University of California, Davis · 3.2 Soil Borings to Ground Water All soil borings shown on...

University of California, Davis

Waste Burial Holes Characterization ReportSCDS/LEHR Environmental Restoration

JULY 2001

MONTGOMERY WATSON

SFUND RECORDS CTR117089

SANTA BARBARA • SANTA CRUZ

UNIVERSITY OF CALIFORNIA, DAVIS

BERKELEY • DAVIS • IRVINE • LOS ANGELES • RIVERSIDE • SAN DIEGO • SAN FRANCISCO

ENVIRONMENTAL HEALTH & SAFETYUNHVERSrrY OF CALIFORNIAONE SHIELDS AVENUEDAVIS, CALIFORNIA 95616-8648(530) 752-1493 FAX (530) 752-4527

July 16, 2001

Ms. Kathy SetianU.S. Environmental Protection AgencyFederal Facilities Cleanup Office, Section 175 Hawthorne Street, SFD-72San Francisco, CA 94105

Re: Waste Burial Hole Characterization Report

Dear Ms. Setian:

Please find enclosed two copies of the above-referenced waste burial hole characterization report. Thisreport is intended to address concerns regarding the Waste Burial Holes area at the LEHR and SouthCampus Disposal Sites.

If you have any questions about the enclosed document, please call me at (530) 752-6041, or write me atthe following address:

Environmental Health & SafetyUniversity of CaliforniaOne Shields AvenueDavis, California 95616-8646

Brian OatmanLEHR/SCDS Project Manager

Enclosure: Waste Burial Holes Characterization Report

Susan Timm, RWQCBSteve Ross, DTSCSudana Kwok, DHSSusan Fields, DOEBob Devany, Weiss Associates

Julie Roth, DSCSOCMary Rust, DSCSOCG. Fred Lee, G. Fred Lee & AssociatesJoseph Turner,Jeff Bold, Montgomery Watson

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DRAFTWASTE BURIAL HOLES

CHARACTERIZATION REPORTDA VIS, CALIFORNIA

Table of Contents

Section Page

1.0 INTRODUCTION..................................................................................................................................1.1 Purpose ...........................................................................................................................................31.2 Report Organization........................................................................................................................ 4

2.0 BACKGROUND AND PREVIOUS INVESTIGATIONS ...................................................................... 52.1 Background..................................................................................................................................... 52.2 Previous Investigations................................................................................................................... 52.3 Previous Investigation Results........................................................................................................ 5

3.0 METHODS.........................................................................3.1 Modifications to the Work Plan...................................................................................................... 73.2 Soil Borings to Ground Water......................................................................................................... 83.3 Shallow Borings from 2 to 6 Feet bgs.............................................................................................. 83.4 Quality Assurance/Quality Control/ Data Validation...................................................................... 8

4.0 RESULTS................................................................................................................................................. 94.1 Hazardous Waste Constituents........................................................................................................ 9

4.1.1 Metals..................................................................................................................................... 94.1.2 Semi-Volatile, Volatile Organics, Pesticides and PCB's...................................................... 104.1.3 Reactivity, Ignitibility and Corrosivity................................................................................. 10

4.2 Constituents of Concern................................................................................................................ 104.3 In-Situ Groundwater Samples....................................................................................................... 10

5.0 DISCUSSION......................................................................................................................................... 125.1 Surface Soil................................................................................................................................... 125.2 Groundwater Quality.................................................................................................................... 12

5.2.1 Comparisons to Background, and Downgradient Water Quality.......................................... 125.2.2 Current and Historic Groundwater Quality........................................................................... 13

5.3 Subsurface Soils............................................................................................................................ 145.3.1 COCs in Subsurface Soils..................................................................................................... 14

Subsurface Soil Samples................................................................................................................... 155.3.2 Designated Level Methodology........................................................................................... 15

6.0 CONCLUSION....................................................................................................................................... 197.0 REFERENCES....................................................................................................................................... 21


CHARACTERIZATION REPORTDAVIS, CALIFORNIA

List of Tables, Figures, and Appendices

TablesTable 1A - Summary of Soil and Groundwater analysisTable IB - Analytical Methods for COC's in SoilTable 1C - Soil Analyte List for Hazardous Waste CharacterizationTable ID - Groundwater Analyte ListTable 2A - Composite Soil (VOC's)Table 2B - Composite Soil (HW)Table 3 - Discrete SoilTable 4 - Groundwater/Hydropunch DataTable 5 — Hazardous Waste, PRG and Background EvaluationTable 6 - Designated Level Methodology

FiguresFigure 1 - Site Vicinity MapFigure 2 - Waste Disposal MapFigure 3 - Composite Sample Location MapFigure 4 - Soil Boring Location Map

List of AppendicesAppendix A - Previous Investigation ResultsAppendix B - Boring LogsAppendix C - Historic Groundwater Monitoring Data - UCD1-13Appendix D - Hydrologic Evaluation of Landfill Performance Model (HELP) V.3

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CHARACTERIZATION REPORTDAVIS, CALIFORNIA

1.0 INTRODUCTION

Montgomery Watson has prepared this Waste Burial Hole Characterization Draft Report onbehalf of the University of California, Davis (UC Davis) for additional investigation performed atthe former Laboratory for Energy-related Health Research/South Campus Disposal Site(LEHR/SCDS site, Figure 1). This draft report presents the results obtained from the WasteBurial Hole Characterization Work Plan dated December 2000 (Montgomery Watson, 2000).This draft report describes soil and groundwater investigation after completion of a RemovalAction conducted in the former Waste Burial Holes area shown on Figure 2. The WBH InterimRemoval Action (IRA) was completed in November 1999, documented in the Draft Final WBHRemoval Action Report dated July 21, 2000, and subsequently approved by the United StatesEnvironmental Protection Agency (US EPA) on August 11, 2000.

This investigation and this draft report complies with requirements of the Scope of Work (SOW)in the Administrative Order on Consent (AOC) issued by the US EPA on September 30, 1999.The AOC is issued under the authority of the Comprehensive Environmental Response andLiability Act (CERCLA). UC Davis has prepared and revised a comprehensive Field SamplingPlan (FSP) (Dames & Moore, 1998b), Quality Assurance Project Plan (QAPP) (Dames & Moore1998c), and Health and Safety Plan (HSP) (Dames & Moore, 1996), which are also part of theRemedial Investigation and Feasibility Study Work Plan for remediation investigation andconstruction activities at the LEHR/SCDS site. The FSP, QAPP and HSP have been reviewed bythe U.S. EPA and served as project guidance documents for implementation of the WBH WorkPlan.

1-1 PurposeThe purpose of this investigation is to evaluate surface soils for, hazardous waste characteristics &< Qand evaluate the constituents of concern' (COC's) in soils beneath the previous WBH waste. Data 'collected from this investigation, in conjunction with previous investigation and post IRAexcavation data, is used to evaluate the potential for additional impacts to groundwater as part ofthe Remedial Investigation and Feasibility Study for the site.

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1.2 Report Organization

This Report presents six sections following this Introduction. Section 2.0 summarizes thebackground and previous data collected in the WBH area. Section 3.0 presents the field programrationale and investigation methods. Section 4.0 presents the results, Section 5.0 presents the dataevaluation, Section 6.0 presents conclusions and Section 7.0 gives references cited.

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2.0 BACKGROUND AND PREVIOUS INVESTIGATIONS

2.1 BackgroundBased on historical records, low-level radioactive waste material was disposed in 49 burial pits orwaste burial holes (Figure 2) between 1956 and 1974 (Dames & Moore, 1999). According to therecords, each burial pit was approximately 4 feet by 4 feet in area and extended to a depth ofapproximately 10 feet below ground surface (bgs). In general, the waste consisted of vials,syringes, laboratory glassware, and animal carcasses. After disposal, holes were covered with alayer of native silty fill material.

Two groundwater monitoring wells (UCD1-13 and UCD2-14), located down gradient of theWBHs have shown elevated concentrations of tritium and carbon-14 in groundwater. The tritiumand carbon-14 detected in groundwater appears to be localized and has not been observed in otherwells (URS, 2001). Based on these findings, several soil and soil gas investigations were initiatedfrom 1988 to 1998 to characterize potential sources to groundwater located in the WBH area.

2.2 Previous InvestigationsTwo reconnaissance trenching programs (Wahler, 1988; Dames and Moore, 1990), a soil gasinvestigation (PNL, 1995), and a trenching and soil sampling program (Dames and Moore,1998a) were completed in the WBH area. Prior to the removal action conducted in 1999,approximately twenty-five soil and eleven soil-gas samples were submitted for analysis.

2.3 Previous Investigation ResultsAnalysis of soil and soil gas samples collected from the WBH area prior to the IRA suggests thatthe most significant contaminants observed in this area were radionuclides. Tritium and carbon-14 were reported at concentrations above background. Previous soil, soil gas, and waste sampleresults are presented in Appendix A.

Previous investigation of the former WBH area focused on characterizing the upper 10 feet ofwaste material, which was removed during the WBH removal action. One soil boring, SB-32(Figure A-l), was advanced below former wastes to a depth of 35 feet bgs. Sample data from thisboring shows the highest activity for all parameters was detected at 6.5 feet bgs in waste(Appendix A). Below the waste, concentrations for all constituents declined sharply with depth(Appendix A).

During the removal action in 1999, commingled soil and waste were segregated and the sortedsoil was used as backfill. The locations of the "sorted soil" are shown in plan view on Figure A-2. During the IRA, samples from the sorted soils were analyzed for tritium, carbon-14 and forhazardous waste constituents. Analysis of soil samples shows residual tritium and carbon-14

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activities well below the EPA Preliminary Remediation Goals (PRGs) for residential soils fortritium and carbon-14.

Soil samples were collected from the base of each excavation and were tested for tritium andcarbon-14 during the BRA (Figure A-3). Based on the results reported, none of these samplesexceed PRGs for either tritium or carbon-14.

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3.0 METHODS

The field program described in this report complied with the approved WBH Work Plan. Detailsof the QAPP, FSP, and HSP were followed except where noted in the WBH Work Plan. GeneralEngineering Laboratories Inc (GEL), located in Charleston, South Carolina, conducted alllaboratory analyses.

The WBH Removal Action was designed to remove low level radioactive waste (LLRW), debris,and other source material potentially impacting groundwater. Following waste removal, soil andgroundwater samples were collected within and beneath former waste burial holes area. Thesamples were analyzed for hazardous waste constituents and COC's to evaluate potential forresidual migration of COC's to groundwater.

3.1 Modifications to the Work PlanConditions in the field required minor modifications to the WBH Work Plan. Thesemodifications from the WBH Work Plan were relatively minor and did not subtract form thescope of work presented in the WBH Work Plan. All modifications utilized methods hi theapproved FSP. The three modifications from the WBH Work Plan included modifying the in-situwater sampling method, extending the depth of soil borings SBL-390 from 19 to 40 ft bgs, andcollecting a duplicate sample from SBL-399 rather than SBL-396. These modifications areexplained in greater detail below:

1) In-situ groundwater samples from the borings SBL-395, SBL-393 and SBL-391 (see Figure 4for locations) were collected as in-situ borehole groundwater grab samples, according to SOP1.2.3 In-situ Groundwater Sampling, in place of the Hydropunch method. The hydropunch wasattempted in all five locations but failed to produce sufficient groundwater at SBL-391, -393, and-395. Evidently, hydropunch sampling at these locations failed due to high clay content and thinsand lenses encountered. The ™hydropunch method was successful in locations SBL-399, andSBL-396.

2) Boring SBL-390 was advanced to 40ft bgs with continuous core instead of 19ft bgs. The depthwas increased to better characterize the stratigraphy at the western portion of the WBH area. Theboring was moved 2, feet to the south to allow enough room for the drilling equipment.

3) A duplicate groundwater sample was collected from SBL-399 instead of the duplicate plannedfor SBL-396. This change was made because their was insufficient groundwater available inlocation SBL-396 to collect a duplicate.

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3.2 Soil Borings to Ground WaterAll soil borings shown on Figures 4 and 5 were drilled using hollow-stem auger techniquesaccording to SOP 6.0 - Soil Borings. Five borings were completed to groundwater.Groundwater samples from the borings were collected from locations SBL-396 and SBL-399using the ™hydropunch method. In-situ groundwater grab samples were collected at locationsSBL-391, -393, and -395. All five borings produced enough water for sampling and groundwatersamples were collected at all five locations as planned. Two continuous core borings werecompleted to groundwater SBL-390 and SBL-399. The remaining 5 borings were terminated at20 feet bgs. Each soil boring was logged by a qualified geologist according to the Unified SoilsClassification System (USCS) as outlined in SOP 7.0 - Logging of Soil. The boring logs arepresented in appendix B.

3.3 Shallow Borings from 2 to 6 Feet bgsThe shallow 2 to 6 ft bgs borings were completed using hollow-stem auger techniques accordingto SOP 6.0 - Soil Borings. Twenty-one shallow borings were completed and samples collectedfrom the bottom of each boring.

All soil samples were collected in 6-inch long by 2-inch diameter stainless steel sleeves, asdescribed in SOP 6.0. All soithe manufacturer instructions.described in SOP 6.0. All soil samples were subsampled for VOC's using the En-Core™ using

3.4 Quality Assurance/Quality Control/ Data ValidationAn integral part of the WBH sampling and analysis plan is the QA/QC program to ensure thereliability and compatibility of all data generated during the investigation. The field andlaboratory procedures prescribed in the RI/FS QAPP (Dames & Moore, 1998) were employed forverifying and maintaining performance quality during the collection and chemical analysis of soiland grab-groundwater samples. The analytical methodology used for sample analysis wasconsistent with the methods employed during other investigations at the site.

The data generated by GEL were subjected to data validation. The analytical data was validatedaccording to the procedures presented in the RI/FS QAPP. The data validation proceduresprovide quality criteria for evaluating precision, accuracy, representativeness and completeness.For some analytical results, quality criteria were not met and various data qualifiers were added toindicate bias introduced during sampling handling or analyses. These data qualifiers arepresented along with the analytical data at the end of the tables section. Data qualified asestimated (J/UJ) exhibited some bias during analysis and should be considered an approximatemeasure of the respective analyte concentration. Data qualified, as anomalous (U) should beconsidered not detected above the adjusted laboratory-reporting limit. Data qualified as rejected(R) are not useful in determining the presence or absence of the respective analyte.

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4.0 RESULTS

The purpose of this investigation as stated in Section 1.2 is to further characterize surface soils forhazardous waste characteristics and subsurface soils for residual concentrations of constituents ofconcern (COC's) that could continue to impact ground water. In-situ groundwater samples werealso obtained to evaluate current groundwater conditions relative to downgradient monitoringdata, and to compare groundwater quality with soil analytical data.

As presented in Table 1A, and shown on figure 3 surface soil samples were collected in three .-, .,types of soil: sorted, 2ft-overburden and overburden soils the distinction between these soils is f~) flpriy\ ^^discussed in the WBH Characterization Sampling Work Plan. The depth of the soil borings "~~"ranged from 2 to 6ft bgs. The surface soils were composited as indicated on Figure 3 andanalyzed for COC's and hazardous waste constituents listed on Table IB and 1C. Groundwatersamples were analyzed for COC's listed in Table ID. The analytical methodology used forsample analysis is consistent with the methods employed during other investigations at the site.These methods, compounds, detection limits, and quality control measures are detailed in theWBH Characterization Sampling Work Plan (Montgomery Watson, 2001 and in the LEHR/SCDSQAPP).

4.1 Hazardous Waste ConstituentsAll 21 shallow soil samples (locations shown onjjigure 4) were analyzed for the full list of VOCsin soils, with the results presented in Table ,2A._J The 21 individual-samples were grouped bysample ID, composited by the laboratory and submitted for ^non-volatile.- hazardous wasteconstituents (metals, pesticides, semi-volatiles, general chemistry, corrosivity, ignitibility, andreactivity). The results for the composite samples are presented in Tables 2B.

4.1.1 MetalsTo determine hazardous waste characteristics, total metals and select total organic constituentswere compared against the TTLC, 10 times STLC, and 20 times TCLP. To achieve thecomparison for totals against the STLC and TCLP dilutions factors must be factored in, thereforthe 10 and 20 times factors.

Nickel and chromium HI are the only metals over the STLC regulatory limits. Nickel andchromium III are below background, TCLP and TTLC regulatory threshold concentrations.Chromium VI, lead, selenium, silver and zinc are above background but below hazardous wastethresholds of TCLP, TTLC and STLC. All other metals analyzed are below background andregulatory thresholds for hazardous waste. The results are shown in Table 2B and Table 5.

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4.1.2 Semi-Volatile, Volatile Organics, Pesticides and PCB'sAll seven composite samples were analyzed for semi-volatile and volatile organics, pesticides andPCB's and the results are presented in Table 2A and 2B. Out of all semi-volatile, volatileorganics, pesticides and PCB compounds analyzed none are above regulatory limits for TTLC,STLC and TCLP. The volatile organics, pesticides and PCB are sporadically detected throughoutall soils in the WBH area.

The sporadic detection of VOC's, semi-volatiles, pesticides and PCB are consistent with previousinvestigation results.

4.1.3 Reactivity, Ignitibility and CorrosivityThe general chemistry parameters listed in Table 2B include pH, reactive releasable cyanide,reactive releasable sulfide, ignitability, Nitrate-N and TDS. The pH ranged from 7.9 to 8.1. ThepH range is consistent with native soils in the Davis area. The reactive releasable cyanide wasdetected in one of the seven samples at 22ug/Kg. The reactive releasable sulfide was not detectedin any sample above the method detection limit. Ignitability was below the 200°F threshold.

4.2 Constituents of ConcernThe results of COC's (tritium, carbon-14, nitrate-N, TDS, chromium, chloroform and VOCs) inthe soil borings are presented in Table 2B and Table 3. Tritium is reported above background butbelow the residential PRG of 1 l,OOOpCi/g. Total tritium in the soil samples ranged from 2.7pCi/gto 455pCi/g. The highest value of dissolved tritium (10,500pCi/L) was reported hi SBL-375. Theaverage dissolved tritium is 55 percent of the total tritium. Both total and dissolved tritium valueswhere lowest hi the overburden and 2-ft overburden and highest in the sorted soil. Tritiumconcentrations are lower in the surface soils then the subsurface soils. All soil tritiumconcentrations are considerably lower then previous investigation results.

Carbon-14 is reported above background but below the residential PRG of 770pCi/L. Both totaland dissolved carbon-14 values are lowest in the overburden and 2-ft overburden and highest inthe sorted soil. Carbon-14 concentrations are higher in the surface soils than the subsurface soils.The average percent soluble carbon-14 from the total carbon-14 is 26 %. Hexavalent chromiumconcentration in soil is greater then background, but well below the PRG value.

4.3 In-Situ Groundwater SamplesAll five hydropunch samples show carbon-14 concentrations. Carbon-14 ranges from 103pCi/L inHP-393 to 785pCi/L in sample HP-396 (Table 4). The carbon-14 concentrations in theHydropunch samples are much lower then the concentrations in well UCD1-13. Carbon-14 rangein well UCD1-13 is 900pCi/L to 2500pCi/L. Carbon-14 concentrations are above the backgroundof50pCi/L.

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Tritium is detected in all five samples. In one sample HP-396 tritium is detected at 36,500pCi/L.Sample HP-396 is above background and the MCL of 20,OOOpCi/L. The range of tritium in wellUCD1-13 is 9000pCi/L to 30,OOOpCi/L.

Chloroform is detected in three out of the five samples. Chloroform ranges from 0.19ug/L insample HP-396 to 1.3ug/L in sample HP-391. Nitrate is also detected in all samples ranging fromllmg/L to 41mg/L in HP-391 and HP-395 respectfully. Nitrate is above backgroundconcentrations of 27.4mg/L. 1,2-Dichloropropane is only detected in HP-399 at 0.16ug/L. Allother samples are below the detection limits. The other VOC's, 2-butanone, acetone, benzene,methylene chloride and toluene are below the detection limits.

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5.0 DISCUSSION

The data collected in this investigation provides a comprehensive evaluation of the chemical andradiological quality of surface soils, subsurface soils, and groundwater in the WBH area. Thissection will evaluate the hazardous constituents in surface soils in the WBH area, and discuss thepotential for residual concentrations of COCs in soils to impact groundwater.

5.1 Surface SoilThe surface soil analytical data is presented in Tables 2A and 2B. Table 5 presents a comparisonof the range of WBH surface soils data compared to site background (Weiss, 1998), hazardouswaste criteria (CCR Title 22 Section 66261.24-), and Region 9 Prelininary Remediation Goals(PRGs)(EPA, 2000).

As shown on Table 5, none of the surface soil samples exceed hazardous waste characteristics. Alimited number of constituents (lead, tritium, carbon-14), exceed estimated background soilconcentrations, and only arsenic exceeds the PRG, although background arsenic concentrationsalso exceed PRGs. These comparisons demonstrate that the sorted soils and overburden materialdisturbed during the WBH Removal Action do not constitute a waste or apparent, health risk,although risks associated with these data will be evaluated more thoroughly in the Site Wide RiskAssessment. It should be noted that all WBH surface soils are covered with a six-inch layer ofclean imported fill, compacted and sloped to drain away from the WBH area (Dames & Moore,2000).

5.2 Groundwater QualityThis section evaluates the groundwater quality data below the WBH area relative to historicupgradient, and downgradient groundwater quality data from monitoring wells collected from1990 to the present. The purpose of comparing these current groundwater samples togroundwater monitoring data is to attempt to observe trends in groundwater quality and to makequalitative comparisons groundwater quality in the WBH area.

5.2.1 Comparisons to Background, and Downgradient Water QualityQuantitative comparisons of water quality between in-situ borehole groundwater grab, or

Hydropunch™ samples and monitoring well samples are not appropriate, but qualitativecomparisons of trends can be made. As noted in Section 3.0, in-situ borehole groundwatersamples are generally turbid and are not purged to obtain formation water similar to monitoringwell samples.

The table below presents in-situ groundwater concentration ranges observed in background(UCD1-18), WBH in-situ groundwater samples and downgradient monitoring data from UCD1-

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13. This well was selected because of its proximity to the WBH area, and because UCD1-13 isthe only HSU-1 well that contained tritium and carbon-14 in the past.

Constituent

TritiumCarbon- 14Nitrate-NTDSChromiumChloroform

Units

pCi/LpCi/Lmg/Lmg/Lug/Lug/L

UCD1-1895% UTL1

965ND<50

27.478844

ND<0.5

Range of In-SituGWSamples (Table 4)

<95±266 to 36,500±1050103±32 to 785+59.

11 to 41890 to 1,700

1.8 to 520.19 to 1.3

Range of UCD1-13Monitoring Well Data

9000 to 30,000900 to 2,500

9.8 to 18730 to 1,200

56 to 1700.33 to 140

1 - Montgomery Watson, 2001 - Background Concentration Study HSU-1ND - Not detected

This summary table shows that groundwater beneath the WBH area is impacted for all COCscompared to background concentrations observed in UCD1-18. WBH in-situ groundwatersamples also exceed the concentrations observed in downgradient well UCD1-13 in many, but notall cases. The data presented in the table above and in Table 4 further justifies the recent removalof wastes in the WBH IRA (Dames & Moore, 2000).

5.2.2 Current and Historic Groundwater QualityTable 4 and the summary table presented above show that groundwater is impacted, beneath theWBH area, additional analysis of the data is needed to evaluate the magnitude of the impactsrelative to historic groundwater quality downgradient of the WBH area. Appendix C presentstime versus concentration graphs for COCs in well UCD1-13. These graphs show a decreasingtrend over for tritium and carbon-14 in UCD1-13, with relatively more consistent concentrationsfor TDS, nitrate-N, chromium, and chloroform over time in well UCD1-13.

Inspection of the time versus concentrations graphs in Appendix C suggest that historic impactsfrom the WBH wastes (especially tritium and carbon-14) to groundwater have peaked and arebeing attenuated through radioactive decay, dispersion and natural attenuation. An interperetivesummary of variablility associated with the current WBH in-situ groundwater data relative tobackground, and downgradient HSU-1 conditions for each COC is presented below:

• Tritium was below the reporting limit in 4 out of 5 samples, but the one reported detection(36,500+1050 pCi/L) was above the MCL (20,000 pCi/L), and roughly equivalent to thehighest reported activity in 1990, in downgradient well UCD1-13;

• Carbon-14 activity was reported in all five samples above background well UCD1-18, butbelow activities observed in downgradient well UCD1-13;

• TDS concentrations were consistently higher than background well UCD1-18. 3 out 5samples were higher than historic TDS data from downgradient well UCD1-13;

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• Nitrate-N concentrations were higher than background well UCD1-18; 3 out of 5 sampleswere higher than historic TDS data from downgradient well UCD1-13;

• Chromium concentrations were higher than background well UCD1-18 in 3 out of 5 samples,but well below concentrations reported in downgradient well UCD1-13; and

• Sporadic, low reported detections (below 2.0ug/L) were observed for chloroform and otherVOCs.

Comparing the current data to the groundwater monitoring data, the groundwater in the WBHarea was a historically significant source of impacts, but these impacts are localized and havediminished over time (1990 to the present). Based on the placement of wastes in the WBH areain the late 1950s to 1974, and tritium's 12.3 year half-life, 2.5 to 4 half-lives for tritium havealready occurred, reducing tritium levels by 75% (2 half-lives) to 94% (4 half-lives).

Treatment technologies for tritium in soil and groundwater are not available at this time.However, natural radioactive decay is a significant attenuation mechanism at this site as discussedabove.

Levels of carbon-14 are consistent, but relatively low compared to activities observed indowngradient wells. These results suggest a release from the WBH area has occurred, but thatdispersion and natural attenuation is continuing to reduce concentrations in downgradient wells.

TDS, nitrate, chromium are also present in groundwater upgradient and downgradient of theWBH area. These constituents are being captured and addressed by the Groundwater IRAsystem.

5.3 Subsurface SoilsThe discussion presented above suggests that groundwater is impacted above background levelsfor tritium and carbon-14, with concentrations for nitrate and TDS, chloroform, VOCs, andchromium, are roughly equivalent to, or only slightly above background levels. These findingsare consistent with the types of wastes (LSC vials containing tritium, carbon-14, biologicalwastes), that were removed from the WBH area (Dames & Moore, 2000).

5.3.1 COCs in Subsurface SoilsThis section will now discuss the potential for native soils below the former WBH wastes tocontinue to impact groundwater. This evaluation will include an analysis of the subsurface soilsdata using the Designated Level Methodology (DLM)(RWQCB, 1989) to predict impacts togroundwater from remaining soil.

Following the DLM analysis, a simple one-dimensional model designed to simulate theinfiltration of rainfall will be presented to support the DLM analysis. The purpose of modeling

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rainfall infiltration is to estimate the velocity of rainfall and provide a qualitative estimate formobile COCs (tritium, nitrate) percolating through the vadose zone. This simulation was notintended to quantitatively estimate constituent migration. The model selected for the rainfallinfiltration simulation is the Hydrologic Evaluation of Landfill Performance (HELP) Version 3(USAGE, 1997, Appendix D).

Table 3 presents the total and WET extract (deionized water) results for the COCs; includingtritium, carbon-14, nitrate, TDS, chloroform and VOCs. COC concentrations in the surface soils(Table 2) were similar to concentrations in the subsurface native soils data presented in Table 3,with the exception of TDS, which was higher in WET extracts in surface soils than in subsurfacesoils.

The summary table below presents a comparison between surface and subsurface soil data forCOC concentrations:

Constituent

TritiumTritium (WET)Carbon-14Carbon-14 (WET)Nitrate-NNitrate-N (WET)TDS (WET)Chromium (WET)ChloroformChloroform (WET)Other VOCs(2-butanone)Other VOCs (WET)(2-butanone)

Units

pCi/gpCiTLpCi/gpCi/Lmg/kgmg/Lmg/Lmg/Lug/kgug/Lug/kg

ug/kg

Surface Soil Samples(Table 2)

<-1.06±3.41 to 212+1.3<8 1+245 to 10,500±549<0.27±3.63 to 7.9+0.382<-4.2+28.2 to 96+31.6

3.8 to 320.52 to 1.8

232 to 1,960<0.05 to 0.28

< 1.0 to 3.8< 0.32 to 0.46.

4.0 to 11(2-butanone)

<5.0(2-butanone)

Subsurface Soil Samples(Table 3)

<-l. 43+3.63 to 455+16<-34.6±242 to4,310±396<0.069±0.227 to 1.1+0.265<-26.6±27.5 tO<14+27.5

8 to 370.44 to 1.993 to 359

<0.01 to 0.022<1.3

0.44 to 0.54<5.1 to 2.4

(2-butanone)<5.0tol.l

(2-butanone)

5.3.2 Designated Level MethodologyThe DLM is straightforward when WET data are available from the soils or solid waste

samples. The basic processes used in the DLM are as follows:

1) Identify a water quality goal (background, basin plan objective, MCL etc.) for eachconstituent;

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2) Identify an environmental attenuation factor (100 is used as a default for fine-grained soilswith 30 feet or more to groundwater);

3) Calculate a Site-Specific Soluble Designated Level (SSDL) using the equation:SSDL= water quality goal x environmental attenuation factor -r 10.Note division by 10 compensates for the 10-fold sample dilution conducted as part of theWET procedure.

4) Compare the SSDL to the WET data collected from the site.5) If the WET data exceeds the SSDL, the residual impacts represent a potential to impact

groundwater. If the WET data is less than the SSDL, the environmental attenuation factor isadequately protective to prevent additional groundwater quality degradation beyond the waterquality goal.

A DLM analysis is conducted on the surface and subsurface soil data, and the results arepresented in Table 6. A brief summary of the water quality goals and the environmentalattenuation factors used for this analysis is presented below.

Water Quality GoalsThe water quality goals for nitrate, TDS and chromium were set at background concentrations inHSU-1. Background upper tolerance limits for HSU-1 background well UCD1-18 were recentlycalculated (Montgomery Watson, 2001), and these data were used for nitrate, TDS andchromium. The analytical method detection limits were selected for carbon-14, chloroform, andother VOC's. In choosing water quality goals the most restrictive applicable, waster quality goalsshould be selected for deriving designated levels. In this analysis background concentrationswere used because they were the most restrictive.

The water quality goal for tritium was set at the MCL, which is 20,000 pCi/L. The MCL ratherthan background was selected for the following reasons. Tritium impacts to groundwater havebeen adequately characterized by the current monitoring well network. Tritium levels hidowngradierit well UCD1-13 were originally three times the MCL in 1990, and have beensteadily declining for the last 10 years to levels near the MCL. Tritium impacts are limited intheir lateral extent to the well pair UCD1-13, and UCD2-14. Finally, there is no remediationtechnology capable of treating tritium in soil or groundwater. Excavation to and beneath thegroundwater table (approximately 40 feet bgs) and off-site disposal would be the only option.

Environmental Attenuation FactorThe DLM analysis was conducted with two environmental attenuation factors (EAF), the firstusing the default EAF equal to 100, for the Central Sacramento Valley, and the second DLManalysis with a more conservative EAF equal to 10. The default EAF of 100 is used for siteswhere vadose zone materials have significant clay content (>10 to 20% clay), and groundwater ismore 30 feet bgs (RWQCB, 1989,). The WBH area meets the criteria for default EAF equal to

\\Ussacls-ifosvr\sacmdustrial\Project\LEHR\WBH_Misc\WBHDrft7_9 .doc 16

100, based on the soils encountered, (Appendix B) and the depth to groundwater, encounteredbetween 40 and 45 feet, although groundwater level fluctuates.

This investigation was conducted between March 26 and 30, 2001, when groundwater levels inHSU-1 reach their peak. Since wastes buried from 4 to 10 feet bgs, at least 30 feet of soilsseparate the wastes and average groundwater levels. These conditions justify the defaultconditions associated with an EAF equal to 100. However, because historic groundwater levelsmay have risen to less than 30 feet bgs, a second EAF equal to 10 was also evaluated in a secondDLM analysis.

DLM AnalysisTable 6 presents the results of the two DLM analyses. Based on the DLM parameters and theWET analyses, no additional impacts to groundwater are anticipated based on the residualconcentrations of constituents in soils assuming an EAF of 100.

When the EAF was reduced from 100 to 10, only 1 of 13 samples failed to meet the SSDLstandard for one of the 6 COCs. The WET result for TDS in composite sample SBL-377 wasnearly than 3 times higher than any other sample result, and failed the SSDL for TDS when theEAF was 10. One additional sample for chloroform SBL-392 (0.53 ug/L) exceeded the SSDL forchloroform of 0.5 ug/L although the duplicate for this sample, SBL-392D (0.44ug/L) did notexceed the SSDL, when the EAF was 10.

These results suggest that the residual impacts currently present in soils will not impactgroundwater above background, with the possible exception of tritium, whose water quality goalwas set at the MCL, rather than background. These data show that buried wastes in the WBHarea between 1956 and 1974 migrated to groundwater through infiltration of rainfall, andfollowing waste removal, residual impacts from would not be expected to continue to cause animpact to groundwater beyond previous levels.

Modeling Rainwater InfiltrationAppendix D presents the results of two simulations of rainfall infiltration through soils before andafter wastes were removed from the WBH area. The model employed for these simulations isHELP 3, a simple model that simulates infiltration, runoff, evapotranspiration, and change hi soilmoisture storage, using site-specific daily weather data (temperature, precipitation, solarradiation), via a simple water balance approach. HELP 3 simulates unsaturated soil moisturetransport using multiple soil layers, compacted soils, and geo-synthetic liners (not used in thisanalysis) to design landfill caps and subsurface drainage liners and leachate collection systems.HELP 3 was selected primarily because it uses site-specific climate data (Davis weather station,with daily weather information from 1974 to 1999), has a large inventory of soil types, and isfocused in predicting infiltration, rather than relying on assumed infiltration rates.


The first simulation is intended to evaluate rainfall infiltration following waste burial prior to theWBH Removal Action conducted in 1999. Appendix D describes the model input and output.Prior to waste removal in 1999, HELP 3 predicts that an annual infiltration rate of approximately11 inches per year. Based on an average porosity of the subsurface (40%), the depth of thewetting front would reach approximately 2 feet per year. This suggests that water in contact withwastes at approximately 8 feet bgs, in 1970, would reach the groundwater table at 35 feet bgs inapproximately 12.6 years, in approximately 1983. This suggests the most mobile compoundsincluding tritium, were flushed through the WBH area into groundwater in the mid to late 1980's.This prediction is consistent with downgradient groundwater data, which suggests that levels oftritium in HSU-1 groundwater peaked in the early 1990s and have been steadily declining from1990 to the present.

A second model run was completed in order to simulate rainfall infiltration following wasteremoval, backfill and compaction of excavated soil, and placement of a sloped, compacted soilcap. This second model run predicts an 80% reduction in rainwater infiltration due to soilcompaction during backfill, surface soil grading to facilitate runoff and the placement of acompacted soil cap. Based on the 80% reduction in infiltration, and the removal of wastes,potential migration of constituents present in soil to groundwater has been significantly reduced.


6.0 CONCLUSION

This WBH Characterization Sampling Report has provided analytical data from disturbed surfacesoils, undisturbed soils beneath the former wastes and in-situ groundwater samples from theWBH area.

The surface soils were tested for a full suite of organic and inorganic analytes. As the majority ofthis soil was disturbed soil during the WBH IRA, testing has focused on addressing whether itcontained hazardous waste characteristics. Results showed that surface soils are impactedprimarily with tritium and carbon-14, are not hazardous and concentrations of site COC's are wellbelow PRGs (except for arsenic, present at background levels). Further evaluation of risksassociated with the WBH area will be addressed in the Site Wide Risk Assessment.

Five in-situ groundwater samples were obtained from the WBH area at 40 to 45 feet bgs. One offive in-situ groundwater samples from the WBH area, had reported tritium concentrations abovethe MCL. Concentrations of other COCs were also reported at or below background, with theexception of TDS, which was consistently higher than background. Based on time versusconcentration data from well UCD1-13, located 200 feet downgradient of the WBH area, COCsin groundwater are approaching background in most cases.

Ten subsurface soil samples were collected beneath the former wastes and analyzed for total andsoluble COCs by the WET method using deionized water. The DLM was used along with theWET data to evaluate residual impacts of subsurface soils to continue to impact groundwater.This DLM evaluation and the WET data from the site suggest that residual concentrations ofsurface and subsurface soils will not continue to impact groundwater above background levels orMCLs (for tritium). In addition to the DLM evaluation, an evaluation of rainfall infiltrationsuggests that soil compaction, surface grading and placement of a compacted soil cap completedas part of the 1999 WBH IRA reduced infiltration of rainwater by an additional 80%.

Based on the results of this investigation, the WBH IRA has been successful in removing thewaste materials and past sources to groundwater hi the WBH area. Based on the DLM analysis,residual concentrations of COCs in soils do not appear to impact groundwater above backgroundlevels with the exception of tritium. The DLM suggests that WBH area soils will not contributetritium beyond the MCL. Tritium levels in UCD1-13, have steadily declined since 1990 and havebeen below the MCL's since the mid-1990s due to radioactive decay and dispersion and areanticipated to decline more rapidly now that the source has been removed from the WBH area.

The condition of the WBH area and the improving groundwater quality will be demonstrated inthe on-going quarterly monitoring program in place for UCD1-13. In the unlikely event thathistoric groundwater quality trends of improving groundwater quality are reversed, any

\\Ussacls-ifosvi\sac industrial\Project\LEHR\WBH_Misc\WBHDrft7_9.doc 19

outstanding issues associated with the WBH area will be addressed in the Remedial Investigationand Feasibility Study.

\\Ussac ls-ifosvr\sac industrial\Project\LEHR\WBH_Misc\WBHDrft7^9.doc 20

7.0 REFERENCES

California Code of Regulation, Title 22. Section. 66261.24.

Dames & Moore, 2000, Draft Final Waste Burial Hole Removal Action Report, SCDSEnvironmental Restoration, Davis California. July 21.

Dames & Moore, 1999a. Draft Final Interim Removal Action Work Plan, Waste Burial Holes,SCDS Environmental Restoration, Davis, California. August.

Dame & Moore, 1999b. Waste Burial Holes Engineering Evaluation/Cost Analysis, SCDSEnvironmental Restoration, Davis, California. March 1.

Dames & Moore, 1998a. Waste Burial Holes Data Transmittal Data Gaps Limited FieldInvestigation, South Campus Disposal Site, Davis, California. March 30.

Dames & Moore, 1998b. Revised Field Sampling Plan, UC Davis Additional Field Investigation,LEHR/SCDS Environmental Restoration, Davis, California. December.

Dames & Moore, 1996. Final Health and Safety Plan, LEHR Environmental Restoration. July.

Dames & Moore, 1998c. Final Revised QAPP - UC Davis Additional Investigation.

Dames & Moore, 1990. Final SWAT Report, Old UCD Landfill for the University of California,Davis

Montgomery Watson, 2000. Waste Burial Holes Characterization Sampling Work Plan, LEHREnvironmental Restoration. Davis California.

Pacific Northwest Laboratory, 1995. Data Needs for detailed Evaluation of PresumptiveRemedial Actions at the Laboratory for Energy-Related Health Research, University ofCalifornia, Davis. October.

RWQCB, 1989. The Designated Level Methodology for Waste Classification and Cleanup LevelDetermination, October 1986, update June 1989.

Wahler Associates, 1988. Groundwater Soil Investigation, UC Davis Research Facility, Davis.

•California.

URS, 2000. 2000 Annual Groundwater Treatment System and Water Monitoring Report,LEHR/SCDS, Davis, California.

\\Ussacls-ifosvr\sac industriaI\Project\LEHR\WBH_Misc\WBHDrft7_9.doc 21

Tables

MONTGOMERY WATSON

TABLE1ASummary of Soil and

Groundwater Analyses(page 1 of 2)

MediaSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoilSoil

GroundwaterSoil

Soil Typesorted soilsorted soilsorted soilsorted soilsorted soilsorted soilsorted soilsorted soilsorted soil

2-Ft Overburden2-Ft Overburden2-Ft Overburden

sorted soilsorted soilsorted soil

OverburdenOverburdenOverburdenOverburdenOverburdenOverburden

NativeNativeNativeNativeNativeNativeNative

_Native

Sample ID

SBL-371ASBL-371BSBL-371CSBL-372ASBL-372BSBL-372CSBL-373ASBL-373BSBL-373CSBL-374ASBL-374BSBL-374CSBL-375ASBL-375BSBL-375CSBL-376ASBL-376BSBL-376CSBL-377ASBL-377BSBL-377C

SBL-390- 15SBL-390- 17SBL-390-19SBL-391-15

SBL-391-15D6

SBL-391-17SBL-391-19

HP-391SBL-392-15

SampleDepth

2'4'6'2'4'6'4'5'6'5'5'6'4'5'&2'4'6'2'4'6'15'17'19'15'15'17'19'

30-50'15'

Discrete/CompositeCompositeCompositeCompositeCompositeCompositeCompositeCompositeComposite

- CompositeCompositeCompositeCompositeCompositeComposite

- CompositeCompositeCompositeCompositeCompositeCompositeCompositeDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscrete

AnalytesHW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

HW1, COCs2

Tritium4, Carbon- 145

COCs2


Tritium4, Carbon- 14s


COCs2

Tritium4, Carbon-145

COCs3


Notes:Sample locations for SBL-371 to SBL-377 shown on Figure 3, SBL-390 to SBL-399 shown on Figure 41 - Hazardous waste analytes defined on Table 1C2 - COC analytes in soil defined on Table IB, including the full list of VOCs in EPA Method 8260B3 - COC analytes in groundwater defined on Table ID, including the full list of VOCs in EPA Method 8260B4 - Total tritium in soil by method EPA 906,05 - Total carbon-14 in soil by method EPA 520/5-84-0066 - Duplicate sample

Table 4-R3 Revised 7/10/01

TABLE1ASummary of Soil and

Groundwater Analyses(page 2 of 2)

MediaSoilSoilSoilSoilSoilSoil

GroundwaterSoilSoilSoilSoilSoilSoilSoil

GroundwaterSoilSoilSoil

GroundwaterGroundwater

SoilSoil

, SoilSoilSoilSoilSoilSoilSoil

Groundwater

Soil TypeNativeNativeNativeNativeNativeNative

—NativeNativeNativeNativeNativeNativeNative

„NativeNativeNative

——

NativeNativeNativeNativeNativeNativeNativeNativeNative-

Sample IDSBL-392-17

SBL-392-17D6

SBL-392-19SBL-393-15SBL-393-17SBL-393-19

HP-393SBL-394-15SBL-394-17SBL-394-19

SBL-394-19D6

SBL-395-15SBL-395-17SBL-395-19

HP-395SBL-396-15SBL-396-17SBL-396-19

HP-396HP-396D6

SBL-397-15SBL-397-17SBL-397-19SBL-398-15SBL-398-17SBL-398-19SBL-399-15SBL-399-17SBL-399-19

HP-399

SampleDepth

17'17'19'15'17'19'

30-50'15'17'19'19'15'17'19'

30-50'15'17'19'

30-50'30-50'

15'17'19'15'17'19'15'17'19'

30-50'

Discrete/Composite

DiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscreteDiscrete

AnalytesCOCs2

COCs2



COCs2


COCs3


COCs2




COCs2


COCs3


COCs2


COCs3

COCs3


COCs2



COCs2



COCs2


COCs3

Notes:Sample locations for SBL-371 to SBL-377 shown on Figure 3, SBL-390 to SBL-399 shown on Figure 41 - Hazardous waste analytes defined on Table 1C2 - COC analytes in soil defined on Table IB, including the full list of VOCs in EPA Method 8260B3 - COC analytes in groundwater defined on Table ID, including the full list of VOCs in EPA Method 8260B4 - Total tritium in soil by method EPA 906.05 - Total carbon-14 in soil by method EPA 520/5-84-0066 - Duplicate sample

Table 4-R3 Revised 7/10/01

TABLE IB

Analytical Methods for COCs in SoilFormer Waste Burial Holes

LEHR/SCDS Environmental RestorationDavis, California

SAMPLE PREPARATIONANALYTE Total DIWET (1)

Carbon-14Tritium

Hexavalent ChromiumVOCs

Nitrate-NTotal Dissolved Solids

XXX(2)

XX

NA

XXXX(3)

XX

ANALYTICAL METHODAnalysis

EPA 520/5-84-006EPA 906.0EPA7196AEPA 8260BEPA 300.0EPA 160.1

DETECTION LIMITSTotal DIWET (1)

2pCi/g6pCi/g

0.5 mg/kg10 mg/kg0.5 mg/kg

NA

20pCi/L300 pCi/L

10 ug/L0.5 to 5.0 ug/L

O.lOmg/L20mg/L

(1) - Extraction method for soils will follow CCR Title 22 for deionized water leachate.(2) - Extraction method for total hexavalent chromium in soil is the same as the DI WET method, results will be reported in and ug/L units.(3) - For VOCs, a zero-headspace extraction unit will be utilized to minimize volatilization.NA - Method not available

TablelB-WBHCOCSoil 7/11/01

Table 1C

Soil Analyte List for Hazardous Waste CharacterizationFormer Waste Burial Holes


Analyte

Metals (Total)AntimonyArsenicBariumBerylliumCadmiumChromiumChromium-VICobaltCopperLeadMercuryMolybdenumNickelSeleniumSilverThalliiumVanadiumZinc

Semivolatile Oreanics (Total)o,m-Cresolp-CresolCresol - Total1 ,4-Dichlorobenzene2,4-DinitrotolueneHexachlorobenzeneHexachlorobutadieneHexachloroethaneKeponeNitrobenzenePentachlorophenol2,4,5-Trichlorophenol2,4,6-Trichlorophenol

EPA Analytical Method

,601GB601 OB6010B6010B601 OB601 OB7196A6010B6010B601 OB7470

6010B6010B6010B601 OB6010B6010B6010B

8270C8270C8270C8270C8270C8270C8270C8270C8270C8270C8270C8270C8270C

Detection Limit (ug/kg)

50025025025025025050025025025050500250250250500250250

330330

- 330330330330330330330330800800330

Table 1C - WBH Haz Constituents 1 of 2 7/11/01

Table 1C

Soil Analyte List for Hazardous Waste CharacterizationFormer Waste Burial Holes


Analyte

Volatile OreanicsBenzeneCarbon TetrachlorideChlorobenzeneChloroform1 ,2-Dichloroethane1 , 1 -DichloroethyleneMethyl Ethyl KetonePyridineTrichloroethyleneTetrachloroethyleneVinyl Chloride

Pesticides and PCBs (Total)AldrinChlordane (alpha & gamma)DDDDDEDOTDieldrinEndrinHeptachlorLindaneMethoxychlorMirexPCBsToxaphene

Other ParameterspHReactivityIgnitability

EPA Analytical Method

8260B8260B8260B8260B8260B8260B8260B8260B8260B8260B8260B

8081808180818081808180818081808180818081808180818081

ASTM 4972Ch. 7.3.4

1010M

Detection Limit (ug/kg)

1010101010101010101010

1.71.73.33.33.33.33.31.71.7174

33*170

NANANA

* with the exception of Arochlor-1221 = 67 ug/kgNA - Not ApplicableNote: This table created based on generator knowledge of the site and adopted from the CaliforniaAssessment Code Title 26

Table 1C - WBH Haz Constituents 2 of 2 7/11/01

Table ID

Groundwater Analyte ListFormer Waste Burial Holes


AnalyteCarbon-14TritiumTotal ChromiumTotal Dissolved SolidsNitrate-NVOCs2

Analytical Method1

EPA 520/5 - 84 - 006EPA 906.0

CLP SOW ILC02.0EPA 160.1EPA 300.0EPA 8260B

Detection Limits20pCi/L300 pCi/L

lOug/L20mg/L0.1 mg/L

0.5 to 5.0 ug/L

Analytical methods, detection limits, holding time, sample container preservatives are listed in theFSP (Dames & Moore, 1998b).

A complete list of VOCs according to EPA Method 8260B will be analyzed (includingchloroform, acetone, benzene, toluene, ethylbenzene, xylene, and other VOCs) see the FSP(Dames & Moore, 1998b) for the complete list of analytes, detection limits, holding time,containers, preservatives, etc.

TablComposite Samples

Waste Burial Hole InvestigationLEHR/SCDS Environmental Restoration


Sample Identification

Location Sample ID Depth Date Sampled QASBL-371 [SBL-371-COMP ,SBl-371 | SBL-371 A-2 2SBL-371 (SBL-371B-4SBL-371SBL-372SBL-372SBL-372SBL-372SBL-373 ^SBL-373SBL-373SBL-373SBL-374SBL-374SBL-374SBL-374SBL-375 J<

SBL-375 "SBL-375SBL-375SBL-376SBL-376SBL-376SBL-376SBL-377SBL-377SBL-377SBL-377

SBL-371 C-6tSBL-372-COMPSBL-372A-2SBL-372B-4SBL-372C-6SBL-373-COMPSBL-373A-4SBL-373B-5SBL-373C-6SBL-374-COMPSBL-374A-5SBL-374B-5SBL-374C-6[SBL-375-COMPSBL-375A-4 n

SBL-375B-5SBL-375C-6SBL-376-COMP __ ,SBL-376A-2SBL-376B-4SBL-376C-6SBL-377-COMPSBL-377A-2SBL-377B-4SBL-377C-6

_

6

246

456

556

456

246

24 i6

29-Mar-01 j29-Mar-01L_2jyy|ar'01

29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-01

———

| _ 29-Mar-6i__L_29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-oi29-Mar-0129-Mar-0129-Mar-01

. 29-Mar-0129-Mar-0129-Mar-0129-Mar-6l29-Mar-OJ __ j29-Mar-0129-Mar-0129-Mar-01

VOCs

1 ,1 ,1 -Trichloroethaneug/kg ug/lSoil Dl WETNR <1.0NRNRNRNR <1.0NRNRNR __ i

NR <1.0NRNRNRNR <1.0NR __ ,NRNRNR <1.0NRNRNRNR ,__Sl£__NRNRNRNR <1.0NRNR ^ - -NR

1,1,2,2-Tetrachloroethaneug/kg ug/lSoil Dl WETNR <1.0NRNRNRNR <1.0NRNRNR , __ - -NR <1.0NRNRMRNR <1.0NR~NRNRNR <1.0NRNRNRNR ,__£L°_NRNRNRNR <1.0NRNRNR

1,1,2-Trichloroethaneug/kg ug/lSoil Dl WETNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1 .0NR _,NRNRNR <1.0NRNRNRNR <1,0NRNRNRNR <1.0NRNRNR

1,1-Dichloroethaneug/kg ug/lSoil Dl WETNR <1.0NRNRNRNR <1.0NRNRNR , __ --NR <1.0NRNRNRNR <1.6NR e

NR , ___ L-NRNR <1.0NRNRNRNR , __ <1.6NRNRNRNR <1.0NRNRNR

Notes:QA represents sample collected as field duplicate.- - Not AnalyzedNR Not Reported Page 1 of 9 Montgomery Watson

Composite SamplesWaste Burial Hole Investigation

LEHR/SCDS Environmental RestorationUniversity of California, Davis


Location Sample ID Depth Date Sampled QASBL-371 iSBL-371-COMP i 29-Mar-01SBL-371 JSBL-371A-2 j 2 \ 29-Mar-01SBL-371 JSBL-371B-4SBL-371SBL-372SBL-372SBL-372SBL-372SBL-373SBL-373SBL-373SBL-373SBL-374SBL-374SBL-374SBL-374SBL-375SBL-375SBL-375SBL-375SBL-376 __ jSBL-376SBL-376SBL-376SBL-377SBL-377SBL-377SBL-377

SBL-371 C-6^BL-372-COMPSBL-372A-2SBL-372B-4SBL-372C-6[SBL^73-COMPSBL-373A-4SBL-373B-5SBL-373C-6SBL-374-COMPSBL-374A-5SBL-374B-5 _____ jSBL-374C-6SBL-375-COMPSBL-375A-4SBL-375B-5,SBL-375C-6ISBL-376-COMPSBL-376A-2SBL-376B-4SBL-376C-6SBL-377-COMPSBL-377A-2SBL-377B-4SBL-377C-6

46

| _

4, ^

I 456

5

56

456

246

246

29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-01

,__ 29-Mar-0129-Mar-01

———

29-Mar-01 j29-Mar-0129-Mar-0129-Mar-01

•'

VOCs

1,1-Dichioroethyieneug/kg ug/lSoil Dl WET

<1 .0<0.96<1.2<117

<1.0<1.0<0.99<108

<1.0<1.2<1.0<1.2

<1 .0<1.0 __ --<1.1<1.2

<1.0<1.1<1.1<1.1

-- _^ <1.0<1.2<1.1<103

<1.0<1.1<1.0<1.0

1 ,2-Dichloroethaneug/kg ug/lSoil I Dl WET

<1.0<0.96<1.2 ^___ll__.<117

<1.0<1.0<0.99<108

<1 .0<1.2<1.0<1.2

<1.0<1.0<1.1<1.2

<1.0<1.1

<1.0<1 .2<1.1<103

<1.0<1.1<1.0 L --<1.0

1 ,2-Dichloropropaneug/kg ug/lSoil I Dl WETNR <1.0NRNRNRNR <1.0NRNRNR ,___ --NR <1.0NRNRNRNR <1.0NR ,_ - -NRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNR


able 24Table 2AComposite Samples




Location Sample ID Depth Date Sampled QASBL-371 SBL-371-COMP f ; 29-Mar-01SBL-371SBL-371SBL-371SBL-372SBL-372SBL-372SBL-372SBL-373SBL-373SBL-373SBL-373SBL-374SBL-374SBL-374SBL-374SBL-375SBL-375SBL-375SBL-375SBL"5IL_SBL-376SBL-376SBL-376SBL-377SBb-377SBL-377SBL-377

SBJ^Sj ^^ 2 j 29-Mar-01SBL-371 B-4SBL-371 C-6SBL-372-COMPSBL-372A-2SBL-372B-4SBL-372C-6SBL-373-COMPSBL-373A-4SBL-373B-5SBL-373C-6 _____SBL-374-COMPSBL-374A-5SBL-374B-5SBL-374C-6SBL-375-COMPSBL-375A-4SBL-375B-5SBL-375C-6SBL-376-COMPSBL-376A-2SBL-376B-4SBL-376C-6SBL-377-COMPSBL-377A-2SBL-377B-4SBL-377C-6

_ 46

246

456

556

456

24_ __ j6

246

29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129"MSt91_(29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Ma7oi 129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-01 i

VOCs

2-Butanoneug/kg ug/lSoil- -

DIWET<5.0

6.78.3

<587<5.0

6.04.2 J<539

<5.05.6 J7.211

^ <5-0

6.9 , __ --6.66.7

<5.09.44.0 J6.9

<5.66.0 J6.6

<516<5.0

6.45.18.4

2-Hexanoneug/kg ug/lSoil I Dl WETNR <5.0NRNRNRNR <5.0NRNRNR , __ --NR <5.0NRNRNRNR <5.0_. ---7:

NRNRNR <5.0NRNRNRNR ,__S5.0_NRNRNRNR <5.0NRNRNR

4-Methyl-2-pentanoneug/kg ug/lSoil I Dl WETNR ,_ <5.0NRNRNRNR <5.0NRNRNRNR <5.0NR --NR -"-NRNR <5.6NRNRNRNR <5.0NRNRNRNR <5.6NRNRNRNR <5.0NRNRNR

Acetoneug/kg ug/lSoilNR

DIWET1.6 J

NRNRNRNR 2.3 JNRNRNRNR 2.6 JNRNRNRNRNR

muzNRNRNR 2.7 JNRNRNRNR 1.3 JNRNRNRNR 1.9 JNRNRNR


Table2AComposite Samples




Location Sample ID Depth Date Sampled QASBL-371 ;SBL-371-COMP ? ; 29-Mar-01SBL-371 SSBL-371A-2 * 2 j 29-Mar-01SBL-371 JSBL-371B-4 j 4 29-Mar-01SBL-371 JSBL-371C-6 j 6SBL-372 ls'BL-372-C6MP |SBL-372SBL-372SBL-372SBL-373SBL-373SBL-373SBL-373SBL-374SBL-374SBL-374SBL-374SBL-375SBL-375SBL-375SBL-375SBL-376SBL-376SBL-376SBL-376SBL-377SBL-377SBL-377SBL-377

^BL-372A-2 j 2jSBL-^B- . ____ I 4SBL-372C-6SBI-373-COMPSBL-373A-4SBL-373B-5SBL-373C-6SBL-374-COMPSBL-374A-5SBL-374B-5SBL-374C-6SBL-375-COMPSBL-375A-4SBL-375B-5 _jSBL-375C-6SBL-376-COMPSBL-376A-2SBL-376B-4SBL-376C-6SBL-377-CdMPSBL-377A-2SBL-377B-4SBL-377C-6

6

I" 456

556

456

246

246

29-Mar-01|__J29-Mar-01

29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mjr-01_J29-Ma7oi29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-01

VOCs

Benzeneug/kg ug/lSoil- -

DIWET<1.0

1.61.4

<117<1.0

0.67 J0.47 J w___ii__<108

__JLI__-_^_-_SL0___J1.61.21.6

__JLl__i <1'°1.11.0J ,___ii___

0.86 J<1.0

1.46.96 J l__ - -1.0 J

<1.01.1J1.2

<T03<1.0

<1.1<1.00.73 J

Bromodichloromethaneug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NRNRNR ( _ --NR <1.0NRNRNRNRNR . . . .... ..........

NRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNR

Bromoformug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NRNRNRNR <1.0NRNRNRNRNR"

<1.0--

NRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNR

Bromomethaneug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NRNRNR , __ --NR <1.0NRNRNRNR <1.0

_J!l5_--^__-ii___NRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0N RNR ,_ --NR

Carbon disulfideug/kg ug/lSoilNR

DIWET<5.0

NRNRNRNR <5.0NRNRNR __ _NR <5.0NRNRNRNR <5.0NR l______NRNRNRNRNR

<5.0

————————————

NRNR <5.0NRNRNRNR <5.0NRNRNR






Location Sample ID Depth Date Sampled QASBL-371 SBL-371 -COMPSBL-371SBL-371SBL-371SBL-372SBL-—— |

SBL-372SBL-372SBL-373_____ j

SJ-L-373I____ |

SBLX374 ISBL-374SBL-374SBL-374SBL-375SBL-375SBL-375SBL-375SBL-376SBL-376SBL-376SBL-376SBL-377SBL-377SBL-377SBL-377

SBL-371 A-2SBL-371 B-4SBL-371 C-6SBL-372-COMP"SBL-372A-2J!Bl..-372B;4 _____ ,SBL-372C-6SBL-373-COMP

rSBL-373A-4SBL-373B-5SBL-373C-6 ____ |

SBL-374-COMP jSBL-374A-5

lSBL-374B-5SBL-374C-6SBL-375-COMPSBL-375A-4SBL-375B-5SBL-375C-6SBL-376-COMPSBL-376A-2SBL-376B-4SBL-376C-6SBL-377-COMPSBL-377A-2SBL-377B-4SBL-377C-6

29-Mar-01 j

j _

6

246

45| _

556

456

246

246

29-Mar-0129-Mar-0129-Mar-6l

i___MM2! L_.29-Mar-0129-Mar-0129-Mar-01

[ 29-Mar-01^ 29-Mar-01

29-Mar-0129-Mar-6l29 -Mar -01 l29-Mar-0129-Mar-oi29-Mar-0129-Mar-0129-Mar-bl29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-01

———

VOCs

Carbon tetrachlorideug/kg ug/lSoil- -

<0.96<1.2<117

--<r,o__J

_<0.£§___i

DIWET<1.0

------

i__s!fiL_,L_-___ll____.

- -<108

<1.0<1.2<1.0<1.2

<1.0<1.0<1.1<1.2

<1.0<1.1

™_^H__j__™ii__.<1.1 . ii-

<1.0<1.2<1.1<103

, __ <1.0<1.1 _ ^<1.0<1.0

Chlorobenzeneug/kg ug/lSoil- -

DIWET<1.0

<6.96

<117--

<1.0 ——^ ———

<0.99<108

<1.2<1.0<1.2 L___J-l-__

<1 .0<1.0<1.1<1.2

----

<1.6_~sid___i

<1.1<i.i ^<1.0

<1.2<1.1<103

i__-_£L?__<1.1<1.0 ,_<1.0

Chloroethaneug/kg ugASoilNR __ ,NR

DIWET<1.0

--NRNRNRNRNRNRNR <1.0NRNRNRNR <1.0NR" __,NRNR --NR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNR

Chloroformug/kg ug/lSoil Dl WET

0.46 J0.84 J0.61 J<117

0.42 J<1.02.0

<1080.40 J

<1.2<1.0<1.2 L____ll___

0.38 J<1.0<1.1<1.2

6.32 J1.4 i____ll___1.2 L_____ll____

1.1 J ,___ii__0.44 J

<1.23.8

<1030.36 J

<1.1 ( __ --<1.0<1.0

Notes:QA represents sample collected as field duplicate.• - Not AnalyzedNR Not Reported Page 5 of 9 Montgomery Watson

rComposite Samples




Location Sample ID Depth Date Sampled QASBL-371 i SBL-371 -COMP j : 29-Mar-01 jSBL-371 S SBL-371 A-2 2 { 29-Mar-01 ISBL-371 I SBL-371 B-4SBL'|71___|SBL-37;1 C-6SBL-372SBL-372SBL-372SBL-372SBL-373SBL-373SBL-373SBL-373SBL-374SBi-374 'SBL-374SBL-374SBL-375SBL-375SBL-375SBL-375SBL-376SBL-376SBL-376SBL-376SBL-377SBL-377SBL-377SBL-377

SBL-372-COMPSBL-372A-2SBL-372B-4SBL-372C-6SBL-373-COMPSBL-373A-4SBL-373B-5SBL-373C-6SBL-374-COMPSBL-374A-5SBL-374B-5SBL-374C-6SBL-375-COMPSBL-375A-4SBL-375B-5SBL-375C-6SBL-376-COMPSBL-376A-2SBL-376B-4SBL-376C-6SBL-377-COMPSBL-377A-2SBL-377B-4SBL-377C-6

46

246

456

556

456 J

246

246

29-Mar-01 )29-Mar-0129-Mar-0129-Mar-01

[ 29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-01 i29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-Oi29-Mar-0129-Mar-0129-Mar-0129-Mar-01

VOCs

Chloromethaneug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NRNRNR __ i

NR <1.0NRNRNRNR <1.0NR "" --NRNRNR <1.0NRNR —— ' ——— ~ ——NR _ ,NR <1.0NRNRNRNR <1.0NRNR _J

NR

cis-1 ,2-Dichloroethyleneug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NRMRNR ,_ --NR <1.0NRNRNRNR <1.6NR t_ -•NRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNR

cis-1 ,3-Dichloropropyleneug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NR - -NR _ -T__NR - -NR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNR .

Dibromochloromethaneug/kg ug/lSoilNR

DIWET<1.0

NRNRNR

__ NR _____ <1.0

NRNRNR <1.0NR --NRNRNR <1.6NRNRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNR ^NR






Location Sample ID Depth Date Sampled QASj3LJ3i7J_^L-371-COMP j ______ L_2§-Mar-°1

SBL-371 SBL^STIAr^ _____ , 2 { 29-Mar-01SBL-371 SBL-371 B-4SBL-371SBL-372SBL-372SBL-372SBL-372SBL-373SBL-373SBL-373SBL-373__jSBL-374SBL-374 'SBL-374SBL-374SBL-375SBL-375SBL-375SBL-375SBL-376SBL-376SBL-376SBL-376SBL-377SBL-377SBL-377SBL-377

SBL-371 C-6SBL-372-COMPJSBL-372A-2SBL-372B-4SBL-372C-6SBL-373-COMPSBL-373A-4SBL-373B-5SBL-373C-6SBL-374-COMPSBL-374A-5SBL-374B-5SBL-374C-6SBL-375-COMPSBL-375A-4SBL-375B-5SBL-375C-6SBL-376-CbMP __ j

SBL-376A-2SBL-376B-4SBL-376C-6

4 | 29-Mar-016

o

46

456

29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-01

s _ 29-Mar-0129-Mar-0129-Mar-01

j 2~9~-~Mar-01556

I 456

246

SBL-377-COMP |SBL-377A-2SBL-377B-4SBL-377C-6

246

29-Mar-0129-Mar-0129-Mar-012~9-Mar-0129-Mar-0129- Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-OI29-Mar-01

VOCs

Ethylbenzeneug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NR

_~JM-_^__™1I__.NR ,_ • -NR <1.0NRNRNRNRNR

__ <UI __..... ...

NRNRNR <1.0NRNRNRNR _J__<1°__NRNRNRNR <1.0NRNRNR

Methylene chlorideug/kg ug/lSoilNR

DIWET<5.0

NRNRNR - -

__liE_i <5-°NR"NRNRNR <5.0NRNRNR __ ,NR 0.65 JNRNRNRNR 1.6JNRNRNRNR 0.67 JNRNRNRNR 0.70 JNRNR <_ --NR

Styreneug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NRNR __ ,___ --NRNRNR

- -<1.0

--NR

\-™_ju_™Jll__-NR <1.0NR _^__^___NRNRNR <1.0NRNR _, __ --NR __ (

NRNR

<1.0- -

NRNR

____NR____j <1.0NRNRNR

Tetrachloroethyleneug/kg ug/lSoil Dl WET

<1.0<0.96<1.2<117

<1.0. <1.0

<0.99<108

<1.0<1.2<1.0<1.2.

<i.b<1.0<1.1<1.2

<1.0<1.10.77 J2.7 ( __

<1.0<1.2<1.1<103

|____£K£-___<1.1 J<1.0<1.0






Location Sample ID Depth Date Sampled QASBL-371 1SBL-371-COMPSBL-371 SSBL-371A-2SBL-371SBi-371

SBL-371 B-4SBL-371 C-6

SBJ-:372__4 SBL-372-COMP }SBL-372SBL-372SBL-372SBL-373SBL-373SBL-373SBL-373SBL-374SBL-374SBL-374SBL-374SBL-375SBL-375SBL-375SBL-375SBL-376SBL-376SBL-376SBL-376SBL-377SBL-377SBL-377SBL-377

Jlk3Zl _,SBL-372B-4SBL-372C-6SBL-373-COMPSBL-373A-4SBL-373B-5 _____ (

SBL-373C-6SBL-374-COMP __ ,SBL-374A-5SBL-374B-5SBL-374C-6SBL-375-COMPSBL-375A-4SBL-375B-5SBL-375C-6SBL-376-COMPSBL-376A-2SBL-376B-4SBL-376C-6SBL-377-COMPSBL-377A-2SBL-377B-4SBL-377C-6

0

29-Mar-01 ;29-Mar-01 ;

' 4 j 29-Mar-01L 6 I 29-Mar-01I I 29"-Mar-01___J____

2 j 29-Mar-0146

456

556

4

56

246

246

29-Mar-0129-Mar-01

, __ 29-Mar-qj __ j29-Mar-0129-Mar-0129-Mar-01„„....__ j

I 29-Mar-0129-Mar-0129-Mar-OI29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-OI

VOCs

Tolueneug/kg ug/lSoilNR

DIWET0.73 Uz

NRNRNRNR <0.50 UzNRNRNRNRNRNR

__<0.52JJz_

NRNR <0.63 UzNR , __ --NRNRNR 0.63NRNRNRNR <0.47 UzNRNRNRNR <0.73 UzNRNRNR

trans-1,2-Dichloroethylene

ug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NRNRNR _^NR <1.0NRNRNRNR <1 .0NR _•.NRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNR

trans-1 ,3-Dichloropropyleneug/kg ug/lSoilNR

DIWET<1.0

NRNRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NRNRNRNR <1.0NR - -NRNRNR <1.0NRNRNR

Trichloroethyleneug/kg ug/lSoil ~^j DIWET

<1.0<0.96 i<1.2 !<117

<1.0<1.6

^ jciQ^^^^ j ____ H___<108

<1.0<1.2<1.0<1.2

<1.1<1.2

<1.0<1.1<1.1 L

<1.1<1 .0

<1.2<1.1<103

i___£L°______<i.i<1.0<1.0


Table 2AComposite Samples




Location Sample ID Depth Date Sampled QASBL-371 ;SBL-371-COMP ! { 29-Mar-01SBL-371 j SBL-371 A-2 ^~ 2 29-Mar-01 "\SBL-371 }SBL-371B-4 4SBL-371SBL-372SBL-372SBL-372SBL-372SBL-373

I SBL-371 C-6|SBL-372-COMP|SBL^72A-2SBL-372B-4SBL-372C-6SBL-373-COMP

SBl 373~^SlL-373A"-4SBL-373SBL-373SBL-374SBL-374SBL-374SBL-374SBL-375SBL-375SBL-375SBL-375SBL-376SBL-376SBL-376SBL-376SBL-377SBL-377SBL-377SBL-377

SBL-373B-5SBL-373C-6SBL-374-COMPSBL-374A-5SBL-374B-5 ____ (

SBL-374C-6SBL-375-COMPSBL-375A-4SBL-375B-5SBL-375C-6SBL-376-COMPSBL-376A-2SBL-376B-4SBL-376C-6SBL-377-COMPSBL-377A-2SBL-377B-4

rSBL-377C-6

6

246

456

556

4

29-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-0129'M5t51_j29-Mar-0129-Mar-01

5 I 29-Mar-6l6

246

2

29-Mar-01I __ 29'-Mar-01

29-™Mar-0129-Mar-0129-Mar-0129-Mar-0129-Mar-01

4 1 29-Mar-6l6 I 29-Mar-01

———

VOCs

Vinyl chlorideug/kg ug/lSoil- -

DIWET<1.0

<0.96<1.2<117

<1.0<1.0<0.99<108

<1.0<1.2<1.0

__l!A__j__. "<1.0

<1.0<1.1<1.2

<1.0<1.1 __,<1.1 u

<1.1<1.0

<1.2<1.1<103

<1.0<1.1 ,___ --<1.0<1.0

Xylenes (total)ug/kg ug/lSoilNR

DIWET<3.0

NRNRNRNR <3.0NRNRNRNR <3.0NRNRNRNRNRNR

<3.0

m

NRNR <3.0NRNRNRNR <3.0NRNRNRNR <3.0NR _ ,NRNR


Table 2BComposite Samples

Waste Burial Hole InvestigationLEHR/SCDS Environmental


Location Sample ID Date Sampled QA

SBL-371 SBL-371-COMP 29-Mar-01

SBU-372 SBL-372-COMP 29-Mar-01






Radionuclides

TritiumSoil Dl WET

Result (pci/crt MDA

27 +7-6.40 Jd 9.09

41 +7-6.81 Jd 8.88

35 +7-6.38 Jd 8.55

-1.06 +/-3.41 5.97

212 +7-11.3 Jd 8.59

17 +7-5.91 Jd 8.95

2.7 +7-3.01 UJv 5.05

Result (poi/l) MDA

1,590 +7-306 408

2,030 +7-342 439

1,860 +7-327 425

144 +7-243 413

10,500 +7-549 392

710 +/-2S3 Jv 434

81 +7-245 424

Carbon-14Soil Dl WET

Result (Dci/q) MDA

7.2 +7-0.362 0.315

6.6 +7-0.362 0.332

3.6 +7-0.296 0.33

0.49 +7-0.198 Jv 0.313

7.9 W-0.382 0.324

0.27 +/-0.198 UJv 0.326

0.073 +/-0.189 0.323

Result (pci/l) MDA

27 +/-29.2 UJv 48.9

95 +7-32.2 50.3

53 +/-30.6 Jv 49.8

9.8 +/-2S.7 49.1•96 +/-31.6 49.1

7.2 +7-28.8 49.3

-4.2 +7-28.2 49

Notes:QA represents sample collected as field duplicate. Page 1 of 9 Montgomery Watson












Metals

Hexavalent Chromiummg/kg mg/lSoil

0.47 J

<0.46

<0.47

0.13J

0.1 2 J

0.23 J

0.20 J

DIWET

<0.050 Rh

<0.050 Rh

0.027 Jh

<0.020 Rh

0.044 Jh

0.11Jh

0.28 Jh

Antimonymg/kgSoil

<0.30 UJm

<0.29 UJm

<0.30 UJm

<0.29 UJm

0.40 Jm

<0.30 UJm

<0.28 UJm

Arsenicmg/kgSoil

7.5 Jk

7.1 Jk

7.3 Jk

7.6 Jk

7.4 Jk

6.8 Jk

5.6 Jk

Bariummg/kgSoil

151

171

186

159

170

152

101

Berylliummg/kgSoil

0.50

0.45

0.50

0.42

0.48

0.45

0.47

Cadmiummg/kgSoil

<0.031

<0.029

<0.031

0.11

<0.030

<0.031

<0.028













Metals

Chromiummg/kgSoil

102

119

118

144

110

91

30

Cobaltmg/kgSoil

17

20

22

23

21

17

9.6

Coppermg/kgSoil

31

46

41

36

39

28

14

Leadmg/kgSoil

20

20

12

27

11

7.8

6.7

Molybdenummg/kgSoil

0.27

0.37

0.41

0.30

0.51

0.42

0.21

Nickelmg/kgSoil

159

214

222

314

213

153

23

Seleniummg/kgSoil

1.3

1.3

1.3

1.4

1.3

1.3

0.90

Silvermg/kgSoil

0.21

0.21

0.14

0.25

2.4

<0.099

<0.090













Metals

Thalliummg/kgSoil

<0.44

<0.42

0.49

<0.42

0.63

<0.44

<0.40

Vanadiummg/kgSoil

65

61

66

62

65

61

57

Zincmg/kgSoil

68 Jm

86 Jm

83 Jm

100Jm

76 Jm

80 Jm

32 Jm

Mercurymg/kgSoil

0.16 Jm

0.17Jm

0.14Jm

0.083 Jm

0.17 Jm

0.38 Jm

0.035 Jm

General Chemistry

Total DissolvedSolidsmg/l

DIWET

393

232

435

239

431

704

1,960

Nitratemg/kg mg/lSoil

10

32

10

4.3

3.8

9.9

8.8

DIWET

1.8Jh

0.13Jh

0.74 Jh

0.37 Jh

0.45 Jh

0.52 Jh

0.54 Jh

ReactiveReleasable

Cyanideug/kgSoil

<250,000

22 J

<250,000

<250,000

<250,000

<250,000

<250,000

ReactiveReleasable

Sulfidemg/kgSoil

<500

<500

<500

<500

<500

<500

<500













General Chemistry

Ignitability°F

Soil

>200

>200

>200

>200

>200

>200

>200

CorrosivitySUSoil

8.0

7.9

8.0

8.1

8.0

7.9

8.1

Pesticides and PCBs

4,4'-DDDug/kgSoil

<3.9

<3.8

<3.8

<3.7

<3.9

<3.7

<3.6

4,4'-DDEug/kgSoil

2.3 J

1.6Ju

<3.8

0.40 J

0.46 J

<3.7

0.14J

4,4'-DDTug/kgSoil

9.1 Juc

11 Ru

<3.8 UJc

1.6Ru

<3.9 UJc

<3.7 UJc

<3.6 UJc

Aldrinug/kgSoil

<2.0

<1.9

<2.0

<1.9

<2.0

<1.9

<1.9

alpha-Chlordane

ug/kgSoil

0.74 Ju

0.55 Ru

0.53 Ju

0.81 J

0.68 J

0.84 J

0.34 J

Aroclor-1016ug/kgSoil

<39

<38

<39

<37

<39

<37

<36


<39

<38

<39

<37

<39

<37

<36




Sample identification




SBL-373 SBL-373-COMP 29-Mar-01 '





Pesticides and PCBs


<39

<38

<39

<37

<39

<37

<36

Aroclor- Aroclor-1242 1248ug/kg ug/kgSoil Soil

<39 <39

<38 <38

<39 <39

<37 <37

<39 <39

<37 <37

<36 <36


<39

<38

<39

<37

<39

<37

<36


18 Ru

55 Ju

<39

<37

<39

<37

<36

Dieldrinug/kgSoil

<3.9

<3.8

<3.8

<3.7

<3.9

<3.7

<3.6

Endrinug/kgSoil

<3.9 UJc

<3.8 UJc

<3.8 UJc

<3.7 UJc

<3.9 UJc

<3.7 UJc

<3.6 UJc

gamma-BHC(Lindane)

ug/kgSoil

<2.0

<1.9

<2.0

<1.9

<2.0

<1.9

<1.9

gamma-Chlordane

ug/kgSoil

0.92 Ru

0.38 Ru

0.62 J

0.68 J

0.58 Ju

0.80 J

0.35 Ju













Pesticides and PCBs

Heptachlorug/kgSoil

<2.0

<1.9

<2.0

<1.9

<2.0

<1.9

<1.9

Methoxychlorug/kgSoil

<20

<19

<20

<19

<20

<19

<19

Mirexug/kgSoil

<4.7

<4.6

<4.7

<4.5

<4.7

<4.5

<4.4

Toxapheneug/kgSoil

<199

<194

<198

<193

<199

<193

<187













Semi-Volatile Organic Compounds

1 ,4-Dichlorobenzeneug/kgSoil

<391

<381

<389 UJs

<378

<391

<378 "

<367

2,4,5-Trichlorophenol

ug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

2,4,6-Trichlorophenol

ug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

2,4-Dinitrotolueneug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

Hexachiorobenzene

ug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

Hexachiorobutadiene

ug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

Hexachioroethaneug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367




Sample identification









Semi-Volatile Organic Compounds

Keponeug/kgSoil

<388

<378

<386 UJs

<375

<387

<375

<363

m,p-Cresolsug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

Nitrobenzeneug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

o-Cresolug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

Pentachlorophenolug/kgSoil

<391

<381

<389 UJs

<378

<391

<378

<367

Pyridineug/kgSoil

<388

<378

<386 UJs

<375

<387

<375

<363


Table 3Discrete Soil Samples



1 Sample Identification

ocation Sample ID Depth Date Sampled QABL-390 SBL-390-15.5 15.5 28-Mar-01

SBL-390 SBL-390-17.5 17.5 28-Mar-01SBL-390 SBL-390-19 19 28-Mar-01SBL-391 SBL-391 -15.5 15.5 27-Mar-01SBL-391 SBL-391 -17.5 17.5 27-Mar-01SBL-391 SBL-391 -19 19 27-Mar-01SBL-392 SBL-392-15.5 15.5 28-Mar-01SBL-392 SBL-392-17.5 17.5 28-Mar-01SBL-392 SBL-392-17.5D 17.5 28-Mar-01 DUPSBL-392 SBL-392-19 19 28-Mar-01SBL-393 SBL-393-15.5 15.5 26-Mar-01SBL-393 SBL-393-17.5 17.5 26-Mar-01SBL-393 SBL-393-19 19 26-Mar-01SBL-394 SBL-394-15.5 15.5 28-Mar-01SBL-394 SBL-394-17.5 17.5 28-Mar-01SBL-394 SBL-394-19 19 28-Mar-01SBL-395 SBL-395-15.5 15.5 26-Mar-01SBL-395 SBL-395-17.5 17.5 26-Mar-01SBL-395 SBL-395-19 19 26-Mar-01SBL-396 SBL-396-15.5 15.5 26-Mar-01SBL-396 SBL-396-17.5 17.5 26-Mar-01SBL-396 SBL-396-19 19 26-Mar-01SBL-397 SBL-397-15.5 15.5 28-Mar-01EBL-397 SBL-397-17.5 17.5 28-Mar-01lBL-397 SBL-397-19 19 28-Mar-01ISBL-398 SBL-398-15.5 15.5 27-Mar-01JSBL-398 SBL-398-17.5 17.5 27-Mar-01JSBL-398 SBL-398-19 19 27-Mar-01SBL-399 SBL-399-15.5 15.5 27-Mar-01SBL-399 SBL-399-17.5 17.5 27-Mar-01ISBL-399 SBL-399-19 19 27-Mar-01

Radlonuclldes

Carbon-14

Soil Dl WETResult (pci/g) MDA Result (BCi/l) MDA

025 +/-0.231 UJv 0.3840.069 +7-0.227 0.389 1.6+7-28.6 49.40.21 +7-0.230 UJv 0.3860.27 +7-0.237 UJv 0.394

0.041 +/-0.215 0.3713.1 +/-27.1 45.70.3 +/-0.240 UJv 0.398

0.36 +/-0.232 UJv 0.3790.07 +7-0.221 0.3780.42 +7-0.242 Jv 0.393

8.3 +7-28.8 49.4-26.6 +7-27.5 49.3

0.31 +7-0.235 UJv 0.3880.42 +7-0.192 Jv 0.3060.56 +7-0.265 Jvd 0.424 •1.55+7-28.2 48.90.32 +7-0.196 Jv 0.320.25 +/-0.233 UJv 0.3880.3 +7-0.228 UJv 0.377 3.1 +7-28.3 48.9

0.38 +/-0.233 Jv 0.3810.4 +/-0.202 Jv 0.325

0.66 +7-0.274 Jvd 0.433 5.1 +1-28.5 490.65 +/-0.206 0.3180.67 +7-0.206 0.3170.44 +7-0.267 Jvd 0.435 5.6 +1-28.6 49.20.48 +7-0.203 Jv 0.3220.33 +7-0.233 UJv 0.3830.47 +/-0.236 Jv 0.379 -2.64 +/-2B.2 48.90.66 +/-0.246 0.3861.1 +/-0.265 0.393

0.41 +/-0.238 Jv 0.3870.64 +/-0.248 Jv 0.3910.46 +7-0.232 Jv 0.3730.29 +7-0.230 UJv 0.381

14 +7-27.5 46.8....

7.2 +7-27.3 46.80.28 +/-0.234 UJv 0.388

Tritium

Soil Dl WET

Result (pciW MDA Result fpcW) MDA

0.39 +7-1.77 UJv 3.070.74 +/-1.71 2.940.96 +7-1.89 3.22

35 +7-5.03 6.2633 +7-5.29 6.81

-34.6 +1-242 428....

491 +7-257 Jv 40938 +7-5.33 6.58

3.9 +7-1.86 Jv 2.936.3 +A2.92 Jv 4.586.7 +7-2.06 3.04

291 +7-242 UJv 399355 +/-2S4 UJv 414

3.6 +7-2.81 UJv 4.615.1 +7-3.82 UJv 6.311.4 +7-3.44 5.88255 +/-24S UJv 412

455 +7-16 8.933.1 +7-3.29 UJv 5.51.2 +/-1.72 UJv 2.9 12 +7-240 4201.7 +/-1.76 UJv 2.94

-1.91 +/-3.S6 6.281.1 +7-2.34 4.0 57 +/-231 4002.0 +7-3.66 6.267 +7-7.68 8.86

133 +7-6.06 4.1 4,310 +7-396 • 4001 1 Jv +7-5.43 8.60.58 +7-1.78 3.071.9 +/-1.74 UJv 2.88 186 +/-24S UJv 4191.8 +/-1.81 UJv 3.02

0 +/-3.6S 6.366.1 +7-3.73 UJv 6.09-32.2 +7-235 415

2 +1-2.57 UJv 4.32-1.43 +1-3.55 6.35

1.5 +1-3.63 623 99 +7-239 4100.49 +7-3.69 6.43

Metals

HexavalentChromium

mg/lDIWET

-.0.0066 Jh

.-

--

<0.020 Rh----

0.014 Jh0.022 Jh

.-

..<0.050 Rh

----

0.0089 Jh----

0.010 Jh--.-

0.0066 Jh.---

<0.020 Rh.-

<0.020 Rh-..-

<0.020 Rh--

General Chemistry

Chloroformug/kg ug/lSoil Dl WET--

<1.2 0.47 J-...

<1.2 <0.73 Uz....

<1.1 0.53 J<1.1 0.44 J....

<1.1 0.43 J....

<1.2 0.47 J..

--<1.3 0.44 J....

<1.3 0.54 J--..

<1.0 '0.47J....

<1.2 <0.66 Uz....

<1.0 <0.59 Uz--

Nitratemg/kg mg/lSoil..37

DIWET.-

1.3JH....

9.6 1.1 Jh....

3418

1.9Jh1.3Jh

..

..

37 Jm 1.3....20 0.73 Jh....

15 Jm 0.56....

17 Jm 1.7....29 1.6Jh....

8.0-.--29

0.44 Jh----

1.2Jh.. • ..

TotalDissolved

Solids

mg/lDIWET..--..--

136--------.-..

359----------

111----

150--------

115-.--93--

Volatile Organic Compounds

2-Butanoneug/kg ug/lSoil DIWET

<5.8 <5.0

j

<5.8

<5.4--

<5.4

<6.1

<5.0

1.1 J<5.0

<5.0

<5.0

<6.5 <5.0

<5.8 <5.0

<5.3 <5.0

2.4 J <5.0

<5.1 <5.0

Acetoneug/kg ug/lSoil | Dl WET.. : ..-- l<2.8 Uz

<5.0

..

<2.6 Uz-- i<2.9 Uz

j

2.8 J

<3.2 Uz

2.6 J

1.7J

<3.2 Uz

<5.0

<5.0I

Benzeneug/kg ug/lSoil

0.51 J

DIWET

<1.0

1.1 J j <1.0i

.. ! ..

0.53 J I <1.00.58 J i <1.0

1

0.59 J

0.63 J

<1.0

<1.0

1

0.63 J <1.0

0.70 J <1.0

0.53 J <1.0

0.62 J <1.0

0.56 J <1.0

Methylenechloride

ug/kg ug/lSoil Dl WET

<5.0

<5.0

<5.00.85J

<5.0

<5.0

i<5.0

-- ! <5.0

1.9 J

<5.0

<5.0

Tolueneug/l

DIWET

<0.65 Uz

<1.0

<0.60 Uz0,69 Uz

<0.40 Uz

<0.53 Uz

<0.36 Uz

<0.40 Uz

<0.56 Uz

<1.0

<1.0

Notes:QA represents sample collected as field duplicate.- not analyzed Page 1 of 1 Montgomery Watson

TabletIn-Situ Groundwater Samples




Location Sample ID Depth Date Sampled QA

SBL-391 HP-391-40 40 27-Mar-01

SBL-393 HP-393-43 43 26-Mar-01

SBL-395 HP-395-39 39 26-Mar-01

SBL-396 HP-396-39 39 26-Mar-01

SBL-399 HP-399-49 49 27-Mar-01

SBL-399 HP-399D-49 49 27-Mar-01 DUP

Radionuclides

Carbon-14

Result (pGi/l) MDA

208 +/-34.S 48.2

103 +/-31.6 48.8

306 +/-S7.6 48.7

785 +/-59 64.3

353 +1-38.4 48

271 +/-S6.9 49.2

Tritium

Result (pCi/l) MDA

282 +A276 UJv 459

329 +/-280 UJv 462

199 +/-270 UJv 457

36,500 +/-1050 455

95 +/-266 459

162 +/-269 457

Metals

Dissolved Chromiumug/l

14

44

52

1.8

2.1

2.0

General Chemistry

Nitratemg/l

11

19

41

36

35

33

Total DissolvedSolids

mg/l

890

1,020

1,700

1,610

1,470

1,460


Table'4In-Situ Groundwater Samples




Location Sample ID Depth Date Sampled QA

SBL-391 HP-391-40 40 27-Mar-01

SBL-393 HP-393-43 43 26-Mar-01

SBL-395 HP-395-39 39 26-Mar-01

SBL-396 HP-396-39 39 26-Mar-01

SBL-399 HP-399-49 49 27-Mar-01

SBL-399 HP-399D-49 49 27-Mar-01 DUP

Volatile Organic Compounds

1 ,2-Dichloropropaneug/l

<1.0

<1.0

<1.0

<1.0

0.16 J

0.16 J

2-Butanoneug/l

<5.0

<5.0

<5.0

<5.0

<5.0

<5.0

Acetoneug/l

<5.0

<5.0

<5.0

<5.0

<5.0

<5.0

Benzeneug/I

<1.0

<1.0

<1.0

<1.0

<1.0

<1.0

Chloroformug/l

1.3

0.42 J

<1.0

0.19 J

<1.0

<1.0

MethyleneChloride

ug/l

<5.0

<5.0

<5.0

<5.0

<5.0

<5.0

Tolueneug/l

<1.0

<1.0

<1.0

<1.0

<1.0

<1.0


Hazardous Waste, PRG and Background EvaluationLEHR/SCDS Environmental Restoration University of California, Davis

AnalyteTritiumCarbon-14AntimonyArsenicBariumBerylliumCadmiumChromium VIChromium IIICobaltCopperLeadMercuryMolybdenumNickelSeleniumSilverThalliumVanadiumZincAldrinChlordaneDOTDDEODDDieldrinDioxinEndrinHeptachlorKeptoneLindane\/lethoxychlorPentchlorophenolPCBToxapheneTrichloroethylene2,4,5-triclorphenoxypropionicacidCarbon TetrachlorideChlorobenzeneChloroformo-Cresolm-Cresolp-CresolCresol2-4D1 ,4-Dichlorobenzene1 ,2-Dichloroethane1 ,1 -Dichloroehtylene2,4-DinitrotolueneHeptachlorHexachlorobenzeneHexachlorobutadieneHexachloroethaneMethy Ethyl KetoneNitrobenzenePyridineTetrachloroethylene2,4,5-Trichlorophenol2,4,6-Trichlorophenol2,4,5-TPVinyl Chloride

Hazardous WasteTTLC Wet-Weight

mg/kg 5

500500

100007510050050080002500100020

35002000100500700240050001.42.51118

0.010.24.7214

10017505

2040

10

_.

Hazardous WasteTCLP x 20mg/kg 5

102000120

400040004000400020015010142.60.162.61060

400040

L 10014

800040204

Hazardous WasteSTLCxlO

mg/kg5

15050

10007.5105050800250502

35002001050702402501.42.51010108

0.010.24.7214

100175050

2040

10

PreliminaryRemediationGoals (PRG)

mg/kg(Residential) 6

1 1 ,OOOpCi/g770pCi/g

310.39 1

54001509 2

30 3

100,0004700290040023390

16004

3903905.2550

23,0000.02

21.71.72.4

0.030.00000390

180.110.027

3103

0.220.442.8

4900.241500.24***

***

***

***

6903.4

0.350.0541200.110.36.235

720020615.7

610044***

0.15

BackgroundLEHR/SCDS

mg/kg7

1.2pCi/g0.13pCi/g

1.49.62600.720.510.05418131609.5

0.630.263301.2

0.551.67787

WBHReported

Value mg/kgNDto212ND to 7.9

ND to 0.405.6 to 7.6101 to 186

0.47 to 0.50ND to 0.11ND to 0.4730 to 1449.6 to 2314 to 466.7 to 27

0.35 to 0.380.21 to 0.4223 to 31 4

0.90 to 1.4ND to 2.4

ND to 0.6357 to 6632 to 100

ND*0.34 to 0.81*

NDto11*ND to 23*

ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*

ND*ND*ND*

ND to 3.8*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*ND*

ND to 0.77*ND*ND*ND*ND*

1 - cancer endpoint2,3,4 - CAL-Modified PRG (PEA, 1994)5 - Title 22 section 66261.246 - Preliminary Remidation Goals, 11/01/007 Final Technical Report: Results of Western Dog Pens, Background and Off-Site Investigations, Weiss Associates.* ug/kg*** No PRGShaded # is over background

Montgomery Watson

TaDesignated Level Methodology Evaluation

LEHR/SCDS Environmental Restoration University of California, DavisSite Samples

Environmental ExceedWater Quality Attenuation Site Specific Soluble WET Sample Designatied

Analyte Goal1'2 Units Factor3 Designated Level Analysis Range4 LevelTritiumCarbon-14Nitrate-NTDSCrVIChloroformVOC's Dichloromethane

20000 1

50 2

27.4 2

788 2

44 2

<0.55

5

pCi/LpCi/Lmg/Lmg/Lug/Lug/Lug/L

100100100100100100100

200,000 |NDto10,OOQ±5495002747880440550

NDto(<14)0.44 to 1 .993 to 1960

<0.01 to 0.28<0.32 to 0.530.65 to 1 .9

NoNoNoNoNoNoNo

TritiumCarbon-14Nitrate-NIDSCrV!ChloroformVOC's Dichloromethane

20000 1

50 2

27.4 2

788 2

44 2

<0.55

5

pCi/LpCi/Lmg/Lmg/Lug/Lug/Lug/L

10101010101010

20,00050

27.4788440.55

NDto10,000±549NDto(<14)0.44 to 1 .993 to 1960

<0.01 to 0.28<0.32 to 0.530.65 to 1.9

NoNoNo

YesNoYesNo

1 Based on Federal and State MCL2 Based on background concentrations3 Site Specific Soluble Designated Level = Water Quality Goal x Env Attenuation Factor /104 WET data taken from Tables 2B and 35 Method detection limit

Montgomery Watson

LEHR QUALIFIERS AND REASON CODE DEFINITIONS

REASON CODESa Analytical sequence deficiency or omission.b Gross compound breakdown (4,4-DDT/Endrin).c Calibration failure; poor or unstable response.d Laboratory duplicate imprecision.e Laboratory duplicate control sample imprecision.f Field duplicate imprecision.g Poor chromatography.h Holding time violation.i Internal standard failure.j Poor mass spectrographic performance.k Serial dilution imprecision.1 Laboratory control sample recovery failure.m Matrix spike/matrix spike duplicate recovery failure.n Interference check sample recovery failure.o Calibration blank contamination (metals/inorganics only).p Preparation blank contamination (metals/inorganics only).q Quantitation outside linear range.r Linearity failure in initial calibration.s Surrogate spike recovery failure

(GC organics and GC/MS organics only),t Instrument tuning failure.u No valid confirmation present (GC Organics only),v Value is estimated below the MDA (Rads only).w Retention time (RT) outside of RT window,x Field blank contamination,y Trip blank contaminationz Method blank contamination.Q No valid confirmation column (GC Organics only)

DATA QUALIFIERS

U The analyte was analyzed for, but was not detected above the adjusted samplequantitation limit due to contamination from an outside source such as laboratorycontamination.

J The analyte was positively identified but the associated numerical value may notrepresent the actual concentration of the analyte in the sample due to analyticalbias in precision or accuracy, or because the resulting concentration has beenreported at a confidence level less than 99%.

UJ The analyte was not detected above the reported sample quantitation limit.However, the reported quantitation limit is approximate and may or may notrepresent the actual limit of quantitation necessary to accurately and preciselymeasure the analyte in the sample.

R The sample results are rejected due to serious deficiencies in the ability to analyzethe sample and meet quality control criteria. The presence or absence of theanalyte cannot be verified.

Figures

MONTGOMERY WATSON

/ •\-irar®

SITE LOCATION

REFERENCE: USGS 7.5 Quadrangle; Merrltt, CA, 1952, photorevlsed 1981and Davis, CA, 1952, photorevised 1981.

adrangleLocation

MONTGOMERY WATSONLEHR/SCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIAWASTE BURIAL HOLES

CHARACTERIZATIONScale in Feet

EXPLANATION• — — - Campus Boundary

Project BoundarySITE VICINITY MAP

FIGURE 1SOURCE: DAMES & MOORE

JOB No.. FILE: SAC1_IFOSERVER\SAC INDUSTFI I I I 1 1 I I I I 11 III l^fc' IORKPLAN\UNiT2.DWG REV. 9/29/00 AS

'/ ' >'f/f

I I 'I

I a.

i=n —— oi

Oncoloq'

i , , — n -H

< Laboratory' ,'rj—California'', CeTrjter—for- Eqt)ineHealth-and-Performonee"

150 300!E^ i5

SCALE IN FEET

Western / /Landf i l lDog Pens) f Disposal

,1 Unit #2

LandfillDisposaUnit #3

Eastern1 Dog Pen D D\ a <a \

LandfillDisposalUnit #1

Souffiwest-^'

South Fork Putah Creek

EXPLANATION,...,.. Campus BoundaryH DOE Responsibility (within LEHR Site)

S UC Davis Responsibility Areas (SCDS)

SOURCE: DAMES & MOORE



CHARACTERIZATION

WASTE DISPOSAL UNITS

FIGURE 2

WEST EDGEOF EXCAVAE20

EAST EDOF EXCAVATIONE300

EXPLANATION:

E20, S10 East and South Stationing

Sorted Soil

NOTE:Plastic Fence was Placed Below, Above, andon the West, East and South Side of the LLRWand PMW Soil.

+ Composite SamplingLocations

Clean Imported Soil


DAVIS. CALIFORNIAWASTE BURIAL HOLES

CHARACTERIZATION

COMPOSITE SAMPLELOCATION MAP

FIGURE 3SOURCE: DAMES & MOORE

WEST EDGEOF EXCAVATIONE20

soo

S30

20_iScale in Feet

EXPLANATION:Previous Soil Sample Location(Dames & Moore, 2000)

Waste Burial Holes Removed(Dames & Moore, 2000)D

E20, S10 East and South Stationing

A Soil Boring Location

Soil Boring Location withGroundwafer Grab Sample

EAST EDGEOF EXCAVATIONE300

CiSOURCE: DAMES & MOORE


DAVIS. CALIFORNIAWASTE BURIAL HOLES

CHARACTERIZATION

SOIL BORINGLOCATION MAP

FIGURE 4

CLoQ.

25o;

Q6

QQ

2a.QO

LU

-aa

mo

ÂPPROXIMATE FORMER WBH South Fork Putah CreekAREADIRECTION OF

HSU-1GROUNDWATERFLOW

0 200 400^gEsasmiiSCALE IN FEET

EXPLANATION1-11 HSU-1 Monitoring Well A STPO Surface Water Sample Location

--UCD2-17 HSU-2 Monitoring Well AlF-1 Storm Water Sample Location-iJ5-EW2-1 HSU-2 Extraction Well-$-IW2-1 HSU-2 Injection Well-^-UCD4-33 HSU-4 Monitoring Well




CHARACTERIZATION

WELL LOCATION MAPFIGURE 5

WestArO

-40

-80

UCD4-44 UCD4-41

UCD4-42(Former Nishi UCD4-33

Well Retrofitted) (Abandoned)

EastA'r 80

UCD4-43

Oi

o>o

OT•o3OO

10)mf0)D

-120

-160

- 200

- 240

- 280

L320

n i '• ii iiu LLLU

/ - , / - v ' / r s i r r r i

-,i,-HSU-1,f'i.i!'f" Approximate Historical'

, Range of Water Levels•

-40

-0

- -40

O

- -12001

- -160

- -200

- -240

-280

EXPLANATION

UCD4-43 HSU4 Monitoring Well:: Screened Interval

TD=29s Total Depth of Boring in feet———— Geologic Contact——?— Geologic Contact Uncertain

Source: Dames & Moore

Fine Grained Silty Sand (SM)

Interbedded Clayey Silt (ML) toSilty Clay (CL)Fine to Coarse Grained Sand (SP)Coarse Grained Sandy Gravel (GP)Silt (ML) With Some Sand and Clay

60 i

Scale in FeetVertical Exaggeration: 1 Jx UCD4-44

UCD4-33 ' UCD4-43(Abandoned) \

NNot to Scale

Cross-Section Location Map

MONTGOMERY WATSON


Waste Burial Holes Characterization Sampling Report

GENERALIZED HYDROSTRATIGRAPHICCROSS-SECTION

FIGURE 6

Appendix A

MONTGOMERY WATSON

Appendix ASummary of IRA Analytical Results-Waste Burial Holes

\\Ussacls-ifosvi\sac industrial\Project\LEHR\WBH_Misc\WBH Report-Draft.doc

DRAFT FINALINTERIM REMOVAL ACTION WORK PLAN - APPENDIX C

WASTE BURIAL HOLESSCDS ENVIRONMENTAL RESTORATION

DA VIS, CALIFORNIA(DAMES & MOORE, 1999)

MONTGOMERY WATSON

J:\Projwt\LEHR\WBH Po« Canst. WPWBH CSWP.doc

TABLE C-lSUMMARY OF ANALYTICAL RESULTS FOR SOIL GAS SAMPLING

IRA WORK PLANWASTE BURIAL HOLES

SCDS ENVIRONMENTAL RESTORATIONDAVIS, CALIFORNIA

Parameter

UnilsPRO

Background (2)Sampling Cvcn( Location Sample Depth (1) Type QA1995 Soil Gas Wane Burial Holes Sampl

'

SGL0046

SGL0047

SGL0048

SGL0049

SGL0050

SGL0051

SGL0052

SGLOOS3

SGL0054

SGL0055

SGUT0029SGUT0030SGUTOOJISGUTOOJ3SGUT0034SGUT0035SGUT0036SGUT0037SGUT003SSGUT0039SGUT0040SGUT0041SGUT0042SGUT0043SGUT0044SGUT0045SGUT0046SGUT0047SGUTOOaSGUT0049SGUT0050

03.010006003.010003010.003.010003.010.003.010,003.010.003010003.0100

03.0100

Chloroform

(UB/L)250--

<0.0003<00003<0.0003

0.020.3

<O.OQ03<0.0003<0.0003

0.1<0.0006<0.0003<0,0003

0.090.02

7<0.0006<0.0003<0 0003

O.MS0.0007<00003

(1) - Wet AnaJyiis in unm (mg/L. ug

(2) - Draft EE/CA Tor Sotiihwiil Trenches Ra/Sr TrcilmuilSyflcml and Domeilic Speciic Areas, Weiss Associilef,November 1997O - Qugljcilc Simple

TABLE C-2SUMMARY OF ANALYTICAL RESULTS FOR SOIL SAMPLING



Sampling Event995 Wule Burial Hotel Soil Sampling

1996 Wulc Burial llolci Soil Sampling

LocationSBLOOJ2

SSWBOOIISSWBOOI9TRL0049

TRL0050

TR1.005I

TRL0052

TRL0053

TRL0054

SampleSSUT002ISSUT0033SSUT0024SSUT0027SSUT003ISSUT0034SSWBOOUSSWBOOI9SSWBOOOISSW00002SSW80003SSWB0004SSWB0005SSWB0006SSWB0007SSWB0008SS\VB0009SSWBOOIOSSWBOOUSSWBOOI2SSWBOOUSSWBOOMSSWBOQI5SSWBOOI6SSWBOOI7

Depth

06.501500350009.00020002.000700050003.500525070007.00100010.0009.001000120009:00

11.0007.00120012.0007.00

Parameter

UnitsPRO

Background (2)(1) Type QA

W

W

WASTE

WASTE

WASTE

WASTEWASTE

WASTEWASTE

WASTE

WASTE

WASTE

D

(mgttg)0.329.46

ri7.17.J8.41.17.97J7.9•1.49J9.112.91.9

<000310.4

<OOI ' B|9.09J8.59.49.27.88.910.2

Chromium

(nig/Kg)210178

i7sWISO10492.4122157 N|)mHO N|)m85.5 N'l'd120 N'JJU127 N'|)d174 N'|Jd114 N'|IJ

<0.006103 N'|Jd

<0.006117 N«|ld134 N'|)d

96.2 N'l'd125 N'|IJ131 N'|ldill N|lm12$ N|Jm144 N|Jm

Lead

(mgACj)13010.1

9l10.856.79J10.512.18.59J13.48.1

64.47J9J

<00027.4

<000220J34.07.111. 17.410 38.6IOJ

Mcicury Niifiic-n

(mg/Kg) (mj/Kg)6.5

0.-19 16

W60.180.14<OIO.MOJ40.51 N|Irn0.59 N|Jra0.31

<O.I2U

0.410.11

<000020.13

<000020.210.53

<0 I I1.4

0.260.51 N|lm

<0 12 N|UJm0.19 N|Jm

2.10.814.6555.926

0.502.647. ll|Jh4.7 H|Jh2J H|J||3.6 l||Jh11.3-« H|lh11.4.0 H|)h15.11057.41090.36.25,15.

lIcKachlarobcnzcnc NaphlMcnc

(ui'Kg) (us^Kgl28

<390<370<I900<400<420<410<350<370<440<380<370<3>0O80<ll |UJiO80<ll |Uh<400<310<170<3SO<380O70

• <3JO<460

<390<370<I900<400<420<4IO<350<370<440<380<370<3«01700 |l|<I3 |U)i<380'II |UJ>410 |l|1200<370<J80<38092MO<380<460

(2) - Draft EE/CA for Soudiwot Ticnchcj fU/Sr TuitmeniSjntcna «nd CtamrtBC Sptcric Arcu, Wcist Aiioc'nic*.Novonbd 1997D - Duplicate Sunptc

TABLE C-2 (CONTINUED)SUMMARY OF ANALYTICAL RESULTS FOR SOIL SAMPLING



Paxamelcr

UnilsPRG

Background (2)Simpling Evenl t.ocnlion Simple Dtplh (1) Type QA

1995 W»iic Buriil Hold Soil Sampling

1 996 Wutc Ouritl Holci Soil Sunpling

SBL0032

SSWBOOI8SSWBOOI9TRL0049

TRL0050

TRL005I

TRL0052

TRL0053

TRI.0054

SSUT002ISSUT0033SSUT0024SSLTTO027SSUT003ISSUT0034SSWBOOI8SSWBOOI9SSWBOOOISSWB0002SSWB0003SSWB0004SSWB0005SSWBOOOS

SSWB0007SSWBOOO«SSWB0009SSWBOOIOSSWBOOIISSWBOOI2SSWBOOI3SSWBOOI4SSWBOOISSSWBOOI6SSWBOOI7

0650150035.0009000200020007.0005.0003.5005.1507.00070010.00100009.001000120009.0011.0007.0012.0012000700

W

W

WASTE

WASTE

WASTE

WASTEWASTE

WASTEWASTE

WASTE

WASTE

WASTE

D

4.4'-ddc 4.4'-ddi

(U&/KB) ("ivKs)1300 1300

<39O7<I8<4

<4 10) 1

<3.5 J|O7 J|31

OS<3.a<38O 8 JP|Ju

<O.I3<39<O.I2<4I<38<37<39<3.8<3.7 J|<39

<46

<39<37<ia<4 1<4 1<4 1<3 5 |UJc<3.7 J|UJc9.7O.8<3.8<3.8<3.8 J|<O.I3<39<0 12<4 1<38<37<3.9

. 0.8O7 JP|RuO 9 |Ulc<46 |UJc

Alpha-chtordanc

(us/Kg)340

3.t<I9<92<2

<2I<2

1.1<l.l JP|UJu<22<194.2

<I92.1

<0064<l.9<006

4.13.2 P|Ju<I9<2

<I9<I9 J|<I9<23

Oieldfin

<"S/KS)28

O.9<37<I8<4I

<4 1<4 1OS J|O7<440!O.8Ol01<OI3O9<OI2<4 1<38<37O908.07O9

<46

Garnnu-chlordanc

(US/KS)340

3.7<l 9<92<!

<7 1<72J<l 8 J|<22<I95.4<192.9

<0064<I9<006S.I3.4<|9<2

<I9<I9 J|<l 9

<23

Cnbon-14

(pCi'u)909 -0.87

J.Sti.iI.OJtO.54

54. 4*4.80.9*1.4

I.9M.296H.7

< -22 i58 |ld< I 5 ± S 4 |IJ<-0 2*5 9<07*50<-i3*54<-3 7»5 532.7*8.185J 0*470<.54 i54I3S.U6.

• 230.t21.23.6*7.9 |)d15.7*7.3 jld55-tll. |W

<-0 US 0 |Jd1441.1(4. |JJ<l 4i6 1 |IJ

<Mi62 |JJ100.13 |)J

(1) - Wet An Jyiii in unio (mj/L. uj/L, pCi/L)(2) - Dnfl EE/CA,for Souihwal Tlcncha R«/Sr TicilmenlSyflcnB m^ Oomcxdc Spcclic Ajeu, Wciu Aisociilcl.;Novcroba 1997D - Dupiicuc Sun<ple




Parameter

UnitsPRO

Background (2)Simplini Evtnl LoMlion Sample Deplh (t) Type QA

1995 Waste DuriaJ Hole. Soil Sampling

1996 Wulc Burial Holei Soil Sampling

SBL0032

SSWBOOI8SSWBOOI9TRL0049

TRL0050

TRL005I

TRL0052

TRL0053

TRL0054

SSUT002ISSUT0033SSUT0024SSUT0027SSUT003ISSUTOOJ4SSWBOOIISSWD0019SSWQ0001SSWB0002SSWB0003SSWB'0004sswnooosSSWB0006SSWB0007SSWBOOOSSSWB0009SSWBOOIOSSWBOOI 1SSWBOOI 2SSWBOOI3SSWBOOI4SSWBOOI 5SSWBOOI6SSWBOOI7

06.501500150009.0002.0002.00070005.0003.500525070007.001000100009.0010.0012.000900110007.0012.0012.0007.00

W

W

WASTE

WASTE

WASTE

WASTEWASTE

WASTEWASTE

WASTE

WASTE

WASTE

D

Cesium-13?

(pCi/g)

0.053

0.013*0.0)50.01910.0)1-0.18*0.150.011*0.0130.008*0.015-OOI9±0.03

<0 019*0.02!<0.024±0.029<0.020±0.027<-0.03l±0022•=•0.006*0.030<-0003±00|7<0 001*0015

<-4.0±3.4<-0.017±0.032

<0.8±5.9<-0.009±O.OI2<-0022±0.020<0 021 ±002 80.08410.07.7

<0.0 11*0.0403.2810J5

<0004±0021<-0.006±0.02l

4610*460

Gross Alpha

(pCi'g)

11.8

11.4*5.43.9*3.1£±J. a

M*4.64.1*3.95.6*4

<J6±4.9 C|<4.7±4.S C|

<|.03±0.82 |ll1.8*1.1 |ll2.8*1.4 |)l

<1. 13*097 |JI<5 5*4 9 C|<l.±l.2 C|ll<5t9±4.5 C|£.2*1.8 |J16.9*4.< C|O 0*3 « C|<4 6*4 2 C|8.9*5.5 C|<3.l±4 1 C|<4.7±5 4 C|10J±5.5 C|<6 2*4 7 C|<0.4*3 4 C|

Gioss Bell Radium-226 Sr-89.90

(pCi'g) (pCi/8) (PC,/S)

11.8 0.77 036

15.8*4.1MtJ.7J57±1712.9*3.915J*4

14J*4.1li.O*4.S11.1*3.11J6*0.61I.79*0.<S

<l 21*0.901.90*0.9126J*4.612.6*1.015J*4.14.6*1.554.7*6.733.9*5.218.9*4.271.5*7.6I5,1*4J8<4.*49.16,6*4.417.0*4.5

4280*220

0.25*0.170.24*0.17OJIiO.J0.41*0.110.33*0.190.6410.21<0.74*0 24 |Ul<0.56±0.20 |Ui0.58*0.260.63*0.240.56*0.230.6U0.200.78*0:24

<052±0680.43*0.18

<0.79*0.690.43*0.20

<0.«4tO 25 |Uz<0 77*0 25 |Uj<0 30*0 15 |Ul<0 65*0 20 |Ui<0 56*0 21 |Ul<0 59*021 |Ut<0 60*0 21 |Uz<0 26*0 17 |U£

0.19*0.5•03*063

•045*056•03*0550.11*0.61•038*050.53*0 Jl |Jd<0 28*0 29 |Jd<0 69*0.39 B|Ui<0.9I*047 D|Ui<6 59*0 35 B|Ui<0 44 tO 2 5 B(Ui0.9UOJ1 |Jd<0?*l 2

<0 161010 |)J<l 1*1 1

<0 33*0 31 |)d<007t030 |1J<0 24.0 30 |Jd<0 3itO 30 |Jd0.56*OJ3 |ld<0 17*0 31 |jd25.5*1.6 |ld

<0 22*0 27 |Jd1.06*031 |IJ

(I) - Wet Aflilyiis in uniu (mg/L, u|/L, pCi/L)(1) - DnA EE/CA for Souihwcn Trenches RVSr TieilmcnlSyrami md Domestic Spcctic Areas, Weiss Associties,Novonbcr 1997D ~ DupliaJe Simple




Paramele-

Unili

PROBackground (2)

Sumpling Event Loolion Simple Depth (1) Type QA1995 Wiste Burial Hole! Soil Sampling

1996 W»slc Buriil Hold Soil Sampling

SBL0032

SSWBOOI SSSWBOOI9TRL0049

TRL0050

TRL005I

TRL0052

TRL005J

TRL0054

SSUT002ISSUT003JSSUT0024SSUT0027SSUT003ISSUT0034SSWBOOI 8SSWBOOI9SSWD0001

SSWB0002SSWB0003SSWB0004SSWB0005SSWB0006SSWB0007SSWB0008SSWB0009SSWBOOIOSSWBOOI 1SSWBOOI2SSWBOOI3SSWBOOI 4SSWBMI5SSWB0016SSWBOOI?

06.5015.0035.000900020002.0007.00

05.0003.5005.2507.0007.0010.00100009.00100012.0009.0011.00070012.0012.0007.00

W

w

WASTE

WASTE

WASTE

WASTEWASTE

WASTEWASTE

WASTE

WASTE

WASTE

0

Tritium

<pCi/L)14706

105

22000il600

1624001:95004090000004:1

263 00000*93

9«!000±3500

39400000±I4lOJOtJJO

340tlSO321)1140

U3Dx3IO

<-30il20

<0±I20

3UOOOOOi 1900000 B|)l

196000140000

J3600000tnCK)OflO B|ll

<51000±23000

233000*12000 B|ll

47000*1700 B|li31000*2000 B|ll

2600000tl3MHM) B|JI

1011000*54000 . |JI

1!100*I200J10±2IO

710*110

3030*310

(I) - Wet Anilyiii in unili (mj/L. ug/L. pCi/L)(1) - Dittl EE/CA for Southwnl Trenches Ri/Sr TlHlmentSyilcmi uid Domcllic Specric Aleu. Wcin Aliociitei,November 1997D » Duplicate Sample.

TABLE C-3SOIL TRITIUM LSC LOG

IRA WORK PLAN - WASTE BURIAL HOLESLEHR/SCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA

Item IDTRL49. 50 BkgTRJL49-1TRL49-ZTRL50-1TRL5 1 BkgTRL5 1 BkgTRL51-1TRL51-2TRL51-3TRJL51-4TRL50.52.53.54 BkgTRL50-2TFLL52-ITRL52-2TRL53-1TRL53-2TRL54-1TRL54-2 '

Item DescriptionBackground vialTrench sampleTrench sampleTrench sample

Background vialBackground vial'Trench sampleTrench sampleTrench sampleTrench sample

Background vialTrench sampleTrench sampleTrench sampleTrench sampleTrench sampleTrench sampleTrench sample

cpm3.502.923.473.422.432.48

5,50334.252

30941.63.7514.286.5316.5

257.67210.439.08

16

dpm9.6111.4312.3112.04

. 3.154.54 ''

29,893187,110

1,450216.511.7971.5728.4277.66

1,517.11,292.91214.9590.02

CorrectedpCi/L

n/a***

n/an/a

3.6x 107

1.71 x 108

1.55 x 106

202.602n/a

139.60243,473141,360

2.6 x 106

1.9 x 106

173.59064.655

CorrectedpCi/g

n/a***

n/an/a

4,42632.819

18327n/a

18.513.6615.15354292

24.187.34

R:\sac\Iehr\9903 I0.doc

TADLE C-4WASTE BURIAL HOLESANALYTICAL RESULTS

METALSSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA

SAMPLELOCATIONDATEDEPTHTYPE

AHALYTE

ANTIMONYARSENICBARIUMBERYLLIUMCADMIUMCHROMIUMCHROMIUM, HEXAVALEHT (+6)COBALTCOPPERLEADMERCURYMOLYBDENUMNICKELSELENIUMSILVERTHALLIUMVANADIUM2IHC

SSWB0001TRL004908/27/967.00WASTE

< 0.760 H|UJm4.400

UQ.OOO< 0.250< 0.76085.500 N*|Jd

< 0.200< 12.670 B|54.90013.4000.380

< 2.500149.0001.500

< 1.500< 1.50037.00066.900

SSHB0002TRL004908/27/965.00

< 0.690 H|UJm9.300

254.000< 1.150 B|< 0.690120.000 ll*|Jd

< 0.03027.00050.9008.800

< 0.120< 2.300251.000< 1.150 B|< 1.400< 1.40076.200aa.100

SSWB0003TRL005008/27/963.50WASTE

< 0.670 H|UJm9.100

226.000< 1.110 B|< 1.110 B|127.000 H*|Jd< 0.03023.000116.00064.4001.300

< 2.200238.000< 0.890< 1.300< 1.30059.800251.000

SSWB0004TRL005008/27/965.25

< 13.390 BH|UJm12.900182.000< 1.120 B|< 0.670174.000 H*|Jd

< 0.03024.900

' 36.7007.3000.410

< 2.200299.000< 1.120 B|< 1.300< 1.30065.40074.800

SSWB0005TRL005108/29/967.00WASTE

< 0.680 H|UJraU.900

200.000< 1.140 B|< 0.680114.000 N'jJd

< 0.03423.10045.3009.3000.210

< 2.300234.000< 1.140 B|< 1.400< 1.40066.700108.000

SSWB0007TRL005108/29/9610.00

< 0.600 HjUJm10. /.OO183.000

< 1.130 B|< 0.6801U3.000 H*jJd'

< 0.230 B|21.30041.5007.4000.130

< 2.300221.0001.400

< 1.400< 1.40065.00078.800

All units reported as mg/Kg

< = Constituent below detection limit. Detection limits may vary depending on Interference by other sample constituents.

TABLE C-4 (CONTINUED)WASTE BURIAL HOLESANALYTICAL RESULTS

METALSSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA


AHALYTE

ANTIMONYARSENICBARIUMBERYLLIUMCADMIUMCHROMIUMCHROMIUM, HEXAVALEHT (+6)COBALTCOPPERLEADMERCURYMOLYBDENUMNICKELSELENIUMSILVERTHALLIUMVANADIUMZIHC

SSWB0015TRL005409/03/9612.00

< 0.670 H|UJl8.800

253.000< 1.120 B|< 1.120B|126.000 HJJm

< 0.03528.50058.7008.600

< 0.120 lljUJm< 2.200269.000 H|Jm2.800

< 1.300< 1.30075.500101.000

SSUB0016TRL005409/03/9612.00DUPLICATE

< 0.840 H|UJI10.200273.000

.< 1.410 B|< 0.810144.000 N|Jm

< 0.04234.40068.10010.3000.190 HJJm

< 2.800318.000 ll|Jm3.400

< 1.700< 1.70082.700118.000

SSWB0018SSWB001B09/03/962.00

< 0.610 H|UJt7.300

182.000< 1.020 B|< 1.020 BJ157.000 H|Jm

< 0.03223.60037.1008.5000.580 N|Jm

< 2.000276.000 N|Jm1.900

< 1.200< 1.20061.90075.100

SSWB0019SSWB001909/03/962.00

< 0.680 H|UJl7.900

173.000< 1.130B)< 0.680160.000 N|Jm

< 0.03325.00036.4009.2000.590 N|Jm

< 2.300293.000 H|Jm2.200

< 1.400< 1.40060.70074.900

All units reported as mg/Kg

< = Constituent below detection limit. Detection limits may vary depending on interference by other sample constituents.

TABLE C-6WASTE BURIAL HOLESANALYTICAL RESULTS

SEMI-VOLATILE ORGANIC COMPOUNDSSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA


AHALYTE

1,2,4-TRlCHLOROBENZEHE1,2-DICHLOROBEHZEHE1,3-D1CHLOROBENZEHE1,4-DlCHLOROBENZENE2,2'-OXYBIS(1-CHLOROPROPAHE)2,4,5-TRlCHLOROPHEHOL2,4,6-TRICHLOROPHEHOL2,4-DICHLOROPHEHOL2,4-DlHETHYLPHEHOL2,4-DIHITROPHEHOL2,4-DIHITROTOLUEHE2,6-DlHlTROTOLUEHE2-CHLOROHAPHTHALEIIE2-CHLOROPHEHOL2-HETHYL-4,6-DIHlTROpHEHOL2-HETHYLNAPHTHALEME2-HETHYLPHEHOL2-H1TROAHILIHE2-HUROPHEHOL

' S^'-DICHLOROBEHZIDIHE3-rilTROANiLiNE4-BROMOPHEHYL PHEHYL ETHER4-CHLORO-3-HETHYLPHEHOL4-CHLOROAHILIHE4-CHLOROPHEHYL PHENYL ETHER4-METHYLPHEHOL4-H1TROAHIL1HE

SSWB0001TRL004908/27/967.00WASTE

< 440 |UJl< 440< 440< 440< 440< 1100< 440< 440< 440< 1100< 440< 440< 440< 440< 1100< 440< 440< 1100< 440< 440< 1100< 440< 440< 440< 440< 440< 1100

SSWB0002TRL0049OB/27/965.00

< 380 |UJl< 380< 380< 380< 380< 920< 380< 380< 380< 920< 380< 380< 380< 380< 920< 380< 380< 920< 380< 380< 920< 380< 380< 380 '< 380< 380< 920

SSWB0003TRL005008/27/963.50WASTE

< 370 |UJl< 370< 370< 370 .< 370< 910< 370< 370< 370< 910< 370< 370< 370< 370< 910< 370 .< 370< 910< 370< 370< 910< 370< 370< 370< 370< 370< 910

SSWB0004TRL005008/27/965.25

< 380 |UJl< 380< 380< 380< 380'< 910< 380< 380< 380< 910< 380< 380< 380< 380< 910< 380< 380< 910.< 380< 380< 910< 380< 380< 380< 380< 380< 910

SSWB0005TRL005108/29/967.00WASTE

< 380 ,< 380< 380< 380< 380< 920< 380< 380< 380< 920< 380< 380< 3BO< 380< 920< 380< 380< 920< 380< 380< 920< 380< 380< 380< 380< 380< 920

SSWB0007TRL005108/29/9610.00

<<<<<<<<<<<<<<<<<<<<<<<<<<<

380380380380380930380380380930380380380380930380380930380380930380380380380380930

All units reported as ug/Kg




DAVIS, CALIFORNIA


AHALYTE

IHDEHO(1,2,3-CD)PYREHEISOPHOROHEH-H1TROSOOI-H-PROPYLAM1NEH-HITROS001PHEHYLAHIHEHAPHTHALEMEIIITR08EH2EIIEPEHTACHLOROPHEHOLPHEHANTHREHEPHEHOLPYREHE

i

SSWB0001TRL004908/27/967.00WASTE

< 440< 440< 440 |UJl< 440< 440< 440< 1100< 440< 440< 440

SSUB0002TRL004908/27/965.00

< 380< 380< 380 |UJl< 380< 380< 380< 920< 380< 380

' < 380

SSHB0003TRL005008/27/963.50WASTE

< 370< 370< 370 |UJl< 370< 370< 370< 910< 370< 370< 370

SSWB0004TRL005008/27/965.25

< 380< 380< 380 |UJl< 380< 380< 380< 910< 380< 380< 380

SSWB0005TRL005108/29/967.00WASTE

< 380< 380< 380< 3801700 |jl

< 380< 920< 380< 380< 380

SSWB0007TRL005108/29/9610

<<<<<<<<<<

.00

380380380380380380930380380380


< * Constituent below detection limit. Detection limits may vary depending on interference by other sample constituents.



DAVIS, CALIFORNIA


ANALYTE

4-HITROPHENOLACEHAPHTHEHEACEHAPHTHYLEHEANTHRACENEBEHZO(A)AHTHRACEHEBENZO(A)PYRENEBEHZO(B)FLUORANTHEHEBENZO(G,H,1)PERYLEHEBEHZO(K)FLUORAHTHEHEBENZYL BUTYL PHTHALATEBIS(2-CHLOROETHOXY)METHANEBIS(2-CHLOROETHYL)ETHER81S(2-ETHYLHEXYL)PHTHALATECARBAZOLECHRYSEHEDl-H-BUTYLPIITHALATEDl-H-OCTYLPHTHALATED1BENZO(A,H)ANTHRACEHE01BEHZOFURAMD1ETHYL PHTHALATEDIMETHYL PHTHALATEFLUORANTHEHEFLUOREHEHEXACIILOROBEHZEHEHEXACHLOROBUTAD1EHEHEXACHLOROCYCLOPENT AD I EHEHEXACHLOROETHAHE

SSWB0009TRL005108/29/969.00WASTE

< 970< 400< 400< 400< 4UO '< 400< 400< 400< 400< 400< 400< 400< 400 J |< 400< 400< 400< 400< 400< 400< 400< 400< 400< 400< 400< 400< 400< 400

SSWB0010TRL005208/30/9610.00WASTE

: 910< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370 J |< 370< 370< 370< 370 |UJc< 370< 370< 370< 370-< 370< 370< 370< 370< 370< 370

SSWB0011TRL005208/30/9612.00

< 890< 370< 370< 371< 37C< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370 |UJc< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370

SSUB0012TRL005308/30/969.00WASTE

< 930< 380< 380< 380< 380< 380< 380< 380 .< 380< 380< 380< 380< 380 J|< 380< 380< 380< 380 |UJc< 380< 380< 380< 380< 360< 380< 380< 380< 380< 380

SSWBOQ13TRL005308/30/9611.00

< 910< 380< 380< 380< 380< 380< 380< 380< 380< 380< 380< 380< 380< 380< 380< 380< 380 |UJc< 380<. 380< 380< 380< 380< 380< 380< 380< 380< 380

SSWBOOKTRL005409/03/967.00WASTE

< 890< 370< 370< 370< 370< 370< 370< 370< 370 '< 370< 370< 370< 370 J|< 370< 370< 370 J|< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370< 370


< = Constituent below detection limit. Detection limits (nay vary depending on Interference by other sample constituents.



DAVIS, CALIFORNIA


AHALYTE

1,2,4-TRlCHLOROBENZEHE1,2-DlCHLOROBEHZEHE1,3-DICHLOROBEHZEHE1,4-DICHLOROB£NZEN£2,2'-OXYB!S(1-CHLOROPROPAHE)2,4,5-TRlCHLOROPHEHOL2,4,6-TRiCHLOROPHEHOL2,4-DlCHLOROPHEIIOL2,4-DIHETHYLPHEHOL2,4-DIHITROPHEHOL2,4-DIHITROTOLUEHE2,6-DlHlTROTOLUEHE2-CHLOROHAPHTHALEHE2-CHLOROPHEHOL2-HETHYL-4,6-DIHITROPH£HOL2-HETHYLHAPHTHALEHE2-HETHYLPHEHOL2-HITROAHILIHE2-HITROPHEHOL3,3'-DICHLOROBEHZIDlHE3-HITROANILIHE4-BROMOPHEHYL PHEHYL ETHER4-CHLORO-3-HETHYLPHEHOL4-CHLOROAHILIHE4-CHLOROPHEHYL PHEHYL ETHER4-HETHYLPHEHOL4-H1TROAHIL1HE

SSWB0015TRL005409/03/9612.00

< 380 |UJl< 380< 380< 380< 380< 930< 380< 380< 380< 930< 380< 380< 380< 380< 930< 380< 380< 930< 380< 380< 930< 380< 380< 380< 380< 380< 930

SSWB0016TRL005409/03/9612.00DUPLICATE

< 460 |UJl< 460< 460< 460< 460< 1100< 460< 460< 460< 1100< 460< 460< 460< 460< 1100< 460< 460< 1100< 460< 460< 1100< 460< 460< 460< 460< 460< 1100

SSUB0018SSWB001809/03/962.00

< 350 |UJl< 350< 350< 350< 350< 840< 350< 350< 350< 840< 350< 350< 350< 350< 840< 350< 350< 840< 350< 350< 840< 350< 350< 350< 350< 350< 840

SSWB0019SSUB001909/03/962.00

< 370 |UJl< 370< 370< 370< 370< 890< 370< 370< 370< 890< 370< 370< 370< 370< 890 '< 370< 370< 890< 370

- < 370< 890< 370< 370< 370 -< 370< 370< 890





DAVIS, CALIFORNIA


ANALYTE

INDENOO.Z.S-CDJPYREHE1SOPHOROHEN-NITROSC01-H-PROPYLAMIHEH-HITROSCOIPHENYLAHINENAPHTHALENENITROBENZENEPEHTACHLOROPHENOLPHEHANTHREHEPHENOLPYREHE

SSUB0015TRL005409/03/9612.00

< 380< 380< 380< 380< 380< 380< 930< 380< 380< 380


< 460< 460< 460< 460< 460< 460< 1100< 460< 460< 460

SSUB0018SSUB001809/03/962.00

< 350< 350< 350< 350< 350< 350< 840< 350< 350< 350

SSWB0019SSWB001909/03/962.00

< 370< 370< 370< 370< 370< 370< 890< 370< 370< 370




ORGANOCHLORIN'E PESTICIDESSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA


AHALYTE

TOXAPHEHE

SSUB0001TRL004908/27/9.67.00HASTE

<220.0

SSWB0002TRL004908/27/965.00

•090.0

SSWBOOQ3TRL005008/27/963.50WASTE

<190.0

SSUB0004TRL005008/27/965.25

<190.0

SSWB0005TRL005108/29/967.00WASTE

<190.0

SSWB0007TRL005108/29/9610.00

<190.0


< - Constituent below detection limit. Detection limits may vary depending on Interference by other sample constituents.


ORGANOCHLORINE PESTICIDESSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA

SAMPLE SSWB0009 SSWB0010 SSWB0011 SSWB0012 SSWB0013LOCATIOH TRL0051 TRL0052 TRL0052 TRL0053 TRL0053DATE 08/29/96 08/30/96 08/30/96 08/30/96 08/30/96DEPTH 9.00 10.00 12.00 9.00 11.00TYPE WASTE WASTE WASTE

AHALYTE

TOXAPHEHE <200.0 <190.0 <190.0 <200.0 <190.0

*'

SSWBOOKTRL005409/03/967.00WASTE

<190.0




ORGANOCIILOR1NE PESTICIDESSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA

AHALYTE

TOXAPHEHE


SSUB0015TRL005409/03/9612.00

<190.0


<230.0

SSUB001BSSWBOOia09/03/962.00

<1BO.O

SSWB0019SSWB001909/03/962.00

<180.0




VOLATILE ORGANIC COMPOUNDSSCDS ENVIRONMENTAL RESTORATION

DA VIS, CALIFORNIA


AHALYTE

TETRACHLOROETHEIIETOLUEHETRANS-1,3-D!CHLOROPROP£HETR1CHLOROETHEHEVIHYL CHLORIDEXYLEHES (TOTAL)

SSWQ0001TRL001908/27/967.00WASTE

< 13< 13< 13< 13< 13< 13

SSWB0002TRL004908/27/965.00

< 11< 11< 11< 11< 11< 11

SSWB0003TRLOQ5008/27/963.50WASTE

< 11< 11< 11< 11< 11< 11

SSUBOOCKTRL005008/27/965.25

< 11< 11< 11< 11< 11< 11

SSWB0005TRL005108/29/967.00WASTE

< 11< 11< 11<'11< 11< 11

SSWB0007TRL005108/29/9610.00

< 12< 12< 12< 12< 12< 12


< = Constituent below detection limit. Detection limits may vary depending on interfer nee by other sample constituents.

TABLE C-13 (CONTINUED)WASTE BURIAL-HOLES

ANALYTICAL RESULTS FOR WET ANALYSISORGANOCHLOIUNE PESTICIDES



AHALYTE

SSWB0006TRL005108/29/967.00WASTE

SSWBOOOB. TRL005108/29/9610.00

TOXAPHEHE <6.400 <6.000

All units reported as ug/L


TABLE C-12 (CONTINUED)WASTE BURIAL HOLES

ANALYTICAL RESULTS FOR WET ANALYSISSEMI-VOLATILE ORGANIC COMPOUNDSSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA


AHALYTE

IHOEHO(1,2,3-CD)PYREIIEISOPHOROHEH-HITROSOOI-H-PROPYLAMIIIEH-HITROSODIPHENYLAMIHEHAPHIHALEHEH1TROBEHZEHEPEHTACHLOROPHENOLPHEHAHTHREHEPHEHOLPYREHE

SSU80006TRL005108/29/967.00WASTE

<13 |UJs<13 |UJs<13 JUJI<13 |UJs<13 |UJs<13 |UJs<31 |UJs<13 JUJS<13 |UJs<13 |UJs

SSW80008TRL005108/29/9610.00

<11 |UJs<11 |UJs<11 JUJI<11 jlJJs"<11 |UJs<11 JUJS

<26 JLUs<11 |UJs<11 |UJs<11 [UJs


< * Constituent below detection limit. Detection limits may vary depending on interference by other sample constituents.

TABLE C-12WASTE BURIAL HOLES

ANALYTICAL RESULTS FOR WET ANALYSISSEMI-VOLATILE ORGANIC COMPOUNDSSCDS ENVIRONMENTAL RESTORATION

. DAVIS, CALIFORNIA

SAMPLELOCAI10IIDATEDEPTHTTPE

AHALYTE

1,2,4-TRICHLOROBEHZEHE1(2-D1CHLOROBEH2EHE1,3-DICHLOROBENZEHE1,4-DICHLOROBENZEME212'-OXYBIS(1-CHLOROPROPAME)2,4,5-TRICHLOROPHENOL2,4,6-TRICHLOROPHEHOL2/-D1CHLOROPHEHOL2,4-DlMETHYLPHEHOL2,4-DlNtTROPHEHOL2,4-DlHITROTOLUEHE2,6-01HITROTOLUEHE2-CHLOROHAPHTHALEHE2-CHLOROPHEHOL2-HETHYL-A,6-DIHITROPHEHOL2-METHYLNAPHTHALENE2-HETHYLPHEHOL2-HITROAHILIHE2-HITROPHENOL3,3'-DICHLOROBEHZIDlHE3-HITROANILIHE4-BROMOPHEHYL PHEHYL ETHER4-CHLORO-3-METHYLPHEHOL4-CHLOROAHILIHE4-CHLOROPHENYL PHEIIYL ETHER4-HETHYLPHEHOL4-NITROAH1L1HE

SSUB0006TRL005108/29/967.00WASTE

<13 |Rl<13 |UJs<13 JUJS<13 JRl<13 JUJS<31 |UJs<13 JUJS<13 |UJs<13 |UJs<31 |UJs<13 |UJs<13 |UJs<13 |UJs<13 |UJs<31 |UJs<13 |UJs<13 JUJS<31 |UJs<13 |UJs<13 JUJS<31 |UJs<13 |UJs<13 JUJS<13 |UJs<13 |UJs<13 |UJs •<31 |UJs

SSWBOOOBTRL005108/29/9610.00

<11 |Rl<11 |UJs<11 |UJs<11 |Rl<11 |UJs<26 |UJs<11 |UJs<11 |UJs<11 |UJs<26 |UJs<11 |UJs<11 |UJs<11 |UJs<11 JUJS<26 |UJs<11 |UJs<11 JUJS<26 |UJs<11 |UJs<11 |UJs<26 jUJs,<11 |UJs<11 JUJs<11 JUJs<11 JUJs<11 '|UJs<26 JUJs



TABLE C-10WASTE BURIAL HOLES

ANALYTICAL RESULTS FOR WET ANALYSISMETALS



AHALYTE

ANTIMONYARSENICBARIUMBERYLLIUMCADMIUMCHROMIUMCHROMIUM, HEXAVALEIIT (+6)COBALTCOPPERLEADMERCURYMOLYBDENUMIMCKELSELENIUMSILVERTHALLIUMVANADIUMZ1HC

SSWB0006TRL005108/29/967.00WASTE

<0.0030<0.0030<0.2000 B|<0.0010<0.0030<0.0060<0.0030 H|UJh<0.0040<0.0060<0.0020<0.0002<0.0100<0.0120<0.00«0<0.0060<0.0060<0.0060<0.0200 B|

sswaoooaTRL0051OB/29/9610.00

<0.0030<0.0100 B|<0.2000 B|<0.0010<0.0030<0.0060<0.0030 H|UJh<0.0010<0.0060<0.0020<0.0002<0.0100<0.0120<o.ooso a |<0.0060<0.0060<0.0500 B|0.0212

All units reported as mg/L



RADIONUCLIDESSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA

AHALYTEACTIHIUM-228BISHUIH-212BISMUTH-211CARBON- 11 •CESIUM- 137COBALT-60GROSS ALPHAGROSS BETALEAD -210LEAD-212LEAD-211POTASS 1UH-AORADIUM -223RADIUM-226SR-89,90THALLIUM-208THORIUM-231TRITIUMURANIUM- 235

SSWB0015TRL0051

09/03/96

12.00HDA

0.590t0.10 0.110.39*0.18 0.20

0.517*0.078 0.059

SSWB0016TRL0054

„ 09/03/96

'12.00MDA

0.6UO.H 0.160.2910.23 0.30

0.452*0.095 0.093

SSWB0018SSUB001809/03/96

D2.00

MDA0.36*0.12 0.180.33*0.21 0.23

0.391*0.086 0.0791.1*6.1 11. |Jd 1.1*6.2 11. |Jd -2.2*5.8 11.

0.001*0.021 0.030-0.0006tO.0098 0.021

-0.006±0.021 0.01,7-0. 022*0.018 B.056

10.3±5.5 6.6 C| 6.2*1.7 6.7 C16.6*1.1 5.8 ' 17.0*A.5 6.0

0.019*0.028 0.036-0.003*0.017 0.050

| 5.6*1.9 7.518.0*1.5 5.8

0.7*2.3 3.3 B|UJz,f -0.6*3.1 5.0 B|UJz,f 0.12*0.59 0.870.591*0.080 0.0530.613*0.073 0.056

10.6i1.3 0.3A-0.03iO.16 0.520.59*0.21 0.1925.5t1.6 0.15

0.2H±0.039 0.0280.28±0.36 1.2810±210 210

0.07t0.11 0.17

0.6AU0.099 0.0680.608*0.090 0.081

11.3*1.5 0.53-0.20*0.21 0.68

Uz 0.60*0.21 0.19Jd 0.22*0.27 0.16

0.166*0.016 0.0170.31*0.50 1.8

780*210 2100.06*0.15 0.21

0.537*0.088 0.0680,153*0.078 0.072

10.6*1.1 0.100.03*0.25 0.72

Uz 0.71*0.21 0.20Jd 0.53*0.31 0.19

0.181*0.012 0.0320.52*0.32 0.891030*220 200

-0.058*0. 10 0.18

IJd

c|

B|Uz

|UZ

(Jd

All units report as pCi/g

TABLE v. . (CONTINUED)WASTE BURIAL HOLESANALYTICAL RESULTS

RADIONUCLIDESSCDS ENVIRONMENTAL RESTOIUTION

DAVIS, CALIFORNIA

AHALYTEACTIHIUM-228BISMUTH-212BISMUTH-214CARBON- 14CESIUM-137COBALT-60GROSS ALPHAGROSS BETALEAD -210LEAD-212LEAD-214POTASSIUM-40RADIUM-223RADIUM- 226SR-89,90THALLIUM-208THORIUM-234TRITIUMURAH1UM-235

SSWB0009TRL005108/29/96

9.00MDA

0.51*0.110.25*0.180.469*0.078230. *21.

-0.009*0.0120.006*0.0146.9*4.654.7*6.73.2*2.5

0.498*0.0740.511*0.0699.7*1.2

-0.08*0.120.43*0.200.33*0.310.153*0.0350.37*0.38

233000*120000.007*0.099

0.120.220.06711.0.0310.0255.9 C|6.13.2 B|Uz0.0570.0620.380.530.210.50 |Jd0.0331.3230 B|Jl0.17

SSWB001QTRL005208/30/96

10.00MDA

0.52*0.140.28*0.260.433*0.09723.6*7.9

-0.022*0.020-0.016*0.0183.0*3.833.9*5.20.64*0.690.600*0.0980.556*0.09210.4*1.5-0.09*0.200.84*0.250.07*0.300.176*0.0480.22*0.3647000*2700-0.03*0.12

0.190.320.09211. |Jd0.0500.0436.2 C|5.61.0 B|Uz0.0740.0910.560.730.20 |Uz0.51 |Jd0.0450.99230 B|Jl0.21

SSWB0011TRL005208/30/96

12.00MDA

0.55*0.160.33*0.300.483*0.1015.7*7.3

0.021*0.0280.005*0.0214.6*4.218.9*4.21.45*0.830.640*0.0990.653*0.09712.1*1.70.01*0.320.77*0.250.24*0.300.193*0.0511.04*0.4032000*20000.1*0.14

0.210.400.09311. |Jd0.0430.0476.2 C|5.31.2 B|Ui0.0750.0950.500.860.210.510.0461.2

OlJd

220 B|Jl0.21

All units report as pci/g

TABLE C-9WASTE BURIAL HOLESANALYTICAL RESULTS

RADIONUCLIDESSCDS ENVIRONMENTAL RESTORATION

DAVIS, CALIFORNIA

AHALYTEACTIH1UM-228BISMUTH-212BISMUTH-214CARBOII-14CESIUM-137COBALT -60GROSS ALPHACROSS BETALEAD-210LEAD-212LEAD-214POTASSIUM-40RADIUM -223RADIUM- 226SR-89,90THALLIUM-208THORIUM-234TRITIUMURAHIUM-235

SAMPLELOCATIOH

DATEQA

DEPTHUHITSpci/gpCi/gpci/g

• pCi/gpCi/gpci/gpCi/gpCi/gpci/gpci/gpci/gpci/gpci/gpci/gpci/gpci/gpci/gpCl/Lpci/g

SSWB0001TRL004908/27/96

7.00MDA

0.40i0.110.0410.200.268i0.072-0.2i5.9

0,020i0.0270.010i0.0171.03iO.B21.56i0.622.3i2.9

0.37110.0680.39810.0678.211.1

-0.23iO.120.5Bi0.260.69i0.390.107i0.0360. 32i0.44320i1600.09i0.13

0.140.260.07811.0.0350.0281.2 |Jl0.923.70.0610.0660.420.620.280.61 B|Uz0.0381.32200.18

SSUB0002TRL004908/27/96

5.00MDA

0.56i0.170.43i0.320.4910.11-3.715.0

-0.031tO.0220.003i0.02B

1.8i1.11.7910.651.04i0.7fl0.7610.120.73t0.1113.5i1.90.04t0.340.63i0.240.9U0.470.262i0.0610.4610.411B30t310O.OSiO.16

0.250.390.119.80.0580.0541.5 |Jl0.941.10.0860.0960.590.910.160.73 B|Uz0.0491.12300.25

SSUB0003TRL005008/27/96

3.50MOA

0.48i0.150.27t0.280.56*0.11-5.3i5.4

-0.006iO.030-0.005iO.023

2.8i1.41.21i0.900.76*0.780.503i0.0890.614i0.09810.4*1.5-0.25iO.200.56t0.230.59i0.350.190i0.0530.88t0.42-30i1200.06*0.14

0.200.360.099H.0.0520.0541.5 |Jl1.41.20.0740.0930.470.940.220.55 B|Uz0.0511.22300.22

All units report as pCi/g

TABLE C-s (CONTINUED)WASTE BURIAL HOLESANALYTICAL RESULTS


DAVIS, CALIFORNIA

SAMPLELOCATIOHDATEDEPTHTYPE

AHALYTE

,1,1-TRlCHLOROETHAHE,1,2,2-TETRACHLOROETHAHE,1,2-TRICHLOROETHAHE,1-DICHLOROETHAHE,1-OlCHLOROETHEME,2-DICHLOROETHAHE

1,2-DICHLOROETHEHE (TOTAL)1,2-DlCHLOROPROPAHE2-BUTAHONE2-HEXAHOHE4-HETHYL-2-PEHTAHOIIEACETOHEBEHZEHEBROHOOICHLOROMETHAMEBROMOFORHBROHOHETHAHECARBOH OISULFIDECARBOH TETRACHLORIDECHLOROBEHZENECHLOROETHAHECHLOROFORMCHLOROHETHAHECIS-1, 3-D1CHLOROPROPEIIEDI8RQMOCHLOROMETHAHEETHYL BEHZEHEHETHYLEHE CHLORIDESTYREHE

. SSUB0015TRL005409/03/9612.00

< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12 J|UJf< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12

• < 12< 12

SSWB0016TRL005409/03/9612.00DUPLICATE

< 14< 14< H< H< 14< 14< H< 14< 14< H< K

17 |Jf< H< H< 14< 14< H< H< H< 14< 14

.. < 14< 14< 14< 14< 14'< 14

SSWB0018SSWB001B09/03/962.00

< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11 J|< 11< 11< 11< 11< 11< 11< 11< 11< 11 •< 11< 11< 11< 11< 11< 11

SSWB0019SSWB001909/03/962.00

< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11 J|< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11





DAVIS, CALIFORNIA


AHALTTE

1,1,1-TRICHLOROETHAHE1,1,2,2-TETRACHLOROETHAME1,1,2-TRlCHLOROETHAHE1,1-DICHLOROETHAHE1,1-DICHLOROETHEHE1,2-DICHLOROETHAtlE1,2-DICHLOROETHEHE (TOTAL)1,2-DICHLOROPROPAHE2-BUTAMOHE2-HEXAHOME4-METHYL-2-PEHTAHOHEACETONEBEHZEHEBROMOOICHLOROMETHAHEBROHOFORH8ROHPHETHAHECARBOH DISULF1DECARBOH TETRACHLORIDECHLOROBEHZEHECHLOROETHAHECHLOROFORMCHLOROMETHAIIECIS-1, 3-DICHLOROPROPEHEDIBROMOCHLOROMETIIAHEETHYL BEHZEHEHETHYLEHE CHLORIDESTTREHE

SSWB0009TRL005108/29/969.00WASTE

< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12

SSWB0010TRL005208/30/9610.00WASTE

< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11 J|< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< IV< 11

SSUBOOi!TRL005208/30/9612.00

< 11< 11< 11< .11< 11< 11< 11< 11< 11< 11< 11< 11 J|< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11

SSWB0012TRL005308/30/969.00WASTE

< 12< 12< 12< 12< 12< 12

• < 12< 12< 12< 12< 12< 12 J|< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12< 12

SSWB0013TRL005308/30/9611.00

< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11 J|< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11

SSUBOOKTRL005409/03/967.00WASTE

< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11< 11

31< 11< 11< 11< 11< 11< 11< 11< 11< 11

, < 11< 11< 11< 11< 11< 11



Table 2Summary of Post-Excavation, Sampling Analytical Results

Tritium, Carbon-14SCDS Environmental Restoration - Davis, California

• -npIelD.rnber

SSWB0060SSWB0061SSWB0062SSWB0063SSWB0064SSWB0065SSWB0066SSWB0067SSWB0068SSWB0069SSWB0070SSWB0071SSWB0072SSWB0073SSWB0074SSWB0075SSWB0076SSWB0077SSWB0078SSWB0079SSWB0080SSWB0081SSWB0082SSWB0083

^SWB0084•WB0085™ 'B0086.. VB0087SSWB0088SSWB0089SSWB0090SSWB0091SSWB0092SSWB0093SSWB0094SSWB0095SSWB0096SSWB0097SSWB0098SSWB0099SSWB0100SSWB0101SSWB0102SSWB0103SSWB0104SSWB0105SSWB0106SSWB0107

WasteBurial.Hole

WBHOOlWBH001WBH002WBH003WBH003WBH004WBH005WBH006WBH006WBH007WBH008WBH009WBH009WBH009WBH009WBH010WBH011WBH012WBH012WBH013WBH014WBH014WBH015WBH016WBH017WBH018WBH018WBH019WBH020WBH020WBH020WBH021WBH022WBH023WBH023WBH024WBH025WBH026WBH026WBH027WBH028WBH029WBH030WBH030WBH030WBH03 1WBH032WBH032

Sample DescriptionSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil-base of excavationSoil - 2 ft below baseSoil-base of excavationSoil-base of excavationSoil - 2 ft below base

QC

Dup

Dup

Dup

Dup

Sample Date10/0479910/04/9910/06/9910/06/9910/06/9910/07/9910/07/9910/08/9910/08/9910/08/9910/08/9910/09/9910/09/9910/09/9910/09/9910/18/9910/11/9910/12/9910/12/9910/14/9910/15/9910/15/9910/16/9910/18/9910/18/9910/18/9910/18/9910/19/9910/20/9910/20/9910/20/9910/20/9910/21/9910/21/99

' 10/21/9910/21/9910/25/99 '10/25/9910/25/9910/26/9910/27/9910/27/9911/04/9911/04/9911/04/991 1/04/991 1/04/9911/04/99

Sample Depth(ft hgs)

10.012.011.09.511.510.08.510.012.010.09.510.010.012.012.09.08.09.511.59.010.012.010.09.510.010.712.710.08.08.010.08.0

—9.011.011.013.011.013.011.09.09.07.07.09.08.57.09.0

Tritium Concentration(pCi/g)

-1.03±0.852 U-1.21 ±0.861 Ul.55±0.982 U0.00±0.929 U

NA-1.16±O.S28 U1.16±0.988 U

-0.758±O.S97 UNA

-1.19±0.847 U0.768±1.01 U

-0.852±0.830 U-0.448±0.904 U

4.03±l.ll J4.51+1.18 J22.5±1.28 J

0.142±0.902 U1.52±0.967 U2.45±1.01 J902±8.09

9.36±0.985 JNA

14.90±1.17 Jl.70±0.656 J43.8+1.85 J

' 1.13±0.622 J0.83+0.595 U2.11+0.676 J5.15±0.815 J6.23+0.872 J14.6+1.17 J

4.34±0.782 J0.00+0.537 U28.7+0.1.53 J

NA162±3.38 J

42.3±1.74 J1.31+0.563 J1.19±0.562 J30.9±1.55 J5.46±1.12 J0.44+1.09 U1.94+1.13 J

0.892±1.07 U2.43±1.16 -J

3.8±1.2 J0.504±1.06 U0.852+1.08 U

Carbon- 14Concentration (pCi/g)0.468+0.357 U0.307+0.283 U .

NA0.226+0.265 U0.263±0.274 U

NANA

2.17+0.341. J0.837+0.305 J

NANA

0.629±0.284 J0.866+0.292 J2.27+0.328 J6.21±0.426 J

NANA

0.342±0.264 U0.480+0.276 J

NA0.0983±0.0685 U0.0717+0.0695 U

NANANA

0.487+0.0801 J0.772±0.0906 J

NA1.57+0.112 J

NA2.06±0.141 J

NANA

0.119±0.0686 J0.751+0.0924 J

NANA

1.19+0.0686 J7.78±0.212 J

NANA

0.178±0.0707 J0.123+0.0727 J0.346+.0.0804 JO.I88±0.0839 J-0.063±0.0671 U-0.041+0.0749 U0.01t±0.0685 U

Notes:U=Nol Detected above the laboratory detection limit.J=Detected below the laboratory detection limit.

pNot Analyzedta Not Available

I nple Locations See Rgure 8

WBH WP Table 2.xls Adapted from Dames Moore, 2000

Table 3Summary Of Fill Material Tritium And Carbon-14 Analytical Results

Waste Burial Holes Interim Removal ActionSCDS Environmental Restoration - Davis, California

Sample ID ~ TritiumNumber Composite Description Sample Date Concentration Carbon- 14

(pCi/g) Concentration (pCi/g)OVERBURDEN

SSSP0001

SSSP0006

SSSP0010

SSSP0014

SSSP001, SSSP002, SSSP003, SSSP004

SSSP006, SSSP007, SSSPOOS, SSSP009

SSSP010, SSSPOI 1, SSSP012, SSSP013SSSP014, SSSP015, SSSP016

9/29/99 -9/30/99

10/19/99 - lO/_/00

10/20/99 - 10/22/9910/25/99 - 10/26/99

0.659 ±0.569 U

0.545 ±0.569 U

6.52 ±0.872 J1.91 ±0.648 J

0.205 ±0.264 U

0.344 ±0.0771 J

0.44fi ±0.0820 J0.1 77 ±0.07 19 J

2-FT OVERBURDENSSSP0005SSSP0017

N/AN/A

10/07/9910/26/99

0.299 ±1.1 U0.299 ±1.1 U

0.669 ±0.0821 J0.369 ±0.074 J

LLRWSOIL

LLRSOOOI

LLRS0002

LLRS0003

LLRS0004

LLRS0005

LLRS0006

LLRSOOOI a (5 ft bgs), LLRSOOOI b (3 ftbgs) @ STA 125

LLRS0002a (5 ft bgs), LLRS0002b (3 ftbgs), LLRS0002c (1 ft bgs) @ STA 100

LLRSOOOSa (5 ft bgs), LLRSOOOSb (3 ftbgs), LLRS0003c (I ft bgs) @ STA 85

LLRS0004a (2 ft bgs), LLRS0004b (2.5 ftbgs), LLRS0004c (3 ft bgs) @ STA E70,

S13

LLRSOOOSa (2.5 ft bgs), LLRSOOOSb (3 ftbgs), LLRSOOOSc (3.5 ft bgs) @ STA E74,

S18

LLRS0006a (2.75 ft bgs), LLRS0006b (3.35ft bgs), LLRS0006c (3.75 ft bgs) @ STA

E68, S22

12/07/1999 - 12/08/99

12/08/99 - 12/09/99

12/08/99

03/29/99

03/29/99

03/29/99

21.7 ±1.84

76.2 ±2.95

13.5 ±1.56

26.0 ±3.23

25.5 ±2.98

19.7 ±5.37

7.42 ±0.19

17.3 ±0.281

9.87 ±0.227

3.30 ±0.339

4.44 ±0.380

2.37 ±0.306POTENTIALLY MIXED WASTE SOIL

PMWS001

PMWS002

PMWSOOla (5 ft bgs), PMWSOOOlb (3 ftbgs), PMWSOOOlc (1.5 ft bgs) @ STA 245

PMWS002a (5 ft bgs), PMWS0002b (3 ftbgs), PMWS0002C (1.5 ft bgs) @ STA 255

12/06/99 - 12/08/99

12/06/99 - 12/08/99

1 1 1 ±3.55

128 ±3.73

-0.06(5 ±0.0692 U

2.85 ±0.139

WBH WP Table 3.xls Source: Dames Moore

SSWBH-wasteSSWB15-soilSSWB16-soilSSWB17-waste

SB-32SSUT21-soilSSUT33-soilSSUT24-wasteSSUT34-soilSSUT27-soilSSUT31-soi

SSWBS-wasteSSWB6-WETSSWB7-soilSSWB8-WET

SSWB9-waste

-9.5 f

SSWB3-wasteSSWB4-soil

n ^ ,, 5.25-6.25 ft.° - 3 f t - - - - S S W B 17-11 ft. 1.5-9 ft

A SSWB18-soil7-8.50-1.5 ft.

^8-10.5 ft.SSWB12-wasteSSWB13-soil

6-7 ft I2.5-3.5 ft.EXPLANATION:

- 9 ft. Approximate lateral extents of wasteirsfsss / /^ i encountered in' trenches, dashed

where inferredi i TRL 54 Data Gaps Trench Location (1996)H- — — -M7 Previous Wahler Trench (1988){g————iET-16 Previous U.C. Davis Trench (1990)® SBL-32 Soil Boring Location0 SGL-47 Soil Gas LocationA SSWB19-soil Soil Sample LocationA SSWB10-waste Waste Sample LocationA SSWB8-WET Waste Extraction Test Sample Location

Subtle Geophysics Anomaly

Distinct Geophysics Anomaly

SSWB10-wasteSSWB11-soii

20iScale in Feet



DAVIS, CAUFORNIAWASTE BURIAL HOLES

CHARACTERIZATION

PREVIOUS INVESTIGATIONSAMPLE LOCATIONS

FIGURE A-1

WEST EDGEOF EXCAVAE20

EAST EDGOF EXCAVATIONE300 . . .,

//

£20_i

Scale in Feet

EXPLANATION:

E20, S10 East and South Stationing Previous Sampling Locations

Clean Imported Soil

D D' Cross Section D-D'

NOTE:Plastic Fence was Placed Below, Above, andon the West, East and South Side of the LLRWand PMW Soil.




CHARACTERIZATION

BACKFILL SOIL LOCATION MAP

FIGURE A-2

WEST EDGEOF EXCAVATIONE20

SSWB006000') JSSWB0061 /

DOQSSWB0062

soo

SSWB0063(9.5')SSWB0064(11.51)

SSWB00650°')

SSWB0067(10')

SSWB0066 SSWB0068(12')

-07

SSWB0069 . _ . . _ . . .(10') SSWB0070 (12' - dup)

^ y. D

SSWB0071(10')SSWB0072(10' - dup)SSWB0073(12') SSWB0075SSWB0074 (9')

SSWB0076(8')

SSWB0106

sSvB0107 ff^0077

(9' SSWB0078(11.51) (?0708° gSO-05

SSWB0079 SSWB0081 (8-5)(9') (12')

SSWB0088(8')SSWB0089(8' - dup)SSWB009000')

SSWB0093(9')SSWB0094(11')

E200 SSWB0083 SSWB0084 SSVffBOOSS(9.5') ,00')

SSWB0086(12.71) SSWBOD87

EAST EDGEOF EXCAVATIONE300 / i

SSWB0099(11')

SSWB0095(11')

20iScale in Feet

EXPLANATION:

SSWB0060(10>)

WBH-15

E20, S10

dup

Soil Sample Identification Numberand Sample Depth in Feet BelowGround Surface

Waste Burial Holes Removed (1999)

East and South Stationing

Duplicate Sample

SSWB0102(7')SSWB0103(7' - dup)SSWB0104(9')

SSWB0096 SSWBOQ97(13) (ir)

SSWB0098(13')

NOTE:Radiologic Data Associated With EachSample is Found in Table 2.



DAVIS, CAUFORNIAWASTE BURIAL HOLES

CHARACTERIZATION

POST EXCAVATIONSOIL SAMPLE LOCATION MAP____________FIGURE A-3_________

Appendix B

MONTGOMERY WATSON

Appendix BBoring Logs

\\Ussacls-ifosvi\sac industriaI\Project\LEHR\WBH_Misc\WBH Report-Draft.doc

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Water Level

Sample Type

Blows / 6-inches

Inches Driven /Recovered

PID (PPM)

Samples

Lithology

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Lehr-UC DavisDavis, California

rilling Method:./rilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth :5 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallon

Hollow Stem AugerD18Gregg. DrillingCA Mod. Drive Samples0.56 in.

Log of Boring No. SBL 371B

Boring Location: University of Califronia DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/ADepth to First Water (ft. bgs): N/A s

Depth to Static Water (ft. bgs): 5

w >£ 5 a

I I B

ui

&

Q.

ra

Oc

CO

Jla a>

|S

Sa.Si-aE

Soil Description

0 I

-5 -

CA.Mod

5713

fellCL: SILTY CLAY, reddish brown (SYR 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown, (5YR 4/4), moist, very dense

EOH @ 5 ft. bgs

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL 371BPage 1 of 1J:\SAC_lndustrial\Logs\Lehr\SBL-322


rilling Method:trilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:/ ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: , Mike Fallen

Hollow Stem AugerD18Gregg DrillingCA Mod. Drive Samples0.56 in.

Log of Boring No. SBL 371C

Boring Location: University of Califronia DavisElevation (Ground Surface):Elevation (Top of Casing):Depth to First Water (ft. bgs): N/A s

Depth to Static Water (ft. bgs): z

Q.

53 ?i £ .3c >ro &

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oa.

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CO

oc

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0.

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o"o Soil Description

0 -i

-5 -

CA.Mod

71013 •

m^fr CL: SILTY CLAY, reddish brown (SYR 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown (SYR 4/4), moist, very dense, Carbonate Spots

Decrease in density to medium dense

EOH @ 7 ft

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL 371CPage 1 of 1J:\SAC_lndustrial\Logs\Lehr\SBL-322


rilling Method:-/rilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth :2.5 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallon


Log of Boring No. SBL 372A


Depth to Static Water (ft. bgs): :

3£ 5. jf i" 5

1 iJBHI

0)CL

.£Q.

raCO

uc•Tt£>

s5m

I IQ.0.,

oCL

O Soil Description

0 -i

CA.Mod

111014213040

CL: SILTY CLAY, reddish brown, (SYR 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown, (SYR 4/4), moist, very dense,

EOH @ 3.5 ft. bgs

MONTGOMERY WATSONProject No. 3850056.010102

Log of Boring: SBL 372APage 1 of 1J:\SAC_lndustrial\Logs\Lehr\SBL-322


rilling Method:trilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:5 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen





« sf £ 33 | |

t3 >

I_cu0.

(0V)

I1

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a.oôOL

O)o Soil Description

0 -i

-5 -

CA.Mod

91214

,uHI& CL: SILTY CLAY, reddish brown, (SYR 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown, (SYR 4/4), moist, very dense

EOH @ 7 ft


Log of Boring: SBL 372BPage 1 of 1J :\S AC_I ndustrial\Logs\Lehr\SBL-322

Lohr-UC DavisDavis, California

Tilling Method: Hollow Stem Auger-/rilling Equipment: D18Drilling Contractor: Gregg DrillingSampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:/ ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen

CA Mod. Drive Samples0.56 in.

Log of Boring No. SSL 372C



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ffiQ.

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raCO 1

a a>I

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Soil Description

0 -i

-5 -

CA.Mod

233044 '

/^x CL: SILTY CLAY, reddish brown (5YR 4/4), Dry to moist, very dense, angular gravel

ML: CLAY SILT, reddish brown (SYR 4/4), moist, very dense

EOH @ 7 ft


Log of Boring: SBL372CPage 1 of 1J:\SAC_lndustrial\Logs\Lehr\SBL-322


rilling Method:-trilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:3 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallon

Hollow Stem AugerD18GREGGCA Mod. Drive Samples0.56 in.


Boring Location: University of Califronia DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/ADepth to First Water (ft. bgs): N/A

Depth to Static Water (ft. bgs):sz

w SII 3DI i

ai

8._a

ina>oc

(0

1CO

a.oâa.

Soil Description

0 -i

CA.,Mod

4613

i

iH#CL: SILTY CLAY, reddish brown (SYR 4/4), dry to moist, very dense, angular gravel.


EOH @ 3.5 ft. bgs




rilling Method:trilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth :6 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallon

Hollow Stem AugerD18Gregg DrillingCA Mod. Drive Samples0.5Sin.

Log of Boring No. SBL 3738



COt03

HI

?"5.

in<asi

m

I •?ci <311£ 2

Q.O.gQ.

O)O Soil Description

0 -i

-5 — CAMod

656

g

%f$£ CL: SILTY CLAY, reddish brown, (SYR 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown, (SYR 4/4), moist, dense, fine roots, iron oxides

EOH @ 6 ft. bgs

MONTGOMERY WATSON

Project No. 3850056.010102



rilling Method:grilling Equipment:Drilling Contractor:Sampling Method:

Sample IntervalBorehole Diameter:Borehole Total Depth:? ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen





aCO

m

I

£.>,_aroW

in£o

_oca

a.a.aa.

§5o Soil Description

0 -i

-5 -

CA.Mod

102628 '

1CL: SILTY CLAY, reddish brown, (SYR 4/4), dry to moist, very dense, angular gravel.


EOH @ 7 ft

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL 373CPage 1 of 1J:\SAC_Industrial\Logs\Lehr\SBL-322


rilling Method:rilling Equipment:

Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:5.5 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallon

Hollow Stem AugerD18GREGGCA Mod. Drive Samples0.56 in.



Depth to Static Water (ft. bgs):

•£ 2§ a! *LU

ata.a

V)

ina>

m

I "a•j= £a a>I

a.a.aa.

_OO Soil Description

0 -I

-5 - CA.Mod

275253 u

mi?r



EOH @ 5.5 ft. bgs


Log of Boring: SBL374APage 1 of 1J:\SAC_lndustrial\Logs\Lehr\SBL-322


rilling Method:grilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:6 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen





§. j

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.2a.rato

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0 -i

-5 - CA.Mod

172750 1

US CL: SILTY CLAY, reddish brown, (SYR 4/4), dry to moist, very dense, angular gravel.


EOH @ 6 ft

MONTGOMERY WATSON

Project No. 3850056.010102



rilling Method:-/rilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:? ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen





£

I

Q-jCO

§ *

LU

a.ra

CO

oc

in_oOQ

a.a.aa

Soil Description

0 -i

-5 -

CA.Mod

283238 '

CL: SILTY CLAY, reddish brown, (Syr 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown, (Syr 4/4), moist, very dense, fine roots, iron oxides

EOH @ 7 ft

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL 374CPage 1 of 1J:\SAC_lndustrial\Logs\Lehr\SBL-322


rilling Method:trilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth :4.5ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen




Depth to Static Water (ft. bgs): >

V)£ S1.1

1m

0)Q.

a.aV)

in<ox:o

in_oOQ

I fC £C\ 0) Q.

QQ.

Soil Description

0 -i

-5 ~CA.Mod

71331 1I I

PSî*-'*^.



EOH @ 4.5 ft. bgs

MONTGOMERY WATSON

Project No. 3850056.010102



rilling Method:./rilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:5.5ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallon

Hollow Stem AugerD18Gregg DrillingCA Mod. Drive Samples0.5Gin.



Depth to Static Water (ft. bgs): ;

«It!it_o.ratn

in£

ICQ

•:: 2ci oI

0.0.,

aa!

_oo Soil Description

0 -i

-5 - CA.Mod

5922

1

iiisfel CL: SILTY CLAY, reddish brown, (SYR 4/4), dry to moist, very dense, angular gravel.


EOH @ 5.5 ft. bgs


Log of Boring: SBL 375BPage 1 of 1J:\SACJndustrial\Logs\Lehr\SBL-322


rilling Method:-/rilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:/ ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen




Depth to Static Water (ft. bgs): =

Q^ «C/J >f. <°.

<a-ro

LU

<0Q.

toOT

oc

_offl

0.Q.

QQ.

Soil Description

0 -i

-5 -

CA.Mod

233327 '

£f'-'l/.**'. CL: SILTY CLAY, reddish brown, (SYR 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown, (SYR 4/4), moist,

EOH @ 7 ft

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL375CPage 1 of 1J:\SAC_lndustrial\Logs\Lehr\SBL-322

Lehr-UC Davis Log of Boring No. SBL 376ADavis, California

•prilling Method: Hollow Stem Augertrilling Equipment: D18Drilling Contractor: Gregg Drilling

Boring Location: University of Califronia DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/A

Sampling Method: CA Mod. Drive Samples DePth to First Water («-. bos): N/ASample Interval 0.5 Depth to Static Water (ft. bgs): x

Borehole Diameter: 6 in.Borehole Total Depth:3 ftDateDate

Started: 3/29/01Completed: 3/29/01

Logged By: Mike Fallen

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Soil Description

CL: SILTY CLAY, reddish brown (SYR 4/4), dry to moist, very dense, angular gravel.

ML: CLAYEY SILT, reddish brown (SYR 4/4), moist, very dense, Trace white carbonate spots,iron oxide staining

EOH @ 3. ft. bgs





grilling Method: Hollow Stem Auger Borin9 Location: University of Califronia Davismilling Equipment: D18 Elevation (Ground Surface):N/A

Drilling Contractor: Gregg Drilling Elevation <T°P of Casin9>: N/A

Sampling Method: CA Mod. Drive Samples Depth to First Water (ft. bgs): N/A

Sample Interval 0.5Borehole Diameter: 6 in.Borehole Total Depth :5 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen

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Soil Description

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ML: CLAY SILT, reddish brown (5yYR 4/4), moist, very dense, Trace white carbonate spots

EOH @ 5 ft. bgs

MONTGOMERY WATSON

Project No. 3850056.010102



rilling Method:./rilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth :7 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen




Depth to Static Water (ft. bgs): =

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iSffn CL: SILTY CLAY, reddish brown, (SYR 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown (SYR 4/4), moist, very dense, white carbonate spots

EOH @ 7 ft


Log of Boring: SBL 376CPage 1 of 1J:\SAC_Industrial\Logs\LehASBL-322


rilling Method:->rilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth :3 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallon





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ML: CLAY SILT, reddish brown (SYR 4/4), moist, very dense, black oxide spots

EOH @ 3.5 ft. bgs

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL 377APage 1 of 1J :\SAC_I ndustrial\Logs\Lehr\SBL-322


rilling Method:drilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth :5 ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallon





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CL: SILTY CLAY, reddish brown (5YR 4/4), dry to moist, very dense, angular gravel.

ML: CLAY SILT, reddish brown (SYR 4/4), moist, very dense, angular gravel

EOH @ 7 ft

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL 377BPage 1 of 1J:\SAC_lndustrial\Logs\LehASBL-322


prilling Method:-rilling Equipment:Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:? ftDate Started: 3/29/01Date Completed: 3/29/01Logged By: Mike Fallen





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1I1CL: SILTY CLAY, reddish brown (SYR 4/4), dry to moist, very dense, angular gravel.


EOH @ 7 ft

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL 377CPage 1 of 1J:\SAC_lndustrial\Logs\LeriASBL-322


rilling Method: Hollow Stem Auger./rilling Equipment: B 18/ HSADrilling Contractor: GreggSampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth :40ftDate Started: 3/27/01Date Completed: 3/27/01Logged By: M. Lauenroth

CA Mod. Drive Samples5ft6 in.

Log of Boring No. SBL-391

Boring Location: University of Califronia DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/ADepth to First Water (ft. bgs): 35' s


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18/14

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18/16

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0.3

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CL: SILTY CLAY, red (10YR 4/6), dry, slightly plastic, some angular gravel.

ML: CLAYEY SILT, some sand, dark reddish brown (SYR 3/4), moist, moderatly plastic, somewhite dessicated spots, sand is very fine grained.

Orange fencing at -2.5

some iron oxide staining, trace black oxide spots

some glass debris

CL: SILTY CLAY, dark reddish brown, (2.5YR 3/4), moist dense, some white dessicated seams

some gray mottling, black oxide spots increase in fines trace fine grain sand

SM: SILTY SAND, dark brown (7.5YR 3/3), moist, fine to medium grained sand, some rounded


Log of Boring: SBL-391Page 1 of 2J:\SAC_lndustrial\Logs\Lehr\SBL-391

Lehr-UC Davis . * ,-, • „, OEM -*n«Log of Boring No. SBL-391Davis, California

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Construction

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CAMOD.

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18/12

18/14

.graved up to 1 inch, well sorted.trace mica.

SW: SAND, some gravel dark brown (7.5YR 3/4), moist, fine to coarse grained sand,predominately medium grained, moderately sorted sub rounded to rounded gravelapproximately.1/8 to 1/2 inch

SW: GRAVELY SAND, brown (7.5YR 4/3), moist dense rounded to sub rounded gravel mediumto coarse grained sand moderately sorted, gravel up to 1 inch

EOH @ 40 ft bgs, (Groundwater grab sample collected at 35ft bgs)

MONTGOMERY WATSON

Project No. 3850006.010101

Log of Boring: SBL-391Page 2 of 2J:\SAC_lndustrial\Logs\Lerir\SBL-391



Drilling Contractor:Sampling Method:

Sample IntervalBorehole Diameter:Borehole Total Depth:19.5 ft.Date Started: 3/28/01Date Completed: 3/28/01Logged By: M. Lauenroth

Hollow Stem Auger

D-18Gregg Drilling/ TrevorSplit Spoon5ft.6 in.


Boring Location: University of California DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/A

Depth to First Water (ft. bgs): N/A s

Depth to Static Water (ft. bgs): <

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CA.Mod.

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CL: SILTY CLAY, dark reddish brown (2.5YR 4/3), moist dense, some angular gravel, trace veryfine grained sand.

ML: CLAYEY SILT, trace sand, dark brown (7.5YR 2/3), moist, dense, white dessicated seams,some Iron oxide seams, few pieces of broken glass, sand is very fine grained

color change to very dark brown (7.5YR 2.5/3), decrease in fine grained sand, few darkerbrown seams

orange fencing encountered at 9' bgs

Increase in sand, sand is very fine grained

EOH at 19.5 ft. bgs

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL-392Page 1 of 1J:\SACJndustriar\Logs\Lehr\SBL-392


rilling Method:.rilling Equipment:

Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:43 ftDate Started: 3/26/01Date Completed: 3/26/01Logged By: M. Lauenroth

Hollow Stem AugerB18/HSAGreggCA Mod. Drive Samples5ft6 in.


Boring Location: University of California, DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/ADepth to First Water (ft. bgs): 43' bgs s

Depth to Static Water (ft. bgs): *

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0 -i

-5 -

-10 -

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CA.Mod

CA.Mod

CA.Mod

CA.Mod

CA.Mod

173850

457

47145g17101113

18/16

18/15

18/15

18/16

18/18

0.7

0.5

0.9

ML: SILTY CLAY, some gravel dusty red, (10YR 3/3), dry to moist, moderate plasticity, angulargravel, trace fine grained sand

Color change to very dusky red (2.5 YR 2.5/2)

Bottom of sorted material (orange plastic fencing material in sample)

SC: SANDY SILT, some fine grained sand, dark reddish brown (5YR 3/4), moist medium dense,slightly plastic, blocky structure, sand id very fine grained.

ML: CLAYEY SILT, some fine grained sands, red (10YR 4/3) moist, medium dense, slightlyplastic, sand is very fine grained.

SM: SILTY SAND, trace clay, red (10YR 4/3), moist medium dense, fine to medium grainedsand, well sorted

MONTGOMERY WATSON

Project No. 3850006.010102

Log of Boring: SBL-393Page 1 of 2J:\SACJndustrial\Logs\Lehr\SBL-393

Lehr-UC Davis Log of Boring No. SBL-393Davis, California

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Soil DescriptionWell

Construction

-25 -

-30 -

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CA.Mod

CA.Mod

CA.Mod

101010

61318

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1950

18/15

18/18

18/16

18/11

Grey mottling, iron oxide staining, some indurated silts

CH: CLAY, dark greenish gray (2YR 3/1), moist, dense, highly plastic, fat clay

SM: SAND, some silt, dark yelloish brown (10YR 3/4), moist, medium dense, sand is medium tofine grained predominatly medium grained oxide and mica grains visible

CH: CLAY, dark yellowish brwon (10YR 4/6), moist, very dense moderate plasticity, greymottling, trace oxide staining, blocky structure.

Increased grey mottling, white dessicated seams, some black oxide spots

Groundwater grab sample collected at 43ft bgs

EOH @ 43 ft bgs

MONTGOMERY WATSON

Project No. 3850006.010102



rilling Method: Hollow Stem AugerD-18


Boring Location: University of California, DavisElevation (Ground Surface): N/A

Drilling Contractor: Gregg Drilling/ Trevor Elevation (Top of Casing): N/ASampling Method: Split Spoon Depth to First Water (ft. bgs): N/ASample Interval 5ft Depth to Static Water (ft. bgs):Borehole Diameter: 6 in.Borehole Total Depth:19.5 ft.Date Started: 3/28/01Date Completed: 3/28/01Logged By: M. Lauenroth

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0 -i

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CA.Mod.

CA.Mod.

CA.Mod.

CA.Mod.

CA.Mod.

292929

131720

7101777116712

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18/17

18/16

18/16

18/15

1.1

1.1

1.1

CL: SILTY CLAY with gravel, dark reddish brown (2.5YR 3/3), moist, dense, angular gravel,some very fine grained sand.

ML: CLAYEY SILT, some sand, dark brown (7.5YR 3/2), moist .very dense, white dessicatedspots, trace black oxide staining, some asphalt in sample, sand is very fine to fine grained

slight gray mottling, white dessicated seams, blocky structure, decrease in fine grained sand

SM: SILTY SAND, dark reddish brown (SYR 3/2), moist, medium dense, sand is very finegrained, moderately sorted

ML: CLAYEY SILT, dark reddishgray (SYR 2/2), moist, medium dense, some oxide staining,trace very fine grained sand

Increase in fine grained sand, sand is very fine to fine grained, black oxide spots, trace mica.

EOH at 19.5'bgs

MONTGOMERY WATSON

Project No. 3850056.010102



rilling Method:.rilling Equipment:

Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:19.5 ft.Date Started: 3/26/01Date Completed: 3/26/01Logged By: M. Lauenroth

Hollow Stem AugerD-18Gregg Drilling/ TrevorSplit Spoon5ft6 in.


Boring Location: University of CaliforniaElevation (Ground Surface): N/AElevation (Top of Casing): N/ADepth to First Water (ft. bgs): 35 ftDepth to Static Water (ft. bgs):

w >£ S o>8- T .-Q ° £Iro

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CA.Mod.

CA.Mod.

CA.Mod.

224050

57g

5g135813g1216

18/16

18/15

18/16

18/15

18/15

CL: SILTY CLAY, reddish brown, dry to moist, dense, trace very fine grained sand, some angulargravel

ML: CLAYEY SILT, some gravel, dark reddish brown .very dense, moist, some very fine grainedsand, trace angular gravel, red oxide staining

decrease in desity to medium dense , some medium grained sand

approx. 5 inch sand lens, medium grained .dusky red

SM: SILTY SAND, weak red moist, medium dense, fine to medium grained sand, red oxidestaining, trace black oxide spots

ML: SILTY CLAY, brown (7.5YR 4/2), moist, dense, moderate plasticity, some gray mottlingsome black oxide staining

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL-395Page 1 of 2J:\SACJndustriar\Logs\LehASBL-395



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CA.Mod.

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2150

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Increased mottling, some black oxide staining

plastic, abundnt gray mottling, iron oxide staining, black oxide spots

Groundwater grab sample collected at 40ft bgs

EOHat41.5'bgs

MONTGOMERY WATSON

Project No. 3850056.010102



rilling Method: Hollow Stem Auger.rilling Equipment: D-18


Boring Location: University of California, DavisElevation (Ground Surface): N/A

Drilling Contractor: Gregg Drilling/ Trevor Elevation (T°P of Casin9): N/A

Sampling Method: Split Spoon DePth to First Water <«• b9s>: 39'Sample Interval 5ft Depth to Static Water (ft. bgs):

Borehole Diameter: 6 in.Borehole Total Depth :43 ft.Date Started: 3/26/01Date Completed: 3/26/01Logged By: M. Lauenroth

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Soil Description

0 -i

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CA.Mod

CA.Mod

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CA.ModCA.Mod

101931

51320

1013237163191727

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18/16

18/18

18/17

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SB CL: SILTY CLAY, reddish brown, dry to moist very dense, trace very fine grained sand, someangular gravel ,

ML: CLAYEY SILT, dusky red, moist, very dense , trace fine grained sand, sand is fine to veryfine grained, iron oxide staining

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL-396Page 1 of 2J:\SAC_lndustrial\LogsM-etir\SBL-396

Lehr-UCDavis Log of Boring No. SBL-396Davis, California

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CA.Mod

CA.Mod

1535

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163450

18/16

18/17

18/18

CLAYEY SILT reddish brown, moist, plastic, some black oxide spots

CL: SILTY CLAY some sand, dark reddish gray, moist, dense, some gray mottling, some oxidestaining

Increased grey mottling, trace Magnesium Oxide staining

ground water encountered at 39' bgs

Groundwater sampled by Hydropunch method at 43ft bgs

EOH @ 43 ft

MONTGOMERY WATSON

Project No. 3850056.010102

Log of Boring: SBL-396Page 2 of 2J:\SAC_lndustrialSLogsM-erir\SBL-396



Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:Borehole Total Depth:19.5 ft.Date Started: 3/28/01Date Completed: 3/28/01Logged By: M. Lauenroth

Hollow Stem AugerD-18Gregg Drilling/ TrevorSplit Spoon5ft6 in.


Boring Location: University of California, DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/ADepth to First Water (ft. bgs): N/A &


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Soil Description

0 -i

-5 -

-10 -

-15 -

-20 -

CA.Mod

CA.Mod

CA.ModCA.ModCA.Mod

1950

9 ,1216

61320

17195914

18/11

18/16

18/16

18/17

18/17

1.1

1.5

1.5

CL: SILTY CLAY, dusky red (2.5YR 3/3),dry to moist, slightly plastic, some angular gravel, tracevery fine grained sand

ML: CLAYEY SILT, trace sand, dark reddish brown (2.5YR 3/3), moist .very dense, iron oxidestaining .some white dessicated spots, some plastic debris, sand is very fine grained

color change to dark grayish brown (10YR 11/2) increase in fine grained sand, decrease indensity to medium density

[email protected]




rilling Method:^rilling Equipment:Drilling Contractor:Sampling Method:

Sample IntervalBorehole Diameter:Borehole Total Depth:19.5 ft.Date Started: 3/27/01Date Completed: 3/27/01Logged By: M. Lauenroth

Hollow Stem AugerB-18Gregg Drilling/ TrevorSplit Spoon5ft6 in.


Boring Location: University of California, DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/ADepth to First Water (ft. bgs): N/A s


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0 -i

-5 -

-10 -

-15 -

-20 -

CA.Mod

CA.Mod

CA.Mod

CA.Mod

CA.Mod

466

466

71214471581114

18/16

18/16

18/17

18/15

18/15

1.5

2.1

1.8

CL: SILTY CLAY, some gravel, dusky red (10YR 3/3), medium dense, moist, angular gravel,trace very fine grained sand

ML: CLAYEY SILT, some sand, very dark ducky red (25YR 2.5/2), moist .medium dense, sand isvery fine to fine grained .white dessicated spots, some red oxide spots

Slight gray mottling macropores, few white dessicated seams, increase in desity to mediumdense.

color change brown (10YR 4/3), moist, dense, some fine grained sand, blocky structure

[email protected]

MONTGOMERY WATSON

Project No. 3850056.010102




Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:

Hollow Stem AugerB18/HSAGreggCA Mod. Drive Samples (Continous Core)5ftGin.

Borehole Total Depth:50 ftDate Started: 3/27/01Date Completed: 3/27/01Logged By: M. Lauenroth

Log of Boring Mo. SBL-399

Boring Location: University of California, DavisElevation (Ground Surface): N/AElevation (Top of Casing): N/ADepth to First Water (ft. bgs): 42 ft &


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CA.Mod

CA.Mod

192432303439303545

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0.3

0.3

0.3

ML: CLAYEY SILT, with sand, dusty red, (10R 3/3), dry to moist, dense, some angular gravel,some rootlets, trace iron oxide staining, sand is fine to very fine grained

Increased iron oxide staining, some black oxide spots, gray white dissicated spots.

Trace angular gravel.

Gradational contactML: CLAYEY SILTS,, dark brown (7.5YR 3/2), moist, dense, increase in fines, root material,trace mica, sand is very fine grained, white dessicated spots, trace white dessicated seams.

ML: SANDY SILT, some clay, dark brown (7.5YR 3/4), moist very dense, trace very fine grainedsand, some white dessicated spots.

ML: CLAYEY SILTS, dark brown (7.5YR 3/2) moist, very dense, trace very fine graind sandssome white dessicated seams.

Light brown to gray mottling, black oxide spots, some white dessicated seams.



Lehr-UC Davis . .. _, . ., „_,, ,)0rtLog of Boring No. SBL-399Davis, California

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-25 -

-30 -

-35 -

-40 -

-45 -

-50 -

Color change to dark grayish brown (10yr 6/2) increased gray mottling, increased black oxidespots, blocky stucture.

SM: SANDY SILT, some clay, dark brown (7.5YR 3/2), moist, dense, sand is very fine grained,oxide staining, white dessicated spots.

SM: CLAYEY SILT, dark brown (7.5YR 3/2), moist, very dense, gray mottling black oxide spots(MnO), and iron oxide staining, blocky structure.

Abundant gray mottling, white dissicated seams, fine black oxide spots.

EOH and hydropunch sample collected at 50 ft bgs

MONTGOMERY WATSON

Project No. 3850006.010101

Log of Boring: SBL-399Page 2 of 2J :\SAC_I ndustrial\Logs\Lehr\SBL-322



Drilling Contractor:Sampling Method:Sample IntervalBorehole Diameter:

Hollow Stem AugerB18/HSAGreggCA Mod. Drive Samples (Continous Core)5ft6 in.




Borehole Total Depth:40 ftDate Started: 3/28/01Date Completed: 3/28/01Logged By: M. Lauenroth

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Soil Description

0 -i

-5 -

-10 -

-15 -

-20 -

CA.Mod.

CA.Mod.

82020234050182843

18/16

18/15

18/17

1.7

1.5

1.1

CL: SILTY CLAY, reddish brown, (2.5YR 4/4), dry to moist, dense, rootlets, some iron oxidespots

ML: CLAYEY SILT, some sand, dark reddish brown, (SYR 3/3), moist medium dense, sand isfine to very fine grained, iron oxide spots, some balck manganese oxide spots

ML: CLAYEY FINE SANDS, reddish brown (SYR 4/4) moist, medium dense, sand is very fine tofine grained, some angular rock fragments, rootlets

ML: CLAYEY SILT, trace sand, dark reddish brown (SYR 3/3), moist, dense, some iron oxidestaining, some angular rock fragments, blocky structure

decrease in fines

roots at 13 ft bgs, very blocky structure, sand is very fine grained

Increase in fine to very fine grained sand

MONTGOMERY WATSON

Project No. 3850006.010101

Log of Boring: SBL-390Page 1 of 2J:\SAC_lndustrial\Logs\Lehr\waste burial ctiaASBL-390

Lehr-UCDavis Log of Boring No. SBL-390Davis, California

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Construction

-25 -

-30 -

-35 -

-40 -

-45 J

SM: SILTY SAND, dark brown (10YR 3/3), moist, medium dense, very fine to fine grained sand,predominately very fine grained, iron oxide staining, well sorted, trace mica

Increase in sand, very flne to medium grained sandSand is fine to medium grained, decrease in fines

SP: GRAVELY SAND, brown (10YR 4/3) moist dense, sand is fine to course grained, angularrock fragments up 3/4inch in size, moderately sorted

gravels become rounded to sub rounded

GM: SANDY GRAVEL, saturated, dense rounded to subrounded gravel approx 2 cm. to 2 inchesin size, moderately sorted

Refusal at 38 ft bgs (likely due to gravel)

CL: SILTY CLAY, dark reddish brown (5YR 3/3), moist, dense, grey mottling, some whitedessicated seams, trace black oxide spots, blocky structure.

EOH @ 40 ft bgs

MONTGOMERY WATSON

Project No. 3850006.010101

Log of Boring: SBL-390Page 2 of 2J:\SAC_lndustrial\Logs\Lehr\waste burial chartSBL-390

Appendix C

MONTGOMERY WATSON

Appendix CHistoric Groundwater Monitoring Data - UCDl-13

\\Ussacts-ifosvr\SAC Industrial\Project\LEHR\WBH_Misc\WBHDrft7_9.doc 24

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aCO03

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g g oiiso2 wI H gill

o»

II

Concentration (mg/L)

» s

oy§I

COo

s!

i

2800

Carbon-14 vs. Time, UCD1-13

0Nov-SQ Nov-91 Nov-92 Nov-93 Nov-94 Nov-95 Nov-96 Nov-97 Nov-98 Nov-99

Tritium vc. Time, UCD1-13

35000

30000

3-25000

raoooo=15000

310000

5000

Nov-90 Nov-91 Nov-9a Nov-93 Nov-94 Nov-95 Nov-96 Nov-97 Nov-98 Nov-99

Montgomery WatsonUCD Graphs7/13/014:54 PM

Plots of Carbon-14 and Tritium Versus Time in UCD1-13 WellAll groundwater data (1990 to 1999)

LEHR/SCDS Davis, California

Appendix D

MONTGOMERY WATSON

Appendix DHydrologic Evaluation of Landfill Performance Model

(HELP) V.3

\\Ussacls-ifosvr\SAC Industrial\Project\LEHR\WBH_Misc\WBHDrft7_9.dcic 25

Summary of Hydrologic Model

The evaluation of the water flux in the upper 25 feet of the WBH soils is aided by the use of theHELP (Hydrologic Evaluation of Landfill Performance) model. The HELP model was developedby the U.S Army Corps of Engineers to facilitate estimation of relative amounts of runoff,evapotranspiration, and leachate drainage that may be expected for a variety of land disposaloperations. The model is capable of simulating moisture flux through as many as 12 soil and/orwaste layers, and provides calculated volumes of drainage through selected layers. For thisanalysis two different scenarios were modeled. The goal for scenario #1 is to calculate the rate ofrainfall infiltration through the native soils on the WBH site, on an annual basis from 1974 to1998. The goal for scenario #2 is to calculate the rate of infiltration through the cap andcompacted soils after waste removal in 1999. The output file from the model is provided in theappendix along with a graphic representation of the model output.

The first situation (1974-1998) modeled two layers of soil from 0 to 60 inches bgs and 60 to 300-inches bgs. The 0 to 60-inch soil layer represents the native fine sandy loam of the area with avery shallow slope. The 60 to 300-inches soil layer represents the clay loam of the native soilsbeneath the former waste burial holes. Both layers are defined as vertical percolation layers. Nobarrier layers were used in the simulation. Percolation below 300 inches is assumed to reachHSU-1 groundwater.

The second situation (1999-2001) modeled three layers of soil, from 0 to 6-inches bgs (Cap), 12to 60-inches bgs, and 60 to 300-inches bgs. The 0 to 6-inch bgs soil layer represents thecompacted imported fill soil, following the WBH removal action. The compacted surface soil isa compacted is a Sandy Clay Loam. The 12 to 60-inch soil layer represents the fine sandy loamcompacted after waste removal in 1999. The 60 to 300-inch soil layer is the clay loarn of thenative soils beneath the former waste burial holes. All three layers are defined as verticalpercolation layers.

The climatological factors used in the model are mean daily precipitation, evaporation andtemperature. The climatological data compiled by Hydrosphere on the Davis 2 WSW Exp Farm,NCDC station was used in this analysis. The daily precipitation and daily temperature wereimported in to the model to generate accurate mean precipitation and temperature. The solarradiation was synthetically generated by the model for the Sacramento area. The soil propertiesused in this evaluation are porosity, bulk density, moisture content and saturated hydraulicconductivity all of which were calculated by default in the HELP model.

To calculate rainfall infiltration velocity for scenario # 1, the infiltration rate is divided by theporosity (11.4 inches / year) / (0.46) = 24.78 inches / year. For scenario # 1 24.78 inches per yearis the annual average infiltration rate.

Th calculate rainfall infiltration velocity for scenario # 2, (2.4 inches / year) / (0.46) = 5.2 inches /year. As this calculation indicates, surface grading and compaction reduced the rainfallinfiltration rate by approximately 80 %.

Montgomery Watson

Unlined

******************************************************************************* **

**HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCE **

** HELP MODEL VERSION 3.07 (1 NOVEMBER 1997) **** DEVELOPED BY ENVIRONMENTAL LABORATORY **** USAE WATERWAYS EXPERIMENT STATION **** FOR USEPA RISK REDUCTION ENGINEERING LABORATORY **** **** _ **

PRECIPITATION DATA FILE:TEMPERATURE DATA FILE:SOLAR RADIATION DATA FILE:EVAPOTRANSPIRATION DATA:SOIL AND DESIGN DATA FILErWATER ROUTING OUTPUT FILE:OUTPUT DATA FILE:

C:\addams\helpq\DATA4.D4C:\ADDAMS\HELPQ\DATA7.D7C:\ADDAMS\HELPQ\DATA13.D13C:\ADDAMS\HELPQ\DATA11.011C:\ADDAMS\HELPQ\DATA10.D10C:\ADDAMS\HELPQ\Unlined.D14C:\ADDAMS\HELPQ\Unlined.OUT

ME: 9:45 DATE: 7/ 9/2001

***

TITLE: LEHR/SCDS WBH 1974 to 1998

***********************:

NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERECOMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM.

LAYER

TYPE 1 - VERTICAL PERCOLATION LAYERMATERIAL TEXTURE NUMBER 7

THICKNESS = 12.00 INCHESPOROSITYFIELD CAPACITYWILTING POINTINITIAL SOIL WATER CONTENT =EFFECTIVE SAT. HYD." COND.

Page 1

12.000.4730 VOL/VOL0.2220 VOL/VOL0.1040 VOL/VOL0.2426 VOL/VOL

0.520000001000E-03 CM/SEC

UnlinedNOTE: SATURATED HYDRAULIC CONDUCTIVITY IS MULTIPLIED BY 5.OO

FOR ROOT CHANNELS IN TOP HALF OF EVAPORATIVE ZONE.

LAYER 2


THICKNESSPOROSITYFIELD CAPACITYWILTING POINTINITIAL SOIL WATER CONTENTEFFECTIVE SAT. HYD. COND.

60.00 INCHES0.4730 VOL/VOL0.2220 VOL/VOL0.1040 VOL/VOL0.2684 VOL/VOL

0.520000001000E-03 CM/SEC

LAYER


THICKNESSPOROSITYFIELD CAPACITYWILTING POINTINITIAL SOIL WATER CONTENTEFFECTIVE SAT. HYD. COND.

300.00 INCHES0.4640 VOL/VOL0.3100 VOL/VOL0.1870 VOL/VOL

: 0.3250 VOL/VOL0.639999998000E-04 CM/SEC

GENERAL DESIGN AND EVAPORATIVE ZONE DATA

NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULTSOIL DATA BASE USING SOIL TEXTURE # 7 WITH ANEXCELLENT STAND OF GRASS, A SURFACE SLOPE OF 1.%AND A SLOPE LENGTH OF 30. FEET.

SCS RUNOFF CURVE NUMBERFRACTION OF AREA ALLOWING RUNOFFAREA PROJECTED ON HORIZONTAL PLANEEVAPORATIVE ZONE DEPTHINITIAL WATER IN EVAPORATIVE ZONEUPPER LIMIT OF EVAPORATIVE STORAGELOWER LIMIT OF EVAPORATIVE STORAGEINITIAL SNOW WATERINITIAL WATER IN LAYER MATERIALSTOTAL INITIAL WATERTOTAL SUBSURFACE INFLOW

67.10100.00.1856.01.2432.8380.6240.000

116.523116.523

0.00

PERCENTACRESINCHESINCHESINCHESINCHESINCHESINCHESINCHESINCHES/YEAR

Page 2

Unlined

EVAPOTRANSPIRATION AND WEATHER DATA

NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROMSACRAMENTO CALIFORNIA

STATION LATITUDEMAXIMUM LEAF .AREA INDEXSTART OF GROWING SEASON (JULIAN DATE)END OF GROWING SEASON (JULIAN DATE)EVAPORATIVE ZONE DEPTHAVERAGE ANNUAL WIND SPEEDAVERAGE 1ST QUARTER RELATIVE HUMIDITYAVERAGE 2ND QUARTER RELATIVE HUMIDITYAVERAGE 3RD QUARTER RELATIVE HUMIDITYAVERAGE 4TH QUARTER RELATIVE HUMIDITY

38.40 DEGREES5.00

733196.0 INCHES8.10 MPH77.00 %60.00 %55.00 %73.00 %

NOTE: PRECIPITATION DATA FOR Davis

WAS ENTERED FROM A EARTH INFO CLIMATEDATA.

California

NOTE: TEMPERATURE DATA FOR Davis California


NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USINGCOEFFICIENTS FOR SACRAMENTO CALIFORNIAAND STATION LATITUDE = 38.40 DEGREES

AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1974 THROUGH 1999

JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC

PRECIPITATION

TOTALS 4.080.03

3 .770.04

3.270.30

1.010.79

0.542.25

0.192.86

Page 3

STD. DEVIATIONS

RUNOFF

TOTALS

STD. DEVIATIONS

EVAPOTRANSPIRATION

Unlined3.37 3.20 2.47 1.11 " 0.77 0.350.12 0.11 0.59 0.79 2.10 2.04

0.0140 .000

0 .0420 . 0 0 0

0.0100 . 0 0 0

0.0400 . 0 0 0

0 . 0 0 00 .000

0 . 0 0 00 . 0 0 0

0 . 0 0 20 .000

0 . 0 0 90 . 0 0 0

0 .0000.001

0 . 0 0 00 .003

0 . 0 0 00.021

0 . 0 0 00.085

TOTALS

STD. DEVIATIONS

PERCOLAT I ON/ LEAKAGE

TOTALS

STD. DEVIATIONS

1.0.

0.0.

THROUGH

0.1.

0.0.

089043

301127

LAYER

52711784

22216184

10

00

01

00

.284

.036

.467

.104

3

.4519

.0720

.3797,4624

10

00

00

00

.790

.123

.744

.197

.8736

.9254

.9171

.3299

00

00

10

10

.835

.210

.617

.198

.2986

.8280

.4862

.2701

00

00

10

10

.508

.567

.571

.489

.4684

.8088

.3165

.1875

00

00

10

00

.204

.949

.326

.487

.2393

.7457

.8644

.1525

************ *******************************************

*******************************************************************************

AVERAGE ANNUAL TOTALS & (STD.. DEVIATIONS) FOR YEARS 1974 THROUGH 1999

' INCHES CU. FEET PERCENT

PRECIPITATION

RUNOFF

EVAPOTRANS PIRATION

PERCOLATION/LEAKAGE THROUGHLAYER 3

CHANGE IN WATER STORAGE

19.14 ( 7.679)

0.047 ( 0.1225)

7.638 ( 1.7990)

11.41722 ( 5.78729)

0.034 ( 3.3152)

12851.1

31.45

5129.48

7667.235

22.98

100.00

0.245

39.915

59.66189

0.179

******************************************************************************

PEAK DAILY VALUES FOR YEARS 1974 THROUGH 1999

Page 4

Unlined

(INCHES) (CU. FT.)

PRECIPITATION 3.38 2269.839

RUNOFF 0.427 286.5586

PERCOLATION/LEAKAGE THROUGH LAYER 3 0.311456 209.15816

SNOW WATER 0.99 663.7730

MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.4034

MINIMUM VEG. SOIL WATER (VOL/VOL) 0.1040

D******************************************************************************

FINAL WATER STORAGE AT END OF YEAR 1999

LAYER (INCHES) (VOL/VOL)

1 2.5251 0.2104

2 13.9799 0.2330

3 100.9081 0.3364

SNOW WATER 0.000

******************************************************************************

Page 5

UnlinedD

**********************:

*

**

**

**

**

**

**

**********************

HYDROLOGIC EVALUATION OF LANDFILL PERFORMANCEHELP MODEL VERSION 3.07 (1 NOVEMBER 1997)DEVELOPED BY ENVIRONMENTAL LABORATORYUSAE WATERWAYS EXPERIMENT STATION

FOR USEPA RISK REDUCTION ENGINEERING LABORATORY

************* ******

*****************

PRECIPITATION DATA FILE:TEMPERATURE DATA FILE:SOLAR RADIATION DATA FILE:EVAPOTRANSPIRATION DATA:SOIL AND DESIGN DATA FILE:WATER ROUTING OUTPUT FILE:OUTPUT DATA FILE:

C:\addams\helpq\DATA4.D4C:\ADDAMS\HELPQ\DATA7.D7C:\ADDAMS\HELPQ\DATA13.D13C:\ADDAMS\HELPQ\DATA11.DllC:\ADDAMS\HELPQ\DATA10.D10C:\ADDAMS\HELPQ\Unlined.Dl4C:\ADDAMS\HELPQ\Unlined.OUT

ME: 15:44 DATE: 7/ 9/2001

TITLE: LEHR/SCDS WBH 1999 to 2001

NOTE: INITIAL MOISTURE CONTENT OF THE LAYERS AND SNOW WATER WERECOMPUTED AS NEARLY STEADY-STATE VALUES BY THE PROGRAM.

LAYER


THICKNESS = 6.00 INCHESPOROSITY = 0.3650 VOL/VOLFIELD CAPACITY = 0.3050 VOL/VOLWILTING POINT = 0.2020 VOL/VOLINITIAL SOIL WATER CONTENT = 0.2914 VOL/VOLEFFECTIVE SAT. HYD. COND. = 0.270000010000E-05 CM/SEC

Page 1

UnlinedNOTE: SATURATED HYDRAULIC CONDUCTIVITY IS MULTIPLIED BY ^.8O

FOR ROOT CHANNELS IN TOP HALF OF EVAPORATIVE ZONE.

LAYER


THICKNESS = 60.00 INCHESPOROSITY - = 0.4190 VOL/VOLFIELD CAPACITY = 0.3070 VOL/VOLWILTING POINT = 0.1800 VOL/VOLINITIAL SOIL WATER CONTENT = 0.3153 VOL/VOLEFFECTIVE SAT. HYD. COND. = 0.189999992000E-04 CM/SEC

LAYER


THICKNESS = 60.00 INCHESPOROSITY = 0.4370 VOL/VOLFIELD CAPACITY = 0.3730 VOL/VOLWILTING POINT = 0.2660 VOL/VOLINITIAL SOIL WATER CONTENT = 0.3735 VOL/VOLEFFECTIVE SAT. HYD. COND. = 0.359999990000E-05 CM/SEC

LAYER


THICKNESSPOROSITYFIELD CAPACITYWILTING POINTINITIAL SOIL WATER CONTENT =EFFECTIVE SAT. HYD. COND. = 0.639999998000E-04 CM/SEC

240.00 INCHES0.4640 VOL/VOL0.3100 VOL/VOL0.1870 VOL/VOL0.3142 VOL/VOL

GENERAL DESIGN AND EVAPORATIVE ZONE DATA

NOTE: SCS RUNOFF CURVE NUMBER WAS COMPUTED FROM DEFAULT

Page 2

UnlinedSOIL DATA BASE USING SOIL, TEXTURE #24 WITH BAKEGROUND CONDITIONS, A SURFACE SLOPE OF 1.% 'ANDA SLOPE LENGTH OF 30. FEET.

SCS RUNOFF CURVE NUMBERFRACTION OF AREA ALLOWING RUNOFFAREA PROJECTED ON HORIZONTAL PLANEEVAPORATIVE ZONE DEPTHINITIAL WATER IN EVAPORATIVE ZONEUPPER LIMIT OF EVAPORATIVE STORAGELOWER LIMIT OF EVAPORATIVE STORAGEINITIAL SNOW WATERINITIAL WATER IN LAYER MATERIALSTOTAL INITIAL WATERTOTAL SUBSURFACE INFLOW

97.00100.0

0.1856.01.7492.1901.2120.000

118.480118.480

0.00

PERCENTACRESINCHESINCHESINCHESINCHESINCHESINCHESINCHESINCHES/YEAR

EVAPOTRANSPIRATION AND WEATHER DATA

NOTE: EVAPOTRANSPIRATION DATA WAS OBTAINED FROMSACRAMENTO CALIFORNIA

STATION LATITUDEMAXIMUM LEAF AREA INDEXSTART OF GROWING SEASON (JULIAN DATE)END OF GROWING SEASON (JULIAN DATE)EVAPORATIVE ZONE DEPTH _ . .AVERAGE ANNUAL WIND SPEEDAVERAGE 1ST QUARTER RELATIVE HUMIDITYAVERAGE 2ND QUARTER RELATIVE HUMIDITYAVERAGE 3RD QUARTER RELATIVE HUMIDITYAVERAGE 4TH QUARTER RELATIVE HUMIDITY

38.40 DEGREES1.00

733196.0 INCHES8.10 MPH77.00 %60.00 %55.00 %73.00 %

NOTE: PRECIPITATION DATA FOR Davis


California

NOTE: TEMPERATURE DATA FOR Davis California


NOTE: SOLAR RADIATION DATA WAS SYNTHETICALLY GENERATED USINGCOEFFICIENTS FOR SACRAMENTO CALIFORNIAAND STATION LATITUDE = 38.40 DEGREES

Page 3

Unlined

AVERAGE MONTHLY VALUES IN INCHES FOR YEARS 1974 THROUGH 1999

JAN/JUL FEB/AUG MAR/SEP APR/OCT MAY/NOV JUN/DEC

PRECIPITATION

TOTALS

STD. DEVIATIONS

RUNOFF

TOTALS

STD . DEVIATIONS

EVAPOTRANS P I RAT I ONkP TOTALS

STD. DEVIATIONS

PERCOLATION/LEAKAGE

TOTALS

STD. DEVIATIONS

40

30

20

20

10

00

.08

.03

.37

.12

.412

.004

.551

.021

.082

.046

.305

.120

30

30

20

20

10

00

THROUGH LAYER

00

00

.3259

.0955

.1380

.1007

00

00

.77

.04

.20

.11

.205

.000

.364

.001

.220

.033

.516

.100

4

.2827

.0729

.1178

.0792

30

20

10

10

10

00

00

00

.27

.30

.47

.59

.511

.090

.558

.265

.620

.062

.721

.090

.2974

.0837

.1116

.0894

10

10

00

00

00

00

00

00

.01

.79

.11

.79

.317

.303

.756

.459

.629

.146

.529

.138

.2662

.1513

.1111

.1488

02

02

01

01

00

00

00

00

.54

.25

.77

.10

.186

.169

.371

.343

.483

.484

.427

.456

.1791

.1972

.1100

.1613

0.192.86

0.352.04

0.0491.531

0.1701.371

0.2030.856

0.2870.533

0.12510.2895

0.10330.1526

AVERAGE ANNUAL TOTALS & (STD. DEVIATIONS) FOR YEARS 1974 THROUGH 1999

INCHES CU. FEET PERCENT

RECIPITATION 19.14 ( 7.679) 12851.1 100.00

RUNOFF 9.778 ( 5.3121) 6566.49 51.097

Page 4

UnlinedEVAPOTRANSPIRATION 6.865 ( 1.6288} 460.9.87 35.871

PERCOLATION/LEAKAGE THROUGH 2.36673 ( 0.94301) 1589.375 12.36757LAYER 4

-HANGE IN WATER STORAGE 0.127 ( 1.3922) 85.40 0.665

*******************************************************************************

D

PEAK DAILY VALUES FOR YEARS 1974 THROUGH 1999

(INCHES) (CU. FT.)

PRECIPITATION 3.38 2269.839

RUNOFF 3.242 2176.9546

PERCOLATION/LEAKAGE THROUGH LAYER 4 0.024208 16.25656

SNOWWATER 0.99 663.7730

MAXIMUM VEG. SOIL WATER (VOL/VOL) 0.3598

MINIMUM VEG. SOIL WATER (VOL/VOL) 0.2020

r******************

D*****************

FINAL WATER STORAGE AT END OF YEAR 1999

LAYER

1

2

3

4

SNOW WATER

(INCHES)

1

18

22

78

0

.7454

.8027

.3955

.8429

.000

(VOL/VOL)

0

0

"- 0

0

.2909

.3134

.3733

.3285

******************************************************************************

Page 5

Fine Sandy Loam

Clay Loam

Compacted Sandy Clay Loam

Compacted Fine Sandy LoamCompacted Clay Loam

Clay Loam

10

Scenario #1Prior to WBH IRA

1974 -1998

Dog Pens

Scenario #2Following SBH IRA

1999 - present

Dog Peris

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