MAR a u 1993
POST OU1 REMEDIATION
SECOND QUARTERLY REPORTGROUNDWATER MONITORING PROGRAM
Shaw Avenue SiteCharles City, Iowa
MARCH 1993REF. NO. 2227 (19)This report is printed on recycled paper.
CONESTOGA-ROVERS & ASSOCIATES
1.0 INTRODUCTION
This report, prepared by Conestoga-Rovers & Associates (CRA), the SupervisingContractor, on behalf of the City of Charles City (City) and Solvay Animal Health,Inc. (SAH), presents a summary of the second quarterly groundwater monitoringactivities completed under the Groundwater Monitoring Program (GMP). The GMPwas submitted as an appendix to and forms part of the Remedial Action Plan forOperable Unit 1 (OU1) at the Shaw Avenue Site.
2.0 SITE BACKGROUND
The Shaw Avenue Site (Site) is located along the southeast limit of the City ofCharles City, Floyd County, Iowa. The Site is situated south of Clark Street,approximately 500 feet east and 200 feet north of the Cedar River. The Site is ownedby the City of Charles City. The City of Charles City Wastewater Treatment Plant(WWTP) is located immediately to the east of the Site.
On February 28,1992, the City and SAH entered into a Consent Decree (CD) withU.S. EPA Region VII for remediation of OU1. Consistent with the ROD andpursuant to the CD, the remedial action for OU1 consisted of excavation, off-sitetreatment and disposal of chemical fill and excavation and off-site disposal ofcontaminated soil exhibiting concentrations of arsenic or cadmium above theperformance standards.
In April and May 1992, the remedial action for OU1 was completed. The chemicalfill was treated prior to landfilling at a Chemical Waste Management, Inc. (CWM)RCRA authorized landfill using Best Practical Means as determined from CWMtreatability studies and the availability of treatment facilities at the RCRAauthorized CWM landfill. The contaminated soil was landfilled, withouttreatment, at a RCRA authorized CWM landfill.
3.0 GROUNDWATER MONITORING PROGRAM
A total of 31 monitoring wells and three private wells form the groundwatermonitoring network. Figure 3.1 shows the location of all monitoring wells.
From December 1, 1992 through December 8, 1992, CRA conducted the second postOU1 remediation quarterly groundwater quality monitoring event at the Site.Sample collection data sheets completed in the field at the time of sampling andChain-of-Custody Records are presented in Appendix A. Groundwater sampleswere collected pursuant to the protocols described in the GMP and were analyzed byWadsworth/ALERT Laboratories of North Canton, Ohio.
The Wadsworth/ALERT laboratory reports have been validated by CRA's qualityassurance/quality control (QA/QC) officer based upon a review of standard qualitycontrol criteria established in the analytical methods. The Data Quality Assessmentand Validation report is presented in Appendix B.
4.0 POTENTIOMETRIC GROUNDWATER CONTOURS
Potentiometric groundwater contours based on groundwater levels measured at theSite during second quarterly groundwater monitoring are shown on Figure 4.1.Table 4.1 presents a summary of the post OU1 remediation potentiometricgroundwater level measured at the Site.
Figure 4.1 shows that groundwater flow is west to southwest towards the CedarRiver. A local perched alluvium aquifer is observed in the area of monitoring wellnests MW8 and MW12, consistant with the RI data.
5.0 GROUNDWATER DATA SUMMARY
Table 5.1 summarizes the results of analyses for the second post OU1 remediationquarterly groundwater quality monitoring event at the Site. Table 5.2 summarizesthe results of analyses for the first quarterly groundwater quality monitoring eventat the Site previously presented in the First Quarterly Report.
As shown on the tables the two rounds of data are consistent.
Additional quarterly sampling data over a period of time are required to evaluatethe effectiveness of the OU1 remediation relative to the contaminant concentrationsfrom the Site in the groundwater.
MW-17
LEfiEtiD• MONITORING WELL LOCATION
CRA2227 (19) FEB.16/93 REV.O
figure 3.1mnt MONITORING WELL LOCATIONSGROUNDWATER MONITORING PROGRAM
Shaw Avenue Site
(975. OJ)
CRA
LEGEND• MONITORING WELL LOCATION
-978—— POTENTIOMETRIC GROUNDWATER CONTOUR
HOWARD R. CKEH COMPANY. CON9UL1MO ENWWBB.SHAW AVENUE DUMP STE. OUXLES Crnr, IOWA. 1MB.
POTENTIOMETRIC GROUNDWATERELEVATION (AMSL)
GROUNDWATER ELEVATION ASSUMED TO BEIN ERROR. NOT USED IN CONTOURINGPOTENTIOMETRIC GROUNDWATER ELEVATIONS.
GROUNDWATER FLOW DIRECTION
figure 4.1POTENTIOMETRIC GROUNDWATER CONTOURS
SECOND QUARTERLY SAMPUNG (DEC.92)GROUNDWATER MONITORING PROGRAM
Shaw Avenue Sfte2227(19)-FEB.8/93-REV.O
TABLE 4.1
SUMMARY OF POTENTIOMETRIC GROUNDWATER LEVELSPOST OU1 REMEDIATION
SHAW AVENUE SITE, CHARLES CITY, IOWA
WellNumber ID
MW-1MW-1AMW-1BMW-2MW-2AMW-3MW-3AMW-4MW-4AMW-4BMW-6MW-6AMW-7MW-8MW-8AMW-9MW-10MW-11MW-12MW-12AMW-13MW-14MW-15MW-15AMW-15BMW-16MW-17MW-18MW-18AMW-19
Top of CasingElevation
(AMSL ft.)
992.55993.44993.49986.48986.32990.78991.14993.05992.43992.211004.621004.591006.431013.641013.89998.01995.531006.51019.221019.241007.861004.821003.061003.341003.291005.511007.41017.741017.871012.95
GroundivaterElevation
Dec-92(AMSL ft.)
975.01974.92974.92975.18974.83975.67975.2975.65975.45975.45981.57975.75981.79984.84994.84979.94981.31994.52986.661012.98985.99983.51975.45975.33975.36985.49983.19992.071013.25985.96
Page 1 of 2
TABLE S.I
POST OU1 REMEDIATIONQUARTERLY SAMPLING SUMMARY
SHAW AVENUE SITE, CHARLES CITY, IOWA
Monitoring Wdl IDDale SampledParameter (
301 Shaw12/2/92
MS Shaw i1212192
MW-I12/0/92
MW-M1218/92
MW-lfl12M92
MW-212/7/92
MW-2A12/7/92
MW-J1212192
MW-M1212192
MW-412/3/92
MW-M12/3/92
MW-4B12/3/92
MW-61214/92
MW-M1214/92
MW-712/1/92
MW-«12/4/92
MW-M1214192
MW-912/1/92
Vinyl Chloride1.1-Dichloroethene1.2-DichJoroe thane1,1,2-Trichloroe thane
10U 3) 10U 10U/10U 10U10U 15 4) 10U/10U 10U10U 2) 10U 3J/3J 10U10U 13 3) 10U/10U 10U
&L2
BenzeneTolueneXylene (Total)
293114
SttA
2-Nitroanitine 25U 46)
Arsenic (Total)Manganese (Total)
2.0UJ3.0U
2.0UJ71.5
4.5)U(5.5)
4.7)238
5.0J876
241J/252)22.1/19.3
3.1)3270
17.7141
18.2J3«70
2.0U)30.7
5.0)821
5.2)6980
1401260
1.4J430
49544.5
5880211
4.0)1230
9.2816
Notes:
U = Compound was analyzed for but not detected. The associated numerical value is the sample quantiution limit.] = The analyte was positively identified; the associated numerical value is the approximate concentration of the analyte in the sample.
U) - The analyte was not detected above the reported sample quantiution limit; however, the reported quantitalion limit is approximate and may or may not represent the actual limit./ = Indicates results of duplicate analysis.~ = Analysis was not conducted for this parameter.
Page 2 of 2
TABLE S.1
POST OU1 REMEDIATIONQUARTERLY SAMPLING SUMMARY
SHAW AVENUE SITE, CHARLES CITY, IOWA
Monitoring Well IDDale S«mp(<-JParamtttr(iiglL)
StU.
Vinyl Chloride1.1-Dichloroelhene1.2-Dichloroethane1,1,2-Trichloroethane
MW-tO12/1/92
MW-1112/1/92
MW-I212/2/92
MW-12A12/2/92
MW-I312/3/92
MW-1412/3/92
MW 1512/7/92
MW-1SA12/7/92
MW-1SB12/7/92
MW-1612/2/92
MW-1712/3/92
MW-li12/1/92
MW-UA12/1/92
MW-1912/4/92
BenzeneTolueneXylene (Total)
1200490011000
18030240
10073120
10U/10U10U/10U10U/10U
2 Nitroaniline 25U/25U
Ansenic (Total)Manganese (Toul)
671570
11995.4
7.816.7
4.21360
17.32130
239794
10.8]62.4
6.4)2260
58)18200
3.1595
72.6862
l.OUJ40.2
6.2892
55.5/52.818.1/18.0
Moles:
U = Compound was analyzed for but not detected. The associated numerical value is the sample quantitation limit.J = The analyte was positively identified; the associated numerical value is the approximate concentration of the analyte in the sample.
U| = The analyte was not detected above the reported sample quantitation limit; however, the reported quantitation limit is approximate and may or may not represent the actual limit./ = Indicates results of duplicate analysis.- = Analysis was not conducted for this parameter.
TABLE 5.2 Page 1 of 2
Monitoring Well IDDate SampledParameter (flglL)
301 Shaw 305 Shaw (F)9114192 9/14192
MW-19/9192
MW-1A9/9192
MW-IB9/9192
POSTOU1 REMEDIATIONQUARTERLY SAMPLING SUMMARY
SHAW AVENUE SITE. CHARLES CITY. IOWA
MW-29110192
MW-2A9/10192
MW-39/8192
MW-3A9/8J92
MW-49/15192
MW-4A9/15/92
MW-4B9115/92
MW-6919/92
MW-6A9111192
MW-79/8/92
MW-S9/15192
MW-8A9115192
MW-99110/92
Vinyl Chloride1,1-Dichloroelhene1 ,2-Dichloroethane1 , 1 ,2-Trichloroetf tane
100 3J10U 1310U 10U10U 11
10U 10U/10U 10U10U 10U/10U 10U10U 5J/5J 10U10U 10U/10U 10U
SeaBenzeneTolueneXylene (Total)
690820J370
2-Nitroaniline 25U 19J
SellArs«iic (Total) 3.0U 3.0U 9.8J 5.3J 3.0J 300J/269J 30UJ 5.3J 18.7] 4.3 6.2 3.01) 932J 3.0UJ 596J 5300 3.6 3.0UJArsenic (Dissolved) - 3.0U -- 237 - - - - - - -- - - 5440 5.3 3.0UManganese (Total) 3.0U 153 10.2J 616J 991J 21.7J/51.3J 3900J 118) 9590J 192 582 12900 2390J 777J 83.5) 160 728 164JManganese (Dissolved) - 64.6 - 20.3 - - -- - -- - -- -- - 78.3 97.7 3.0U
Notes:
U = Compound was analyzed for but not detected. The associated numerical value is the sample quantitation limit.J = The analy te was positively identified; the associated numerical value is the approximate concentration of the analy te in die sample.
UJ = The analyte was not detected above the reported sample quantitation limit; however, the reported quantitation limit is approximate and may or may not represent the actual limit./ = Indicates results of duplicate analysis.-- - Analysis was not conducted for this parameter.
1 I I I I I
TABLE 5.2
POSTOU1 REMEDIATIONQUARTERLY SAMPLING SUMMARY
SHAW AVENUE SITE, CHARLES CITY, IOWA
Page 2 of 2
Monitoring Well ID MW-W MW-11Dale Sampled 9111192 9/11/92Parameter (flg/L)
SeU.Vinyl Chloride1 ,1-Dichloroethene1,2-Dichloroethane - -1,1,2-Trichloroethane — —
Benzene - —Toluene - —Xylene (Total)
2-Nitroaniline — —
&CLAArsenic (Total) 46] 81.4}Arsenic (Dissolved) — —Manganese (Total) 493] 148JManganese (Dissolved) — —
MW-I2 MW-12A MW-139/11/92 9/10/92 9/8/92
-
__
1600]9100]34000
-
7.0 3.0UJ 16.3]
13.8 1570] 2870]
MW-14 MW-15 MW-1SA MW-15B MW-169/11/92 9/14/92 9/14/92 9/14/92 9/10/92
-
_ _ _ _ . ._
10U -10UJ -10U -
- - - - - -
780] 5.0 8.6 3.0U 30UJ
725] 95 4220 36000 165]
MW-I7 MW-18 MW-1M MW-199/15/92 9/15/92 9/14/92 9/15/92
-
_
"
580 - - 10U/10U180 - - 10U/10U120 - - 10U/10U
- 25U/25U
71.0 3.0U 5.5 25.4/22.229.9/42.3
1280 1780 1490 54.6/27.5-- - - 23.6/21.1
Note
U = Compound was analyzed for but not detected. The associated numerical value is the sample quantitation limit.J = The analyte was positively identified; the associated numerical value is the approximate concentration of the analyte in the sample.
UJ = The analyte was not detected above the reported sample quantitation limit; however, the reported quantitation limit is approximate and may or may not represent the actual limit./ - Indicates results of duplicate analysis.
— = Analysis was not conducted for this parameter.
APPENDIX A
SAMPLE COLLECTION DATA SHEETS
Waterloo File CopyMEMORANDUM
TO: Ed Roberts REFERENCE NO. 2227
FROM: Sue Swanson <$*> DATE: December 15,1992
RE: Quarterly Sampling - Shaw Avenue Site, Charles City, Iowa
Quarterly ground water sampling was conducted from December 1, 1992 throughDecember 8, 1992, at the Shaw Avenue Site in Charles City, Iowa. Sampling wascarried out by Sue Swanson and Eric Hoglund under the guidelines described in theCRA Remedial Investigation (RI) Report, June 1990.
Table 1 summarizes stabilization and sampling information for all sample locations.Further sampling information is presented on the sample collection data sheetswhich are attached.
All samples were submitted for analysis to Wads worth/Alert Laboratories understandard chain-of-custody procedures. Chain-of-custody records are attached.Samples were analyzed for the appropriate sets of contaminants as listed on Table 1.
TABLE 1
SHAW AVENUE SITESUMMARY OF SAMPLING
DECEMBER 1992
I of 2
Well
301 Shaw Ave.
305 Shaw Ave. (front)
305 Shaw Ave. (back)
MW-1
MW-1A
MW-1B
MW-2
MW-2A
MW-3
MW-3A
MW-4
MW-4A
MW-4B
MVV-6
MW-6A
MW-7
MW-8
MW-8A
MW-9
One WellVolume (gal.)
ran pump 5 min.
ran pump 5 min.
Total VolumeRemoved (gal.)
prior to sampling
prior to sampling
FinalEH
7.6
7.5
FinalConductivity
(umhos)
390
370
FinalTemp. (XT)
14
9
Water Clarity
Clear
Clear
Sample ID No.
W-921202-SS-014
W-921202-SS-015
ContaminantSets for
Analysis
4 '
4
pump not working, unable to sample
30.8
2.5
2.6
27.9
3.2
8.3
1.4
34.6
1.5
3.0
10.9
1.2
4.7
4.3
0.1
8.9
101
7.5
9
90
14
23.5
4.5
118
4.5
9.0
40
8 (bails dry)
15
9.5 (bails dry)
0.3 (bails dry)
36
8.2
7.9
7.7
8.3
8.2
7.8
7.2
7.8
7.7
7.4
7.6
8.1
7.4
7.7
8.1
7.5
345
700
700
700
335
470
820
500
600
700
400
450
395
450
350
470
8.5
10
9
10
13
10
11
9.5
9.5
9
9
11
10
10
8
11
Clear
Cloudy, Brown
Cloudy, Brown
Clear
Cloudy, Brown
Clear
Cloudy, Brown
Clear
Cloudy, Lt. Brown
Cloudy, Brown
Clear
Cloudy
Clear
Cloudy, Green
Cloudy, Brown
SI. Cloudy
W-921208-SS-005
W-921208-SS-006
W-921208-SS-007
W-921207-SS-008W-921207-SS-004 Dup.
W-921207-SS-009
W-921202-SS-017
W-921202-SS-018
W-921203-SS-019
W-921203-SS-020
W-921203-SS-021
W-921204-SS-001
W-921204-SS-022
W-921201-SS-023
W-921204-SS-013
W-921204-SS-024
W-921201-SS-025
1,4
1, 4 (MS, MSD)
1,4
1,4
1,4
4
4
4
4
4
2,3,4
4
4
3,4
4
4
TABLE 1
SHAW AVENUE SITESUMMARY OF SAMPLING
DECEMBER 1992
2 of 2
Well
MW-10
MW-11
MW-12
MW-12A
MW-13
MW-14
MW-15
MW-15A
MW-15B
MW-16
MW-17
MW-18
MW-18A
MW-19
One WellVolume (gal.)
5.8
5.3
24.9
1.7
16.9
7.8
12.4
5.5
3.5
7.0
24.4
7.0
1.7
18.3
Total VolumeRemoved (gal.)
18
16
53 (pumps dry)
6
50
26.5
42
16.5
10.5
21
77
6.5 (bails dry)
10
61 (pumps dry)
FinaleH7.7
8.4
9.6
7.0
-
7.5
8.2
7.7
7.6
7.6
7.6
12.6
7.3
8.7
FinalConductivity
(umhos)
280
360
200
600
-
450
355
800
900
440
380
800
750
330
FinalTemp. CO
10.5
9
8
10.5
-
10
10
10
9
11
9
8
10
9-
Water Clarity
Cloudy
SI. Cloudy
Cloudy
Cloudy,Brown/Orange
Clear, StrongProduct Odor,Black Colloidal
Material
Clear
Clear
Cloudy, Brown
Cloudy, Brown
Cloudy, Brown
Clear
Cloudy
Cloudy, Brown
Clear
Sample ID No.
W-921201-SS-026
W-921201-SS-027
W-921202-SS-028
W-921202-SS-029
W-921203-SS-010
W-921203-SS-011
W-921207-SS-030
W-921207-SS-031
W-921207-SS-032
W-921202-SS-033
W-921203-SS-012
W-921201-SS-035
W-921201-SS-034
W-921204-SS-002
ContaminantSets for
Analysis
4
4
4
4
2,4
2,4
4
4
4
4
2,4
4
4
2,3,4W-921204-SS-003 Dup.
Notes:
Contaminant SetsSet 1: Vinyl Chloride, 1,1-Dichloroethene, 1,2-Dichloroethane and 1,1,2-TrichloroethaneSet 2: Benzene, Toluene and XyleneSet 3: 2-NitroanilineSet 4: Arsenic and Manganese
SAMPLE COLLECTION DATA SHbcT - GROUNDWATER SAMPLING PROGRAMPROJECT NAME SKcuo AvrC- S.-VO PROJECT NO. a a SOSAMPLING CREW MEMBERSDATE OF SAMPLE COLLECTION
SAMPLEI.D.
NUMBER
SS-ooi
W-SZI204-
SS -003
"• 7SS-ooS
CI8"oJ -£|ZI2D8"SS> -OO7
W~^1IZ.O"?-
SS-oofc
<SS -00^
WELLNUMBER
^
rrioj \°[
(Y\OJ \0j
*Yiu> 7.
muj I
rmO/A
•nw.ft
^Z
moJZA
T.O.C.ELEVATION
,«».*
**..*
•KW
*M
<**.<*
QL Q.I /\ 01 oto t I o
O v »"j7_
'UA- Stoanfeov^ £rrc, HoaluncLIZ/OI/S2. I2./08/92,
SUPERVISOR j S'oocmSon
WELLDEPTH
(ft. bloc)
5Z.5S
55-10
ss,o.
6 .15
•W.S5
B<«
3-1.-15
64.as
^.So
WATERDEPTH
(II. bloc)
«.05
2^
X.M
U.3C
n.5.
I Q /•* *^O • ^^ L.
\ft.51
U.^O
\ \ .4S
WATERELEVATION
-UM.S-.
Q"lcT k Qt Iji * O
•Vfi.o,
1-,1-IZ
Q "" 1^4 Q O
Q '*1 CC I Q.n 1 ^ . 1 0
•mgj
WELLVOLUME(gallons)
10. <?
18.
i ft ^» O • /J
ai.s
30-8
2.5
Z.b
xi. q
3.2.
VOLUMEPURGED(gallons)
40
dr>^(^>l
pumps
Ho
101
-1*1%14
FIELDPH
-7.^
6.1
8.1
8.
8.Z
T1
T.1
8-3
8.2
FIELDTEMP.
•c.
V
<,.
i-
10'
85'
10'
T
10V
\y
FIELDCOND.
^00
330
VO
100
345
™
~ioo
100
335
TIME
1 12-
<*«
09*14
I34U
W
IMO
<ns,
Wte
I**
SAMPLEDESCRIPTION& ANALYSIS
Cic-fttr^
VOC-s Set 2,c\ear[}U^f> - Mt-ValS,gAjAs. VOCs Se4 "2.C\ear DuP -
/v\tA<x\s. VOCs Set/
C-loudy bro^oMS./A'^bN\e.A<x\s. VOCs Stt \
IvxeAoJs. vJOC,s Set'1
Cieoj-
Wvdka^S ^0Ci> Sfct I
ADDITIONAL COMMENTS
PROJECT NAMESAMPLING CREW MEMBERSDATE OF SAMPLE COLLECTION
SAMPLE COLLECTION DATA SHbcT - GROUNDWATER SAMPLING PROGRAM
• SrVe,_________________________________ PROJECT NO.____ SUPERVISOR '£riC
'2rOfl/9Z
SAMPLEI.D.
NUMBERuv-q 2.12.03-SS -010
w-<U>2o3-SS-oH
Ui-lZ.lL03-SS-o^
VjJ-qziZjQ/1-
SS-oii
w-qzjLoz.-SS,-o\A
UJ -12. 12.02-
S2>-o\5
w -9Z/^oz-
SS-on^>i•£^^l^.o^-^S-Olft
WELLNUMBER
onuy\3
tr\u)l4
mw 11
moo ft
So\StxxuiAvje.
30SSWxiu A'Jd.(.Frorrt}
306ShouiA^e.
C6act
OHU33
WVJJ3>A
T.O.C.ELEVATION
\oon.&^
\oo^.fii
^oiv\\
R^O-iB
^\.H
WELLDEPTH
(ft. bloc)
41 -S\
33-^
U'lo
35.^o
21. 8>
2^.^
WATERDEPTH
(ft. bloc)
2\.8~1
a\-!>\
54.^1
.28.9O
15.1)
16. ^
WATERELEVATION
'tes.'n
^^.B\
Sft^.31
•
S15.io"?
Rl^.^o
WELLVOLUME(gallons)
iu.^
1.B
24.4
ftxitS C)ry
43
8,3
1.4
VOLUMEPURGED(gallons)
50
i
Zip. 5
"11
°l-5rtxn pu-ifvip
5 <n»o.
ran purnp
5 <*i«o.
33.5
4.5
FIELDPH
—
l.S
1.U>
1.1
l.lo
"7-5
•7. a
i.
FIELDTEMP.
—
10'
^
10'
14'
°\*
10*
\ \ *
FIELDCOND.
—
450
38o
450
3%
310
^10
8ZO
TIME
1530
1334
IL>6»
0^50
KoZ-q
11032
1330
l! 5
SAMPLEDESCRIPTION& ANALYSIS
Cltan ^trbnq'pfjxiut •xJor Va'jact. colUvdflliy>a.H-er>CX.lMe4Ms VOCsSetZ-C^earMeA^S.M^CsSeVZ
Ciea^
N\t4a^S, \jOCs SeVZ,Cloudv/ ( gx«en
N\tVa.l5, "&NA*
Ckar
/V\e.4alS
dear
fne^aisjixtvip rtffV *Oor|L(nfl
unatlc. •Vo ^anaple.
dAear-
Me-t-als
clo^dvy bn>uio
ftteUls
ADDITIONAL COMMENTS
SAMPLE COLLECTION DATA SHfccT - GROUNDWATER SAMPLING PROGRAMPROJECT NAME S^ouuJ AM<L. ^»A«_ PROJECT NO. ,3^50SAMPLING CREW MEMBERSDATE OF SAMPLE COLLECTION '
SAMPLEI.D.
NUMBERLJQ - jZIZ.O^~O^. -• A iC\
mHWSr
W -S2. 12.03-
SS-02.1
w -i2.it- <A-SS-O7.7
u)-qi>Z*C-
Ss>-o2.-^
mifcOI-
SS - 07-to
SS. - 021
, UJL oujonSon,/^-/ 01/92.- /i/
Crrc Hoqlund SUPERVISOR Su*. ^wanSonOSH'Z- •
WELLNUMBER
mu,4
m«4A
mu*6
«*»«,
«,«a-,
MWM
m^s
mu.,0
mw«
T.O.C. |ELEVATION
<m.os
^Z.^3
1 .Z.
1004. s^
\00(o,Ai
io\^.~]5
^6.OX
W.53
\ooio.50
WELLDEPTH
(ft. btoc)
10..S
iU.,.1
3S.9L
3U.5U
57.^0
w.-,a
3,
2i.n
45.Z.
WATERDEPTH
(ft. bloc)
n.4o
.u.ift
U.I,i«.««:w*.OS
\ft.oi
rt.Z2.
.I.S6
WATERELEVATION
<m>s
ITS.*
•ns.*
STS.T6
% \.~fl
C\£'W ~JO
Q-jb C3<4
%,.3>
W.52
WELLVOLUME(gallons)
3^^
1-5
3.0
uz
4.T
o. t
8-S
•5.8)
^
VOLUMEPURGED(gallons)
IIB
4.S
9.0
18 ^
16
fl-3
3^
.6
1.
FIELDPH
7.6
"7-1
1.48.1
-7.4
8.)
"7.5
"7.-?
8.4
FIELDTEMP.
..5"
q.s*
9-
ir
10"
8-
irIO.S
r
FIELDCCND.
Sco
(oOO
"700
450
?15
350
410
260
3to
TIME
(OS!
,,,5
,0V.
O1) IS
1412.
0<,S5
<W5
!U>Z
«ZO
SAMPLEDEXRIPTION& ANALYSIS
Clear,
MtHalS
Me4alS
AAe.-Va.lsCloudy
Clear
MeVoJs
Clo'-'-dy ( biDOJii
/V\e.-V<vlsQ\iQVv\>Y clou-dLy
MfVfl.1 S
1
Sli^hiVy c loixdy
l^fcVa^S
ADDITIONAL COMMENTS
I t
SAMPLE COLLECTION DATA SHbcT - GROUNDWATER SAMPLING PROGRAMPROJECT NAME S^cuuJ AvrtL. Si-je, ____________SAMPLING CREW MEMBERS SLJL StoahSon En'c HoDATE OF SAMPLE COLLECTION - l2joW?2.
PROJECT NO.SUPERVISOR '
SAMPLEI.D.
NUMBERw-lziioi-SS-028
W-<l2.t7j02-
SS-oz^
^-9Xl2jD>
3>S,-C3,0
\0-<UI2X>7-
SS-cai
v-o-fe-lio-;-SS-o^z
W-CHHO^T
SS-033
UH2I10I -
SS-o?4
u>-q2.iioT-SS-03S
w-qDTJCS-SS-o^b
WELLNUMBER
f^vjoiT.
mwiiA
ravvi»5
muii A
mvxii5B
rf\^\Vo
m\xi\$A
rviuj\^
mvo\^
T.O.C. 1ELEVATION
\oiq.24
io\q.7.i
\ooi.oio
lOO .li
1 003.1
WELLDEPTH
(fl. bloc)
lO.Bt
'tvi,.-i\
•-15
tol-UO
.1&
30-11
\5.oS
3^o. &0
WATERDEPTH
(II. bloc)
32.6 b
b.2.b
2T?.(c\
28-01
a-l.0!
ZC.02-
A.^l
2«S.(o1
WATERELEVATION
^^.(0%
IDII.%
S"15.
^16. 3
S15.
•
WELLVOLUME(gallons)
24 fl
mo
12. -10
5.6
3.6
-/.o
in
n.o
VOLUMEPURGED
(gallons)pumps dry
53
(o
4Z
lb.«S
10. c,
Zl
/oVxx(\S> dnj
t-6
FIELDpH
°l.b
1-0
8.7.
nn
•~?.u»
l.le
1-3
iz.^
FIELDTEMP.
8'
10.5*
10*
IOV
°T
II'
ID-
S-
FIELDCOND.
aco
(oOO
355
800
°|00
^0
15"0
800
TIME
I5ZO
1520
1550
I(o2l
\5^
1043
noo
Il4(o
SAMPLEDESCRIPTION& ANALYSIS
Cloudy
MekilSCloixxly f bfClon/onxn
MeWsC\ear;
/V\eWS
C\oudy ( bnnon
(V\e-Va.lScAoutky , broiPn
mt\a.\<:,
c\oi^.cJ-Y( VD <T}tjon
MeAalScloudy ( brtiwn
MetalsCloudy
MfcVaiS
R^nscJte-B\ank_2X ^Oml MOCS-
ADDITIONAL COMMENTS
CuLOPROJECT NAME _SAMPLING CREW MEMBERSDATE OF SAMPLE COLLECTION
SAMPLE COLLECTION DATA SHfccT - GROUNDWATER SAMPLING PROGRAM
________________PROJECT NO._____ SUPERVISOR '
SAMPLEI.D.
NUMBERio-1z.izo -
SS-031
WELLNUMBER
mv^iq
T.O.C. 1ELEVATION
WELLDEPTH
(ft. bloc)
WATERDEPTH
(ft. bloc)
WATERELEVATION
WELLVOLUME(gallons)
VOLUMEPURGED
(gallons)
i
FIELDpH
FIELDTEMP.
FIELDCOND.
-
TIMESAMPLE
DESCRIPTION& ANALYSIS
R» n SoJCBA*n fc-2. X 45ml MflC.S
ADDITIONAL COMMENTS
f*D A SHIPPED TO (Laboratory name):WrvAHk Consult Ing Engineers . -^CONESTOGA-ROVERS & ASSOCIATES WAttf Ud*T *J / tf Lt *T LrtSS651 Colby Drive, Waterloo. Ontario Canada N2V 1C2
CHAIN OF CUSTODYRECORD
PROJECT M»:
F>7 /PROJECT NAME:
SflrtW ^J£ SiTfc.-,
SAUPIfR'S aRNATIJRE . < X,J, "^ " '/ f& L^ \S
SEQ.M».
iV-j-«?;W-T;w-rk>~?'lA/-^7
UM;t/~<?7VI-TUHhM;
V
i
SAMPLE N°.
•Sinoz-iST-^?J7 0? -SVfl/n.r»?-«- onl?6?-S<.-otP,»10|-SS-t»73
.troi-*>s -AK.S.I7f)l- 5^-076
./!/>; ' ^5-OZL7not- <;<-ot8llOl-S^-n^'S
^no7-ss-«??/Zot.-^-o1<\\\\\\
>
(SMM) ^
DATE
,y /7-02-
- /?'0l
fZ-oZ.«^-o^ta - oi
' /?-o/
xt -o //? -rt/
/?-<*Z-/7-o-Z-/2-oz./7-0I
/////
//
TIME
/6ZV/63Z.
13.^0
f2,w<rH^7_
/?^^/£»/J2_
/•*ZQ
/<.70
/rz_<=>/OV=,
/70o\\\\\
-V
SAMPLE LOCATOIN
s/
7/
//
/
SAMPLETYPE
U/*-T£3£.L'VA-rttS.
——— 1/
\\
\\\
• \>
TOTAL NUMBER OF CONTAINERS
fel4I/
/
f
s /•
t1
1?-
REMARKS
w r 7 At %WfTA-t.l
V_^
X\\X
X^v
ANTiaPATED CHEMICAL HAZARDS: p)£T4L* SAVwflXS. f^B UMfK.T«S*£O
RELINQUISHED BY: <s- /) /) /J/ [j DATE/TIME RECEIVED BY:mr^6^y/J/%^X „.«, , ^ ——————————•-" (SON) ' 'f 1/-'0» | 6J500 ^ (s»0
RELINQUISHED BY: DATE/HME RECEIVED BY:fjfl ———————— ; ———— ; ———————————————————— 1 Tl ———————————————————————————————•*• (SIGN) I Vsi/ (SWN)
RELINQUISHED BY: DATE/TIME RECEIVED BY:[3] ———————————————— i <T> ——————————————"" (SKSN) i
ADDITIONAL SIGNATURE i—|SHEET REQUIRED «-J
METHOD OF SHIPMENT: SHIPPED BY:
f£D 6X CsOUR]^CONDITION OF SEAL UPON RECEIPT:GENERAL CONDITION OF COOLER:
WHITE - CRA OFFICE COPYYELLOW - RECEIVING LABORATORY COPYPINK - CRA LABORATORY COPYGOLDEN ROD - SHIPPERS
V3' (SCN)
RECEIVED FOR LABORATORY BY: DATE/TIME
;
COOLER OPENED BY: DATE/TIME
N5 29716
f*BA SHIPPED TO (Laboratory name):VHM Consulting Engineers . . . JtCONESTOGA-ROVERS & ASSOCIATES W^PSuJOfcTH / r\L££ T L-AB5651 Colby Drive, Waterloo. Ontario Canada N2V 1C2
CHAIN OF CUSTODYRECORD
PROJECT N»:
2tz~7PROJECT NAME:
SHAW $VESAMPLER'S SIGNATURE f^, -fj^Jf Z /L. C/
SEQ.
///-itf-4?
U-9lUM2VJ-9?(0-^7,j^cj7W-^?;[A/-*}'yj_cj^v "l /
1 0'
v/-^UHt7Vo-cft
t«"T</
/
SAMPLE W».
?77Zi>/-SS-a:?7Z.O^-^-COJ7ft4/-S^-ftC\j M-SS-ooZ.
l?o^-5S-oo?7.O3 -SS-OloI7ft^-V%*oilITd^ -^-Ol'
'J7AS ~ss •o^^I? n^> ~ S3 "0^}7n-z,.^<;-0t
170^-S^-OZl17 OM -5VozT^^-SS'Ot^170 2, -5S -OU
£$T^\6$t\ p \r^\art\fL
1 //
Oni) 6»
DATE
/ 'Z-oV
»A^ il-0«fWKn M-of
I ^9 .• / ^Ll ' ^^J T
J7-04
12-0/5»7-0"*>li-o^iIZ-oH\7-o«,
3 17-o-S\Z-0"%l?-oMl?-o|l^-o-?,
"7 IZ-O4
x/
TIME
IIIOIteol»?>0
0^*4 4^4415?>Oj-a,-a,\X
4>S \rR^rbOI\o4M l«5-lOf?O9SO^fss-5,34
oc\AA
//
SAMPLE LOCATOIN
^
/-/ ;
SAMPLETYPE
lA/a-hrDnitrU/aXeyWaVr
V\tvU>rUlrA<?jT
VOcvV'
-e-r
x
^
//
/ /TOTAL NUMBER OF CONTAINERS
N»O
FCO
NTAIN
ERS
fFs$•
*f5"2,2?5,3|11\1^|z:/
REMARKS
MfUh.fiHA \/A("l3;.flf«4«ia RwA \Jr.<- <;rt<4J2i RMA slrfLo
lA -UiL VlrcH 'Si-e
^/Aip-Wiiii P,/\\^s
yM j> \-v^Ln
!
N/\/ncx r^p,^
T voc/s ^RB^'^
//'
ANTICIPATED CHEMICAL HAZARDS:
REUISIQUISHED BY: . ^ /.(/ , , 7^^ (SKW) F^ /£ t-T 1 /*•
IE- RECQVED; BY:ten ** ————————*& (SIGN)
RELINQUISHED BY: DATE/TIME RECQVED BY:nn . /9\^ (SIGN) | Vs^/ (SWN)
RELINQUISHED BY: DATE/TIME RECQVED BY:nn . /TV^ (SIGN) - i
ADDITIONAL SIGNATURE r— iSHEET REQUIRED L- '
METHOD OF SHIPMENT: SHIPPED BY:
Couitf< ff-0 "EXCONDITION OF SEAL UPON RECEIPT:GENERAL CONDITION OF COOLER:
v^/ (SIGN)
X
RECEIVED FOR LABORATORY BY: DATE/TIME
(3GN
cc<(SIGN
i . ._ ._ .
)LER OPENED BY: DATE/TIME
, - — i ——
•12.^2-T2-
^2-
WHITE - CRA OFFICE COPYYELLOW - RECEIVING LABQRATORY COPYPINK - CRA LABORATORY COPYGOLDEN ROD - SHIPPERS N2 23717
/*BA SHIPPED TO (Laboratory name):WtfM Consulting Engineers / / £ /CONESTOGA-ROVERS & ASSOCIATES (,Vtf0jWO/?7?T /n£-<^£~7~ *-&££651 Colby Drive, Waterloo. Ontario Canada N2V 1C2
CHAIN OF CUSTODYRECORD
PROJECT N»: PROJECT NAME:
/ s\SAMPLER'S SIGNATURF £^<~ 7-Ar L--* I/
SEQ.N°.
*/-?
lr,H7toJ-Tlw)-lztefj-ifw-°r?fcWInHIVJ-17/WW-<tt«HJi
SAMPLE N».7/207-SS-«>17 )1 -SS-00«jIIOft-Ss-005H09^SS-oofc17(72- SS-OtftM7fA-^-OBbW*rto«-SS-ooW\lcn-5S-OC5Yi\Ztf7-tt-ooTl?fT7-SS-03o»7(TJ-SS-o^l?07-Sf>-03Z.7707-5^-0^5~7emf) MA' ///-/—
" (SWH)
DATE
. It-01\1-3~lll-ofl\r-ot
, \1-o9>JL> 12=09*
VZ.-O'Ol7_-oTll-olln)712.-0717-07lZ;cfj«L 1
1/
+-
TIME
/Z5012,M^
OI MIO7.O\020
lr>z.oOSSll^«44>Ii54Is ^sn/"oZ.\
s-4^\\«4(5
//
/
V^/
SAMPLE LOCATOIN
///
———/• ————L ——- . __ .
SAMPLETYPE
IA/^TGT^'
•*f
1iI
/
-/—— /TOTAL NUMBER OF CONTAINERS
N»0f
CONT
AINE
RS
2.»,^•=;3^•3•
1|}\///
/-
?l
REMARKS
I T,,'rtAjhVMtUy^\PT4t«JuV*Ae\t
1^0X4\v\?ui^AJ
s <^4 2_ (Vp«, vWx <j>^ 1i^,^oc\^\^\)ncX Mljy^WXViA^I, ^^^11
U ,vW*<*-VJ|to ,VftAvA|oj . JocXs«A-l
vUpUtotUeV*S
vMe.XrA^v^GV«i^
//
/i —/
ANTiaPATED CHEMICAL HAZARDS:
REUNQUISHED BY: £ ~ / / / J DATE/TIMEm X sjt^+ /H^§f/f - ""- \^/ . _ ^rf-> i r ».
^ <*W — yziT/o I/T/QORECEIVED BY:
/R\
•RELINQUISHED BY: DATE/TIME
rsn^ (SIGN) i
^ (s»oRECEIVED BY:
/!f\
RELINQUISHED BY: DATE/TIMErsi"" (SIGN) i
Vsi/ (SCN)
RECEIVED BY:/T\v^/ (SWN)
ADDITIONAL SIGNATURE i— iSHEET REQUIRED 1— '
METHOD OF SHIPMENT: SHIPPED BY: RECDVED FOR LABORATORY BY:
CONDITION OF SEAL UPON RECEIPT: CO<GENERAL CONDITION OF COOLER: ._._,
(SIGri
DLER OPENED BY:
) ————————————— : ———
DATE/TIME1
DATE/TIME1
WHITE - CRA OFFICE COPYYELLOW - RECEIVING LABORATORY COPYPINK - CRA LABORATORY COPY Mn Arr^J AGOLDEN ROD - SHIPPERS fM" fc9 f 10
CUM.
I I I I I I
APPENDIX B
DATA QUALITY ASSESSMENT AND VALIDATION
M E M O
TO: Ed Roberts REFERENCE NO: 2227
FROM: Deborah Gage W^ DATE: February 12,1993
RE: Data Quality Assessment and Validation for the WaterSamples Collected from the Shaw Avenue Site in Charles City, Iowa
The following details an analytical data quality assessment and validation for thewater samples collected on December 1 through December 8, 1992 from the ShawAvenue Site in Charles City, Iowa. The samples were analyzed for select volatileorganic compounds (VOC), select semi-volatile organic compounds (SVOC)(2-nitroaniline), total arsenic and total manganese by Wads worth/AlertLaboratories, Inc. (WAL) of North Canton, Ohio. The samples are identified inTable 1. The analytical methods used are presented in Table 2. The qualityassurance criteria used to assess the data were established by the methods ofanalyses.^
Holding Time Periods
The holding time periods are presented in Table 3. As indicated by the samplecollection and analyses dates on the chain-of-custody forms and the analyticalreports provided by WAL, all samples were prepared and analyzed within therequired holding time periods.
GC/MS Instrument Performance Check
To ensure adequate mass resolution, identification and, to some degree, sensitivity,the performance of each instrument used for VOC and SVOC analyses was checkedat the beginning of each 12-hour period using bromofluorobenzene anddecafluorotriphenylphosphine, respectively. The results of all GC/MS instrumentperformance checks were within the acceptance criteria, indicating acceptableinstrument performance.
Initial Calibration
Initial calibration data were used to demonstrate that each instrument was capableof generating acceptable qualitative and quantitative data at the beginning of eachanalytical run. Initial calibration criteria for VOC and SVOC analyses required thatthe relative response factor (RRF) for each target analyte and system monitoring
l Application of the quality control criteria was consistent with "Draft National Functional Guidelinesfor Organic Data Review" revised June 1991 and "Laboratory Data Validation Functional Guidelinesfor Evaluating Inorganics Analyses", July 1,1988.
compound be greater than, or equal to, 0.05. The percent relative standarddeviations (%RSD) for all compounds were required to be less than, or equal to,30%. All initial calibrations for VOC and SVOC analyses met the acceptance criteria.
Initial calibration for the arsenic and manganese analyses required the successfulanalysis of the correct number of method specific standards and blanks for eachinstrument. Correlation coefficients for the initial calibration were required to be0.995 or greater. Initial calibration verification results were required to be within 90to 110% of the true value. The arsenic and manganese initial calibrations wereacceptable.
Continuing Calibration
To ensure that each instrument was capable of producing acceptable quantitativeresults over the specified analysis period, routine checks upon the instrumentcalibrations were performed. Continuing calibration criteria for the VOC and SVOCanalyses required that the RRF for each target compound and system monitoringcompound be greater than, or equal to, 0.05. The percent difference (%D) betweenthe initial calibration mean RRF and the continuing calibration RRF was required tobe within±25% for all compounds. Several continuing calibration violationsoccurred for SVOC and VOC analytes, but no qualification was deemed necessarysince the samples were only submitted for select VOC and SVOC analytes for whichthe continuing calibration criteria were met.
Continuing calibration criteria for the arsenic and manganese analyses required thesuccessful analysis of the correct number of instrument blanks and standards asspecified in the method of analyses. Continuing calibration verification results wererequired to be within 90 to 110% of the true value. Due to manganese continuingcalibration blank contamination, the reported value of 5.5 ug/L in sampleW-921208-SS-005 should be qualified as non-detected at a quantitation limit of5.5 |ig/L [(U(5.5)]. The remaining arsenic and manganese continuing calibrationswere acceptable.
Method Blank Samples
Contamination of the samples contributed by laboratory conditions or procedureswas monitored by the concurrent preparation and analysis of method blanksamples. The method blank samples were reported to be free from detectableconcentrations of target analytes, indicating no significant contamination occurred.
System Monitoring Compounds/Surrogate Spikes
Laboratory performance on individual samples for VOC and SVOC analyses wasmonitored by using percent recoveries of system monitoring compounds/surrogatespikes. Due to target analyte interferences, sample W-921204-SS-014 required a 1:50dilution which resulted in dilution of the surrogates beyond detectable levels. All ofthe remaining surrogate spike data were within the acceptance criteria.
3
Matrix Spike/Matrix Spike Duplicate (MS/MSP) Results - Organic Analyses
To assess the long-term accuracy and precision of the analytical methods on samplematrices, MS/MSD percent recoveries and the relative percent differences (RPD) ofthe recoveries were determined. The MS/MSD and RPD data associated withproject analytes were within the acceptance criteria.
Matrix Spike/Laboratory Duplicate (MS/DUP) Results -Arsenic and Manganese Analyses_____________
To assess the long term accuracy and precision of the analytical method on samplematrices, MS percent recoveries and the relative percent difference of laboratoryduplicate results were determined. Table 4 presents outlying MS/DUP results andthe associated samples which should be qualified. The remainder of the data werewithin the acceptance criteria.
Internal Standard Summaries
Overall instrument stability and performance for VOC and SVOC analyses wasmonitored using internal standard peak area and retention time data. Internalstandard peak areas of the samples were required to fall within -50 percent and+100 percent of their respective internal standard areas in the continuing calibrationstandard. The retention time for each internal standard in the samples wererequired to be within +_30 seconds of their respective internal standard retentiontime in the continuing calibration standard. The VOC and SVOC internal standarddata were within the acceptance criteria.
ICP Interference Check Samples (ICS)
To verify that proper interelement and background correction factors have beenestablished, the laboratory must analyze an ICS prior to and after each analyticalsequence run. Manganese met the ICS acceptance criteria of 80-120 percent recoveryof the true value.
Laboratory Control Samples (LCS)
Overall performance of the arsenic and manganese analyses were monitored by LCSanalyses. The control limit recovery criteria were met by both arsenic andmanganese.
ICP Serial Dilution
ICP serial dilution analyses for manganese were used to determine whethersignificant chemical or physical interferences existed due to the sample matrix. Inall samples for manganese, the ICP serial dilution criteria were met.
Post-Digestion Spike Recovery Results
To assess the precision and accuracy of the individual analytical determinations,post-digestion spike recoveries were determined for arsenic. For the followingsamples, positive arsenic results should be qualified as estimated (J) and fornon-detected arsenic results, the quantitation limit should be qualified asestimated (Up due to violation of post-digestion spike recovery limits and/orviolation of the Method of Standard Additions (MSA) criteria: W-921207-SS-035,W-921202-SS-014, W-921202-SS-015, W-921202-SS-018 and W-921203-SS-019. Theremaining samples met the acceptance criteria.
Field Quality Assurance/Quality Control (QA/QC)
The field QA/QC included trip blanks, rinsate blanks and field duplicate sample sets.
To monitor the diffusion of VOC from highly concentrated samples through theseptum seal of the sample vial, two trip blanks were analyzed. No detected analyteswere reported.
To assess the efficiency of field decontamination procedures, two rinsate blanks werecollected and analyzed as authentic samples. No detectable concentrations of targetanalytes were reported, indicating the decontamination procedures were effective.
Overall precision for the sampling events and for the laboratory were monitoredusing field duplicate sample results. Table 5 presents the results of detected analytesfrom the field duplicate sample sets which indicate that the sampling eventachieved an adequate level of precision.
Overall Assessment
Violation of MS/DUP criteria and post-digestion spike criteria should result inqualification of sample data as discussed in the text and outlined in the tables. Theremainder of the data were found to exhibit acceptable levels of accuracy andprecision and may be used without qualification.
DKG/ko/2
Attachments
cc S. Day
I I I I I I
TABLE 1
SAMPLE IDENTIFICATION NUMBERSSHAW AVENUE SITECHARLES CITY, IOWA
W-921204-SS-001 W-921202-SS-018W-921204-SS-001MS W-921203-SS-019W-921204-SS-001MSD W-921203-SS-020W-921204-SS-002 W-921203-SS-021W-921207-SS-002 W-921204-SS-022W-921204-SS-003 W-921201-SS-023W-921207-SS-004 W-921204-SS-024W-921208-SS-005 W-921201-SS-025W-921208-SS-006 W-921201-SS-026W-921208-SS-006MS W-921201-SS-027W-921208-SS-006MSD W-921202-SS-028W-921208-SS-007 W-921202-SS-029W-921207-SS-008 W-921207-SS-030W-921207-SS-009 W-921207-SS-031W-921203-SS-010 W-921207-SS-032W-921203-SS-011 W-921202-SS-033W-921203-SS-012 W-921202-SS-034W-921204-SS-014 W-921207-SS-035W-921202-SS-014 W-921203-SS-036W-921202-SS-015 W-921204-SS-037W-921202-SS-017
TABLE 2
ANALYTICAL METHODSSHAW AVENUE SITECHARLES CITY, IOWA
Parameter Analytical Methods
VOC CLP1 OLM01.0 (or most recent version)
2-Nitroaniline CLP OLM01.0 (or most recent version)
Arsenic, Manganese CLP ILM02.0 (or most recent version)
1 "Contract Laboratory Program Statement of Work for Organic Analysis, Multi-Media,Multi-Concentration" and "Contract Laboratory Program Statement of Work for Inorganic Analysis,Multi-Media, Multi-Concentration", USEPA March 1990.
TABLE 3
SUMMARY OF TECHNICAL HOLDING TIME PERIODSSHAW AVENUE SITECHARLES CITY, IOWA
Parameter Holding Time Period
VOC -14 days from sample collection tocompletion of analysis
2-Nitroaniline -7 days from sample collection to extraction-40 days from extraction to completion ofanalysis
Arsenic, Manganese -6 months from sample collection tocompletion of analysis
TABLE 4
OUTLYING MATRIX SPIKE/LABORATORY DUPLICATE(MS/DUP) RESULTS - INORGANICS
SHAW AVENUE SITECHARLES CITY, IOWA
Parameter
Arsenic
MS%R
74%
%R Limits
75-125%
Qualifier1
J/UJ
AssociatedSamples
W-921207-W-921208-W-921208-W-921208-W-921207-W-921207-W-921203-W-921203-W-921204-W-921204-W-921207-W-921207-W-921207-W-921207-
-SS-004SS-005SS-006SS-007SS-008•SS-009SS-020SS-021SS-022SS-024SS-030SS-031SS-032SS-035
^Samples should be qualified for listed parameters as follows:J - The analyte was positively identified; the associated numerical value is the approximate
concentration of the analyte in the sample.UJ - The analyte was not detected above the reported sample quantitation limit; however, the
reported quantitation limit is approximate and may or may not represent the actual limitof quantitation necessary to accurately and precisely measure the analyte in the sample.
TABLE 5
SUMMARY OF DETECTED ANALYTES OF FIELD DUPLICATE SAMPLESSHAW AVENUE SITECHARLES CITY, IOWA
Investigative Sample Duplicate SampleW-921204-SS-002 W-921204-SS-003
Analyte (ng/L) (ng/L) RPD1
Arsenic 55.5 52.8 5Manganese 18.1 18.0 0
Investigative Sample Duplicate SampleW-921207-SS-008 W-921207-SS-004
Analyte (pg/L) <Hg/L) RPD
1,2-Dichloroethane 3J2 3J 0Arsenic 241J 252J 4Manganese 22.1 19.3 13
iRPD = Relative Percent Difference2j = The analyte was positively identified; the associated numerical value is the approximateconcentration of the analyte in the sample.
