'FINAL REPORT PREPARED FOR COLD CREEK SWAMP STAGE 3 ...
Transcript of 'FINAL REPORT PREPARED FOR COLD CREEK SWAMP STAGE 3 ...
Iniernotionci 3 8 0 2 /' r'') Technology Corporation
FINAL REPORT
PREPARED FOR
COLD CREEK SWAMP STAGE 3
VOLUME I
RESULTS SUMMARY FOR
METHYL MERCURIC CHLORIDE ANALYSIS
484405
PREPARED BY
IT ANALYTICAL SERVICES
TECHNOLOGY DEVELOPMENT LABORATORY
KNOXVILLE, TENNESSEE
OCTOBER 31, 1991 IOTSSSOS
3:4 I-_-e-rtcrsLrxve > i-.L-.cx .nlie i'^—.essee 37o:: . (c • ; ; c-0-321: • .-.•_.: .r';5) 694-9573
3 8 ^ ^ • • • " ^ • ' K.I
TABLE OF CONTENTS
PassJ REPORT
1.
II.
III.
Introduction/Case Narrative
Analytical Results/Methodology
Quality Control
APPENDJCES
A
B
C
D
E
F
G
Cross Reference List
Initial Calibration Summary
Continuing Calibration Summary
Results Summary
Results Summary of Soil Moisture Content
QA/QC Summary
Chain-of-Custody
1
2-4
4
3 8 0 2 ' ' M
INTEJJNATIONAL ANALYTICAL T E C H N O L O G Y (aifcANlATbiilA Jk .L^k^fThifaj
CORPORATION SERVICES
CERTinCATE OF ANALYSIS
Gregory E. Johnson Oct. 31,1991 E.A Engineering, Science and Technology, Inc. 15 Loveton Circle Sparks, MD21152
TDL PROJECT NUMBER: 454405 Client PO No.: 024LB
This is the Certif icate of Analysis for the fol lowing samples:
Client Project ID: 11653.07 (COLD CREEK SWAMP STAGE 3) Date Received by Lab: October 10, 1991 Number of Samples: Twenty Four (24) + MS&MSD Sample Type: Two (2) Water and Twenty two (22) Sediment/Soils
I. Introduction/Case Narrative
This is the third phase of the Cold Creek Swamp project. The Technology Development Laboratory (TDL) is to analyze sediment/soil and water samples for mono methyl mercuric chloride (MMHGCL). The method to be used was identified earlier using two real samples from the site. The steps for the method are slightly modified from the AOAO Official Methods of Analysis (1984), Mercury (Methyl) in Fish and Shellfish Gas chromatographic Method (25.146-25.152). The modified steps are detailec in the Methodology section. Also a Cross Reference list of the sample numbers is given in .^poendix A.
Reviewed and Approved:
^ , ^ ^ Duane K. Root Analvtical Operations Manaqer WL053/wkh .-~.i-zzr. Zf^-z- :; :.-.c;eper.cen; Li=borc:lcr.9£
Inierr.~:cr:.:: .-S30c:z::cn of h.Tmon.'T-.e.'~.ia] Testing Lc±:c:~.c:ie£ .-jT.er.z::- .-.Bscc-.c.'.or. :o: Ldbcroiory .-ircreclilcriic.-
n A n a l y t i c a l S e m e SS • .304 Di iocon; .7-Te. KnoxriUe. TN 37923 • (615) 69C- i ; i ;
• 7
• 8 0 2 7 7
Page 2 of 4 IT A N A L Y T I C A L SERVICES Gregory E. Johnson 304 DIRECTORS DRIVE E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. V M O V r r n T r T^T Date: October 31, 1991 K N O X V I L L E , T N Client Project ID; 11653.07 TDL Project No.: 484405
l i . Analytical Results/Methodoloav
The samples were shipped overnight to the TDL and upon receipt, were refrigerated. The samples were analyzed in batches with the required QA/QC samples. There were a total of 22 soil/sediment samples and 2 water samples.
A 4 gram aliquot of the soil was weighed into a 40 ml VOA glass vial fitted with a Teflon lined septum cap. The samples were first prewashed with 30 mis of acetone, hand shaken for 15 seconds, centrifuged at 2000 RPM for 5 minutes. The acetone was decanted off and discarded. This washing step was repeated twice more, each time discarding the acetone. The sample was then washed with 30 mis of benzene, shaken, and centrifuged. The benzene was then decanted off and discarded. The sample was then treated with 4 mis of a 1:1 (v:v) hydrochloric acid/ deionized water solution. The sample was mixed well with the solution and then 5 mis of benzene was added. The sample was hand shaken for 2 minutes and centrifuged as before. The top benzene layer was pipetted off into a separate vial. The sample was extracted twice more with 5 mis of benzene each time and the benzene was pipetted off and combined with the first extract along with sodium sulfate. Certain samples gave a sizable emulsion between the benzene/acid phases. This was broken up by using a glass stirring rod and then centrifuging at higher RPMs and for longer times.
The water samples were extracted by placing 10 mis of the water into a VOA vial and adding 1 ml of the 1:1 HCI/DI water and mixing. Then 3 mis of benzene was added and the vial shaken by hand for 2 minutes. Afterphase separation, the benzene layer was drawn off and another 3 mis of benzene added. The vial was again shaken and the benzene phase was combined with the first extract for a total final volume of approximately 6 mis. The extract was then dried over sodium sulfate.
Each sample's final volume was measured and recorded. The extracts were run at their respective final volumes of benzene without further concentration.
The analysis was performed on an Hewlett Packard 5890 gas chromatograph (GC) equipped with an electron capture detector. A Restek 30 meter Rtx-5 megabore column was used to obtain the chromatography. The column was conditioned daily with 20 microliters of a 1000 pom mercuric chloride solution in benzene a few hours before starting the sample analysis. The cata was collected and processed with the PE/Nelson Turbochrome 3.2 software.
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Pass 3 o' 4 IT A N A L Y T I C A L SERVICES Gregory E. Johnson ^ n ^ n r R r c r o p " ; nDTvr" E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. ^ T ^ V ^ T i inT, Date: October 31, 1991 K N O X V I L L E , T N Client Project ID: 11653.07 TDL Project No.: 484405
II. Analytical Results/Methodoloav (continued)
For this project, a reliable lower instrumental quantitation limit was in the 2.5 to 5 ppb range. Below this, the response was not very linear and was more dependent on the passivity cf the chromatography system after running several dirty samples, in other words, the samples with the lower amounts of methyl mercuric chloride were more visibly affected by showing lower response and much degraded peak shape.
Standards were prepared by weighing methyl mercuric chloride into a volumetric flask and making serial dilutions in benzene to make several concentration levels. An initial standard calibration curve was generated and shown in Appendix B.
For the continuing calibration, a standard was run at the beginning of the shift and had to meet within 25% of the initial calibration. Since longevity of the column conditioning was heavily dependent on the amount of interferences in the samples that were run, several standards were interspersed with the samples. These standards provided a good indicator when the conditioning was wearing out. The standard runs for each day are included in the continuing calibration data shown in Appendix C. From the group of standards for that day, a retention time window was established. Also, the average of the earliest and latest retention time for the standards of that day was used to calculate the percent change of retention time for the samples which had peaks in the methyl mercuric chloride retention time window.
The results for the analysis are shown in Appendix D. These values are reported by external standard quantification as methyl mercuric chloride and units of parts per billion (ppb). Also, these results are not corrected for recovery and the soils are reported on a wet weight basis. The moisture content of the soils is reported in Appendix E. There were no problems with tailing and peak splitting for this phase which were experienced in phase 2. The conditioning step appearec 'c provide good and reproducible chromatograms throughout the phase 3 analysis.
WtOSS/wkh
•7 8 0 2 81
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Page 4 of 4 IT A N A L Y T I C A L SERVICES Gregory t . Johnson 304 ^ypp__,- . .p_ -.pi-wT E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. V T 7 / ^ 7 T T T ^ V ^ ^ T Date: Octobar 31. 1991 KWOXVTLLE, T N Client Project ID: 11653.07 TCL Proiect No.: 484405
II. Analytical Results/Methodoloav (continued)
From the recovery data, it probably makes sense to categorize the soils by their physical appearance (dark or light and sandy or organic types). This will help to give an indication of whether the reported numbers are actually higher or lower. For future work, it may be worthwhile to investigate the possibility of eliminating the pre-extraction acetone and benzene washing steps and first acidify and extract the sample, then run the extract through a solid phase extraction tube of some type to remove the interferences. This will not only insure that the variability of the binding strength of the MMHGCL to the soil matrix will be eliminated, but the cleanup step may more efficiently remove the interferences which will lower the detection limits and increase the lifetime of the conditioned GC system. Also, the final volume of the cleaner extract can be reduced to help lower the detection limits.
III. Quality Control
Matrix spiked samples and matrix spiked duplicate samples were mn with the samples along with a system/solvent blank for each batch. Sample tracking sheets are in Appendix G.
For the soils, we deliberately chose different looking soils to spike from each batch to check the variability of the recoveries with the different types. The recoveries ranged from 59-105%. The water sample spike recovery ranged from 75-80%. Results are shown in Appendix F.
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3 8 0 2 8.>
APPENDIX A
CROSS REFERENCE
3 8 0 2 8.-
r-1 EZ " T HH O O F< F^ R; E I R- CD R: "T + i -. .f . i . . • . : ' - . l I - i v v l .*. .* i- >• * . * • * * * ••.•JT.»: if 4; ** ; . * :** * * ' - ' e r = i c r , 3 . i * * . * * * « » . * * * * . * * * * • » * » . ? » L ::• : _' = : •.. f. >: %. t * '
f.ETHOD FILE = L;MTOO-.Ci TA'aOCRJ.PT.SftP ' : • £ ; 12/4/1990 12;:.1;:.3
Tl ie Edited: 10/15/1991 10:5s:4;.
No. of Tiies Edited: 20
t i •i.ttti -If. l i % t i l . il.%11.il. •)(. if. i l.i l. II. t t t ! ) . % ) ( . % i . •)!.%%-if ^.-^ rii,.),. * *' * "» *: * •: * * * * ; • : . • * * . * * : *• * *. *. i * .*: • i » i. *. • • .• * .•. f * *• • j . J. ; .
Siiole Descncticn ;
Default in ject ion Voluie = 1 ul
Ar External Standard Calibration i<i l l Be Used
Jritnown Peaks K i l l Use The Resoonse Factor Of The Nearest Coiconent
3.35" i i n Search Hindow: 0 sec, 3
(Use LaroBst Peak!
Ccsscr.ent I.Ttoriation ; ri M u . , r : 111 i n . , u .
P.etenticn Tise
i^eference Cosoonent
•Srcj: >ia»e
Calibratinq Area VersLS nsount Usinq A Point Tc Point Fit Cu."/e Will Se Forced Through The Origin AsoLr.ts Uili Not 5e Scaled Prior To Regression iieig.iting Factor For The Regression: Ncrial (No Weighting) Calibration Levels ; Level Aaount Area Heioht ISTD ResD. ISTD Ait. IReolicates RF (ReSD/A»ti
1 n
o
4 5
0.9990
2.5000
4.9900
9.9900
25,0000
9213.00
2i270.50
50693.00
107704.00
284379.00
2193,78 5659.29
10906.66
23719.66
58871.05
V : 1 Oi t ( Oiv t ( 0;);-*-2 •• i Oix*
Correlation Coefficient = 0
MEAN RF (Reso/Ait)
Rel. standard Deviation
4
1 i 1 1
t)
9.2272E+03 1.0508E+04
1.0159E+04 1.0731E'-04
1.1375Eni4
= 1.0410E^0A
m
3 8 028.'^
'ie-e-ticn rieic.it AiOunt iSTD ^e::cr.;e J5TD A«9ur; Dat?.T;je
25.00^0 10/13;'?: 06:OP Pd
8 If z o ;.•)
: ^ L F L :
j a "t £• : 1 ' " ' ) .
: - = F o r • • 5 rn D L e
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J a t a L i s t s W i t h Ca 1 cu. 1,?. t e d V a l u e s C u r v e # 1 : F ' o i n t t.r. r c o . n t F i t
W e i a h t i n a F a c t - r r =
i r E a c h F i t : F o r c e d T h r c L i a h t h e O r i g i n i .'0 I N c W e 1 a i- t : . n a .'
Level
Naie
t
-7
i c.
Observed
K-Value
0.9P'000
2.500000
4,9P0000
5.;soooo 25.000000
Calculated
J-Value
0.999000
2,500000
4.P'OOOO
9.990000
25.000000
Delta
0.000000
0,000000
0.000000
0.OOOuOO
0.000000
•iDiff.
0,000
0.000
0.000
0,000
0.000
Observeo
y-Value
9213.000000
262'^0.500000
50693.000000
107704.000000
234379.000000
Calculateo
t-value
9213.000000
26270.500000
50693.000000
107704.000000
294379.000000
Delta
0,000000
0.000000
0.000000
0.000000
0.000000
. f f.
0. OOi;
0,000
O.yOO
0.000
0.000
'-} 0 f ; ' " . " - •••-l l ti. o ' •)
•_ Ll r V e F' a x- a ITI s- ~ 5 ^ =. :
Curve 11 : Point to Point Fit - Forceo Through the Origin
tieiahtinc Factor = 1.0 (No i ieiohtino'
/
' •{ f ; L.
twiiwini'v ,1 ^
' • •^ 'nYi
11
'^rnj-
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.Amount
3 8 0287
APPENDIX C
CONTINUING CALIBRATION SUMMARY
3 8 f l •••. ( ' >".
11 / . O ''.)
APPENDIX C Page 1 of 4 Gregory E. Johnson E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. Date: October 31, 1991 Client Project ID: 11653.07
,.,uiMnimMMMMmi\i,m
IT ANALYTICAL SERVICES 304 DIRECTORS DRIVE KNOXVILLE, TN
TDL Project No.: 484405
E. A. Engineering Daily Standard Summary Report
October 17, 1991
Sample Name
1013:003 MMHg STD IV 1013:003 Mfi Hg STD IV 1013:003 MMHg STD IV
Date Of Injection
10/17/91 10/17/91 10/17/91
Time Of Injection
04:11 PM 05:49 PM 07:05 PM
Ret Time
3.89 3.91 3.98
Delta % Ret Time
-1.1920 -0.8653 0.8833
Cone. of MMHgCI
(ppb)
10.6 10.6 9.9
Actual Cone. (ppb)
10 10 10
%D
6 6 -1
*li)53/wkh
3 8 0 2 8 7
APPENDIX C -Page 2 of 4 Gregory E. Johnson E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. Date: October 31, 1991
IT ANALYTICAL SERVICES 304 DIRECTORS DRIVE KNOXVILLE, TN
Client Project ID: 11653.07 TDL Projea No.: 484405
E. A. Engineering Daily Standard Summary Report
October 18, 1991
Sample Name
1013:003 MMHg STDIV 1013:003 MMHg STDIV 1013:003 MMHg STDIV
Date a Injection
10/18/91 10/18/91 10/18/91
Time Of Injection
10:01 AM 12:37 PM 02:09 PM
Ret Time
3.94 3.92 3.97
Delta % Ret Time
-0.4949 -1.0192 0.3359
Cone. of MMHgCI
(ppb)
10.8 9.8 9.9
Actual Cone. (ppb)
10 10 10
%D
8 -2 -1
3 8 0 2^ 'n
Page3o?4 - IT ANALYTICAL SERVICES Gregory E. Johnson 304 DIRECTORS DRIVE E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. K N O X V I L L E , T N Date: Oaober 31, 1991 Client Project ID: 11653.07 TDL Projea No.: 484405
E. A. Engineering Daily Standard Summary Report
October 19, 1991
Sample Name Date Of Time Of Ret Delta % Cone. Actual %D Injection Injection Time Ret Time of MMHgCI Cone.
(ppb) (ppb)
1013:003 MMHg STD IV 10/19/91 05:22 PM 3.89 -0.4068 10.9 10 9 1013:003 MMHg STD IV 10/19/91 07:26 PM 3.93 0.5704 11.2 10 12
WL053/wkh
3 8 0291
APPENDIX C Page 4 of 4 Gregory E. Johnson E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. Date: October 31, 1991 Client Project ID: 11653.07 TDL Project No.:
IT ANALYTICAL SERVICES 304 DIRECTORS DRIVE KNOXVILLE, TN
484405
E. A. Engineering Daily Standard Summary Report
October 21, 1991
Sample Name Date a Injection
Time Of Injection
Ret Tme
Delta % Ret Tme
Cone. of MMHgCI
(ppb)
Actual Cone. (ppb)
%D
1013:003 MMHg STD IV 10/21/91 01:03 PM 3.87 -0.2813 ~ 10.3 10 3 1013:003 MMHg STD IV 10/21/91 02:42 PM 3.88 0.0161 11.2 10 12 1013:003 MMHg STD IV 10/21/91 03:20 PM 3.89 0.1964 11.0 10 10
O I ' c. -' ,
APPENDIX D
RESULTS SUMMARY
APPENDIX D Page 1 of 1 Gregory E. Johnson E. A. ENGINEERING, Date: October 31. 1991 Client Project ID:
SCIENCE AND TECHNOLOGY, INC
11653.07
Sample Name Cross Reference
GG4953 GG4954 GG4955 GG4956 GG4956MS GG4956MSD GG4957 GG4958 GG4959 GG4960 GG4961 GG4962 GG4963 BLK3180 GG4964 GG4965 GG4966 GG4956MS GG4966MSD GG4967 GG4968 GG4969 GG4970 GG4971 GG4972 GG4973 GG4974 BLK3181 GG4975 GG4975MS GG4975MSD GG4976 BLK3182
Number
BB13 BB17 BB16 BB12 BB12MS BB12MSD BB11 BB7 BBS BB10 BB9 BB Duplicate 1 BB14
BB15 BB51 BB54 BB54MS BB54MSD BB3 BB4 BB1 BB2 BB Duplicate 2 BBS BB18 BBS
BB Rinsate 1
BB Rinsate 2
Summary
Date Of Injection
10/18/91 10/17/91 10/17/91 10/18/91 10/18/91 10/18/91 10/18/91 10/17/91 10/17/91 10/17/91 10/17/91 10/17/91 10/17/91 10/17/91 10/21/91 10/21/91 10/18/91 10/18/91 10/18/91 10/21/91 -10/19/91 10/19/91 10/18/91 10/18/91 10/18/91 10/19/91 10/19/91 10/17/91 10/18/91 10/18/91 10/18/91 10/17/91 10/17/91
3 8 02 9,<
IT ANALYTICAL SERVICES 304 DIRECTORS DRIVE KNGXVTT.T.E. TN
TDL Project No.: 484405
Report
Time Of Injection
01:40 PM 06:36 PM 04:32 PM 11:18AM 11:28 AM 11:37 AM 01:50 PM 04:42 PM 04:51 PM 05:01 PM 05:10 PM 05:20 PM 05:30 PM 05:58 PM 02:14 PM 01:16 PM 10:50 AM 10:59 AM 11:09 AM 01:26 PM 06:19 PM 06:39 PM 01:12 PM 01:21 PM 01:31 PM 06:00 PM 05:41 PM 06:08 PM 10:21 AM 10:31 AM 10:40 AM 06:27 PM 06:17 PM
Ret Time
3.96 3.84 3.89 3.92 3.92 3.92 3.95 3.98 3.90 3.89 3.90 3.99 3.92 3.83 3.89 3.93, 3.97 3.92 3.92 3.88 3.91 3.91 3.92 3.96 3.93 3-90 3.= i 3.83 3.93 3.93 3.93
4.02
Delta % Ret Time
0.0329 -2.6350 -1.2068 -0.9492 -0.8712 -0.9650 -0.2206 1.1263
-1.1260 -1.2118 -1.1203 1.1408
-0.5673 -2.9108 0.3627 1.2719 0.0000
-0.8899 -0.9553 0.1004 0.1C54
-0.0716 0.8052 0.2125
-0.5549 -0.2"23 -0.C250 -2.7818 -0.7007 -0.6996 -0.7413
1.9761
MMHgCI (ppb)
23. <10 <10
36.* 62.* 57.*
<10 <10 <10 <10 <10 <10 <10 <10
83.* <10 <10
22. 27. 12. 24. 46.*
<10 <10 <10
2"'. I ' i .
<10 <3
4.8 4.5
<3 <3
* Interference present. Quantitated value represents the maximum amount of msthyl -sxur ic chloride present.
*X053/*k.h
3 8 029 1
APPENDIX E
RESULTS SUMMARY OF SOIL MOISTURE CONTENT
3 8 0291.
APPENDIX E Page 1 of 1 Gregory E. Johnson E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. Date: October 31,1991 Client Project ID: 11653.07 TDL Projea No.
IT ANALYTICAL SERVICES 304 DIRECTORS DRIVE KNOXVILLE, TN
484405
PERCENT MOISTURE ANALYSIS
TDL SAMPLE NO. CLIENT SAMPLE NO. % MOISTURE
GG4953 GG4954 GG4955 GG4956 GG4957 GG4958 GG4959 GG4960 GG4961 GG4962 GG4963 GG4963D GG4964 GG4965 GG4966 GG4366D GG4967 GG4968 GG4969 GG4959D GG4970 GG4971 GG4972 GG4973 GG4974
BB13 BB17 BB16 BB12 BB11 BB7 BB8 BB10 BB9 BB Duplicate 1 BB14 BB14 BB15 BB51 BB54 BB54 BB3 BB4 BB1 BB1 BB2 BB Duplicate 2 BB5 BB18 BB6
72.9 19.8 20.2 60.5 36.9 1.4
43.7 17.0 7.3 2.1
36.8 35.7 20.8 34.4 22.9 22.9 25.6 78
59.4 60.2 7.0 36.0 25.2 23.6 86.0
VXC53.'*kh
APPENDIX F
QA/QC SUMMARY
3 8 0 2 9h
APPENDIX F Page 1 of 3 Gregory E. Johnson E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. Date: October 31, 1991 Client Project ID: 11653.07 TDL Project No.:
3 8 0 2 9;/ IT ANALYTICAL SERVICES 304 DIRECTORS DRIVE KNOXVILLE, TN
484405
Matrix: Sample Number: Units:
Soil GG4956 (ppb)
QA/QC REPORT
Precision of Duplicates Spike Value (b) = Spike Dup. Value (a) =
Precision (RPD)* =
Accuracy of Spike Original Value (a) = Observed Spike Value (b) = Spike Level (c) =
Accuracy =
Accuracy of Spike Dup. Original Value (a) = Observed Spike Dup. Value (b) = Spike Level (c Dup.) =
Accuracy =
61.7 57.4
35.5 61.7 25.00
35.5 57.4 25.00
la-bl. fa+t?)
2
b-a c
c
X 100%
X 100%
X 100%
7.2%
105%
88%
•RPD - Relative Percent Difference
WTJHJ/wkh
APPENDIX F Page 2 of 3 Gregory E. Johnson -E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. Date: October 31, 1991 Client Project ID: 11653.07
3 8 f l '':• Q '•;>
IT ANALYTICAL SERVIC; 304 DIRECTORS DRIVE KNOXVILLE, TN
TDL Project No.: 484405
QA/QC REPORT
Matrix: Sample Number: Units:
Soil GG4966 (ppb)
Precision of Duplicates Spike Value (b) = Spike Dup. Value (a) =
Precision (RPD)* =
Accuracy of Spike Original Value (a) = Observed Spike Value (b) Spike Level (c) =
Accuracy =
22.2 27.2
2 x 100% = 20%
ND 22.2 37.50
ihs X 100% = 59%
Accuracy of Spike Dup. Original Value (a) = Observed Spike Dup. Value (b) = Spike Level (c Dup.) =
Accuracy =
ND 27.2 37.5
C X 100% = 73%
•RPD «= Relative Percent Difference
WLCfi/uui
3 8 0299
APPENDIX F Page 2 of 3 Gregory E. Johnson E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. Date: October 31, 1991 Client Project ID: 11653.07
IT ANALYTICAL SERVICES 304 DIRECTORS DRIVE KNOXVILLE, TN
TDL Project No.: 484405
QA/QC REPORT
Matrix: Sample Number: Units:
Soil GG4966 (ppb)
Precision of Duplicates Spike Value (b) = Spike Dup. Value (a) =
Precision (RPD)* =
Accuracy of Spike Original Value (a) = Observed Spike Value (b) = Spike Level (c) =
Accuracy =
22.2 27.2
ND 22.2 37.50
la-bi. (a+bl
2
b-a c
x100% =
X 100% =
20%
59%
Accuracy of Spike Dup. Origina' Value (a) = ND Observed Spike Dup. Value (b) = 27.2 Spike Level (c Dup.) = 37.5
Accuracy = kia c
X 100% = 73%
•RPD » Relative Percent Difference
VL05:v>
3 r. O 0 30
APPENDIX F Page 3 of 3 Gregory E. Johnson E. A. ENGINEERING, SCIENCE AND TECHNOLOGY, INC. Date: Oaober 31,1991 Client Project ID: 11653.07
IT ANALYTICAL SERVICES 304 DIRECTORS DRIVE KNOXVILLE, TN
TDL Project No. 484405
QA/QC REPORT
Matrix: Sample Number: Units:
Water GG4975 (ppb)
Precision of Duplicates Spike Value (b) = Spike Dup. Value (a) =
Precision (RPD)* =
Accuracy of Spike Original Value (a) = Observed Spike Value (b) Spike Level (c) =
Accuracy =
Accuracy of Spike Dup. Original Value (a) = Observed Spike Dup. Value (b) Spike Level (c Dup.) =
Accuracy =
4.77 4.47
ND 4.77 6.00
ND 4.47 6.00
la-tJl. (atbl
2
t?-a c
t?-a c
x100% =
X 100% =
x l 0 0 % =
6.5%
80%
75%
•RPD - Relative Percent Difference
Vl'LOSJ/wLh
3 8 030
APPENDIX G
CHAIN-OF-CUSTODY
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rto)»cl No.;
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Sanf>t« IdenHllcatkin (ID and Matrix) 19 Characters
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EA Laboratories 19 Loveton Clrc l* Sparks, MD 21152 (301) 771-4920
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