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.

WL053;wkh

#

< »

3 8 01:; 8 0

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

#

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.

•VlJX-il.^t-:

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

http://il.%11.il

http://il.il

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

^.•4 : i -

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-

i l l ! Ii'lfl

.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


Client Project ID: 11653.07 TDL Projea No.: 484405


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


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.:


484405


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


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.


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


QA/QC REPORT


Soil GG4966 (ppb)


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



QA/QC REPORT


Soil GG4966 (ppb)


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


TDL Project No. 484405

QA/QC REPORT


Water GG4975 (ppb)


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

/ ^ / - ^ ^ Z . . ^ - - "

rto)»cl No.;

/ / 6 r 3 •<>-?

Phoo*: 3 g / ~ - > 7 / - V T - T O

Pro)aclNama:/^/t-7c» x c . z :

Sairfil* Storag* Looadon:

Pago

Dwta TImo "5 H Btrleh IO:

Sanf>t« IdenHllcatkin (ID and Matrix) 19 Characters

5 o I

— • • a i l . w . -vû....», jy r . ^ w ^ i u

EA Laboratories 19 Loveton Clrc l* Sparks, MD 21152 (301) 771-4920

RifW(MDa»i«nMH (My

EAI

»kinbar Ram arks

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ti f^'Z.ti

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^ C T J / L S L

f:ir^L.jû£-

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^ ^ _ L Z _ L

^ ^ igi

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-l_&J<tjil_Hl>'liL.L.

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I I i ? £ i l i l t

X-

-XI

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97.'. S

28./S

A : ^ / 3 .

K ^1 '? •fi/K-^LQ/în/gt i / i c t f iff? T^"-

^ • ^ i / i ^

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X

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final report prepared for cold creek swamp stage 3

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