IT Corporation6330 East 75th 5</v,- / , Suite 176Indianapolis, lt\ 46250-2781Tel 317.595.640Htax. 317.595.6420

"t'A Member of The IT Gnwp

February 15,1999

Mr. Warner Myron WatersIndiana Department of Environmental ManagementOffice of Environmental ResponseSuperfund Section100 North Senate AvenueP.O. Box 6015Indianapolis, IN 46206-6015

Subject: 4th Quarter 1998 Final Residential Analytical ResultsConrail Elkhart Rail Yard Site, Elkhart, Indiana

Dear Mr. Waters:

Attached please find the final analytical results and Data Evaluation/Validation Report for the Q4 1998residential sampling event conducted on December 21 and 22,1998. Please note that the samplescollected at and were collected from outside garden spigots which are notplumbed through the point-of-entry carbon filtration systems present at these homes. The results of thesesamples reflect untreated groundwater quality. The residents at these two locations were not available toprovide interior access to collect post-filter water samples.

If you have any questions concerning this information, please do not hesitate to contact me at (317) 595-6400 ext. 227.

Sincerely,IT Corporation

Frank D. WestProject Manager

Attachment

cc: T.P. Pendergast - Conrail

IT Corporation6330 East 75th Su-irr, Suite 176Indianapolis, IN 462~>0-2781Tel. 317.595.640CFax. 317.595.6420

A Membi-r of The IT l^rnu

CONRAIL RAIL YARD, ELKHART, INDIANADATA EVALUATION/VAUDATION REPORT

RESIDENTIAL SAMPLING Q4 1998

February 15,1999

Prepared For:

Consolidated Rail Corporation2001 Market Street 6A

Philadelphia, PA 19101-1403

Prepared By:

IT Corporation6330 E. 75th Street, Suite 176

Indianapolis, IN 46250

IT CorporationA Member „{ The IT Cn,,i.

Data Evaluation/Validation Report, Residential Sampling Q41998 iiConrail Rail Yard - Elkhart, Indiana__________________________________________February 15,1999

CONTENTS

1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 METHOD OF EVALUATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3.0 EVALUATION RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.1 F.PA Method 524.2 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3.1.1 Field QC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.1.1 1 Field Duplicates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.1.1.2 Trip Blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3.1.2 Laboratory QC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1.2.1 Sample Preservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1.22 Holding Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1.2.3 GC/MS Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1.2.4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1.25 Method Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1.2.6 Surrogate Compound Recoveries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33.1.2.7 Matrix Spike/Matrix Spike Duplicate Results . . . . . . . . . . . . . . . . . . . . . . . 33.1.2.8 Internal Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33.1.2.9 Laboratory Check Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.2 EPA Method 504 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33.2.1 Field QC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.2.1.1 Field Duplicates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33.2.1.2 Trip Blank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.2.2 Laboratory QC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33.2.2.1 Sample Preservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33.2.2.2 Holding Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43.2.2.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43.2.2.4 Method Blanks ............................................... 43.2.2.5 Surrogate Compound Recoveries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43.2.2.6 Matrix Spike/Matrix Spike Duplicate Recoveries . . . . . . . . . . . . . . . . . . . . 43 2.2.7 Laboratory Check Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4.0 QUALIFICATION OF DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

TABLES

1. Q4 1998 Validated Residential Analytical Results EPA Method 524.22. Q4 1998 Validated Residential Analytical Results EPA Method 504

A. \Q498\RESVAL.WFQ

IT CorporationA Member of The IT (-rom

Data Evaluation/Validation Report, Residential Sampling Q4 1998 1Conrail Rail Yard - Elknart. Indiana__________________________________________February 15.1999

1.0 INTRODUCTION

Between December 21 and 22, Y998,TT Corporation personnel obtained residential well water samplesfrom selected homes and businesses. A total of 11 residential and business wells were sampled during thisevent. These samples were analyzed by Quanterra Environmental Services for volatile organic compoundsusing EPA methods 524.2 and 504. All samples were analyzed by the Quanterra laboratory located inPittsburgh, Pennsylvania. Final laboratory analytical results and data qualifiers are summarized in Tables 1and 2. Final laboratory data and the results of the analysis of the associated field QC samples wereevaluated and reviewed for conformance with the method specific QA/QC requirements and conformanceto the overall QA objectives of the project. This report details the results of this evaluation.

2.0 METHOD OF EVALUATION

The final residential analytical results were evaluated using the method requirements as stated in theindividual analytical methods and the USEPA document "Functional Guidelines For Evaluating OrganicsAnalyses". The evaluation procedure considers the following:

• Field QC sample results, including analytical results from trip blanks, field duplicates, field spikes,and equipment blanks, and;

• Laboratory QC results, including calibration, blank results, surrogate compound and matrix spikerecoveries, internal standard performance, GC/MS system tuning, holding times, detection limits,and compound identification.

Evaluation results are presented for each analytical method used, and the results are divided into Field andLaboratory QC results.

3.0 EVALUATION RESULTS

3.1 EPA Method 524.2 Results

A total of 11 wells were sampled and analyzed. Field QC samples consisted of 1 trip blank and 2 fieldduplicates. No field spikes or equipment blanks were obtained or analyzed. Analytical results arepresented in Table 1.

3.1.1 Field QC

3.1.1.1 Field Duplicates Duplicate groundwater samples were collected from and and analyzed by EPA method 524.5. Duplicate results are summarized with original

A:\O498\RESVAL. WPO

IT CorporationA Member ,i!The IT Gn,u:.

Data Evaluation/Validation Report, Residential Sampling Q41998 2Conrail Rail Yard - Elkhart, Indiana___________________________________________February 15,1999

sample results in Table 1. Results indicate that both duplicate analyses met established criteria indicatingthat precision is acceptable between original and duplicate samples.

3.1.1.2 Trip Blank Methylene chloride (2.6 g/l) was detected in the trip blank analyzed on December 29,1998. Estimated concentrations of methylene chloride below the method detection limit were reported in 9of the 13 associated samples. The estimated concentrations have been changed to indicate thatmethylene chloride was not present in the samples above the method detection limit. Methylene chloridewas detected in 3 of the 13 samples at concentrations above the detection limits but at a concentration lessthan 10 times the blank concentration. In these cases, the methylene chloride concentration has beenchanged to non-detect, and the detection limit has been raised to the reported concentration.

Bromomethane was detected in the trip blank at an estimated concentration (0.27 g/1) below the detectionlimit. Bromomethane is not a common contaminant, and therefore sample concentrations less than 5times the blank contamination require qualification. No samples contained bromomethane atconcentrations less than 5 times the blank concentration. The only sample containing bromomethane was56675 Spring at a concentration of 2.5 ^g/l.

3.1.2 Laboratory QC

3.1.2.1 Sample Preservation All samples were preserved with hydrochloric acid. All samples werereceived 'by "the 'la'oora'iory parta'liyfrozen. Tnree tf Irfe-SHmiJrevwCTfe •retahwtrwttri tffft> if. *trfe*iwti *A -n\,vials broken. Neither the analytical method nor the "Functional Guidelines" specify how to evaluatesamples preserved at temperatures below 2 to 4°C. The sample results are considered acceptable, basedon professional judgement.

3.1.2.2 Holding Times All samples were analyzed within the required 14-day holding time for preservedsamples.

3.1.2.3 GC/MS Tuning Tuning results met all established limits for system performance.

3.1.2.4 Calibration The relative response factors for bromoform and 1,2-dibromo-3-chloropropane wereless than 0.05 in the December 22,1998 initial calibration and the associated continuing calibration onDecember 29,1998. These compounds were not detected in the affected samples, and none of the datarequired qualification. The percent relative standard deviations (%RSD) met established criteria for alltarget analyte compounds in the initial calibration. The percent differences (%D) met established criteria forall target analyte compounds in the continuing calibrations.

3.1.2.5 Method Blanks No target compounds were reported in any of the method blanks for this samplegroup.

A:\0498\RESVALWPO

IT CorporationA Member of The IT Grout-

Data Evaluation/Validation Report, Residential Sampling Q41998 3Conrail Rail Yard - Elkhart, Indiana____________________________________________February 15,1999

3.1.2.6 Surrogate Compound Recoveries All surrogate compound recoveries were within establishedmethod control limits in all samples, blanks, and quality control samples.

3.1.2.7 Matrix Spike/Matrix Spike Duplicate Results The sample obtained at was used forthe matrix spike/matrix spike duplicate sample for this delivery group. Nine compounds (bromomethane,chloroethane, 2,2-dichloropropane, trichlorofluoromethane, 1,1,1-trichloroethane, 1,1-dichloropropane,carbon tetrachloride, trichoroethene, and hexachlorobutadiene) exhibited high recoveries ranging up to 28%above the upper established control limit. All other recoveries were within established control limits. Therelative percent difference (RPD) met established criteria for all target compounds. The residential sampleresults have not been qualified based on criteria exceedance in the associated matrix spike/matrix spikeduplicate results.

3.1.2.8 Internal Standards Internal standard performance was within specified limits for all standards,blanks, and samples.

3.1.2.9 Laboratory Check Samples Two laboratory check samples (LCS) and one LCS duplicate wereanalyzed for this sample group. All compound recoveries were within established control limits Th«relative percent difference (RPD) met established criteria for all target compounds

3.2 ERA Method 504 Results

A total of 11 wells were sampled and analyzed. Field QC samples consisted of 1 trip blank and 2 fieldduplicates. No field spikes or equipment blanks were obtained or analyzed. Analytical results arepresented in Table 2.

3.2.1 Field QC

3.2.1.1 Field Duplicates Target analyte compounds were not detected in the groundwater samplescollected from and and their respective duplicates (DUP#1 andDUP#2).

3.2.1.2 Trip Blank Only one trip blank sample vial was submitted to the laboratory with the samples. Thetrip blank was used during sample analysis by EPA method 524.2 and could not be used again duringanalysis by EPA method 504. All EDB/DBCP sample results were below detection limits. The sampledelivery group does not appear to have been cross contaminated during shipment.

3.2.2 Laboratory QC

3.2.2.1 Sample Preservation All samples were preserved with hydrochloric acid. All samples werereceived by the laboratory partially frozen. Three of the samples were received with one of the two 40 ml

A:\Q498WESVALWPC

IT CorporationA Member of The IT Gnnif.

Data Evaluation/Validation Report, Residential Sampling Q41998 4Conrail Rail Yard - Elkhart, Indiana__________________________________________February 15,1999

vials broken. Neither the analytical method nor the "Functional Guidelines" specify how to evaluatesamples preserved at temperatures below 2 to 4°C. The sample results are considered acceptable, basedon professional judgement.

3.2.2.2 Holding Times All samples were extracted and analyzed within the required 28-day holding time.

3.2.2.3 Calibration Initial calibration and continuing calibration data met the established criteria.

3.2.2.4 Method Blanks No target compounds were reported in any of the method blanks for this samplegroup.

3.2.2.5 Surrogate Compound Recoveries Surrogate compounds are not required by EPA method 504and were not included during analysis of the associated samples.

3.2.2.6 Matrix Spike/Matrix Spike Duplicate Recoveries The sample obtained at wasused for matrix spike/matrix spike duplicate for this delivery group. The percent recovery for DBCP wasslightly below acceptable control limits in the matrix spike duplicate sample. RPD results were withinacceptable control limits. The residential sample results have not been qualified based on matrixspike/matrix spike duplicate results.

3.2.2.7 Laboratory Check Samples One LCS was analyzed for this sample group. All percent recoverieswere within acceptable control limits.

4.0 QUALIFICATION OF DATA

All analytical data are acceptable for use. Additional qualifiers were required for samples analyzed by EPAmethod 524.2 due to methylene chloride contamination In the trip blank. Estimated concentrations havebeen raised to the detection limit and labeled non-detect (ND) in the associated samples. Reportedconcentrations above detection limits and less than 10 times the blank contamination have been labelednon-detect, and the detection limit has been raised to the reported concentration.

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NDNOMDNDMONDNONDNOND

2.8NONDNDNONDNCNONONDNONDNONDNDNDNONDNONDNDNONONCNONONONDNONDNOND

O.SO.S0.8O.SO.SO.S0.50.5O.S0.5O.S0.50.50.5O.SO.SO.SO.SO.SO.SO.S0.5O.SO.SO.S0.5O.SO.SO.SO.SO.SO.SO.SO.S0.50.5O.SO.SO.I0.10.1O.iO.SO.SO.S0.5O.iO.SO.S0.50.5O.S0.50.50.5O.S0.50.5

UflA.ua/Li!SA.uaA.ua/Lu0A.ug/LuaA.Ufl/LugA.Ufl/LUflA.uflA.uflA.ugA.

ugA.ugA.ugA.uaA.ugA.ugA.UQA.

uqA.uflA,UQ/L

UQA,

Ufl/LuqA.uaA.UQA.uaA.uqfl,U9AuaA.uaA.ugA.UflA.UgA.uaA.uaA.uaA,uqA.UflA,uaA.UQA.

uaA.UflA,ugA, |Ufl/L -UQ/L

UQ/LUQ/L

ugA.uaA.uaA.uaA.us/l

---------����� .. ,��-

Analvt• cie-1 2-0ichlcro•then• c:ie-1 3-0ichloro-----n• n..Sutvtb9nzene n..Pronvlbenzene

lo-J.o--... ._..toluen. •ec·Butvlbenune tert-Sutvtt.nuna trent-1 2-D�h&oroa!hene tran1· 1 3-0ichloronro.-...ne Benzene Bromobenzene Bromochk>romethane Bromodichlorometh•n• 8romofonn BromomethaM Carbon tetrachloride Chlorobenzene Chlorudibromometh•n• Chtoroethan• Chloroform Chlo,..,,,.thone Dlbromomethane DichloR)difluoromethane Ethwtbenzene Heachforobutadtene l•orurr.nvlbenzene Methvfene chloride Nanhthalene s-... Tatrach&oro•th•M Toluene Trichloroethone Trichlorofluorometh•n• Vlnvf chloride )(v!.neo ltotafl 1 1-Dichloroothone I 1-Dichloroethone 1 1-0lchloroA--n• 1 1 1-Trichforoethon• 1 1 1 2-Tetrach&oroethane 1 1 2-Trichloroethane 1 1 2 2-Tetrachloroethane 1 2-0ibromo·3-chloronro1t.ane 1 2-Dibromoothone 1 2-Dichlorobennne 1 2-Dlchloroethone 1 2-Dichloro----n• 1 2 3· Trtchforobenz•n• 1 2 3-Trichloro--n• 1 2 4,. Trichlorobenzen• 1 2 4,. Trim4thvlbenzene 1 3-Dichlorobennne 1 3-0lchloroA-A•ne 1 3 5-Trimethvlbenzene 1 4-DM:hlorobennn• 2-Chlorotolu•ne 2 2-0ic:hloro .. --... n• 4-Chlorotoluene

Client s."'Ple ID:

Oete Rec•l..,.d: 2 •c-98

Data S.O'p .. d; 21-0ec-98

Oat• An,;lvred .;19-0ec-98

Matrix; wATER c(.!:02

CAS No. [Cl, tUlt LDL

158-H-< N O.!i

100111-01·5 N 0.5

1°'4-51-d N 0.5

103-115- N 0.5

99-87-11 N 0.5

135-96-.. N O.!i

98-0ll-ll N 0.5

150-11()..0 N 0.11

i ooe11'2-e -N' 0.!i N O.!i 71-43-2

106-80-' N O.!i

7 ... 97-5 N 0.5

75-27-4 N 0.5

75-25-2 N 0.5

7 ... 93.9 .. 0.5

511-23-5 NO 0.5

106-90-"1 N O.!i

124-46-, N 0.5

75-00-3 N O.!i

117-1111-3 N 0.5

7 ... 87-3 , .. O.!i

7 ... 95-3 N O.!i

75-71-8 N 0.11

100-41 4 N O.!i

87-116-3 N O.!i

96-82-8 , .. 0.5 N O.!i 75-09-2

91-20-3 N O.!i

100-42-11 N 0.5

127-18 4 N O.!i

ioe-9a 3 ND 0.5

ND 0.5 79-01-11 75-119-4 ND 0.5

75-01-4 ND 0.5

1330-2'�7 ND 0.5

75-3-4-3 ND 0.5

75-35-4 ND O.!i

5113.5g.ll ND 0.5

71-55-11 1 .. D O.!i

1130-20-ll ND 0.5

79-00.5 ••D 0.5

79-3 .. 5 ··D 0.5

90-12·8 ... D 0.5

100-93.4 .. o 0.5

95-50-1 uD O.!i

107-oo-2 NQ...., .. O.!i

76-87-5 •. o 0.5

87-111-0 � 0.5 -� �D 0.5 98-111-4

120-82-, #----- 0.5 ·--

D 0.5 95-113-" 541·73-1 D O.!i

1•2-21-9 D 0.5

106-117'8 D 0.5

ioo-.-s.:7 D O.!i

95-49-"' D 0.5

594-2n 7 0.5

10&-43-" D 0.5

Unit8 '•-IL ·-IL ·-IL ·-IL ·-IL ·-IL •-IL ·-/\_

""IL ·-IL ·-IL -IL ual\_ uni\_ ua/l

1·-IL 1.-ll lun1L ·-IL

iUGI\_ '•-IL 1·-IL '--IL ·-IL unlL ·-IL ·-· ·-IL ·-IL ·-· ·-IL

1·-ll '---IL '·-IL '·-IL ·-IL ·-IL ·-IL ·-IL

•-IL ·-IL --· ·-IL ·-IL •-IL ·-IL ·-IL ·-IL

··--· l·-ll ·-· ·-IL

'•-IL 1.-IL l·-ll lua1L '·-· ·�11..

20-0.C-118 21-0ec-98 29-0ec-98

WATER CPLQ3 Re•ult

1 4 NO ND NO ND ND ND ND ND ND ND ND ND NO ND ND ND NO ND NO ND ND ND NO ND ND NO ND ND ND ND ND ND ND ND

0.57 ND ND ND ND ND ND ND ND NO ND NO NO ND NO ND ND ND ND ND NO NO ND

-- -�

LDL 0.!i 0.5 0.5 0.5 0.11 0.11 0.5 O.!i 0.11 0.!i O.!i 0.5 0.5 O.!i 0.5 O.!i 0.5 O.!i 0.5 O.!i 0.5 O.!i O.!i 0.11 0.5 0.11 0.11 0.5 0.11 0.11 O.!i 0.5 O.!i 0.5 O.!i 0.5 0.5 O.!i O.!i 0.5 0.11 O.!i 0.5 0.11 0.5 0.5 O.!i 0.5 0.5 0,5 0.5 O.!i 0.5 0.5 0.5 0.5 0.5 0.5

Toblo 1 - Vofidoted Reefdentlof WoH Anolyticol Re1ulte Conroll Rollyerd - Elkhort, lndlon•

SWB48 • E.P.A Method &24.2 Onntono Weter Vo�tlle Organtc• fourth Quarter S-.pllnQ E .. nt - 1998

DUP 2s)>eo-98 20-0.C-98 21_,o.c-98 21-0.c-98 29.oec-98 29-0.C-98

WAl'ER WATER CPL'l4 CPLQ5

Unite AN·"' LDL Unita Retult LDL Unit•

lunlL ,_. O.!i -IL 19 2.!i l•-IL ·-�-"

lualL ND 0.5 ""IL ND 2.5 lunlL ,_IL NO 0.5 ualL NO 2.5 lunlL

·-· ND 0.5 ualL NO 2.IS 1•-IL

1.-• ND O.!i ·-IL ND 2.5 1·-IL

·-· ND 0.5 uni\_ ND 2.11 '·-IL

ualL ND O.!i unlL NO 2.11 lun/l.

·-IL ND 0.5 ualL NO 2.11 lunlL •uni\_ ND 0.5 ·-IL ND 2.!i •-IL

1._. ND O.!i •-IL NO 2.!i ·-IL

-· ND 0.5 ual\_ ND 2.11 lun/l

ua/l ND 0.5 ua/l ND 2.!i ua/l. •-IL ND O.!i ·-IL ND 2.!i ualL

ualL ND 0.5 ua/l ND 2.!i ·-IL

ualL ND 0.5 •-IL 2.5 2.5 ··-11.. lualL ND 0.5 lunlL NO 2.5 •-IL

1.-A ND O.!i lun/l NO 2.11 ua/I.

l·-IL ND 0.5 lua/l ND 2.5 un/l

lual\_ ND 0.5 '•-IL ND 2.!i ·-IL 1._. ND 0.5 •-IL NO 2.5 ·-IL

lualL ND 0.5 lunl\. ND 2.!i ·-IL lualL ND 0.5 lualL ND 2.5 -IL

1.-IL ND 0.5 luaJL ND 2.5 ·-IL

!uaJL ND 0.5 ·-IL ND 2.11 ·-IL lualL ND 0.5 •-IL ND 2.!i ·-IL '·-· ND 0.5 ""IL ND 2.11 •-IL

l•-A ND 0.11 unlL ND 2.5 ·-IL unlL ND O.!i ·-IL ND 2.5 ualL

ualL ND 0.5 ·-IL NO 2.5 ·-IL

·-· ND O.!i •-IL ND 2.5 unlL

·-· NO 0.5 ualL NO 2.5 •-IL

'·-· ND O.!i '""IL 811 2.5 ·...,IL 1.-IL ND O.!i lualL NO 2.5 un/l 1.-• ND 0.5 lual\_ NO 2.11 ua/l.

lunlL ND 0.5 lua/l ND 2.5 iualL

l•-IL 0.511 O.!i 'ua/I. NO 2.5 ·-IL 1--· ND 0.5 ·-IL ND 2.!i ualL

1._. ND 0.5 '•-IL NO 2.5 ·-IL

luall. ND 0.5 lua/l ND 2.5 ··-IL ··-· NO 0.5 ua/l ND 2.5 ·-II.. ,_IL ND 0.5 ualL NO 2.!i ""IL ·-· ND 0.5 ·-IL ND 2.!i uni\_

unlL ND O.!i •-IL ND 2.11 ·-IL

·-· ND 0.5 ua1L ND 2.!i •-IL

·-· ND 0.11 unlL ND 2.5 un/l.

-IL ND 0.5 ualL ND 2.11 ua/l uni\_ ND 0.5 ·-IL ND 2.!i ·-IL

iun/l ND -·�-·- 0.5 un/l. NO 2.5 uni\_ '•-IL ND 0.5 :uni\_ NO 2.5 un/l 1.-11. ND 0.5 '·-IL ND 2.5 lua/l.

l""IL ND 0.5 '•-IL ND 2.5 ·-IL

iualL ND 0.5 •-IL ND 2.11 •-IL

·-IL ND 0.11 uni\_ ND 2.11 ""IL ·-IL ND O.!i ua1L NO 2.5 lunlL ·-IL ND 0.5 ·-IL NO 2.11 =

-IL ND 0.5 •-IL ND 2.5 l·-ll

·�IL NO o.s ual\_ ND 2.11 lualL ·-IL ND 0.5 uglL ND 2.5 ua/l.

20-0ee-98 21-Deo·H 29-0ec-98

WATER CPLOll Reeult LDL

5.8 0.5 -NO 0.5 NO 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5

0.35 J 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 NO 0.5 ND 0.5 ND 0.5 NO 0.5 ND 0.5 ND 0.5 NO O.!i ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.11 ND O.!i ND 0.5 ND O.!i

33 0. 5 ND 0.5 ND 0.5 NO 0.5 NO 0.5 NO 0.5 ND 0.5 ND 0.5 NO 0.5 NO 0.5 ND O.!i ND 0.5 ND 0.5 NO 0.5 ND 0.5 ND 0.5 NO 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 ND 0.5 NO 0.5

211-0ec-98 20-Dec-98 21-0ec-98 21-0.C-98 29-0ec-98 29-0ec-98

WAl'ER WATER CPL07 CPl09

Unit9 Ree ult LDL Unitli Reeult LDL Unit• lualL ND 0.5 '•-IL ND 0.5 un/l. lua/l. NO 0.5 ,,_,, ND o.5 ua/l. lualL ND 0.5 unlL ND O.!i ualL lunlL ND 0.5 ·-· ND 0.5 un/l. lunlL ND 0.5 lualL ND 0.11 un/l. lualL ND 0.5 lualL ND 0.11 un/l.

unlL ND 0.11 -IL ND 0.11 ualL 1ua1L ND 0.5 ualL ND 0.11 ·�IL lualL NO 0.5 ua/l ND O.!i ·-IL ·-

lualL ND 0.5 iua/l ND 0.11 un/l. ualL ND 0.5 ua/l ND 0.11 ualL ua/l. ND 0.5 -IL ND 0.5 ualL •-IL ND 0.5 ua/l ND O.!i un/l ualL ND 0.5 ualL NO 0.5 un/l. ·-IL ND 0.5 ·-IL ND 0.5 unlL ualL ND 0.5 lualL ND 0.5 unlL ualL ND 0.5 lualL ND 0.5 ua/L ualL ND 0.5 lualL ND O.!i ua/l.

·ualL ND 0.5 luall ND 0.5 1·-11.. unlL ND 0.5 lualL ND 0.5 un/l ualL ND 0.5 lualL ND 0.5 un/l. ·-IL ND 0.5 lualL ND O.!i lua/l. ·-IL NO 0.5 lualL ND 0.5 lua/l. ualL ND 0.5 '""/\. ND 0.11 ·•-IL ualL ND 0.5 1,-A ND 0.11 ,._IL ·-IL ND 0.5 lualL ND 0.11 ualL ·-IL ND 0.5 luall ND 0.5 lualL ualL ND 0.5 unlL ND O.!i un/l ·-IL ND 0.5 ·-· ND 0.5 un/l ·-IL ND 0.5 ualL ND 0.5 un/I.. ·-IL ND 0.5 ua/l ND 0.5 unll .

'uall. ND 0.11 unll ND 0.5 lua/I. ·•-IL ND 0.5 (...,IL ND 0.5 ua/l. '""IL ND 0.5 ua/l. ND O.!i un/I.. luall. ND 0.5 ua/l ND 0.5 uall. ,_II. ND 0.5 uall ND 0,!i un/I.. ualL ND 0.5 lun/l. ND O.!i 1.-11.

ualL ND 0.5 ·-· ND O.!i un/l. ·-IL NO 0.5 ualL ND 0.5 un/l. ualL ND 0.5 ·-" ND 0.11 ualL ualL ND 0.5 ualL ND O.!i ua/l ·-IL ND 0.5 ualL ND 0.11 unlL unlL ND 0.5 ua/l ND O.!i un/l -IL NO 0.5 ua/l ND 0.5 ---11..

ualL ND 0.5 ualL ND 0.11 ua/I. ·-IL ND 0.5 llCllL ND 0.5 ua/l. ua/I. ND 0.5 ua/l ND 0.5 un/l. ualL NO 0.5 ua/l. ND O.!i unlL

'ua/I. NO 0.5 ua/L ND 0. 5 un/l. ualL ND 0.5 lua/l. ND O.!i ua/l. ualL ND 0.5 lun/l. ND 0.5 un/l. '-IL ND 0.5 ua/l ND 0.5 un/l ,_II.. ND 0.5 ualL ND O.!i un/l ualL ND 0.11 '�" ND 0.11 lunlL ua/l. ND o.s lun/l ND O.!i lua/l. ua/l. NO 0.5 1._. ND 0.5 un/l ualL ND O.& lualL ND 0.5 un/l uo/\. ND o.s ;ua/l ND 0.5 ua/l

Table 2 -Validated Laboratory Analytical DataConrail Railyard - Elkhart, Indiana

EDB/DBCP by EpA Method 504Fourth Quarter Sampling Event -1998

Sample IDReceiving DateSample DateExtraction DateAnalysis DateMatrix

1.2-Difafomo-3|1,2-Dibfomoethane (EDB) ______ 106-93J

26-Oec-9821 -Dec-9814-Jart-9914- Jan-99

WATERCPLOC _ _ __

ND —————

26-D6C-9821 -Dec-9814-Jan-9914-Jan-99

VVATERrW-OObeiult i •"- ,U"*«

03 ————— "°"* """-02ug/L_

26-D6C-9822-Dec-9814-Jan-9914-Jan-99

WATERCPLQEResultNO ____NO

LDLimI o.cJ?.

o.c2

UNITSUnit*ua/Lugrt.

26-D6C-9822-Dec-9814-Jan-9914- Jan-99

WATERCPLQFResult LDL Units

ua/Lugfl.

26-Dec-9822-D8C-9814-Jan-9914-Jan-99

WATERCPLQGResult LDL UnitsNO 0.02 UO/LND 0.02 ugfl.

21 -Dec-9814-Jan-9914-Jan-99

WATERCPLQ2Result LDL Units

uo/LugA.

26-Dec-9821 -Dec-9814-Jan-9914-Jan-9S

WATER !CPLQ3Result LDL UnitsND 0.02 us/LND 0 02 ug/L

Sample ID:Receding DateSample DateExtraction Date:Analysis Date:Matrix:

1.2-Dibfomo-3-chlofopropane (DCBP) 96-12-8

DUP26-Dec-9821 -Dec-9814-Jan-9914-Jan-99

WATER

NO 0.02 uo/L

26-Oec-9821 -Dec-9814-Jan-9914-Jan-99

yVATERrPLQS _______| Jt ———— T.DL Unite

IS u ^D I .2

j . "»*•02 ug/L

26-Dec-9821 -Dec-9814-Jan-9914-Jan-99

WATERCPLQ6Result LDL

ND nr"up/.uoA

26-Dec-9821 -Dec-9814-Jan-9914-Jan-99

WATERCPLQ7

ND 0.02 ug/L

26-DBC-9821 -Dec-9814-Jan-9914- Jan-99

WATERCPLQ9

ND 0.02up/.ug/L

26-DBC-9821 -Dec-9814-Jan-9914-Jan-99

WATERCPLQA

ND 002 ug/L02 ug/L

P\Conrail\q498\504val.xls