metals NICKEL SOLUBLE SALTS HARDNESS - DEPENDENT 9.00E-05 A 2.57E-05 2.60E-04 C 9.10E-01 2.00E-02 I 4.70E+01 0.00E+00 0.00E+00 1 6.50E+01 6.50E+01 112035-72-2 Metal compounds nickel subsulfide 1.40E-05 C 4.00E-06 4.80E-04 I 1.68E+00 1.10E-02 C 1.70E+00 C 1 114797-55-8 Nutrients nitrate 1.60E+00 I 1 114797-65-0 Nutrients nitrite 1.00E-01 I 1 1
88-74-4 SVOCs nitroaniline, 2- 5.00E-05 X 1.43E-05 1.00E-02 X 1 1100-01-6 SVOCs nitroaniline, 4- 6.00E-03 P 1.71E-03 4.00E-03 P 2.00E-02 P 1 1
98-95-3 Explosives nitrobenzene 9.00E-03 I 2.57E-03 4.00E-05 I 1.40E-01 2.00E-03 I 2.09E+03 2.89E+00 9.84E-04 3.96E-04 2 1.19E+02 1.19E-01 167-20-9 SVOCs nitrofurantoin 7.00E-02 H 1 159-87-0 SVOCs nitrofurazone 3.70E-04 C 1.30E+00 1.30E+00 C 1 1
556-88-7 SVOCs nitroguanidine 1.00E-01 I 1 179-46-9 VOCs nitropropane;2- 2.00E-02 I 5.71E-03 2.70E-03 H 9.45E+00 2.60E-03 2 1
1116-54-7 SVOCs nitrosodiethanolamine;N- 8.00E-04 C 2.80E+00 2.80E+00 I 1 155-18-5 SVOCs nitrosodiethylamine;N- 4.30E-02 I 1.51E+02 1.50E+02 I 2 162-75-9 SVOCs nitrosodimethylamine;N- 4.00E-05 X 1.14E-05 1.40E-02 I 4.90E+01 8.00E-06 P 5.10E+01 I 2.60E-02 2 1
924-16-3 VOCs nitroso-di-n-butylamine;N- 1.60E-03 I 5.60E+00 5.40E+00 I 2 1621-64-7 SVOCs nitroso-di-n-propylamine;N- 2.00E-03 C 7.00E+00 7.00E+00 I 9.89E+03 1.13E+00 9.23E-05 5.44E-05 1 2.40E+01 2.40E-02 1
86-30-6 SVOCs nitrosodiphenylamine;N- 2.60E-06 C 9.10E-03 4.90E-03 I 3.51E+01 1.36E+02 2.05E-04 1.02E-04 1 1.29E+03 1.29E+00 1759-73-9 SVOCs nitroso-n-ethylurea;n- 7.70E-03 C 2.70E+01 2.70E+01 C 1 1
10595-95-6 SVOCs nitroso-N-methylethylamine;N- 6.30E-03 C 2.21E+01 2.20E+01 I 1 1684-93-5 SVOCs nitroso-n-methylurea,n- 3.40E-02 C 1.19E+02 1.20E+02 C 1 1930-55-2 SVOCs nitrosopyrrolidine;N- 6.10E-04 I 2.14E+00 2.10E+00 I 2 1
99-08-1 Explosives nitrotoluene, m- 1.00E-04 X 2 188-72-2 Explosives nitrotoluene, o- 9.00E-04 P 2.20E-01 P 1.73E-04 2 199-99-0 Explosives nitrotoluene, p- 4.00E-03 P 1.60E-02 P 2 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 191 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
84852-15-3 Phenols nonylphenol 1 127314-13-2 Pesticides norflurazon 1.50E-02 O 1 185509-19-9 Pesticides nustar 2.00E-03 O 1 132536-52-0 PBDEs octabromodiphenyl ether 3.00E-03 I 3.20E+00 1 1
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine 5.00E-02 I 1 1152-16-9 SVOCs octamethylpyrophosphoramide 2.00E-03 H 1 1
19044-88-3 Pesticides oryzalin 1.40E-01 O 7.80E-03 O 1 119666-30-9 Pesticides oxadiazon 5.00E-03 I 1 123135-22-0 Pesticides (Carbamate) oxamyl 2.50E-02 I 1 142874-03-3 Pesticides oxyfluorfen 3.00E-02 O 7.30E-02 O 1 176738-62-0 Herbicides paclobutrazol 1.30E-02 I 1 1
1910-42-5 Pesticides Paraquat Dichloride 4.50E-03 I 1 6.78E+03 6.78E+00 156-38-2 Pesticides parathion 6.00E-03 H 1 1
1114-71-2 Pesticides pebulate 5.00E-02 H 2 140487-42-1 Pesticides pendimethalin 3.00E-01 O 1 1
87-84-3 SVOCs pentabromo-6-chloro-cyclohexane;1,2,3,4,5- 2.00E-02 X 2.30E-02 H 1 160348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- 1.00E-04 I 8.10E+03 1 132534-81-9 PBDEs pentabromodiphenyl ethers 2.00E-03 I 1 1
608-93-5 SVOCs pentachlorobenzene 8.00E-04 I 1 3.21E+04 3.21E+01 182-68-8 Pesticides pentachloronitrobenzene 3.00E-03 I 2.60E-01 H 1 187-86-5 Herbicides PENTACHLOROPHENOL pH-DEPENDENT 5.10E-06 C 1.79E-02 5.00E-03 I 4.00E-01 I 1.95E+03 1.10E+01 1.00E-06 2.10E-07 1 5.92E+02 5.92E-01 1
14797-73-0 Perchlorates perchlorate and perchlorate salts 7.00E-04 I 1 152645-53-1 Pesticides permethrin 5.00E-02 I 1 1
unavailable19 General Chemistry pH pH NOTES 1 113684-63-4 Pesticides phenmedipham 2.40E-01 O 1 1
108-95-2 Phenols phenol 2.00E-01 C 5.71E-02 3.00E-01 I 8.28E+04 1.40E+00 1.63E-05 6.49E-06 2 2.88E+01 2.88E-02 1106-50-3 SVOCs phenylenediamine, p- 1.90E-01 H 1 1108-45-2 SVOCs phenylenediamine;m- 6.00E-03 I 1 1
95-54-5 SVOCs phenylenediamine;o- 4.00E-03 P 4.70E-02 H 1 162-38-4 Metals (organometallic) phenylmercuric acetate 8.00E-05 I 1 190-43-7 Phenols phenylphenol;2- 1.90E-03 H 1 1
298-02-2 Pesticides phorate 2.00E-04 H 1 175-44-5 VOCs phosgene 3.00E-04 I 8.57E-05 2 1
732-11-6 Pesticides phosmet 2.00E-02 I 1 17803-51-2 Gases phosphine 3.00E-04 I 8.57E-05 3.00E-04 I 2 17664-38-2 SVOCs phosphoric acid 1.00E-02 I 2.86E-03 4.90E+01 P 2 17723-14-0 Nonmetal inorganics phosphorus 2.00E-05 I 2 1
100-21-0 Phthalates phthalic acid;p- 1.00E+00 H 1 185-44-9 Phthalates phthalic anhydride 2.00E-02 C 5.71E-03 2.00E+00 I 1 1
1918-02-1 Herbicides picloram 7.00E-02 I 1 129232-93-7 Pesticides pirimiphos-methyl 7.00E-05 O 1 136355-01-8 PBBs polybrominated biphenyls 8.60E-03 C 3.01E+01 7.00E-06 H 3.00E+01 C 1 1
1336-36-3 PCBs polychlorinated biphenyls (PCBs) 5.70E-04 I 2.00E+00 2.00E+00 I 7.00E-01 3.12E+04 1 3.09E+05 3.09E+02 1151-50-8 Cyanides potassium cyanide 2.00E-03 I 1 1
7778-74-7 Perchlorates potassium perchlorate 7.00E-04 I 1 1506-61-6 Cyanides potassium silver cyanide 5.00E-03 I 1 1
67747-09-5 Pesticides prochloraz (not in HSDB) 9.00E-03 I 1.50E-01 I 1 126399-36-0 Pesticides profluralin 6.00E-03 H 1 1
1610-18-0 Pesticides prometon 1.50E-02 I 1 17287-19-6 Pesticides prometryn 4.00E-02 O 1 1
23950-58-5 Pesticides pronamide 7.50E-02 I 1 11918-16-7 Pesticides propachlor 1.30E-02 I 1 1
709-98-8 Pesticides propanil 5.00E-03 I 1 12312-35-8 Pesticides propargite 4.00E-02 O 1.90E-01 O 2 1
107-19-7 VOCs propargyl alcohol 2.00E-03 I 2 1139-40-2 Pesticides propazine 2.00E-02 I 1 1122-42-9 Pesticides propham 2.00E-02 I 1 1
60207-90-1 Pesticides propiconazole 1.00E-01 O 1 1123-38-6 VOCs propionaldehyde 8.00E-03 I 2.29E-03 2 1
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- 1.00E-03 I 1 1103-65-1 VOCs propylbenzene;n- 1.00E+00 X 2.86E-01 1.00E-01 X 2.03E-01 2 1
57-55-6 Glycols propylene glycol 2.00E+01 P 2 16423-43-4 Glycols propylene glycol dinitrate;1,2- 2.70E-04 A 7.71E-05 2 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
52125-53-8 Glycols propylene glycol monoethyl ether 7.00E-01 H 2 1107-98-2 Glycols propylene glycol monomethyl ether 2.00E+00 I 5.71E-01 7.00E-01 H 2 1
75-56-9 VOCs propylene oxide 3.00E-02 I 8.57E-03 3.70E-06 I 1.30E-02 2.40E-01 I 2 181335-77-5 Pesticides pursuit 2.50E+00 O 1 151630-58-1 Pesticides pydrin 2.50E-02 I 1 1
129-00-0 PAHs pyrene 3.00E-02 I 1.35E-01 3.00E+01 4.51E-04 1.08E-04 1 6.80E+04 6.80E+01 1110-86-1 VOCs pyridine 1.00E-03 I 2 1
13593-03-8 Pesticides quinalphos 5.00E-04 I 1 191-22-5 SVOCs quinoline 3.00E+00 I 2 1
13982-63-3 Radionuclides radium 226 RADIUM 226 NOTE 0.00E+00 0.00E+00 1 1unavailable23 Radionuclides radium 226 and 228 RADIUM 226 & 228 NOTES 0.00E+00 0.00E+00 1 1
121-82-4 Explosives rdx 4.00E-03 I 8.00E-02 I 1 1E715557 Fibers REFRACTORY CERAMIC FIBERS REFRACTORY FIBER NOTE 3.00E+04 A 1 1
10453-86-8 Pesticides resmethrin 3.00E-02 I 1 1299-84-3 Pesticides ronnel 5.00E-02 H 1 1
83-79-4 Pesticides rotenone 4.00E-03 I 1 178-48-8 Pesticides s,s;s-tributylphosphorotrithioate 1.00E-04 O 1 1
78587-05-0 Pesticides savey 2.50E-02 I 1 1135-98-8 VOCs sec-butylbenzene 1.00E-01 X 2.65E-01 2 1
7783-00-8 Metal compounds selenious acid 5.00E-03 I 1 17782-49-2 Metals selenium and compounds 2.00E-02 C 5.71E-03 5.00E-03 I 4.80E+00 0.00E+00 0.00E+00 1 5.00E+00 5.00E+00 1
74051-80-2 Pesticides sethoxydim 1.40E-01 O 1 17440-22-4 Metals SILVER HARDNESS - DEPENDENT 5.00E-03 I 5.00E-01 0.00E+00 0.00E+00 1 8.30E+00 8.30E+00 1
506-64-9 Cyanides silver cyanide 1.00E-01 I 1 1122-34-9 Pesticides simazine 5.00E-03 I 1.20E-01 H 1 1
26628-22-8 Metal compounds sodium azide 4.00E-03 I 2 1143-33-9 Cyanides sodium cyanide 1.00E-03 I 1 1148-18-5 Metals (organometallic) sodium diethyldithiocarbamate 3.00E-02 I 2.70E-01 H 1 1
62-74-8 Metals (organometallic) sodium fluoroacetate 2.00E-05 I 1 113718-26-8 Metal compounds sodium metavanadate 1.00E-03 H 1 1
7601-89-0 Perchlorates sodium perchlorate 7.00E-04 I 1 17440-24-6 Metals strontium 6.00E-01 I 0.00E+00 0.00E+00 1 1
57-24-9 SVOCs strychnine 3.00E-04 I 1 1100-42-5 VOCs styrene 1.00E+00 I 2.86E-01 2.00E-01 I 3.10E+02 1.13E-01 5.59E-02 2 9.12E+02 9.12E-01 1
88671-89-0 Pesticides systhane 2.50E-02 I 1 11746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) TEF NOTES 4.00E-08 C 1.14E-08 3.80E+01 C 1.33E+05 7.00E-10 I 1.30E+05 C 5.00E+03 1 0.6
34014-18-1 Pesticides tebuthiuron 7.00E-02 I 1 13383-96-8 Pesticides temephos 2.00E-02 H 1 15902-51-2 Pesticides terbacil 1.30E-02 I 1 1
13071-79-9 SVOCs terbufos 2.50E-05 H 1 1886-50-0 Pesticides terbutryn 1.00E-03 I 1 1
98-06-6 VOCs tert-butylbenzene 1.00E-01 X 2.58E-01 2 15436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' 1.00E-04 I 1 1
95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- 3.00E-04 I 1 1630-20-6 VOCs tetrachloroethane;1,1,1,2- 7.40E-06 I 2.59E-02 3.00E-02 I 2.60E-02 I 4.59E-02 2 1
79-34-5 VOCs tetrachloroethane;1,1,2,2- 5.80E-05 C 2.03E-01 2.00E-02 I 2.00E-01 I 2.97E+03 5.00E+00 1.41E-02 6.96E-03 2 7.90E+01 7.90E-02 1127-18-4 VOCs TETRACHLOROETHYLENE (PCE) PCE NOTES 4.00E-02 I 1.14E-02 2.60E-07 I 9.10E-04 6.00E-03 I 2.10E-03 I 2.00E+02 3.10E+01 7.54E-01 3.98E-01 2 2.65E+02 2.65E-01 1
58-90-2 Phenols TETRACHLOROPHENOL;2,3,4,6- pH-DEPENDENT 3.00E-02 I 1 2.80E+02 2.80E-01 15216-25-1 VOCs tetrachlorotoluene;p,a,a,a,- 6.00E-05 X 2.00E+01 H 1 1
961-11-5 Pesticides tetrachlorvinphos 3.00E-02 I 2.40E-02 H 1 13689-24-5 Pesticides tetraethyl dithiopyrophosphate 5.00E-04 I 1 1
78-00-2 Metals (organometallic) tetraethyl lead 1.00E-07 I 2 1811-97-2 VOCs tetrafluoroethane;1,1,1,2- 8.00E+01 I 2.29E+01 2 1109-99-9 Furans tetrahydrofuran 2.00E+00 I 5.71E-01 9.00E-01 I 2 1
1314-32-5 Metal compounds thallic oxide 2.00E-05 S 1 1563-68-8 Metal compounds thallium acetate 1.00E-05 X 1 1
6533-73-9 Metal compounds thallium carbonate 2.00E-05 X 1 17791-12-0 Metal compounds thallium chloride 1.00E-05 X 1 1
10102-45-1 Metal compounds thallium nitrate 1.00E-05 X 1 112039-52-0 Metal compounds thallium selenite 1.00E-05 S 1 1
7446-18-6 Metal compounds thallium(I) sulfate 2.00E-05 X 1 17440-28-0 Metals thallium, soluble salts 1.00E-05 X 1.16E+02 0.00E+00 0.00E+00 1 7.10E+01 7.10E+01 1
28249-77-6 Pesticides thiobencarb 1.00E-02 I 1 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
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CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
21564-17-0 SVOCs thiocyanomethylthiobenzothiazole;2- 3.00E-02 H 1 139196-18-4 Pesticides thiofanox 3.00E-04 H 1 123564-05-8 Pesticides thiophanate-methyl 2.70E-02 O 1.20E-02 O 1 1
137-26-8 Pesticides thiram 1.50E-02 O 2 17440-31-5 Metals tin 6.00E-01 H 0.00E+00 0.00E+00 1 1
118-96-7 Explosives tnt 5.00E-04 I 3.00E-02 I 1 1108-88-3 VOCs toluene 5.00E+00 I 1.43E+00 8.00E-02 I 5.26E+02 1.07E+01 2.72E-01 1.48E-01 2 1.40E+02 1.40E-01 1
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- 1.10E-05 C 3.85E-02 3.90E-02 C 2 1584-84-9 VOCs toluene-2,4-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 2 1
91-08-7 VOCs toluene-2,6-diisocyanate 8.00E-06 C 2.29E-06 1.10E-05 C 3.85E-02 3.90E-02 C 2 195-70-5 SVOCs toluenediamine;2,5- 2.00E-04 X 1.80E-01 X 1 1
106-49-0 SVOCs toluidine;p- 4.00E-03 X 3.00E-02 P 2 18001-35-2 Pesticides toxaphene 3.20E-04 I 1.12E+00 9.00E-05 P 1.10E+00 I 7.40E-01 1.31E+04 2.46E-04 5.16E-05 1 9.58E+04 9.58E+01 1
93-72-1 Herbicides tp;2,4,5- 8.00E-03 I 1 1unavailable09 Petroleum tph, diesel range organics 1 1unavailable10 Petroleum tph, heavy oils 1 1unavailable11 Petroleum tph, mineral oils 1 1unavailable25 Petroleum tph: gasoline range organics, benzene present 1 1unavailable08 Petroleum tph: gasoline range organics, no detectable benzene 1 1
66841-25-6 Pesticides tralomethrin 7.50E-03 I 1 12303-17-5 Pesticides triallate 2.50E-02 O 7.20E-02 O 1 1
82097-50-5 Pesticides triasulfuron 1.00E-02 I 1 1615-54-3 VOCs tribromobenzene;1,2,4- 5.00E-03 I 1 1688-73-3 Organotins tributyltin 1 1
56-35-9 Organotins tributyltin oxide 3.00E-04 I 1 110025-85-1 Disinfectants trichloramine MCL FOR DISINFECTANTS 1 1
76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- 5.00E+00 P 1.43E+00 3.00E+01 I 1.25E+01 2 176-03-9 SVOCs trichloroacetic acid 2.00E-02 I 7.00E-02 I 1 1
33663-50-2 SVOCs trichloroaniline hydrochloride;2,4,6- 2.90E-02 H 1 1634-93-5 SVOCs trichloroaniline;2,4,6- 3.00E-05 X 7.00E-03 X 1 1120-82-1 VOCs trichlorobenzene;1,2,4- 2.00E-03 P 5.71E-04 1.00E-02 I 2.90E-02 P 3.00E+02 1.14E+02 5.82E-02 2.37E-02 2 1.66E+03 1.66E+00 1
71-55-6 VOCs trichloroethane;1,1,1- 5.00E+00 I 1.43E+00 2.00E+00 I 1.33E+03 5.60E+00 7.05E-01 4.19E-01 2 1.35E+02 1.35E-01 179-00-5 VOCs trichloroethane;1,1,2- 2.00E-04 X 5.71E-05 1.60E-05 I 5.60E-02 4.00E-03 I 5.70E-02 I 4.42E+03 4.50E+00 3.74E-02 1.97E-02 2 7.50E+01 7.50E-02 179-01-6 VOCs TRICHLOROETHYLENE (TCE) TCE NOTES 2.00E-03 I 5.71E-04 4.10E-06 I-M 1.44E-02 5.00E-04 I 4.60E-02 I-M 1.10E+03 1.10E+01 4.22E-01 2.39E-01 2 9.43E+01 9.43E-02 175-69-4 VOCs trichlorofluoromethane 7.00E-01 H 2.00E-01 3.00E-01 I 2.67E+00 2 195-95-4 Phenols TRICHLOROPHENOL;2,4,5- pH-DEPENDENT 1.00E-01 I 1.20E+03 1.78E-04 6.53E-05 2 1.60E+03 1.60E+00 188-06-2 Phenols TRICHLOROPHENOL;2,4,6- pH-DEPENDENT 3.10E-06 I 1.09E-02 1.00E-03 P 1.10E-02 I 8.00E+02 1.50E+02 3.19E-04 1.07E-04 2 3.81E+02 3.81E-01 193-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- 1.00E-02 I 1 1
598-77-6 VOCs trichloropropane;1,1,2- 5.00E-03 I 2 196-18-4 VOCs trichloropropane;1,2,3- 3.00E-04 I 8.57E-05 4.00E-03 I 3.00E+01 I-M 7.94E-03 2 196-19-5 VOCs trichloropropene;1,2,3- 3.00E-04 P 8.57E-05 3.00E-03 X 2 1
58138-08-2 Pesticides tridiphane 3.00E-03 I 1 1121-44-8 VOCs triethylamine 7.00E-03 I 2.00E-03 2 1
1582-09-8 Pesticides trifluralin 7.50E-03 I 7.70E-03 I 1 1unavailable13 VOCs trihalomethanes, (total) (TTHMs) TTHM NOTES 2 1
512-56-1 SVOCs trimethyl phosphate 1.00E-02 P 2.00E-02 P 2 1526-73-8 VOCs trimethylbenzene;1,2,3- 6.00E-02 I 1.71E-02 1.00E-02 I 2 1
95-63-6 VOCs trimethylbenzene;1,2,4- 6.00E-02 I 1.71E-02 1.00E-02 I 1.15E-01 2 1108-67-8 VOCs trimethylbenzene;1,3,5- 6.00E-02 I 1.71E-02 1.00E-02 I 1.10E-01 2 1
99-35-4 Explosives trinitrobenzene;1,3,5- 3.00E-02 I 1 1479-45-8 Explosives trinitrophenylmethylnitramine 2.00E-03 P 2 1
7440-61-1 Radionuclides uranium, soluble salts URANIUM, SOLUBLE SALTS 4.00E-05 A 1.14E-05 2.00E-04 A 0.00E+00 0.00E+00 1 17440-62-2 Metals vanadium 1.00E-04 A 2.86E-05 5.00E-03 S 0.00E+00 0.00E+00 1 1.00E+03 1.00E+03 11314-62-1 Metal compounds vanadium pentoxide 7.00E-06 P 2.00E-06 8.30E-03 P 2.91E+01 9.00E-03 I 1 11929-77-7 Pesticides vernam 1.00E-03 I 2 1
50471-44-8 Pesticides vinclozolin 1.20E-03 O 1 1108-05-4 VOCs vinyl acetate 2.00E-01 I 5.71E-02 1.00E+00 H 2.00E+04 2.10E-02 1.17E-02 2 5.25E+00 5.25E-03 1
75-01-4 VOCs VINYL CHLORIDE VINYL CHLORIDE NOTES 1.00E-01 I 2.86E-02 8.80E-06 I 3.08E-02 3.00E-03 I 1.50E+00 I 2.76E+03 1.17E+00 1.11E+00 8.07E-01 2 1.86E+01 1.86E-02 181-81-2 Pesticides warfarin 3.00E-04 I 2 1
8012-95-1 Petroleum white mineral oil 3.00E+00 P 1 1108-38-3 VOCs xylene;m- 1.00E-01 S 2.86E-02 2.00E-01 S 1.61E+02 3.01E-01 1.51E-01 2 1.96E+02 1.96E-01 1
95-47-6 VOCs xylene;o- 1.00E-01 S 2.86E-02 2.00E-01 S 1.78E+02 2.13E-01 1.06E-01 2 2.41E+02 2.41E-01 1106-42-3 VOCs xylene;p- 1.00E-01 S 2.86E-02 2.00E-01 S 1.85E+02 3.14E-01 1.58E-01 2 3.11E+02 3.11E-01 1
Washington State Department of Ecology - CLARC Chemical Parameters Table - August 2020 August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 194 of 218
CAS No.Chemical Data
Group Chemical NameLinks to
Important Notes
RfCInhalationReference
Concentration(mg/m3)
Source
RfDiInhalationReference
Dose(mg/kg-day)
IURInhalation Unit Risk(µg/m3)-1
Source
CPFiInhalation
Cancer PotencyFactor
(kg-day/mg)
RfDoOral
ReferenceDose
(mg/kg-day)
Source
CPFoOral
CancerPotencyFactor
(kg-day/mg)
Source
S(Aqueous Solubility)
(mg/L)
BCF(Bioconcen-
tration Factor) (L/kg)
Hcc(Henry's Law
Constant) 25 degrees C
(unitless)
Hcc(Henry's Law
Constant @ 13 degrees C) (unitless)
INH(Ground Water
Inhalation Correction
Factor)(unitless)
Kd(Distribution
Factor for metals) (L/kg)
Koc(Soil Organic
Carbon-Water Partitioning Coefficient)
(L/kg)
Kd(Distribution
Factor for metals andorganics)
(L/kg)
AB1GI
Absorption
Fraction(unitless)
1330-20-7 VOCs xylenes 1.00E-01 I 2.86E-02 2.00E-01 I 1.71E+02 2.79E-01 1.38E-01 2 2.33E+02 2.33E-01 17440-66-6 Metals ZINC HARDNESS - DEPENDENT 3.00E-01 I 4.70E+01 0.00E+00 0.00E+00 1 6.20E+01 6.20E+01 1
557-21-1 Cyanides zinc cyanide 5.00E-02 I 1 11314-84-7 Metal compounds zinc phosphide 3.00E-04 I 1 1
12122-67-7 Pesticides zineb 5.00E-02 I 1 1
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 195 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
83-32-9 PAHs acenaphthene I Hepatic Hepatotoxicity30560-19-1 Pesticides acephate O Nervous Inhibition of brain ChE
75-07-0 VOCs acetaldehyde I
34256-82-1 Pesticides acetochlor I Hematologic, Hepatic, Nervous, Reproductive, UrinarySalivation, increased ALT and ornithine carbamyl transferase; significant increases in triglyceride and decreased blood glucose levels; histopathological changes in kidneys and testes of males
67-64-1 VOCs acetone I Urinary Nephropathy75-05-8 VOCs acetonitrile I
62476-59-9 Herbicides acifluorfen, sodium I Developmental, Other, Urinary Mortality and kidney lesions107-02-8 VOCs acrolein I Other Decreased survival
79-06-1 VOCs acrylamide I Nervous Degenerative nerve changes79-10-7 VOCs acrylic acid I Developmental Reduced pup weight
107-13-1 VOCs acrylonitrile I15972-60-8 Pesticides alachlor I Hematologic, Other Hemosiderosis, hemolytic anemia
116-06-3 Pesticides (Carbamate) aldicarb I Nervous Sweating as clinical sign of AChe inhibition1646-88-4 Pesticides (Carbamate) aldicarb sulfone I Nervous Brain ChE inhibition in females
309-00-2 Pesticides aldrin I Hepatic Liver toxicity74223-64-6 Pesticides ally I Other Decreased body weight
107-18-6 VOCs allyl alcohol I Hepatic, Urinary Impaired renal function and increased liver and kidney weights107-05-1 VOCs allyl chloride I
67485-29-4 Pesticides amdro O Reproductive Testicular effects834-12-8 Pesticides ametryn I Hepatic Liver toxicity
33089-61-1 Pesticides amitraz I Hematologic Increased mean blood sugar concentration; slight hypothermia7664-41-7 Nutrients ammonia I7790-98-9 Perchlorates ammonium perchlorate I Endocrine Radioactive iodide uptake inhibition (RAIU) in the thyroid7773-06-0 Pesticides ammonium sulfamate I Other Decrease in body weight
62-53-3 SVOCs aniline I7440-36-0 Metals antimony I Hematologic, Other Longevity, blood glucose, and cholesterol1309-64-4 Metal compounds antimony trioxide I
74115-24-5 Pesticides apollo I Endocrine, Hepatic Liver effects; organ weight changes12674-11-2 PCBs aroclor 1016 I Developmental Reduced birth weights
11097-69-1 PCBs aroclor 1254 I Dermal, Immune, OcularOcular exudate, inflamed and prominent Meibomian glands, distorted growth of finger and toe nails; decreased antibody (IgG and IgM) response to sheep erythrocytes
7440-38-2 Metals arsenic, inorganic I Cardiovascular, Dermal Hyperpigmentation, keratosis and possible vascular complications
7784-42-1 Gases arsine I1332-21-4 Fibers asbestos I
76578-14-8 Pesticides assure I Hepatic Liver cell enlargement3337-71-1 Pesticides asulam O Endocrine Changes in the adrenal medulla and in thyroid follicular cells1912-24-9 Pesticides atrazine I Other Decreased body weight gain
65195-55-3 Pesticides avermectin B1 I DevelopmentalIncreased retinal folds in weanlings, decreased viability and lactation indices, decreased pup body weight, increase of dead pups at birth
7440-39-3 Metals barium and compounds I Urinary Nephropathy114-26-1 Pesticides baygon I Nervous Mild cholinergic symptoms and RBD ChE inhibition
43121-43-3 Pesticides bayleton O Nervous Hyperactivity
68359-37-5 Pesticides baythroid I Other, Urinary Decreased body weights in males, inflammatory foci in kidneys of females1861-40-1 Pesticides benefin O Urinary Histopathologic lesions in the kidney
17804-35-2 Pesticides benomyl I Developmental Decreased pup weanling weights25057-89-0 Herbicides bentazon I Hematologic Blood loss into the gastrointestinal tract; coagulation defect in male and female dogs
100-52-7 SVOCs benzaldehyde I Gastrointestinal, Urinary Forestomach lesions, kidney toxicity71-43-2 VOCs benzene I Immune Decreased lymphocyte count92-87-5 SVOCs benzidine I Hepatic, Nervous Brain cell vacuolization; liver cell alterations in females
50-32-8 cPAHs benzo[a]pyrene I Developmental, Immune, ReproductiveNeurobehavioral changes. Decreased thymus weight and serum IgM. Decreased ovarian follicles and ovary weight
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 196 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
7440-41-7 Metals beryllium I Gastrointestinal Small intestinal lesions91-58-7 PAHs beta-chloronaphthalene I Hepatic, Other, Respiratory Dyspnea, abnormal appearance, liver enlargement
141-66-2 Pesticides bidrin O Nervous Inhibition of brain ChE82657-04-3 Pesticides biphenthrin I Nervous Tremors
92-52-4 PAHs biphenyl;1,1- I Urinary Renal papillary mineralization in male F344 rats108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether I Hematologic Decrease in hemoglobin and possible erythrocyte destruction117-81-7 Phthalates bis(2-ethylhexyl) phthalate I Hepatic Increased relative liver weight
80-05-7 Phenols bisphenol a I Other Reduced mean body weight7440-42-8 Metals boron I Developmental Decreased fetal weight (developmental)
15541-45-4 Pesticides bromate I Urinary Renal effects: urothelial hyperplasia108-86-1 VOCs bromobenzene I Hepatic Hepatocellular cytomegaly in male B6CF1 mice
75-27-4 VOCs bromodichloromethane I Urinary Renal cytomegaly593-60-2 VOCs bromoethene I
75-25-2 VOCs bromoform I Hepatic Hepatic lesions
74-83-9 VOCs bromomethane I Gastrointestinal Epithelial hyperplasia of the forestomach
1689-84-5 Pesticides bromoxynil O Hepatic, Hematologic, OtherIncreased liver weights, decreased erythrocytes/hemoglobin/packed cell volume, increased incidences of salivation, panting, liquid feces and pale gums
1689-99-2 Pesticides bromoxynil octanoate O Hepatic, Hematologic, OtherIncreased liver weights, decreased erythrocytes/hemoglobin/packed cell volume, increased incidences of salivation, panting, liquid feces and pale gums
106-99-0 VOCs butadiene;1,3- I71-36-3 VOCs butanol;n- I Nervous Hypoactivity and ataxia85-68-7 Phthalates butyl benzyl phthalate I Hepatic Significantly increased liver-to-body weight and liver-to-brain weight ratios
2008-41-5 Pesticides butylate I Hepatic Increased relative liver weight in male dogs94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- O Hepatic, Urinary Liver and kidney toxicity
7440-43-9 Metals cadmium (potable groundwater & surface water) I Urinary Significant proteinuria7440-43-9a Metals cadmium (soil & nonpotable surface water) I Urinary Significant proteinuria
105-60-2 SVOCs caprolactam I Developmental Reduced offspring body weight2425-06-1 Pesticides captafol I Urinary Kidney and bladder toxicity
133-06-2 Pesticides captan I Other Decreased mean body weights63-25-2 Pesticides (Carbamate) carbaryl I Hepatic, Urinary Kidney and liver toxicity
1563-66-2 Pesticides (Carbamate) carbofuran I Nervous, Reproductive RBC and plasma cholinesterase inhibition, and testicular and uterine effects75-15-0 VOCs carbon disulfide I Developmental Fetal toxicity/ malformations56-23-5 VOCs carbon tetrachloride I Hepatic Elevated serum SDH activity
55285-14-8 Pesticides carbosulfan I Other Decreased body weight5234-68-4 Pesticides carboxin I Other Reduced weight gain, organ weight changes, increased mortality
1306-38-3 Metals cerium oxide and cerium compounds I302-17-0 VOCs chloral hydrate I Gastrointestinal, Nervous CNS depression and GI irritation in humans133-90-4 Herbicides chloramben I Hepatic Hepatocyte degeneration
12789-03-6 Pesticides chlordane I Hepatic Hepatic necrosis143-50-0 Pesticides chlordecone (kepone) I Urinary Renal lesions (glomerulosclerosis) in female Wistar rats
90982-32-4 Pesticides chlorimuron-ethyl O Hematologic, Hepatic, Immune, ReproductiveIncreased hematocrit, hemoglobin, and erythrocyte counts. Increased liver weights. Atrophy of the thymus and prostate.
506-77-4 Cyanides chlorine cyanide I Endocrine, Nervous, Other Weight loss, thyroid effects, and myelin degeneration10049-04-4 VOCs chlorine dioxide I Developmental, Nervous Neurodevelopmental effects
7758-19-2 Nutrients chlorite I Developmental, Nervous Neurodevelopmental effects
126-99-8 VOCs chloro-1,3-butadiene;2- I532-27-4 SVOCs chloroacetophenone;2- I106-47-8 SVOCs chloroaniline;p- I Immune Nonneoplastic lesions of splenic capsule108-90-7 VOCs chlorobenzene I Hepatic Histopathologic changes in liver
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 197 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
510-15-6 Pesticides chlorobenzilate I Nervous, OtherDecreased stool quantity, food consumption and body weight gains hyperirritability (maternal effects)
75-45-6 VOCs chlorodifluoromethane I67-66-3 VOCs chloroform I Hepatic Moderate/marked fatty cyst formation in the liver and elevated SGPT74-87-3 VOCs chloromethane I95-57-8 Phenols chlorophenol;2- I Reproductive Reproductive effects
1897-45-6 Pesticides chlorothalonil I Urinary Renal tubular epithelial vacuolation95-49-8 VOCs chlorotoluene;o- I Other Decrease in body weight gain
101-21-3 Pesticides chlorpropham O Endocrine Thyroid toxicity64902-72-3 Pesticides chlorsulfuron O Other Decreased body weights and body weight gains.
18540-29-9 Metals chromium (VI) I544-92-3 Cyanides copper cyanide I Hepatic, Other, Urinary Decreased body and organ weights, histopathologic alterations in liver and kidney108-39-4 Phenols cresol;m- I Nervous Decreased body weights and neurotoxicity
95-48-7 Phenols cresol;o- I Nervous, Other Decreased body weights and neurotoxicity
98-82-8 VOCs cumene I Urinary Increased average kidney weight in female rats506-68-3 Cyanides cyanogen bromide I Endocrine, Nervous, other Weight loss, thyroid effects and myelin degeneration110-82-7 VOCs cyclohexane I108-94-1 VOCs cyclohexanone I Other Body weight depression108-91-8 VOCs cyclohexylamine I Reproductive Testicular damage
68085-85-8 Pesticides cyhalothrin/karate O Other Gait abnormality52315-07-8 Pesticides cypermethrin O Nervous Decreases in motor and locomotor activity66215-27-8 Pesticides cyromazine O Other Decreased body weight and decreased food efficiency
1861-32-1 Herbicides dacthal I Endocrine, Hepatic, Ocular, Respiratory, UrinaryEffects on the lungs, liver, kidney, thyroid and thyroid hormones in males and females and eyes of females
75-99-0 Herbicides dalapon, sodium salt I Urinary Increased kidney body weight ratio39515-41-8 Pesticides danitol I Nervous Tremors
94-82-6 Herbicides db;2,4- O Other Decreased body weight gain and food consumption50-29-3 Pesticides ddt I Hepatic Liver lesions
1163-19-5 PBDEs decabromodiphenyl ether I Nervous Neurobehavioral effects8065-48-3 Pesticides demeton I Nervous ChE inhibition, optic nerve degeneration
103-23-1 Phthalates di(2-ethylhexyl)adipate IDevelopmental, Hepatic, Musculoskeletal, Other, Urinary
Changes in body weight and liver weight increased liver weight of male and female parents reduced ossification and slightly dilated ureters in fetuses reduced offspring weight gain, total litter weight, and litter size
96-12-8 Pesticides dibromo-3-chloropropane;1,2- I106-37-6 Pesticides dibromobenzene;1,4- I Hepatic Liver/body weight ratio and hepatic microsomal enzyme induction124-48-1 VOCs dibromochloromethane I Hepatic Hepatic lesions
84-74-2 Phthalates di-butyl phthalate I Other Increased mortality1918-00-9 Herbicides dicamba I Developmental, Other Maternal (reduced weight gain) and fetal toxicity
79-43-6 SVOCs dichloroacetic acid I Hepatic, Nervous, Reproductive Lesions observed in the testes, cerebrum, cerebellum, and liver.106-46-7 VOCs dichlorobenzene;1,4- I
75-71-8 VOCs dichlorodifluoromethane I Other Reduced body weight75-35-4 VOCs dichloroethylene;1,1- I Hepatic Liver toxicity (fatty change)
156-59-2 VOCs dichloroethylene;1,2-,cis I Urinary Increased relative kidney weight in male rats
156-60-5 VOCs dichloroethylene;1,2-,trans I ImmuneDecrease in number of antibody forming cells (AFCs) against sheep red blood cells (sRBCs) in male mice
120-83-2 Phenols dichlorophenol;2,4- I Immune Decreased delayed hypersensitivity response94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- I Hematologic, Hepatic, Urinary Hematologic, hepatic and renal toxicity78-87-5 VOCs dichloropropane;1,2- I
616-23-9 SVOCs dichloropropanol;2,3- I Cardiovascular, Hepatic, Urinary Myocardial degeneration, hepatotoxicity and nephrotoxicity542-75-6 VOCs dichloropropene;1,3- I Gastrointestinal Chronic irritation
62-73-7 Pesticides dichlorvos I Nervous Plasma and RBC ChE inhibition in males and females brain ChE inhibition in males60-57-1 Pesticides dieldrin I Hepatic Liver lesions84-66-2 Phthalates diethyl phthalate I Other Decreased growth rate, food consumption and altered organ weights
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 198 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
43222-48-6 Pesticides difenzoquat O Other Decreases in body weight and body weight gain35367-38-5 Pesticides diflubenzuron I Hematologic Methemoglobin and sulfhemoglobin formation
55290-64-7 Pesticides dimethipin OHepatic, Urinary, Respiratory, Reproductive, Gastrointestinal, Cardiovascular
Liver and kidney toxicity, toxicity in the lungs, testes, duodenum, glandular stomach, heart, and aortic artery
60-51-5 Pesticides dimethoate O Nervous Brain ChE inhibition120-61-6 Phthalates dimethyl terephthalate I Urinary Chronic kidney inflammation121-69-7 VOCs dimethylaniline;N,N- I Hematologic, Immune, Other Splenomegaly, increased splenic hemosiderosis and hematopoiesis
68-12-2 VOCs dimethylformamide;N,N- I
105-67-9 Phenols dimethylphenol;2,4- I Hematologic, Nervous Clinical signs (lethargy, prostration, and ataxia) and hematological changes
576-26-1 Phenols dimethylphenol;2,6- I Hepatic, Immune, Other, Urinary Body weight changes and histopathological changes of internal organs (liver, spleen and kidneys)
95-65-8 Phenols dimethylphenol;3,4- I Cardiovascular, Hepatic, Immune, Other, Urinary Changes in blood pressure and body weight histopathological changes in liver, kidney and spleen99-65-0 Explosives dinitrobenzene;m- I Immune Increased splenic weight
131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- I Ocular Cataract formation51-28-5 Phenols dinitrophenol;2,4- I Ocular Cataract formation
121-14-2 Explosives dinitrotoluene;2,4- I Hematologic, Hepatic, Nervous Neurotoxicity, Heinz bodies and biliary tract hyperplasia88-85-7 Herbicides dinoseb I Developmental Decreased fetal weight
123-91-1 VOCs dioxane;1,4- I Hepatic, Urinary Liver and kidney toxicity957-51-7 Pesticides diphenamid I Hepatic Liver toxicity
122-39-4 SVOCs diphenylamine O Urinary, Hepatic, ImmuneIncreased BUN, cholesterol, total bilirubin. Increased absolute/relative kidney, liver andspleen weights.
85-00-7 Pesticides diquat I Ocular Minimal lens opacity and cataracts298-04-4 Pesticides disulfoton I Nervous ChE inhibition, optic nerve degeneration505-29-3 SVOCs dithiane;1,4- I Nervous, Respiratory Nasal olfactory lesions330-54-1 Pesticides (Carbamate) diuron I Hematologic Abnormal pigments in blood
2439-10-3 Pesticides dodine O Other Change in body weight
115-29-7 Pesticides endosulfan I Cardiovascular, Other, UrinaryReduced body weight gain in males and females increased incidence of marked progressive glomerulonephrosis and blood vessel aneurysms in males
145-73-3 Herbicides endothall I Gastrointestinal Increased absolute and relative weights of stomach and small intestine72-20-8 Pesticides endrin I Hepatic, Nervous Mild histological lesions in liver, occasional convulsions
106-89-8 VOCs epichlorohydrin I106-88-7 VOCs epoxybutane I
16672-87-0 Pesticides ethephon I Nervous Plasma ChE inhibition563-12-2 Pesticides ethion I Nervous Plasma cholinesterase inhibition
110-80-5 VOCs ethoxyethanol;2- I141-78-6 VOCs ethyl acetate I Other Mortality and body weight loss
75-00-3 VOCs ethyl chloride I759-94-4 Pesticides ethyl dipropylthiocarbamate;S- O Other, Cardiovascular, Nervous Decreased body weight, myocardial and neuromuscular lesions
60-29-7 VOCs ethyl ether I Other Depressed body weights2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate I Nervous Neurotoxicity
100-41-4 VOCs ethylbenzene I Hepatic, Urinary Liver and kidney toxicity106-93-4 VOCs ethylene dibromide (EDB) I Endocrine, Hepatic, Reproductive Testicular atrophy, liver peliosis, and adrenal cortical degeneration107-21-1 VOCs ethylene glycol I Urinary Kidney toxicity111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) I Hematologic Hemosiderin deposition in the liver
96-45-7 SVOCs ethylene thiourea I Endocrine Increased incidence of thyroid hyperplasia84-72-0 Phthalates ethylphthalyl ethylglycolate I Urinary Kidney damage and reduced lifespan
101200-48-0 Pesticides express I Other, Urinary Elevated serum bilirubin and AST levels, increased urinary volume22224-92-6 Pesticides fenamiphos I Nervous ChE inhibition
206-44-0 PAHs fluoranthene I Hepatic, Urinary Nephropathy, increased liver weights, hematological alterations, and clinical effects86-73-7 PAHs fluorene I Hematologic Decreased RBC, packed cell volume and hemoglobin
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 199 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
16984-48-8 Nutrients fluoride I Gastrointestinal Objectionable dental fluorosis, a cosmetic effect
59756-60-4 Pesticides fluridone I Ocular, Other, Reproductive, Urinary Glomerulonephritis, atrophic testes, eye keratitis decreased body weight and organ weights
56425-91-3 Pesticides flurprimidol O HepaticIncreased incidences of focal atypia, fatty change, and hepatocellular eosinophilic change in the liver of males
66332-96-5 Pesticides flutolanil O Other Increased incidence of clinical toxic signs (vomiting, salivation, and soft stool)69409-94-5 Pesticides fluvalinate I Dermal, Other Decreases in body weight gain increase in plantar ulcer (females)
133-07-3 Pesticides folpet O Gastrointestinal Hyperkeratosis/acanthosis and ulceration/erosion of the non-glandular stomach72178-02-0 Pesticides fomesafen O Hepatic Hyalinization of the liver
944-22-9 Pesticides fonofos I Hepatic, Nervous Cholinesterase inhibition, cholinergic symptoms, and increased liver weight50-00-0 VOCs formaldehyde I Gastrointestinal, Other, Urinary Reduced weight gain, histopathology in rats
39148-24-8 Pesticides fosetyl-al O Reproductive Increased incidence of testicular degeneration110-00-9 Furans furan I Hepatic Hepatic lesions
98-01-1 VOCs furfural I Hepatic Mild hepatocellular vacuolization
77182-82-2 SVOCs glufosinate-ammonium O Nervous, Cardiovascular, DevelopmentalInhibition of brain glutamate synthetase, altered electrocardiogram and mortality, altered morphometrics in the offspring as adults
765-34-4 VOCs glycidaldehyde I Endocrine, Hematologic, Other, Urinary Weight gain retardation, enlarged adrenals, hydropic renal pelvis and hematopoietic effects1071-83-6 SVOCs glyphosate I Developmental, Urinary Increased incidence of renal tubular dilation in F3b offspring
69806-40-2 Pesticides haloxyfop-methyl I Reproductive, Urinary Reduced relative kidney weights in F0, F1, and F2b adults; reduced fertility in the F1/F2b generation79277-27-3 Pesticides harmony O Other Decreased body weight and body weight gain
76-44-8 Pesticides heptachlor I Hepatic Liver weight increases in males1024-57-3 Pesticides heptachlor epoxide I Hepatic Increased liver-to-body weight ratio in both males and females
87-82-1 SVOCs hexabromobenzene I Hepatic Induced serum carboxylesterase activity, increased relative liver weight, increased liver porphyrins68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- I Nervous Neurobehavioral effects
118-74-1 Pesticides hexachlorobenzene I Hepatic Liver effects77-47-4 Pesticides hexachlorocyclopentadiene I Gastrointestinal Chronic irritation67-72-1 VOCs hexachloroethane I Urinary Atrophy and degeneration of renal tubules70-30-4 SVOCs hexachlorophene I Gastrointestinal, Nervous Swollen salivary glands, status spongiosis in brain and optic nerve
822-06-0 VOCs hexamethylene diisocyanate;1,6- I110-54-3 VOCs hexane;n- I591-78-6 VOCs hexanone;2- I Nervous Axonal swelling of the peripheral nerve
51235-04-2 Pesticides hexazinone I Other Decreased body weight7647-01-0 VOCs hydrogen chloride I
74-90-8 Cyanides hydrogen cyanide I Reproductive Decreased cauda epididymis weight in male F344/N rats7783-06-4 VOCs hydrogen sulfide I
35554-44-0 Pesticides imazalil O Other, HepaticVomiting, soft stools, decreased body weight gain, increased liver weight, increased alkaline phosphatase
81335-37-7 Pesticides imazaquin I Hematologic, Hepatic, Immune, OtherDecreased body weight gain, skeletal myopathy, slight anemia, bone marrow hyperplasia, elevated serum SGOT, SGPT, CPK
36734-19-7 Pesticides iprodione I Hematologic, Reproductive Increased RBC Heinz bodies; decreased prostate weight78-83-1 VOCs isobutyl alcohol I Nervous Hypoactivity and ataxia78-59-1 SVOCs isophorone I Urinary Kidney pathology
33820-53-0 Pesticides isopropalin I Hematologic, Other Reduced hemoglobin concentration, lowered hematocrits, and altered organ weights
82558-50-7 Pesticides isoxaben I Cardiovascular, Hepatic, UrinaryIncreased BUN; decreased serum AP and AST; decreased food consumption efficiency; increased heart/body weight
77501-63-4 Pesticides lactofen O Urinary, EndocrineIncreased incidence of proteinaceous casts in the kidneys, decrease in thyroid and adrenal gland weight
58-89-9 Pesticides lindane I Hepatic, Urinary Liver and kidney toxicity330-55-2 Pesticides (Carbamate) linuron O Hematologic Abnormal blood pigment (met- and sulfhemoglobin levels)
83055-99-6 Pesticides londax I Hepatic Liver effects121-75-5 Pesticides malathion I Nervous RBC ChE depression
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 200 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
108-31-6 SVOCs maleic anhydride I Urinary Renal lesions123-33-1 SVOCs maleic hydrazide I Urinary Renal dysfunction
12427-38-2 Pesticides maneb I Endocrine Increased thyroid weight7439-96-5 Metals manganese I Nervous CNS effects
24307-26-4 Pesticides mepiquat chloride I Hematologic, Nervous, Other Sedation and tonoclonic spasms decreased food intake and body weights hematologic effects7487-94-7 Metal compounds mercuric chloride I Immune, Urinary Autoimmune effects (autoimmune glomerulonephritis)
7439-97-6 Metals mercury I150-50-5 Pesticides merphos I Nervous, Other Ataxia, delayed neurotoxicity and weight loss
57837-19-1 Pesticides metalaxyl I Hepatic Increased serum alkaline phosphatase levels and increased liver-to-brain weight ratio126-98-7 VOCs methacrylonitrile I Hepatic Increased SGOT and SGPT levels
10265-92-6 Pesticides methamidosphos I Nervous ChE inhibition67-56-1 VOCs methanol I Developmental Extra cervical ribs
950-37-8 Pesticides methidathion O Nervous, Hepatic Red blood cholinesterase inhibition and liver toxicity16752-77-5 Pesticides (Carbamate) methomyl I Immune, Urinary Kidney and spleen pathology
72-43-5 Pesticides methoxychlor I Developmental Excessive loss of litters109-86-4 VOCs methoxyethanol;2- I
78-93-3 VOCs methyl ethyl ketone I Developmental Decreased pup body weight
108-10-1 VOCs methyl isobutyl ketone I22967-92-6 Metals (organometallic) methyl mercury I Developmental, Nervous Developmental neuropsychological impairment
80-62-6 VOCs methyl methacrylate I91-57-6 PAHs methyl naphthalene;2- I Respiratory Pulmonary alveolar proteinosis
298-00-0 Pesticides methyl parathion I Hematologic, Nervous RBC, ChE inhibition; reduced hemoglobin, hematocrit and RBCs
1634-04-4 VOCs methyl tert-butyl ether I94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- I Hepatic, Urinary Kidney and liver toxicity75-09-2 VOCs methylene chloride I Hepatic Hepatic effects (hepatic vacuolation, liver foci)
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) I51218-45-2 Pesticides metolachlor I Other, Reproductive Decreased body weight gain, decreased pup weight and parental food consumption21087-64-9 Pesticides metribuzin I Hepatic, Other, Urinary Liver and kidney effects, decreased body weight, mortality
2385-85-5 Pesticides mirex I Endocrine, Hepatic Liver cytomegaly, fatty metamorphosis, angiectasis; thyroid cystic follicles2212-67-1 Pesticides molinate I Reproductive Reproductive toxicity7439-98-7 Metals molybdenum I Urinary Increased uric acid levels
300-76-5 Pesticides naled I Nervous Brain ChE inhibition
91-20-3 PAHs naphthalene I Other Decreased mean terminal body weight in males15299-99-7 Pesticides napropamide O Other, Hepatic Decreased weight gain and increased incidence of liver lesions
7440-02-0 Metals nickel soluble salts I Other Decreased body and organ weights
14797-55-8 Nutrients nitrate I Hematologic Early clinical signs of methemoglobinemia in excess of 10% (0-3 months old infants formula)14797-65-0 Nutrients nitrite I Hematologic Methemoglobinemia
98-95-3 Explosives nitrobenzene I Hematologic Increased methemoglobin levels
556-88-7 SVOCs nitroguanidine I Developmental, OtherReduced weight gain in female rats, maternal/ fetal toxicity in rats, and equivocal evidence of developmental toxicity in rabbits
79-46-9 VOCs nitropropane;2- I27314-13-2 Pesticides norflurazon O Hepatic Increased liver weight, increased cholesterol
85509-19-9 Herbicides nustar O Hepatic, Hematologic
Increased liver weights and hypertrophy of centrilobular hepatocytes, hepatocytic vacuolation, increased alkaline phosphatase, decreased cholesterol and total serum protein, and increased white blood cells.
32536-52-0 PBDEs octabromodiphenyl ether I Hepatic Induction of hepatic enzymes; liver histopathology2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine I Hepatic Hepatic lesions
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 201 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
19044-88-3 Pesticides oryzalin O Other, hematologic, endocrineDecreased body weight gain, decreased hematology parameters, and increased microscopic findings in the thyroid
19666-30-9 Pesticides oxadiazon I Hematologic, Hepatic Increased levels of serum proteins and increased liver weights23135-22-0 Pesticides (Carbamate) oxamyl I Other Decreased body weight gain and food consumption42874-03-3 Pesticides oxyfluorfen O Hepatic Liver toxicity
76738-62-0 Herbicides paclobutrazol I HepaticElevated liver weights, serum cholesterol, hepatic aminopyrine N-demethylase activity, and alanine transaminase levels
1910-42-5 Pesticides Paraquat Dichloride I Respiratory Chronic pneumonitis40487-42-1 Pesticides pendimethalin O Endocrine Hormonal and histopathological changes in the thyroid60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- I Nervous Neurobehavioral effects32534-81-9 PBDEs pentabromodiphenyl ethers I Hepatic Induction of hepatic enzymes
608-93-5 SVOCs pentachlorobenzene I Hepatic, Urinary Liver and kidney toxicity82-68-8 Pesticides pentachloronitrobenzene I Hepatic Liver toxicity87-86-5 Herbicides pentachlorophenol I Hepatic Hepatotoxicity
52645-53-1 Pesticides permethrin I Hepatic Increased liver weights
13684-63-4 Pesticides phenmedipham O Hematologic, Other, UrinaryHemolytic anemia, decreased body weight/body weight gain & food efficiency, increased renal pelvic epithelial hyperplasia and mineralization
108-95-2 Phenols phenol I Other Decreased maternal weight gain
108-45-2 SVOCs phenylenediamine;m- I Hepatic Increased relative and absolute liver weights and degenerative liver lesions62-38-4 Metals (organometallic) phenylmercuric acetate I Urinary Renal damage75-44-5 VOCs phosgene I
732-11-6 Pesticides phosmet I Hepatic, Nervous, Other Reduced body weight (males), liver cell vacuolation, cholinesterase inhibition7803-51-2 Gases phosphine I7664-38-2 SVOCs phosphoric acid I7723-14-0 Nonmetal inorganics phosphorus I Dermal, Reproductive Parturition mortality; forelimb hair loss
85-44-9 Phthalates phthalic anhydride I Respiratory, Urinary Lung and kidney histopathology1918-02-1 Herbicides picloram I Hepatic Increased liver weights
29232-93-7 Pesticides pirimiphos-methyl O Nervous Plasma cholinesterase inhibition (ChEI)67747-09-5 Pesticides prochloraz (not in HSDB) I Hepatic Increase in SAP and liver weights, liver histopathology
7287-19-6 Pesticides prometryn O Hepatic, Urinary, Hematologic, Immune Liver and kidney degeneration and bone marrow atrophy1918-16-7 Pesticides propachlor I Hepatic, Other Decreased weight gain, food consumption increased relative liver weights
709-98-8 Pesticides propanil I Immune Increased relative spleen weight in females2312-35-8 Pesticides propargite O Other Decreased body weight/body weight gain and increased mortality
107-19-7 VOCs propargyl alcohol I Hepatic, Urinary Renal and hepatotoxicity139-40-2 Pesticides propazine I Other Decrease in body weight122-42-9 Pesticides propham I Immune, Nervous Increase in male spleen weight and ChE depression in females
60207-90-1 Pesticides propiconazole O Hepatic Increased liver weight and liver lesions123-38-6 VOCs propionaldehyde I
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- I Urinary Increased absolute and relative kidney weights107-98-2 Glycols propylene glycol monomethyl ether I
75-56-9 VOCs propylene oxide I81335-77-5 Pesticides pursuit O Hematologic Significant changes in the hematological parameters51630-58-1 Pesticides pydrin I Nervous Neurological dysfunction
129-00-0 PAHs pyrene I Urinary Kidney effects (renal tubular pathology, decreased kidney weights)110-86-1 VOCs pyridine I Hepatic Increased liver weight121-82-4 Explosives rdx I Reproductive Inflammation of the prostate
10453-86-8 Pesticides resmethrin I Reproductive Reproductive toxicity83-79-4 Pesticides rotenone I Developmental Reduced pup weight78-48-8 Pesticides s,s;s-tributylphosphorotrithioate O Nervous Plasma ChE inhibition
78587-05-0 Pesticides savey I Endocrine, Hematologic Hypertrophy of adrenal cortex (both sexes) hematologic effects (males)7783-00-8 Metal compounds selenious acid I Dermal, Hematologic, Nervous Clinical selenosis7782-49-2 Metals selenium and compounds I Dermal, Hematologic, Nervous Clinical selenosis
74051-80-2 Pesticides sethoxydim O Hepatic Liver effects including hepatocellular hypertrophy and fatty degeneration
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 202 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
7440-22-4 Metals silver I Dermal Argyria506-64-9 Cyanides silver cyanide I Endocrine, Nervous, Other Weight loss, thyroid effects, and myelin degeneration122-34-9 Pesticides simazine I Hematologic, Other Reduction in weight gains hematological changes in females
26628-22-8 Metal compounds sodium azide I Other Clinical sign (e.g., hunched postures) and reduced body weight148-18-5 Metals (organometallic) sodium diethyldithiocarbamate I Other Reduced body weight
62-74-8 Metals (organometallic) sodium fluoroacetate I Cardiovascular, ReproductiveIncreased heart weight in females and males; decreased testis weight and altered spermatogenesis in males.
7440-24-6 Metals strontium I Musculoskeletal Rachitic bone57-24-9 SVOCs strychnine I Other Toxicity/histopathology
100-42-5 VOCs styrene I Hematologic, Hepatic Red blood cell and liver effects88671-89-0 Pesticides systhane I Reproductive Testicular atrophy
1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) I Developmental, Endocrine, Reproductive Decreased sperm count and motility in men exposed to TCDD as boys / Increased TSH in neonates34014-18-1 Pesticides tebuthiuron I Other Depressed body weight gain in F1 females
5902-51-2 Pesticides terbacil I Endocrine, Hepatic Increase in thyroid/body weight ratio; slight increase in liver weights; elevated alkaline phosphatase886-50-0 Pesticides terbutryn I Hematologic Hematologic effects in females
5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' I Nervous Neurobehavioral effects95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- I Urinary Kidney lesions
630-20-6 VOCs tetrachloroethane;1,1,1,2- I Hepatic, Urinary Mineralization of the kidneys in males, hepatic clear cell change in females79-34-5 VOCs tetrachloroethane;1,1,2,2- I Hepatic Increased relative liver weight in rats
127-18-4 VOCs tetrachloroethylene (PCE) I Nervous, Ocular Reaction time/cognitive effects and effects to vision in occupationally-exposed adults. 58-90-2 Phenols tetrachlorophenol;2,3,4,6- I Hepatic Increased liver weights and centrilobular hypertrophy
961-11-5 Pesticides tetrachlorvinphos I Hepatic, Nervous, Other, Urinary Reduced body weight gain, increased liver and kidney weights, and RBC ChE inhibition3689-24-5 Pesticides tetraethyl dithiopyrophosphate I Nervous Depressed RBC and plasma cholinesterase activity
78-00-2 Metals (organometallic) tetraethyl lead I Hepatic, Immune Histopathology of liver and thymus811-97-2 VOCs tetrafluoroethane;1,1,1,2- I109-99-9 Furans tetrahydrofuran I Developmental Decreased pup body weight gain
28249-77-6 Pesticides thiobencarb I Other, Urinary Decrease in body weight, increase in BUN
23564-05-8 Pesticides thiophanate-methyl O Endocrine, Other Thyroid effects and decreased body weight
137-26-8 Pesticides thiram O Hematologic, Hepatic, OtherChanges in hematology, clinical chemistry, incidences of bile duct hyperplasia, and reduction in mean body-weight
118-96-7 Explosives tnt I Hepatic Liver effects108-88-3 VOCs toluene I Urinary Increased kidney weight
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- I93-72-1 Herbicides tp;2,4,5- I Hepatic Histopathological changes in liver
66841-25-6 Pesticides tralomethrin I Other Decreased body weight gain in males increased food and water consumption in males and females2303-17-5 Pesticides triallate O Other, Endocrine Decreased survival, decreased body weight, increased adrenal weight
82097-50-5 Pesticides triasulfuron I Hepatic Centrilobular hepatocytomegaly in males615-54-3 VOCs tribromobenzene;1,2,4- I Hepatic Increased liver-to-body weight ratio and hepatic microsomal enzyme induction
56-35-9 Organotins tributyltin oxide I Immune Immunosuppression76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- I Nervous Psychomotor impairment76-03-9 SVOCs trichloroacetic acid I Hepatic Hepatocellular necrosis
120-82-1 VOCs trichlorobenzene;1,2,4- I Endocrine Increased adrenal weights; vacuolization of zona fasciculata in the cortex71-55-6 VOCs trichloroethane;1,1,1- I Other Reduced body weight
79-00-5 VOCs trichloroethane;1,1,2- I Hematologic, Immune Clinical serum chemistry (effects on erythrocytes and depressed humoral immune status)
79-01-6 VOCs trichloroethylene (TCE) I Developmental, ImmuneDecreased plaque-forming cell and increased delayed-type hypersensitivity, decreased thymus weight, fetal heart malformations
75-69-4 VOCs trichlorofluoromethane I Cardiovascular, Other, Respiratory Survival and histopathology (pleuritis and pericarditis)95-95-4 Phenols trichlorophenol;2,4,5- I Hepatic, Urinary Liver and kidney pathology93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- I Urinary Increased urinary coproporphyrins
598-77-6 VOCs trichloropropane;1,1,2- I Endocrine, Hepatic, Urinary Mild lesions in liver, kidney and thyroid
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 203 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
Noncancer Organ/System AffectedOral Ingestion Route
see IRIS descriptions
Noncancer Critical EffectOral Ingestion Route
96-18-4 VOCs trichloropropane;1,2,3- I Hepatic Increased absolute liver weight in male rats58138-08-2 Pesticides tridiphane I Other, Reproductive Decreased fertility index and depressed body weight of dams
121-44-8 VOCs triethylamine I1582-09-8 Pesticides trifluralin I Hematologic, Hepatic Increased liver weights; increase in methemoglobin
526-73-8 VOCs trimethylbenzene;1,2,3- I Nervous Decreased pain sensitivity in male Wistar rats95-63-6 VOCs trimethylbenzene;1,2,4- I Nervous Decreased pain sensitivity in male Wistar rats
108-67-8 VOCs trimethylbenzene;1,3,5- I Nervous Decreased pain sensitivity in male Wistar rats99-35-4 Explosives trinitrobenzene;1,3,5- I Hematologic Methemoglobinemia and spleen-erythroid cell hyperplasia
unavailable12 Radionuclides uranium, soluble salts A Urinary Renal toxicity1314-62-1 Metal compounds vanadium pentoxide I Dermal Decreased hair cystine1929-77-7 Pesticides vernam I Other Decreased body weight
50471-44-8 Pesticides vinclozolin O Repiratory, Hepatic, Reproductive, Ocular Histopathological lesions in the lungs, liver, ovaries, eyes108-05-4 VOCs vinyl acetate I
75-01-4 VOCs vinyl chloride I Hepatic Liver cell polymorphism81-81-2 Pesticides warfarin I Hematologic Increased prothrombin time
1330-20-7 VOCs xylenes I Other Decreased body weight, increased mortality
7440-66-6 Metals zinc I Hematologic, ImmuneDecreases in erythrocyte Cu, Zn-superoxide dismutase (ESOD) activity in healthy adult male and female volunteers
557-21-1 Cyanides zinc cyanide I Endocrine, Nervous, Other Weight loss, thyroid effects, and myelin degeneration1314-84-7 Metal compounds zinc phosphide I Other Reduction of food intake and body weight
12122-67-7 Pesticides zineb I Endocrine Thyroid hyperplasia
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 204 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
83-32-9 PAHs acenaphthene I30560-19-1 Pesticides acephate O
75-07-0 VOCs acetaldehyde I
34256-82-1 Pesticides acetochlor I67-64-1 VOCs acetone I75-05-8 VOCs acetonitrile I
62476-59-9 Herbicides acifluorfen, sodium I107-02-8 VOCs acrolein I
79-06-1 VOCs acrylamide I79-10-7 VOCs acrylic acid I
107-13-1 VOCs acrylonitrile I15972-60-8 Pesticides alachlor I
116-06-3 Pesticides (Carbamate) aldicarb I1646-88-4 Pesticides (Carbamate) aldicarb sulfone I
309-00-2 Pesticides aldrin I74223-64-6 Pesticides ally I
107-18-6 VOCs allyl alcohol I107-05-1 VOCs allyl chloride I
67485-29-4 Pesticides amdro O834-12-8 Pesticides ametryn I
33089-61-1 Pesticides amitraz I7664-41-7 Nutrients ammonia I7790-98-9 Perchlorates ammonium perchlorate I7773-06-0 Pesticides ammonium sulfamate I
62-53-3 SVOCs aniline I7440-36-0 Metals antimony I1309-64-4 Metal compounds antimony trioxide I
74115-24-5 Pesticides apollo I12674-11-2 PCBs aroclor 1016 I
11097-69-1 PCBs aroclor 1254 I7440-38-2 Metals arsenic, inorganic I7784-42-1 Gases arsine I1332-21-4 Fibers asbestos I
76578-14-8 Pesticides assure I3337-71-1 Pesticides asulam O1912-24-9 Pesticides atrazine I
65195-55-3 Pesticides avermectin B1 I7440-39-3 Metals barium and compounds I
114-26-1 Pesticides baygon I43121-43-3 Pesticides bayleton O68359-37-5 Pesticides baythroid I
1861-40-1 Pesticides benefin O17804-35-2 Pesticides benomyl I25057-89-0 Herbicides bentazon I
100-52-7 SVOCs benzaldehyde I71-43-2 VOCs benzene I92-87-5 SVOCs benzidine I
50-32-8 cPAHs benzo[a]pyrene I
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Nervous, Respiratory Degeneration of olfactory epithelium
Other Mortality
Respiratory Nasal lesionsNervous Degenerative nerve changesNervous, Respiratory Degeneration of the nasal olfactory epithelium
RespiratoryDegeneration and inflammation of nasal respiratory epithelium; hyperplasia of mucous secreting cells
Nervous Functional and histological peripheral neurotoxicity
Respiratory Decreased lung function and respiratory symptoms
Hematologic Methemoglobin increase, spleen toxicity
Respiratory Pulmonary toxicity, chronic interstitial inflammation
Hematologic, Immune Increased hemolysis, abnormal RBC morphology, and increased spleen weightRespiratory Localized pleural thickening
Immune Decreased lymphocyte count
Developmental, Reproductive Decreased embryo/fetal survival, Reduced ovulation rate and ovary weight
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 205 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
7440-41-7 Metals beryllium I91-58-7 PAHs beta-chloronaphthalene I
141-66-2 Pesticides bidrin O82657-04-3 Pesticides biphenthrin I
92-52-4 PAHs biphenyl;1,1- I108-60-1 VOCs bis(2-chloro-1-methyl-ethyl)ether I117-81-7 Phthalates bis(2-ethylhexyl) phthalate I
80-05-7 Phenols bisphenol a I7440-42-8 Metals boron I
15541-45-4 Pesticides bromate I108-86-1 VOCs bromobenzene I
75-27-4 VOCs bromodichloromethane I593-60-2 VOCs bromoethene I
75-25-2 VOCs bromoform I74-83-9 VOCs bromomethane I
1689-84-5 Pesticides bromoxynil O
1689-99-2 Pesticides bromoxynil octanoate O106-99-0 VOCs butadiene;1,3- I
71-36-3 VOCs butanol;n- I85-68-7 Phthalates butyl benzyl phthalate I
2008-41-5 Pesticides butylate I94-81-5 Pesticides butyric acid;4-(2-methyl-4-chlorophenoxy)- O
7440-43-9 Metals cadmium (potable groundwater & surface water) I7440-43-9a Metals cadmium (soil & nonpotable surface water) I
105-60-2 SVOCs caprolactam I2425-06-1 Pesticides captafol I
133-06-2 Pesticides captan I63-25-2 Pesticides (Carbamate) carbaryl I
1563-66-2 Pesticides (Carbamate) carbofuran I75-15-0 VOCs carbon disulfide I56-23-5 VOCs carbon tetrachloride I
55285-14-8 Pesticides carbosulfan I5234-68-4 Pesticides carboxin I
1306-38-3 Metals cerium oxide and cerium compounds I302-17-0 VOCs chloral hydrate I133-90-4 Herbicides chloramben I
12789-03-6 Pesticides chlordane I143-50-0 Pesticides chlordecone (kepone) I
90982-32-4 Pesticides chlorimuron-ethyl O506-77-4 Cyanides chlorine cyanide I
10049-04-4 VOCs chlorine dioxide I7758-19-2 Nutrients chlorite I
126-99-8 VOCs chloro-1,3-butadiene;2- I532-27-4 SVOCs chloroacetophenone;2- I106-47-8 SVOCs chloroaniline;p- I108-90-7 VOCs chlorobenzene I
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Immune, Respiratory Beryllium sensitization and progression to CBD
Hepatic Hepatocellular cytomegaly in female B6C3F1 mice
Hepatic Hypertrophy, basophilic and eosinophilic foci, in the liver
Nervous, Respiratory Degenerative and proliferative lesions of the olfactory epithelium of the nasal cavity
Reproductive Ovarian atrophy
Nervous Peripheral nervous system dysfunctionHepatic Fatty changes in the liver
RespiratoryIncreased incidence of alveolar epithelial hyperplasia in the lungs of male and female rats
Hepatic Hepatic effects
Cardiovascular, Respiratory Vascular congestion and peribronchial edema
Immune, Nervous, Respiratory
Increase in incidence of olfactory atrophy, alveolar hyperplasia, and splenic hematopoietic proliferation in male F344/N rats, female F344/N rats, and female B6C3F1 mice, respectively
Respiratory Squamous hyperplasia of the nasal respiratory epithelium
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 206 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
510-15-6 Pesticides chlorobenzilate I75-45-6 VOCs chlorodifluoromethane I67-66-3 VOCs chloroform I74-87-3 VOCs chloromethane I95-57-8 Phenols chlorophenol;2- I
1897-45-6 Pesticides chlorothalonil I95-49-8 VOCs chlorotoluene;o- I
101-21-3 Pesticides chlorpropham O64902-72-3 Pesticides chlorsulfuron O
18540-29-9 Metals chromium (VI) I544-92-3 Cyanides copper cyanide I108-39-4 Phenols cresol;m- I
95-48-7 Phenols cresol;o- I
98-82-8 VOCs cumene I506-68-3 Cyanides cyanogen bromide I110-82-7 VOCs cyclohexane I108-94-1 VOCs cyclohexanone I108-91-8 VOCs cyclohexylamine I
68085-85-8 Pesticides cyhalothrin/karate O52315-07-8 Pesticides cypermethrin O66215-27-8 Pesticides cyromazine O
1861-32-1 Herbicides dacthal I75-99-0 Herbicides dalapon, sodium salt I
39515-41-8 Pesticides danitol I94-82-6 Herbicides db;2,4- O50-29-3 Pesticides ddt I
1163-19-5 PBDEs decabromodiphenyl ether I8065-48-3 Pesticides demeton I
103-23-1 Phthalates di(2-ethylhexyl)adipate I96-12-8 Pesticides dibromo-3-chloropropane;1,2- I
106-37-6 Pesticides dibromobenzene;1,4- I124-48-1 VOCs dibromochloromethane I
84-74-2 Phthalates di-butyl phthalate I1918-00-9 Herbicides dicamba I
79-43-6 SVOCs dichloroacetic acid I106-46-7 VOCs dichlorobenzene;1,4- I
75-71-8 VOCs dichlorodifluoromethane I75-35-4 VOCs dichloroethylene;1,1- I
156-59-2 VOCs dichloroethylene;1,2-,cis I
156-60-5 VOCs dichloroethylene;1,2-,trans I120-83-2 Phenols dichlorophenol;2,4- I
94-75-7 Herbicides dichlorophenoxyacetic acid;2,4- I78-87-5 VOCs dichloropropane;1,2- I
616-23-9 SVOCs dichloropropanol;2,3- I542-75-6 VOCs dichloropropene;1,3- I
62-73-7 Pesticides dichlorvos I60-57-1 Pesticides dieldrin I84-66-2 Phthalates diethyl phthalate I
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Endocrine, Urinary Increased kidney, adrenal and pituitary weights
Nervous Cerebellar lesions
Respiratory Nasal septum atrophy, Lactate dehydrogenase in bronchioalveolar lavage fluid
Endocrine, Urinary Increased kidney weights in female rats and adrenal weights in male and female rats
Developmental Reduced pup weights in the F1 and F2 generations
Reproductive Testicular effects
Hepatic Increased liver weights in P1 males
Hepatic Liver toxicity (fatty change)
Respiratory Hyperplasia of the nasal mucosa
Respiratory Hypertrophy/ hyperplasia of the nasal respiratory epitheliumNervous Decreased brain cholinesterase activity
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 207 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
43222-48-6 Pesticides difenzoquat O35367-38-5 Pesticides diflubenzuron I
55290-64-7 Pesticides dimethipin O60-51-5 Pesticides dimethoate O
120-61-6 Phthalates dimethyl terephthalate I121-69-7 VOCs dimethylaniline;N,N- I
68-12-2 VOCs dimethylformamide;N,N- I
105-67-9 Phenols dimethylphenol;2,4- I
576-26-1 Phenols dimethylphenol;2,6- I
95-65-8 Phenols dimethylphenol;3,4- I99-65-0 Explosives dinitrobenzene;m- I
131-89-5 Phenols dinitro-o-cyclohexyl phenol;4,6- I51-28-5 Phenols dinitrophenol;2,4- I
121-14-2 Explosives dinitrotoluene;2,4- I88-85-7 Herbicides dinoseb I
123-91-1 VOCs dioxane;1,4- I957-51-7 Pesticides diphenamid I
122-39-4 SVOCs diphenylamine O85-00-7 Pesticides diquat I
298-04-4 Pesticides disulfoton I505-29-3 SVOCs dithiane;1,4- I330-54-1 Pesticides (Carbamate) diuron I
2439-10-3 Pesticides dodine O
115-29-7 Pesticides endosulfan I145-73-3 Herbicides endothall I
72-20-8 Pesticides endrin I106-89-8 VOCs epichlorohydrin I106-88-7 VOCs epoxybutane I
16672-87-0 Pesticides ethephon I563-12-2 Pesticides ethion I
110-80-5 VOCs ethoxyethanol;2- I141-78-6 VOCs ethyl acetate I
75-00-3 VOCs ethyl chloride I759-94-4 Pesticides ethyl dipropylthiocarbamate;S- O
60-29-7 VOCs ethyl ether I2104-64-5 Pesticides ethyl p-nitrophenyl phenylphosphorothioate I
100-41-4 VOCs ethylbenzene I106-93-4 VOCs ethylene dibromide (EDB) I107-21-1 VOCs ethylene glycol I111-76-2 Glycols ethylene glycol monobutyl ether (EGBE) I
96-45-7 SVOCs ethylene thiourea I84-72-0 Phthalates ethylphthalyl ethylglycolate I
101200-48-0 Pesticides express I22224-92-6 Pesticides fenamiphos I
206-44-0 PAHs fluoranthene I86-73-7 PAHs fluorene I
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Hepatic Digestive disturbances and minimal hepatic changes suggestive of liver abnormalities
Nervous, Respiratory Atrophy and respiratory metaplasia of the olfactory epithelium
Respiratory Changes in the nasal turbinatesRespiratory Degenerative lesions of the nasal cavity
Hematologic, Reproductive Decreased testis weight, seminiferous tubule degeneration and decreased hemoglobin
Developmental, Musculoskeletal Delayed fetal ossification
Developmental Developmental toxicityRespiratory Nasal inflammation
Hematologic Hemosiderin deposition in the liver
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 208 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
16984-48-8 Nutrients fluoride I
59756-60-4 Pesticides fluridone I
56425-91-3 Pesticides flurprimidol O66332-96-5 Pesticides flutolanil O69409-94-5 Pesticides fluvalinate I
133-07-3 Pesticides folpet O72178-02-0 Pesticides fomesafen O
944-22-9 Pesticides fonofos I50-00-0 VOCs formaldehyde I
39148-24-8 Pesticides fosetyl-al O110-00-9 Furans furan I
98-01-1 VOCs furfural I
77182-82-2 SVOCs glufosinate-ammonium O
765-34-4 VOCs glycidaldehyde I1071-83-6 SVOCs glyphosate I
69806-40-2 Pesticides haloxyfop-methyl I79277-27-3 Pesticides harmony O
76-44-8 Pesticides heptachlor I1024-57-3 Pesticides heptachlor epoxide I
87-82-1 SVOCs hexabromobenzene I68631-49-2 PBDEs hexabromodiphenyl ether; 2,2',4,4',5,5'- I
118-74-1 Pesticides hexachlorobenzene I77-47-4 Pesticides hexachlorocyclopentadiene I67-72-1 VOCs hexachloroethane I70-30-4 SVOCs hexachlorophene I
822-06-0 VOCs hexamethylene diisocyanate;1,6- I110-54-3 VOCs hexane;n- I591-78-6 VOCs hexanone;2- I
51235-04-2 Pesticides hexazinone I7647-01-0 VOCs hydrogen chloride I
74-90-8 Cyanides hydrogen cyanide I7783-06-4 VOCs hydrogen sulfide I
35554-44-0 Pesticides imazalil O
81335-37-7 Pesticides imazaquin I36734-19-7 Pesticides iprodione I
78-83-1 VOCs isobutyl alcohol I78-59-1 SVOCs isophorone I
33820-53-0 Pesticides isopropalin I
82558-50-7 Pesticides isoxaben I
77501-63-4 Pesticides lactofen O58-89-9 Pesticides lindane I
330-55-2 Pesticides (Carbamate) linuron O83055-99-6 Pesticides londax I
121-75-5 Pesticides malathion I
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Respiratory Suppurative inflammation of the noseNervous Neurotoxicity (tremors and ruffled pelt)
Nervous, Respiratory Degeneration of olfactory epitheliumNervous Peripheral neuropathy (decreased MCV at 12 weeks)Nervous Motor conduction velocity of the sciatic-tibial nerve
Respiratory Hyperplasia of nasal mucosa larynx and tracheaEndocrine Thyroid enlargement and altered iodide uptakeNervous, Respiratory Nasal lesions of the olfactory mucosa
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 209 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
108-31-6 SVOCs maleic anhydride I123-33-1 SVOCs maleic hydrazide I
12427-38-2 Pesticides maneb I7439-96-5 Metals manganese I
24307-26-4 Pesticides mepiquat chloride I7487-94-7 Metal compounds mercuric chloride I
7439-97-6 Metals mercury I150-50-5 Pesticides merphos I
57837-19-1 Pesticides metalaxyl I126-98-7 VOCs methacrylonitrile I
10265-92-6 Pesticides methamidosphos I67-56-1 VOCs methanol I
950-37-8 Pesticides methidathion O16752-77-5 Pesticides (Carbamate) methomyl I
72-43-5 Pesticides methoxychlor I109-86-4 VOCs methoxyethanol;2- I
78-93-3 VOCs methyl ethyl ketone I
108-10-1 VOCs methyl isobutyl ketone I22967-92-6 Metals (organometallic) methyl mercury I
80-62-6 VOCs methyl methacrylate I91-57-6 PAHs methyl naphthalene;2- I
298-00-0 Pesticides methyl parathion I
1634-04-4 VOCs methyl tert-butyl ether I94-74-6 Herbicides methyl-4-chlorophenoxy-acetic acid;2- I75-09-2 VOCs methylene chloride I
101-68-8 SVOCs methylene diphenyl diisocyanate (MDI) I51218-45-2 Pesticides metolachlor I21087-64-9 Pesticides metribuzin I
2385-85-5 Pesticides mirex I2212-67-1 Pesticides molinate I7439-98-7 Metals molybdenum I
300-76-5 Pesticides naled I
91-20-3 PAHs naphthalene I15299-99-7 Pesticides napropamide O
7440-02-0 Metals nickel soluble salts I
14797-55-8 Nutrients nitrate I14797-65-0 Nutrients nitrite I
98-95-3 Explosives nitrobenzene I
556-88-7 SVOCs nitroguanidine I79-46-9 VOCs nitropropane;2- I
27314-13-2 Pesticides norflurazon O
85509-19-9 Herbicides nustar O32536-52-0 PBDEs octabromodiphenyl ether I
2691-41-0 Explosives octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine I
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Nervous Impairment of neurobehavioral function
NervousHand tremor; increases in memory disturbances; slight subjective and objective evidence of autonomic dysfunction
Developmental, Nervous Reduced brain weight in rat pups at 6 weeks of age
Reproductive Testicular effectsDevelopmental, Musculoskeletal Developmental toxicity (skeletal variations)
Developmental, MusculoskeletalReduced fetal body weight, skeletal variations, and increased fetal death in mice, and skeletal variations in rats.
Nervous, Respiratory Degeneration/ atrophy of olfactory epithelium (male rats)
Hepatic, Ocular, Other, Urinary
Increased absolute and relative liver and kidney weights and increased severity of spontaneous renal lesions (females), increased prostration (females), and swollen periocular tissue (males and females)
Hepatic Hepatic effects (hepatic vacuolation)Nervous, Respiratory Hyperplasia of olfactory epithelium
Nervous, RespiratoryNasal effects: hyperplasia and metaplasia in respiratory and olfactory epithelium, respectively
Nervous, Respiratory Bronchiolization of the alveoli and olfactory degeneration
Hepatic Liver focal vacuolization and nodules
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 210 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
19044-88-3 Pesticides oryzalin O19666-30-9 Pesticides oxadiazon I23135-22-0 Pesticides (Carbamate) oxamyl I42874-03-3 Pesticides oxyfluorfen O
76738-62-0 Herbicides paclobutrazol I1910-42-5 Pesticides Paraquat Dichloride I
40487-42-1 Pesticides pendimethalin O60348-60-9 PBDEs pentabromodiphenyl ether; 2,2',4,4',5- I32534-81-9 PBDEs pentabromodiphenyl ethers I
608-93-5 SVOCs pentachlorobenzene I82-68-8 Pesticides pentachloronitrobenzene I87-86-5 Herbicides pentachlorophenol I
52645-53-1 Pesticides permethrin I
13684-63-4 Pesticides phenmedipham O108-95-2 Phenols phenol I108-45-2 SVOCs phenylenediamine;m- I
62-38-4 Metals (organometallic) phenylmercuric acetate I75-44-5 VOCs phosgene I
732-11-6 Pesticides phosmet I7803-51-2 Gases phosphine I7664-38-2 SVOCs phosphoric acid I7723-14-0 Nonmetal inorganics phosphorus I
85-44-9 Phthalates phthalic anhydride I1918-02-1 Herbicides picloram I
29232-93-7 Pesticides pirimiphos-methyl O67747-09-5 Pesticides prochloraz (not in HSDB) I
7287-19-6 Pesticides prometryn O1918-16-7 Pesticides propachlor I
709-98-8 Pesticides propanil I2312-35-8 Pesticides propargite O
107-19-7 VOCs propargyl alcohol I139-40-2 Pesticides propazine I122-42-9 Pesticides propham I
60207-90-1 Pesticides propiconazole O123-38-6 VOCs propionaldehyde I
93-65-2 Herbicides propionic acid;(2-methyl-4-chlorophenoxy)2- I107-98-2 Glycols propylene glycol monomethyl ether I
75-56-9 VOCs propylene oxide I81335-77-5 Pesticides pursuit O51630-58-1 Pesticides pydrin I
129-00-0 PAHs pyrene I110-86-1 VOCs pyridine I121-82-4 Explosives rdx I
10453-86-8 Pesticides resmethrin I83-79-4 Pesticides rotenone I78-48-8 Pesticides s,s;s-tributylphosphorotrithioate O
78587-05-0 Pesticides savey I7783-00-8 Metal compounds selenious acid I7782-49-2 Metals selenium and compounds I
74051-80-2 Pesticides sethoxydim O
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Respiratory Collagen staining indicative of fibrosis
Other Decreased body weightRespiratory Bronchiolar fibrosis
Nervous, Respiratory Atrophy of olfactory epithelium
Nervous Mild reversible sedationRespiratory Nest-like infolds of the nasal respiratory epithelium
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 211 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
7440-22-4 Metals silver I506-64-9 Cyanides silver cyanide I122-34-9 Pesticides simazine I
26628-22-8 Metal compounds sodium azide I148-18-5 Metals (organometallic) sodium diethyldithiocarbamate I
62-74-8 Metals (organometallic) sodium fluoroacetate I7440-24-6 Metals strontium I
57-24-9 SVOCs strychnine I100-42-5 VOCs styrene I
88671-89-0 Pesticides systhane I1746-01-6 Dioxins TCDD;2,3,7,8- (LOW ORGANIC) (DIOXIN) I
34014-18-1 Pesticides tebuthiuron I
5902-51-2 Pesticides terbacil I886-50-0 Pesticides terbutryn I
5436-43-1 PBDEs tetrabromodiphenyl ether 2,2',4,4' I95-94-3 SVOCs tetrachlorobenzene;1,2,4,5- I
630-20-6 VOCs tetrachloroethane;1,1,1,2- I79-34-5 VOCs tetrachloroethane;1,1,2,2- I
127-18-4 VOCs tetrachloroethylene (PCE) I58-90-2 Phenols tetrachlorophenol;2,3,4,6- I
961-11-5 Pesticides tetrachlorvinphos I3689-24-5 Pesticides tetraethyl dithiopyrophosphate I
78-00-2 Metals (organometallic) tetraethyl lead I811-97-2 VOCs tetrafluoroethane;1,1,1,2- I109-99-9 Furans tetrahydrofuran I
28249-77-6 Pesticides thiobencarb I
23564-05-8 Pesticides thiophanate-methyl O
137-26-8 Pesticides thiram O118-96-7 Explosives tnt I108-88-3 VOCs toluene I
26471-62-5 VOCs toluene diisocyanate mixture;2,4-/2,6- I93-72-1 Herbicides tp;2,4,5- I
66841-25-6 Pesticides tralomethrin I2303-17-5 Pesticides triallate O
82097-50-5 Pesticides triasulfuron I615-54-3 VOCs tribromobenzene;1,2,4- I
56-35-9 Organotins tributyltin oxide I76-13-1 VOCs trichloro-1,2,2-trifluoroethane;1,1,2- I76-03-9 SVOCs trichloroacetic acid I
120-82-1 VOCs trichlorobenzene;1,2,4- I71-55-6 VOCs trichloroethane;1,1,1- I79-00-5 VOCs trichloroethane;1,1,2- I
79-01-6 VOCs trichloroethylene (TCE) I75-69-4 VOCs trichlorofluoromethane I95-95-4 Phenols trichlorophenol;2,4,5- I93-76-5 Herbicides trichlorophenoxyacetic acid;2,4,5- I
598-77-6 VOCs trichloropropane;1,1,2- I
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Nervous CNS effects
Nervous, Ocular Reaction time/cognitive effects and effects to vision in occupationally-exposed adults.
Reproductive Leydig cell hyperplasiaHepatic, Nervous Increased liver weight and centrilobular cytomegaly, CNS effects (narcosis)
Nervous Neurological effects in occupationally-exposed workersRespiratory Chronic lung-function decline
Hepatic, Nervous Liver histopathologic changes, Performance on neurobehavioral tests
Developmental, Immune Decreased thymus weight, fetal heart malformations
Washington State Department of Ecology - Cleanup Levels and Risk Calculation (CLARC) Noncancer Critical Effects and Target Organs/Systems - August 2020
Cleanup Levels and Risk Calculation (CLARC) https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 212 of 218
See also notes found at the end of this table.
CAS #Chemical Data
GroupChemical Name
source
96-18-4 VOCs trichloropropane;1,2,3- I58138-08-2 Pesticides tridiphane I
121-44-8 VOCs triethylamine I1582-09-8 Pesticides trifluralin I
526-73-8 VOCs trimethylbenzene;1,2,3- I95-63-6 VOCs trimethylbenzene;1,2,4- I
108-67-8 VOCs trimethylbenzene;1,3,5- I99-35-4 Explosives trinitrobenzene;1,3,5- I
unavailable12 Radionuclides uranium, soluble salts A1314-62-1 Metal compounds vanadium pentoxide I1929-77-7 Pesticides vernam I
50471-44-8 Pesticides vinclozolin O108-05-4 VOCs vinyl acetate I
75-01-4 VOCs vinyl chloride I81-81-2 Pesticides warfarin I
1330-20-7 VOCs xylenes I
7440-66-6 Metals zinc I557-21-1 Cyanides zinc cyanide I
1314-84-7 Metal compounds zinc phosphide I12122-67-7 Pesticides zineb I
Noncancer Organ/System AffectedInhalation Route
see IRIS descriptions
Noncancer Critical EffectInhalation Route
Respiratory peribronchial lymphoid hyperplasia in male rats
Respiratory Inflammation of the nasal passage
Nervous Decreased Pain sensitivityNervous Decreased Pain sensitivityDevelopmental Decreased fetal weight
Nervous, Respiratory Nasal epithelial lesionsHepatic Liver cell polymorphism
Nervous Impaired motor coordination (decreased rotarod performance)
Notes - Noncancer Effects TableSource: A = ATSDR; I = EPA IRIS; O = EPA Office of Pesticide Programs
MTCA human health cleanup levels for individual noncarcinogens are based on achieving a hazard quotient (HQ) of 1. An HQ is derived by comparing a human health receptors (e.g., a child or adult resident) estimated daily dose of a hazardous substance to the reference dose. The reference dose is considered an estimate of a daily oral exposure level that is likely to be without an appreciable risk of harmful effects during a lifetime. If the average daily dose is higher than the reference dose, then there is a potential for a noncancer health effect to occur and the hazard quotient is greater than 1. When there are multiple noncarcinogenic chemicals of concern at a site, the HQs for each are summed up to derive a hazard index (HI). The HI is an expression of the additivity of noncarcinogenic health effects. The principle of additivity assumes that similar organ systems and health endpoints will be affected by the chemicals of concern. As such, and consistent with EPA superfund risk assessment guidance, MTCA allows noncancer hazard quotients from multiple chemicals to be apportioned by similar type of toxic response when evaluating compliance with the noncancer target HI of 1.
The information provided in the CLARC noncancer effects table, which was compiled based on information from EPA’s Integrated Risk Information System (IRIS) database, can be used to calculate hazard indices for groups of chemicals with similar types of noncancer effects. Groupings can be made by major noncancer effect categories such as neurotoxicity, developmental toxicity, reproductive toxicity, immunotoxicity, and adverse effects by target organ. This information is presented in the table by exposure route (i.e., ingestion or inhalation) for those chemicals with noncarcinogenic toxicity data available in EPA’s IRIS database.
Note that there is a not a table showing carcinogenic tumor types. For cancer causing chemicals (a.k.a., carcinogens), the total cancer risk is derived by summing the cancer risk for all chemicals of concern. This approach is in accordance with MTCA and is consistent with EPA guidelines in which risks associated with carcinogens are considered additive with the same toxicological endpoint (i.e., cancer).
Washington State Department of Ecology - Toxics Cleanup Program August 2020
Cleanup Levels and Risk Calculation (CLARC)https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 213 of 218
CLARC Chemical-Specific Considerations - August 2020Ammonia
The calculation of WAC 173-201A fresh water ammonia criteria for protection of aquatic species depends on the water quality characteristics (temperature and pH), fish life-stage, and the chemical form/species of ammonia (e.g., ionized or non-ionized). For federal CWA 304A protection of aquatic species, the ammonia Freshwater criteria vary depending on pH, temperature and life-stage. The CWA 304A ammonia Saltwater criteria vary depending on pH and temperature.
Asbestos
The unit of measurement for asbestos in water is fibers/liter (and not the usual milligrams/liter or micrograms/liter). CLARC lists the federal and Washington State Maximum Contaminant Levels for asbestos (7 million fibers per liter), but does not provide pre-calculated Method B or C formula values which would depend on fiber type and content.
For inhaled asbestos, the number listed for the inhalation unit risk is in fibers/milliliter. An inhalation cancer potency factor could not be calculated.
Benzo[a]pyrene and Carcinogenic PAHs
In January, 2017, the U.S. Environmental Protection Agency (EPA) published several changes to the toxicity values for benzo[a]pyrene (BaP) in its Integrated Risk Information System (IRIS) database. EPA also determined that benzo[a]pyrene has a mutagenic mode of action and therefore recommended the use of ADAFs (age-dependent adjustment factors) to address increased childhood sensitivity (compared to adults) to its carcinogenic (cancer-causing) effects. These changes affect some Model Toxics Control Act Method B and Method C cleanup levels for BaP and for carcinogenic polycyclic aromatic hydrocarbons (cPAHs). Updated toxicity values and the approach for calculating cleanup levels for BaP and cPAHs are presented in a January 2020 Ecology memorandum (see link below - PAH/BaP January 2020 Memo). Application of Toxicity Equivalence Factors (TEFs) in calculating cleanup levels for cPAH mixtures is described in Implementation Memo #10 (see link below - cPAH TEF Implementation #10).
Polycyclic Aromatic Hydrocarbons and Benzo[a]pyrene: Changes to MTCA Default Cleanup Levels for 2017 (January 2020), available at
Ecology’s Implementation Memo No. 10: Evaluating the Human Health Toxicity of Carcinogenic PAHs (cPAHs) Using Toxicity Equivalency Factors (TEFs) (April 2015), Publication No. 15-09-049, available at
https://fortress.wa.gov/ecy/publications/SummaryPages/1509049.html
https://www.ezview.wa.gov/Portals/_1987/Documents/Documents/MTCA_PAHCleanupLevels.pdf
Washington State Department of Ecology - Toxics Cleanup Program August 2020
Cleanup Levels and Risk Calculation (CLARC)https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 214 of 218
CLARC Chemical-Specific Considerations - August 2020Cadmium - Soil and Water
EPA’s IRIS database lists two oral noncancer reference doses for cadmium, one for cadmium in water (0.0005 mg/kg-day) and one for cadmium in food (0.001 mg/kg-day). As explained in EPA’s User’s Guide for the Regional Screening Levels Tables (see link below for EPA RSL Table), the oral reference dose for cadmium in food should be used for the assessment of noncancer effects to soil and biota. When using the MTCA Equations to calculate soil, groundwater, and surface water cleanup levels, the more protective oral reference dose (0.0005 mg/kg-d for “water”) is used for potable groundwater and surface water, while the less protective one (0.001 for “food”) is used for soil and nonpotable surface water (where the calculated cleanup level is based on ingestion of fish and shellfish).
Cadmium - Applicable Federal and State Laws for Fresh Surface Water
For cadmium, federal and state fresh surface water criteria for the protection of aquatic life vary depending on hardness of the water at the site (see link below)
Chromium
CLARC does not provide pre-calculated standard Method B or C formula values for total chromium. CLARC does provide pre-calculated standard Method B and C formula values for chromium III and chromium VI. Assessors should test for total chromium first and then test for chromium VI only if the concentration for total chromium exceeds the cleanup level for chromium VI.
If chromium VI is present at the site, then the concentration of chromium III is determined by subtracting the chromium VI concentration from the total chromium concentration. If chromium VI is NOT present at the site, then the site assessor may assume that the measured concentration of total chromium is the concentration of chromium III.
If there is documented evidence that chromium VI was never used at the site, then the site assessor does not need to test for chromium VI and may assume that the measured concentration of total chromium is the concentration of chromium III.
For groundwater, the total chromium federal and Washington State Maximum Contaminant Level is 100 µg/L, and CLARC contains the value from the Method A Groundwater Table (Table 720-1) of 50 µg/L. The Method A number assumes that a portion of the chromium is hexavalent; if all of the chromium is trivalent, then the Method A number is 100 µg/L.
Chromium - Applicable Federal and State Laws for Fresh Surface Water
For chromium, federal and state fresh surface water criteria for the protection of aquatic life vary depending on hardness of the water at the site (see link below).
Link to hardness note within this document
Link to hardness note
EPA RSL Table: https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables
Washington State Department of Ecology - Toxics Cleanup Program August 2020
Cleanup Levels and Risk Calculation (CLARC)https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 215 of 218
CLARC Chemical-Specific Considerations - August 2020Cyanide
In broad terms, analytical techniques for cyanide can quantify either “total” cyanide or “free” cyanide. The oral reference dose for cyanide that is listed in CLARC, and the cleanup levels calculated with the MTCA Equations, are based on free cyanide, meaning that results from analyses for free cyanide are acceptable for samples. A total cyanide measurement is also acceptable, but the measured concentration of total cyanide in a sample may be higher than the concentration quantified with a free cyanide analysis, potentially leading to unnecessary cleanup.
CLARC also lists several individual cyanide compounds with reference doses from IRIS:
Fluoride
Different agencies, including Ecology, have used several CAS numbers to identify fluoride. The CLARC Tables will now use a single name (“fluoride”) and a single CAS number (16984-48-8) to evaluate fluoride contamination in water, soil, and air. ChemIDplus lists this CAS number as “Fluoride,” “F-,” or “inorganic salts of hydrofluoric acid, HF, in which the fluorine atom is in the -1 oxidation state.”
The following CAS numbers are assumed to be equivalent for the purpose of screening water, soil, and air for fluoride (unless analyzing specifically for fluorine gas, CAS 7782-41-4):
• 7664-39-3, listed in ChemIDplus as hydrofluoric acid or hydrogen fluoride. This is the CAS number associated with the California EPA Reference Exposure Levels for hydrogen fluoride. Cal EPA also has a listing for “Fluorides (other than Hydrogen Fluoride)” without a CAS number. CLARC does not include the Cal EPA oral REL because the oral reference dose for soluble fluoride that is listed in IRIS is used instead. The Cal EPA inhalation REL for “Fluorides (other than Hydrogen Fluoride)” is listed in CLARC and has been associated with CAS 16984-48-8.
• 7681-49-4, listed in ChemIDplus as sodium fluoride. This is the CAS number associated with the U.S. EPA Maximum Contaminant Level for fluoride.
• 7782-41-4, listed in ChemIDplus as fluorine gas. This is the CAS number associated the listing in the U.S. EPA IRIS database (listed as Fluorine; soluble fluoride). Note that the IRIS reference dose is based on studies of fluoride in drinking water and not fluorine gas.
Gross alpha particle activity
The unit of measure for the Method A and Maximum Contaminant Level value of 15 is picocuries/liter (not micrograms/liter).
Gross beta particle activity
The unit of measure for the Method A and Maximum Contaminant Level value of 4 is millirem/year (not micrograms/liter).
Washington State Department of Ecology - Toxics Cleanup Program August 2020
Cleanup Levels and Risk Calculation (CLARC)https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 216 of 218
CLARC Chemical-Specific Considerations - August 2020
Hardness-dependent Fresh Surface Water Criteria to Protect Aquatic Life
For the following metals, fresh surface water criteria for the protection of aquatic life are not a single number, but change based on hardness of the water at the site:
• Cadmium• Chromium III• Copper• Lead• Nickel• Silver• Zinc
To calculate the appropriate criteria for Ecology’s 201A, apply site-specific hardness to the formulas provided in WAC 173-201A-240 (see link below).
For EPA’s Recommended Water Quality Criteria, apply site-specific hardness to the formulas provided in EPA's National Recommended Water Quality Criteria Table (CWA 304; see link below). Note that for its copper criteria, EPA recommends using the Biotic Ligand Model (see link below).
Prior to 2018, fresh water 201A criteria listed in CLARC were based on a hardness of 25 mg/L and those for 304A were based on a hardness of 100 mg/L. As of this update, both sets of criteria are based on a hardness of 100 mg/L.
Lead
CLARC does not provide pre-calculated standard Method B or C formula values for lead. Values for lead cannot be calculated using the equations provided in the regulation. Assessors should consult with the Department of Ecology regarding the use of EPA’s Integrated Exposure Uptake Biokinetic (IEUBK) model to calculate soil cleanup levels (see link below).
Lead - Applicable Federal and State Laws for Fresh Surface Water
For lead, federal and state fresh surface water criteria for the protection of aquatic life vary depending on hardness of the water at the site (see link below).
Manganese
The oral reference dose used in the soil and water Method B and C cleanup level calculations was obtained from the U.S. Environmental Protection Agency’s Integrated Risk Information System (IRIS) and is based on manganese intake from food. EPA recommends modifying (dividing) the reference dose by a factor of 3 when assessing manganese exposure to water or soil. This generates a modified oral reference dose of 0.0467 mg/kg-day to be applied to non-food sources such as soil and water. The reasons for this adjustment are described in EPA’s IRIS summary.
Link to hardness note within this document
Link to EPA IEUBK Model
WAC 173-201A-240: https://apps.leg.wa.gov/wac/default.aspx?cite=173-201A-240
CWA 304: https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-tableCopper Biotic Ligand Model: https://www.epa.gov/wqc/aquatic-life-criteria-copper
Washington State Department of Ecology - Toxics Cleanup Program August 2020
Cleanup Levels and Risk Calculation (CLARC)https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 217 of 218
CLARC Chemical-Specific Considerations - August 2020
Methyl mercury
The unit of measure for the methyl mercury surface water cleanup levels for human health protection is milligrams per kilogram of fish tissue, not micrograms per liter of water.
WAC 173-201A Table 240 does not specifically list a protective concentration for methylmercury. However, the notes for mercury aquatic life chronic criteria (fresh and marine water) indicate that if the four-day average chronic surface water concentration is exceeded more than once in a three-year period, the edible portion of the consumed species should be analyzed and shall not be allowed to exceed 1.0 mg/kg of methylmercury (see link below)
pH-dependent calculations
For the following chemicals, the cleanup levels for soil to protect groundwater vary depending on the pH of the soil.Soil Organic Carbon-Water Partitioning Coefficient (Koc) values based on a pH of 6.8 were used to calculate cleanup levels for soil to protect groundwater for the chemicals below.
Benzoic acidChlorophenol;2-Dichlorophenol;2,4-Dinitrophenol;2,4-PentachlorophenolTetrachlorophenol;2,3,4,6-Trichlorophenol;2,4,5-Trichlorophenol;2,4,6-
Use the link below for information on determining the appropriate soil cleanup level to protect groundwater for these chemicals.
Washington State (WAC 201A) freshwater aquatic life criteria for pentachlorophenol are pH dependent. The values presented in CLARC correspond to a pH of 7.8 which is the same default pH used by EPA in their Ambient Water Quality Criteria. The formulas provided in WAC 173-201A-240 should be used to derive freshwater acute and chronic criteria for pentachlorophenol based on site-specific pH (see link below).
Radium 226
The unit of measure for the Method A number is picocuries/liter (not micrograms/liter).
Radium 226 and 228
The unit of measure for the Method A and Maximum Contaminant Level is picocuries/liter (not micrograms/liter).
WAC 173-201A-240: https://apps.leg.wa.gov/wac/default.aspx?cite=173-201A-240
Link to Soil Protection of Groundwater Guidance: https://www.ezview.wa.gov/Portals/_1987/Documents/Documents/SoilCleanupLevelsToProtectGroundwater..pdf
Link to WAC 173-201A-240: https://apps.leg.wa.gov/wac/default.aspx?cite=173-201A-240
Washington State Department of Ecology - Toxics Cleanup Program August 2020
Cleanup Levels and Risk Calculation (CLARC)https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Contamination-clean-up-tools/CLARC Page 218 of 218
CLARC Chemical-Specific Considerations - August 2020Refractory ceramic fibers
The unit of measure for the inhalation reference concentration is fibers/m3 (not mg/m3). An inhalation reference dose could not be calculuated.
Total Trihalomethanes (TTHM) - Maximum Contaminant Levels
The individual trihalomethanes (bromodichloromethane, bromoform, chloroform, dibromochloromethane, chloroform) all have the state and federal MCL of 80 micrograms/liter listed in the table. However, 80 micrograms/liter is the MCL for Total Trihalomethanes (mixtures containing more than one of these chemicals). If the mixture contains only one of these chemicals, then the MCL of 80 micrograms/liter would apply to that chemical.
Listed Maximum Contaminant Level for Disinfectants
The chemical is a water additive used to control microbes. The listed MCL is a Maximum Residual Disinfectant Level (MRDL). The MRDL is the highest level of a disinfectant allowed in drinking water (see link below).
pH Units
pH criteria are expressed in terms of pH units, not micrograms per liter. EPA's freshwater human health pH criteria range (pH of 5 to 9) is based on protection of domestic water supplies (see link below to EPA's 1986 Gold Book). A range of pH from 5 to 9 provides a water treatable by typical (coagulation, sedimentation, filtration, and chlorination) treatment plant processes.
EPA's aquatic life and human health surface water quality criteria for pH can be accessed using the link below.CWA 304: https://www.epa.gov/wqc
EPA's National Primary Drinking Water Regulations: https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations
Quality Criteria for Water (1986 Gold Book): https://www.epa.gov/wqc/quality-criteria-water-gold-book