Field Sheets and Analytical Results for Groundwater and ...

AUG 0 l 2001

Norm SilerUnion Pacific Railroad Company1416 Dodge Street, Room 930Omaha, NE 68179-0930

Dear Mr. Siler: I ^ £--~CX~O/.

RE: Folder No. 01890-2710th Street SiteColumbus, NE

Enclosed are the field sheets and analytical results for groundwater and air samplescollected by our contractor, CDM Federal Programs, Inc., on railroad property during the week ofApril 24, 2001. The samples were collected as part of a continuation of EPA's in-well strippertreatability study. All samples were analyzed for volatile organic compounds and water qualityparameters.

The groundwater that was sampled from the monitoring wells on railroad property wasused to establish groundwater quality in the area. Therefore, we are providing you informationregarding how the concentrations of compounds detected during the April 2001 sampling eventcompare with EPA standards for groundwater quality. The Safe Drinking Water Act hasestablished Maximum Contaminant Levels (MCLs) for a number of contaminants that areconsidered safe for a drinking water supply. The MCLs for the contaminants of concern at thissite are as follows: tetrachloroethylene (PCE) is 5 micrograms per liter (ug/1), trichloroethylene(TCE) is 5 ug/1, cis-1,2 dichloroethylene (cis-1,2 DCE) is 70 ug/1 and trans-1,2 dichloroethylene(trans-1,2 DCE) is 100 ug/1. Comparison of the contaminants detected in monitoring wells withthe corresponding MCLs are as indicated on the enclosed table titled "MONITORING WELLSRESULTS: 04/24/01." As indicated on this table, all of the detectable concentrations of PCEand TCE are above the MCL of 5 ug/1. Cis-1,2 DCE and trans-1,2 DCE were also detected insome of the monitoring wells but the concentration did not exceed any MCLs.

The EPA collected an air sample of the air generated by one of the in-well strippers toassess treatment requirements and the ability of the strippers to remove contaminants from thegroundwater. The results of this analysis are also enclosed.

SUPR:IANE:DLR:7596:072701 :G:\IANE|RR DATA LETTER 042401 £ ^c/> 5

IANE IANE O ^/YERS CURTIS 2029238 ^-^ g|

oo

Copies of this correspondence are being furnished to Dr. Brian Zurbuchen of theNebraska Department of Environment Quality and Mr. Jack Daniel of the Nebraska Health andHuman Services System. If you wish to discuss matters related to public or private watersupplies, I suggest that you contact Mr. Daniel at (402) 471-0510. Additionally, Dr. Zurbuchenmay be contacted at (402) 471-6411.

This information is forwarded to you in accordance with provisions of Section 3007(a) ofthe Resource Conservation and Recovery Act of 1980, as amended and Section 104(e) of theComprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended.

If you have any questions or comments, you may contact me at (913) 551-7703.

Sincerely,

Nancy J. Swyers, P.E.Iowa/Nebraska Remedial BranchSuperfund Division

Enclosures

cc: Brian Zurbuchen, NDEQ (w/enclosure)Jack Daniel, NHHSS (w/enclosure)Kristian Ehrhorn, Union Pacific Railroad

bcc: Jeff Field, WWPD/DWGW (w/enclosure)Janice Kroone, ER&R (w/enclosure)

m7*.CJcn

8*Ul

Monitoring Well Location

Treatability Study Well Location

Treatment Well Location

200 200 400 Feet

10th Street Treatability StudyColumbus, Nebraska

TDD: S07-0002-006PAN: 1494TSTTXX

Prepared by B. Barrontra-tmtuw'^UUu

ecology and environment, inc.OVERWND FARK KANSAS Base map source: City of Columbus Engineering Office, 19S8;

E SEGPSDala. 1999,2000.

TENTKST.APRFigure 3-5: Treatability Study IWS and Monitoring Well Locations

MONITORING WELLS RESULTS04/24/01

Sampled

107

110

111

142

143

144

145

146

147

MCL

MonitoringWell#

MW-14A

MW-14B

MW-14C

KV-1

KV-3

KV-4

KV-5

KV-2

KV-6

Contaminants/Concentrations in ug/1

PCE

24

38

26

11

9

280

31

14

20

5

TCE

63

380

1 20

96

52

250

39

140

130

5

cis1,2 DCE

2

12

-

2

1

2

1

2

1

70

trans1,2 DCE

-

1

-

-

-

-

-

-

-

100

PCE = tetrachloroethyleneTCE = trichloroethylenecis 1,2 DCE = cis 1,2 dichloroethylenetrans 1,2 DCE = trans 1,2 dichloroethyleneMCL = Maximum Contaminant Level

m

8"o

Activity Number: NJS7CS ASR Number: 1073Activity Desc: 10th Street site - Redox/Municipal Well GW Sampling

RLAB Approved Sample Analysis Results5/30/2001

Analysis / Analyte Units

Alkalinity (bicarbonate) in WaterAlkalinity, bicarbonate mg/L

Carbon Dioxide in Water by Field MeasurementCarbon Dioxide rng/L

Chloride in WaterChloride mg/L

Conductivity by Field MeasurementConductivity umhos/c

Dissolved Organic Carbon in WaterDissolved Organic Carbon mg/L

Ferrous Iron in Water by Field MeasurementIron, Ferrous rng/L

Hardness in Water by CalculationHardness as CaCO3 mg/L

Metals in Water by ICPIron ug/LManganese ug/L

Nitrate in Water by Field MeasurementNitrate mg/L

pH of Water by Field MeasurementpH SU

Sulfate in Water by Field MeasurementSulfate mg/L

IDS or Total Dissolved SolidsSolids, total dissolved mg/L

Temperature of Water by Field MeasurementTemperature Deg C

Total Dissolved Oxygen in Water by Field MeasurementDissolved Oxygen mg/L

Total Organic Carbon in WaterTotal Organic Carbon mg/L

Turbidity of Water by Field MeasurementTurbidity NTU

VOCs in Water by GC/MS for Low Detection LimitsAcetone ug/L

ug/Lug/Lug/Lug/Lug/Lug/Lug/L

BenzeneBromochloromethaneBromodichloromethaneBromoformBromomethane2-ButanoneCarbon Disulfide

107-

328

72

34.1

0.711

1 U

0.0

296

162434

0.05

7.09

>70

266

15.31

3.52

1.4

1.5

Ci ~cn 5

8*ono

5 U1 U1 U1 U1 U1 U5 U1 U

Page 9 of 56



Analysis / Analyte

Carbon TetrachlorideChlorobenzeneChloroethaneChloroformChloromethane1 ,2-Dibromo-3-ChloropropaneDibromochloromethane1 ,2-Dibromoethane1,2-Dichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethenecis-1 ,2-Dichloroethenetrans-1 ,2-Dichloroethene1 ,2-Dichloropropanecis-1 ,3-Dichloropropenetrans-1 ,3-DichloropropeneEthyl Benzene2-HexanoneMethylene Chloride4-Methyl-2-PentanoneStyrene1 ,1 ,2,2-TetrachloroethaneTetrachloroetheneToluene1 ,2,4-Trichlorobenzene1,1,1-Trichloroethane1 ,1 ,2-TrichloroethaneTrichloroetheneVinyl Chloridetotal Xylene

Units

ug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/L

107-_

1111111111111121111152511

241111

6311

UUUUUUUUUUUUUU

UUUUUUUUUU

UUUU

UU

mK~in 5

8*oGO

Page 10 of 56





Carbon Dioxide in Water by Field MeasurementCarbon Dioxide mg/L




Ferrous Iron in Water by Field MeasurementIron, Ferrous mg/L






TDS or Total Dissolved SolidsSolids, total dissolved mg/L





VOCs in Water by GC/MS for Low Detection LimitsAcetone ug/LBenzene ug/LBromochloromethane , ug/LBromodichloromethane ug/LBromoform ug/LBromomethane ug/L2-Butanone ug/LCarbon Disulfide ug/L

110-

7.17

>70

430

15.32

4.04

1 U

2.0

5 U1 U1 U1 U1 U1 U5 U1 U

111-

391

89

19.5

0.792

1.1

0.20

394

14401090

410

0

26.6

1.444

0.06

68.2

40224.5

11.89

>70

19.14

1.99

5.4

2.5

5 U1 U1 U1 U1 U1 U5 U1 U

m

co §

Page 11 of 56



Analysis / Analyte

Carbon TetrachlorideChlorobenzeneChloroethaneChloroformChloromethane1 ,2-Dibromo-3-ChloropropaneDibromochloromethane1 ,2-Dibromoethane1, .vaifililiwjhftnasnft.1 ,3-Dichlorobenzene1,4-Dichlorobenzene1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethenecis-1 ,2-Dichloroethenetrans-1 ,2-Dichloroethene1,2-Dichloropropanecis-1 ,3-Dichloropropenetrans-1 ,3-DichloropropeneEthyl Benzene2-HexanoneMelhylene Chloride4-Methyl-2-PentanoneStyrene1,1,2,2-TetrachloroethaneTetrachloroetheneToluene1 ,2,4-Trichlorobenzene1,1,1 -Trichloroethane1,1,2-TrichloroethaneTrichloroetheneVinyl Chloridetotal Xylene

Units

ug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/L'in/I-ug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/L

110-_

1 U1 U1 U1 U1 U1 U1 U1 U1. U1 U1 U1 U1 U1 U

1211 U1 U1 U1 U5 U2 U5 U1 U1 U

381 U1 U1 U1 U

3801 U1 U

111-_

1 U1 U1 U1 U1 U1 U1 U1 U1. U1 U1 U1 U1 U1 U1 U1 U1 U1 U1 U1 U5 U2 U5 U1 U1 U

261 U1 U1 U1 U

201 U1 U

8CJ1

Page 12 of 56










Hardness in Water by CalculationHardness as CaCOS mg/L




Sulfate in WaterSulfate mg/L







ug/LBenzeneBromochloromethaneBromodichloromethaneBromoformBromomethane2-ButanoneCarbon Disulfide

ug/Lug/Lug/Lug/Lug/Lug/L

142-

360

50.0

1180

394

12.4 U15.3

7.15

239

486

15.77

2.1

2.0

143-

280

62.4

1149

2.2

425

12.4 U53.8

7.68

285

794

16.34

1.8

0.85

144-

416

19.9

883

1.3

377

1240754

7.37

117

642

15.64

1.4

1.6

51111151

UUUUUUUU

51111151

UUUUUUUU

51111151

UUUUUUUU

m

oo

Page 27 of 56



Analysis / Analyte

Carbon TetrachlorideChlorobenzeneChloroethaneChloroformChloromethane1 ,2-Dibromo-3-ChloropropaneDibromochloromethane1,2-Dibromoethane1,2-Dichlorobenzene1 ,3-Dichlorobenzene1,4-Dichlorobenzene1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethenecis-1 ,2-Dichloroethenetrans-1 ,2-Dichloroethene1,2-Dichloropropanecis-1 ,3-Dichloropropenetrans-1 ,3-DichloropropeneEthyl Benzene2-HexanoneMethylene Chloride4-Methyl-2-PentanoneStyrene1,1,2,2-TetrachloroethaneTetrachloroetheneToluene1 ,2,4-Trichlorobenzene1,1,1 -Trichloroethane1,1,2-TrichloroethaneTrichloroetheneVinyl Chloridetotal Xylene

Units


142-_

1111111111111121111152511

111111

9611

UUUUUUUUUUUUUU

UUUUUUUUUU

UUUU

UU

143-_

111111111111111111115251191111

5211

UUUUUUUUUUUUUU

UUUUUUUUUU

UUUU

UU

144-_

1111111111111121111152511

2801111

25011

UUUUUUUUUUUUUU

UUUUUUUUUU

UUUU

UU

m

co

8"

Page 28 of 56



Analysis / Analyte

Alkalinity (bicarbonate) in WaterAlkalinity, bicarbonate

Chloride in WaterChloride

Conductivity by Field MeasurementConductivity

Dissolved Organic Carbon in WaterDissolved Organic Carbon

Hardness in Water by CalculationHardness as CaCO3

Metals in Water by ICPIronManganese

pH of Water by Field MeasurementPH

Sulfate in WaterSulfate

TDS or Total Dissolved SolidsSolids, total dissolved

Temperature of Water by Field MeasuremenTemperature

Total Organic Carbon in WaterTotal Organic Carbon

Turbidity of Water by Field MeasurementTurbidity

VOCs in Water by GC/MS for Low DetectionAcetoneBenzeneBromochloromethaneBromodichloromethaneBromoformBromomethane2-ButanoneCarbon DisulfideCarbon TetrachlorideChlorobenzeneChloroethaneChloroformChloromethane1 ,2-Dibromo-3-ChloropropaneDibromochloromethane1 ,2-Dibromoethane1 ,2-Dichlorobenzene1,3-Dichlorobenzene

Units

mg/L

mg/L

umhos/c

mg/L

mg/L

ug/Lug/L

SU

mg/L

mg/L

t

Deg C

mg/L

NTU

Limitsug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/L

145-_

347

54.7

1108

1.5

439

12.4 U111

7.08

215

866

16.10

1.5

1.8

5 U1 U1 U1 U1 U1 U5 U1 U1 U1 U1 U1 U1 U1 U1 U1 U1 U1 U

146-_

362

28.1

1050

1.8

324

12.4 U5.40

7.66

200

678

15.5

1.6

1.3

5 U1 U1 U1 U1 U1 U5 U1 U1 U1 U1 U

UUUUUU

1 U

147-_

304

23.8

889

1.2

306

100 U57.7

7.52

148

550

15.3

1.1

6.0


m75

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Page 29 of 56



Analysis / Analyte

1,4-Dichlorobenzene1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethenecis-1 ,2-Dichloroethenetrans-1 ,2-Dichloroethene1,2-Dichloropropanecis-1 ,3-Dichloropropenetrans-1 ,3-DichloropropeneEthyl Benzene2-HexanoneMethylene Chloride4-Methyl-2-PentanoneStyrene1 , 1 ,2 ,2-TetrachloroethaneTetrachloroetheneToluene1 ,2,4-Trichlorobenzene1,1,1-Trichloroethane1,1,2-TrichloroethaneTrichloroetheneVinyl Chloridetotal Xylene

Units

ug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/L

145-_

111111111152511

311111

3911

UUUU

UUUUUUUUUU

UUUU

UU

146-_

111121111152511

141111

14011

UUUU

UUUUUUUUUU

UUUU

UU

147-_

111111111152511

201111

13011

UUUU

UUUUUUUUUU

UUUU

UU

mA

TtO

8

Page 30 of 56

ftPR.30.2001 9=50flM CDM FEDERflL PROGRflMS NO.323 P.3

Sample Collection Field SheetUS ERA Region VII

Kansas City, KS

ASR Numbar; 1073 Sample Number: 107 QC Code: _ Matrix: Water Tag ID: 1073-107-

Activity Number; NJS7CS AptMty Leader: Swyers, NancyActivity Desc: 10th Street site - Redox/Municipal Well QW Sampling

Location: Columbus State: NebraskaSuperfund Name; 10TH STREET SITE - Site Evaluation/Disposition

Type: SuperfundSite IP: 07CS Sits OU: 00

location M V*>External Sample Number: ____________

Expected Cone: Circle One: Low Medium High Date

Latitude: __ __ :__ SamP'e Collection: Start «f ̂

Longitude: ___ __ __ End / /

Time (24 Hrl

/L_:J^

Laboratory Analyses:Container Preservative Holding Time Analysis

1 - 1 Liter amber glass H2S04 to pH<2, 4 Deg 28 Days Total Organic Carbon in WaterC

1 - 1 Liter Cubitainer 4 Pag C1-1 Liter Cubitainer f DegC

14 Days Alkalinity (bicarbonate) in Water28 Days Chloride in Water

1 - 1 Liter Cubitainer HN03 acidify, 4 Deg C 1BO Days /Metals in Water by ICP4 - 40rnL VGA via) 4 Deg C, HCL to pH<2 14 Day^f VOCs In Water by GC/MS foj Low DetectionI- I LH

Sample collected by;

m7Sr> K-en 2T) 3-O en

8-

RPR.30.2001 9=51AM CDM FEDERflL PROGRAMS NO.323 P.6

Sample Collection Field SheetUS EPA Region VII

Kansas City, KS

ASR Number; 1073 Sample Number: 110 QC Code: _ Matrix: Water Tag ID: 1073-110-_

Activity Number: NJS7CS Activity Leader: Swyers, NancyActivity Desc: 10th Street site - Rsdox/Munlclpal Well GW Sampling

Location: Columbus State: NebraskaSuperfund Name: 10TH STREET SITE - Site Evaluation/Disposition

Type: SuperfundSite ID: 07CS Site OU: 00

Location Desc: /l/t £^/-/<7^1

External Sample Number;

Expected Cone: Circle Ope: Low Medium High DateLatitude: Sample Collection: Start t/ / p ^ / o f

Longitude: End / /

Tims 124 Hr)

1

Laboratory Analyses;Container Preservative "(Holding Time Analysis1 • 1 Liter amber glass H2S04 to pH<2, 4 Deg 28 Days Total Organic Carbon in Water

C

ueg u————————— 2H Days—Solfate in WotoF -~Cubitainer 4 Deg C 26 Days Chloride in Water

1 -1 Liter Cubitainer 4 Deg C 14 Days Alkalinity (bicarbonate) in Water1 -1 Liter Cuhjtainer HN03 acidify, 4 Deg C 180 Days Metsis in Water by ICP4 - 40ml_ VOA vial 4 Deg C, HCL to pH<2 14 Days VOCs in Waterby GC/MS for Low Dete'ction

Sample collected by:

fiPR.30.2001 9:51flM CDM FEDERflL PROGRRMS NO.323 P.7


Kansas City, KS

ASR Number: 1073 Sample Number: 111 QC Code: _ Matrix; Water Tag ID: 1073-111-

Activity Number: NJS7CS Activity Leader; Swyers, NancyActivity Desc: 10th Street site - Redox/Mynicipal Well GW Sampling

Location; Columbus State; NebraskaSuper-fund Name: 10TH STREET SITE - Site Evaluation/Disposition


Location Desc; M W^

External Sample Number: ___________

Expected Cone; Circle One: Low Medigm High Date

Latitude: __ __ __ SamP|e Collection: Start y /j.y/1

Longitude: ___, __ __ End ___/__/_

Time (24 Hr)


1 -1 Liter amber glass H2S04 to pH<2, 4 Oeg 28 Days Total Organic Carbon in WaterC

1 • 1 Liter Cubitainer 4 Deg C 14 Days Alkalinity (bicarbonate) in Water

m

( \

1 - 1 Liter Cubitainer 4 Deg C 28 Days Chloride In Water1 • 1 Liter Cubitainer HN03 acidify, 4 Deg C 180 Days /Metals in Water by ICP4 • 40mL VOA vial 4 Peg C, HCL to pH<2 14 Days / VOCs in Water by GC/MS for Low Detection

Limits

Sample Comments:

.(fl\n \ fc

jfrU*J



Kansas City, KS

ASR Number: 1073 Sample Number: 142 QC Code: _ Matrix: Water Tag ID: 1073-142-

Activity Number: NJS7CS Activity Leader: Swyers, Nancy

Activity Desc: 10th Street site - Redox/Municipal Well GW Sampling

Location: Columbus State: Nebraska

Superfund Name: 10TH STREET SITE - Site Evaluation/DispositionType: Superfund

Site ID: 07CS Site OU: 00

External Sample Number:

Expected Cone: Circle One: Low Medium High

Latitude: Sample Collection:

Longitude: ____ __ __

Date

Start flf Itty 01

End / /

Time (24 Hr)

m7^PiCn

8*-viCO

Sample Comments:

Laboratory Analyses:Container

1 - 1 Liter amber glass- IL G(tY\b2^~

.1 - 1 Liter cubitainer

1 - 1 Liter Cubitainer



4 - 40mL VOA vial

IL

Preservative Holding TimeH2SO4 to pH<2, 4 Deg 28 Days

4 Deg C

4 Deg C

4 Deg C

HNO3 acidify, 4 Deg C

4 Deg C, HCL to pH<2 14 Days

28 Days

28 Days

14 Days

AnalysisTotal Organic Carbon in WaterT>'">s>olvtdL Off jafuc . CarbonSulfate in WaterChloride in Water

Alkalinity (bicarbonate) in Water/180 Days Metals in Water by ICP^n$ F* Ofl Ivj ^

VOCs in Water by GC/MS for Low DetectionLimits

o-ral

V^J :

f^y «*f <$



Kansas City, KS







Location Desc: V.\J—>



Latjtude: Sample Collection:

Longitude:

Date

Start otf./2>$/Ol

End / /

Time (24 Hr)

10 : OO

Laboratory Analyses:

Container Preservative Holding Time Analysis

1 - 1 Liter amber glass H2SO4 to pH<2, 4 Deg 28 Days

1 - 1 Liter cubitainer


L_1 - 1 Liter Cubitainer


4 - 40mL VOA vial

; - / < - c

4 Deg C

4 Deg C

4 Deg C

HN03 acidify, 4 Deg C

4 Deg C, HCL to pH<24°C

Total Organic Carbon in Watec-~t>OCs -oi iOatu/L- fa

28 Days' Sulfate in Water

28 Days Chloride in Water

14 Days Alkalinity (bicarbonate) in Water

180 Days Metals in Water by

14 Days VOCs in Water by GC/MS for Low DetectionLimits

V\Tr^f m

8-



Kansas City, KS

ASR Number: 1073 Sample Number: 144 QC Code: Matrix: Water Tag ID: 1073-144-



Location: Columbus ' State: Nebraska



Location Desc: ltV~



Latitude: __ __ __ Sample Collection:


Date

Start OV-/Z&/OI

End / /

Time (24 Hr)

// : 00


1 - 1 Liter amber glass



Liter cubitainer


4 -40mL VOA vial'/L

Preservative Holding TimeH2SO4 to pH<2, 4 Deg 28 Days

Analysis

Total Organic Carbon in Wat

4 Deg C

4 Deg C4 Deg C

HN03 acidify, 4 Deg C4 Deg C, HCL to pH<2

?&14 Days'

28 Days

28 Days

180 Days

14 Days

1dc(u^

Alkalinity (bicarbonate) in

Chloride in WaterSulfate in Water

Metals in Water by ICP (Mfl̂VOCs in Water by GC/MS for Low DetectionLimits "TO

m7^Ci ^cn o~n 3-

8"



Kansas City, KS

ASR Number: 1073 Sample Number: 145 QC Code: Matrix: Water Tag ID: 1073-145-_






Location Desc:





Date

Start

End

Time (24 Hr)

12 PS'/ /


Container

1 - 1 Liter amber glassj - IL flrnfcUxv.1 - 1 Liter cubitainer

_——FT


Liter Cubitainer


4 - 40mL VOA vial

Preservative Holding Time Analysis

H2S04 to pH<2, 4 Deg 28 Days Total Organic Carbon in Wate2? D«yssog

4 Deg C

4 Deg C

4 Deg C


4 Deg C, HCL to pH<2

28 Days

28 Days

14 Days

180 Days

14 Days VOCs in Water by GC/IV/S for Low Detection

TT>S

Sulfate in Water

Chloride in Water

Alkalinity (bicarbonate) in Water

Metals in Water by ICP (ji\r\^ Pf or\lu\ +-

m7*r> H-^2s?-M?O 2.-



Kansas City, KS







Location Desc: U.V—



Latitude: __ __ __ Sample Collection:


Date Time (24 Hr)

Start

End / /


Container

1 - 1 Liter amber glass<j- r L AmiW--V1 - 1 Liter cubitainer


1 - 1 Liter Cubitainer•>—..


4 - 40mL VOA vial- IL

mS~c^2~n=-o u>>—» -+*38*-»i^j

4 Deg C

4 Deg C

4 Deg C



Preservative Holding Time AnalysisH2SO4 to pH<2, 4 Deg 28 Days Total Organic Carbon in W,

23 £tfe/!28 Days

28 Days

14 Days

180 Days

14 Days

~botSulfate in Water

Chloride in Water


Metals in Water by ICP

VOCs in Water by GC/MS^or Lo,wLimits

rvaier

n\ Tc cnM*section



Kansas City, KS







Location Desc: U.\)-(0

External Sample Number: ______


Latitude: __ __ __ SamP|e Collection: Start

Longitude: ____ __ __ End

Date Time (24 Hr)

/ /



1~1 Liter Cubitainer

- 1 Liter Cubitainer

- 1 Liter cubitainer

- 1 Liter Cubitainer

4 -40mL VOA vial

J-

C4 Deg C

4 Deg C

4 Deg C



4'U

,' cwt>-* $$9

Preservative Holding Time AnalysisH2SO4 to pH<2, 4 Deg 28 Days Total Organic Carbon in Watei

28 DfltfS DoC ^u-i Wa^M-14 Days Alkalinity (bicarbonate) in Water28 Days

28 Days

180 Days

14 Days

Chloride in Water

Sulfate in Water

Metals in Water by

VOCs in Water by GCI

Id&ip Limits TDS fi(f/jM\MS for Low Detection

Sample collected by: £<-H<*601*$(J* I

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-—T11-_' UNITED STATES ENVIRONMENTAL PROTECTION AGENCY\ ' ,/

' Pno REGION VII901 NORTH 5TH STREET

KANSAS CITY KANSAS 66101

AUG 0 1 2001

Norm SilerUnion Pacific Railroad Company1416 Dodge Street, Room 930Omaha, NE 68 179-0930

Dear Mr. Siler:

RE: Folder No. 01890-2710th Street SiteColumbus, NE

Enclosed are the field sheets and analytical results for groundwater and air samplescollected by our contractor, CDM Federal Programs, Inc., on railroad property during the week ofApril 24, 2001. The samples were collected as part of a continuation of EPA's in- well strippertreatability study. All samples were analyzed for volatile organic compounds and water qualityparameters.

The groundwater that was sampled from the monitoring wells on railroad property wasused to establish groundwater quality in the area. Therefore, we are providing you informationregarding how the concentrations of compounds detected during the April 2001 sampling eventcompare with EPA standards for groundwater quality. The Safe Drinking Water Act hasestablished Maximum Contaminant Levels (MCLs) for a number of contaminants that areconsidered safe for a drinking water supply. The MCLs for the contaminants of concern at thissite are as follows: tetrachloroethylene (PCE) is 5 micrograms per liter (ug/1), trichloroethylene(TCE) is 5 ug/1, cis-1,2 dichloroethylene (cis-1,2 DCE) is 70 ug/1 and trans-1,2 dichloroethylene(trans-1,2 DCE) is 100 ug/1. Comparison of the contaminants detected in monitoring wells withthe corresponding MCLs are as indicated on the enclosed table titled "MONITORING WELLSRESULTS: 04/24/01." As indicated on this table, all of the detectable concentrations of PCEand TCE are above the MCL of 5 ug/1. Cis-1,2 DCE and trans-1,2 DCE were also detected insome of the monitoring wells but the concentration did not exceed any MCLs.

The EPA collected an air sample of the air generated by one of the in-well strippers to $ Bassess treatment requirements and the ability of the strippers to remove contaminants from the ^ ^groundwater. The results of this analysis are also enclosed. £ to|

viVO

m

RECYCLE^

2

Copies of this correspondence are being furnished to Dr. Brian Zurbuchen of theNebraska Department of Environment Quality and Mr. Jack Daniel of the Nebraska Health andHuman Services System. If you wish to discuss matters related to public or private watersupplies, I suggest that you contact Mr. Daniel at (402) 471-0510. Additionally, Dr. Zurbuchenmay be contacted at (402) 471-6411.

This information is forwarded to you in accordance with provisions of Section 3007(a) ofthe Resource Conservation and Recovery Act of 1980, as amended and Section 104(e) of theComprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended.

If you have any questions or comments, you may contact me at (913) 551-7703.

Sincerely,

Nancy J.Iowa/Nebraska Remedial BranchSuperfund Division m

Enclosures ^ So mi—»-<•

cc: Brian Zurbuchen, NDEQ (w/enclosure) £ gJack Daniel, NHHSS (w/enclosure) g "*Kristian Elirhorn, Union Pacific Railroad o

MW-17AMW-17BMW-17CMW-17D

LEGEND

S Monitoring Well Location

® Treatability Study Well Location

•£ Treatment Well LocationID7*O -cn 5~n 3-

Oooo200 200 400 Feet

10th Street Treatability StudyColumbus, Nebraska

ecology and environment, inc.OVEtHANO PARK. KAH5AS

TDD: S07-0002-006PAN: 1494TSTTXX

Prepared by B. BarronDecember 2000

Base map source: City of Columbus Engineering office. 1995;E 1 E OPS Data. 1999. 2000.

TENTHSTAPR

Figure 3-5: Treatability Study IWS and Monitoring Well Locations





Carbon Dioxide in Water by Field MeasurementCarbon Dioxide rng/L





Hardness in Water by CalculationHardness as CaCO3 . mg/L







Total Dissolved Oxygen in Water by Field MeasurementDissolved Oxygen rng/L

Total Organic Carbon in WaterTotal Orqanic Carbon mq/.L


VOCs in Water by GC/MS for Low Detection LimitsAcetone ug/LBenzene ug/LBromochloromethane ug/L

ug/LBromodichioromethaneBromoformBromomethane2-ButanoneCarbon Disulfide

ug/Lug/Lug/Lug/L

107-

328

72

34.1

0.711

1 U

0.0

296

162434

0.05

7.09

>70

266

15.31

3.52

1.4

1.5

5 U1 U1 U1 U1 U1 U5 U1 U

m

Cr»

ooro

Page 9 of 56



Analysis/ Analyte

Carbon TetrachlorideChlorobenzeneChloroethaneChloroformChloromethane1 ,2-Dibromo-3-ChloropropaneDibromochloromethane1,2-Difaromoethane1,2-Dichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethenecis-1 ,2-Dichloroethenetrans-1 ,2-Dichloroethene1,2-Dichloropropanecis-1 ,3-Dichloropropenetrans-1 ,3-DichloropropeneEthyl Benzene2-HexanoneMethylene Chloride4-Methyl-2-PentanoneStyrene1 , 1 ,2, 2-Tetrachloroetha neTetrachloroetheneToluene1 ,2,4-Trichlorobenzene1,1,1 -Trichloroethane1,1,2-TrichloroethaneTrichloroetheneVinyl Chloridetotal Xylene

Units


107-_

1111111111111121111152511

241111

6311

UUUUUUUUUUUUUU

UUUUUUUUUU

UUUU

UU

m

Page 10 of 56

8*00GO



Analysis / Analyte Units 110- 111-












TDS or Total Dissolved SolidsSolids, total dissolved rng/L






ug/Lug/Lug/L

BenzeneBromochloromethaneBromodichloromethaneBromoformBromomethane2-ButanoneCarbon Disulfide

ug/Lug/Lug/Lug/L

391

89

19.5

0.792

1.1

0.20

394

14401090

410

0

26.6

1.444

0.06

68.2

40224.5

7.17

>70

430

15.32

4.04

1 U

2.0

5 U1 U1 U1 U1 U1 U5 U1 U

11.89

>70

1.99

5.4

2.5

m

T) 3-O LO

8 ft->19.14 CO

5 U1 U1 U1 U1 U1 U5 U1 U

Page 11 of 56



Analysis / Analyte

Carbon TetrachlorideChlorobenzeneChloroethaneChloroformChloromethane1 ,2-Dibromo-3-ChloropropaneDibromochloromethane1,2-Dibromoethane1,2-Dichlorobenzene1 ,3-Dichlorobenzene1,4-Dichlorobenzene1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethenecis-1 ,2-Dichloroethenetrans-1 ,2-Dichloroethene1,2-Dichloropropanecis-1 ,3-Dichloropropenetrans-1 ,3-DichloropropeneEthyl Benzene2-HexanoneMethylene Chloride4-Methyl-2-PentanoneStyrene1,1,2,2-TetrachloroethaneTetrachloroetheneToluene1 ,2,4-Trichlorobenzene1,1,1-Trichloroethane1,1,2-TrichloroethaneTrichloroetheneVinyl Chloridetotal Xylene

Units


110-_

11111111111111

121111152511

381111

38011

UUUUUUUUUUUUUU

UUUUUUUUU

UUUU

UU

111-_1111111111111111111152511

261111

2011

UUUUUUUUUUUUUUUUUUUUUUUUU

UUUU

UU

rn

Page 12 of 56

Activity Number: NJS7CS ASR Number: 1073

Activity Desc: 10th Street site - Redox/Municipal Well GW SamplingRLAB Approved Sample Analysis Results

5/30/2001

Analysis / Analyte Units 142- 143- 144-







Hardness in Water by CalculationHardness as CaCOS mg/L




Sulfate in WaterSulfate mg/L






VOCs in Water by GC/MS for Low Detection LimitsAcetone ug/LBenzene ug/LBromochloromethane ug/LBromodichloromethane ug/L

. Bromoform ug/LBromomethane ug/L2-Butanone ug/LCarbon Disulfide ug/L

360

50.0

1180

394

12.4 U15.3

7.15

239

486

15.77

2.1

2.0

5 U1 U1 U1 U1 U1 U5 U1 U

280

62.4

1149

2.2

425

12.4 U53.8

7.68

285

794

16.34

1.8

0.85

5 U1 U1 U1 U1 U1 U5 U1 U

416

19.9

883

1.3

377

1240754

7.37

117

642

15.64

1.4

1.6

5 U1 U1 U1 U1 U1 U5 U1 U

m

8*00

Page 27 of 56



Analysis/ Analyte

Carbon TetrachlorideChlorobenzeneChloroethaneChloroformChloromethane1 ,2-Dibromo-3-ChloropropaneDibromochloromethane1,2-Dibromoethane1 ,2-Dichlorobenzene1 ,3-Dichlorobenzene1,4-Dichlorobenzene1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethenecis-1 ,2-Dichloroethenetrans-1 ,2-Dichloroethene1,2-Dichloropropanecis-1 ,3-Dichloropropenetrans-1 ,3-DichloropropeneEthyl Benzene2-HexanoneMethylene Chloride4-Methyl-2-PentanoneStyrene1,1,2,2-TetrachloroethaneTetrachloroetheneToluene1 ,2,4-Trichlorobenzene1,1,1-Trichloroethane1,1,2-TrichloroethaneTrichloroetheneVinyl Chloridetotal Xylene

Units


142-_

1111111111111121111152511

111111

9611

UUUUUUUUUUUUUU

UUUUUUUUUU

UUUU

UU

143-_

111111111111111111115251191111

5211

UUUUUUUUUUUUUU

ULIUUUUUUUU

UUUU

UU

144-_

1111111111111121111152511

2801111

25011

UUUUUUUUUUUUUU

UUUUUUUUUU

UUUU

UU

m

Page 28 of 56

8-oo



Analysis / Analyte

Alkalinity (bicarbonate) in WaterAlkalinity, bicarbonate

Chloride in WaterChloride

Conductivity by Field MeasurementConductivity

Dissolved Organic Carbon in WaterDissolved Organic Carbon

Hardness in Water by CalculationHardness as CaCO3

Metals in Water by ICPIronManganese

pH of Water by Field MeasurementPH

Sulfate in WaterSulfate

TDS or Total Dissolved SolidsSolids, total dissolved

Units

mg/L

mg/L

umhos/c

mg/L

mg/L

ug/Lug/L

SU

mg/L

mg/L

145-_

347

54.7

1108

1.5

439

12.4 U111

7.08

215

866

146-_

362

28.1

1050

1.8

324

12.4 U5.40

7.66

200

678

147-_

304

23.8

889

1.2

306

100 U57.7

7.52

148r

550 !

Temperature of Water by Field Measurement {

Temperature

Total Organic Carbon in WaterTotal Organic Carbon

Turbidity of Water by Field MeasurementTurbidity

VOCs in Water by GC/MS for Low DetectionAcetoneBenzeneBromochloromethaneBromodichloromethaneBromoformBromomethane2-ButanoneCarbon DisulfideCarbon TetrachlorideChlorobenzeneChloroethaneChloroformChloromethane1 ,2-Dibromo-3-ChloropropaneDibromochloromethane1,2-Dibromoethane1 ,2-Dichlorobenzene1,3-Dichlorobenzene

Deg C

mg/L

NTU

Limitsug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/L

16.10

• 1.5

1.8


15.5

1.6

1.3


15.3 '((

1.1 !

6.0


m

en §3-Oc/>4^5o,ooCO

Page 29 of 56



Analysis / Analyte

1,4-DichIorobenzene1,1-Dichloroethane1,2-Dichloroethane1,1-Dichloroethenecis-1 ,2-Dichloroethenetrans-1 ,2-Dichloroethene1,2-Dichloropropanecis-1 ,3-Dichloropropenetrans-1 ,3-DichloropropeneEthyl Benzene2-HexanoneMethylene Chloride4-Methyl-2-PentanoneStyrene1 , 1 ,2,2-TetrachloroethaneTetrachloroetheneToluene1 ,2,4-Trichlorobenzene1,1,1-Trichloroethane1 ,1 ,2-TrichloroethaneTrichloroetheneVinyl Chloridetotal Xylene

Units

ug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/Lug/L

145-_

111111111152511

311111

3911

UUUU

UUUUUUUUUU

UUUU

UU

146-_

111121111152511

14111

' 1140

11

UUUU

UUUUUUUUUU

UUUU

UU

147-_

111111111152511

201111

13011

UUUU

UUUUUUUUUU

UUUU

UU

m

Page 30 of 56

00VO

flPR.30.2001 9=50fiM CDM FEDERfiL PROGRRMS NO.323 P.3


Kansas City, KS

ASR Number: 1073 Sampla Number: 107 QC Code: _ Matrix: Water Tag ID: 1073-107-

Aotivity Number; NJS7CS Activity Leader: Swyers, NancyActivity Deso: 10th Street site - Redox/Munioipal Well GW Sampling

Location: Columbus State: NebraskaSuperfund Name: 10TH STREET SITE - Site Evaluation/Disposition

Type: SupsrfundSite IP: 07CS Sfta OU: 00


Expected Cone; Circle One: Low Medium High Date!3*"̂ f

Latitude: " Sample Collection; Start </ -h^f ff>(

Longitude: End / /

Time (24

// ••&.

—— • ——

Hr)

Laboratory Analyses;Container Preservative Holding Time Analysis

1 -1 Liter amber glass H2S04 to pH<2. 4 Dag 28 Days Total Organic Carbon in WaterC

cubTtHT -̂i-fcte1 - 1 Liter Cubitainer 4 Deg C1 • 1 Liter Cubitainer 4 Deg C

~C

C14 Days Alkalinity (bicarbonate! in Water28 Days Chloride in Water28"Days—Mfate in Wgtaf- *

1 - 1 Liter Cubitainer HN03 acidify, 4 Deg C 180 Daya /Metals in Water by ICP (/flfl |? £:4 - 40mL VGA vial 4 Deg C, HCL to pH<2 14 Dayshf VOCs In Water by GC/MS fqr Low Detection

. I |_|fVl{tC , S


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flPR.30.2001 9:51flM CDM FEDERflL PROGRflMS NO.323 P.6


Kansas City, KS

ASR Number! 1073 Sample Number: 110 QC Code; _ Matrix: Water Tag ID: 1073-110-

Actlvlty Number: NJS7CS Activity Leader: Swyers, NancyActivity Desc: 10th Street site - Recfox/Munlcipgl Well GW Sampling

Location; Columbus State: NebraskaSuperfund Name: 10TH STREET SITE - Site Evaluation/Disposition

Type; SuperfundSite ID: 07CS Site OU: 00

Location Desc: M it/-jcl&>

External Sample Number;

Expected Cor>c: Circle One: Low Medium High DateLatitude: Sample Collection: Start Lf /p;/of

Longitude: End / /

Time (24 Hrl

)0 '.<-fo

——— ' ——

Laboratory Analyses;Container Preservative Holding Time Analysis

1 • 1 Liter amber glass H2S04 to pH<2. 4 Deg 28 Days Total Organic Carbon In WaterC

Nitroge•Sulfate

tester—1—1 LUai LjUiLdiifBT——4 Deg C—;—————————2U"LJ39fl - 1 Liter Cuhitainer 4 Deg C 2B Days Chloride in Water

itjl • 1 Liter Cubitainer 4 Deg C 14 Days Alkalinity (bicarbonate) in Water

1 Liter Cubitainer HN03 acidify, 4 Deg C 1BO Days Metals in Water by ICP4 Deg C, HCLtopH<2

bcgC,

4 - 40mL VOA viali-tl:

14 Days VOCs in Water^y GC/MS for Low Detection

Sample collected by: Jb - K/a^

RPR.30.2001 9= 51PM CDM FEDERRL PROGRAMS NO. 323 P. 7


Kansas City, KS

ASfl Number: 1073 Sample Number: 111 QC Code: _ Matrix; Water Tag ID; 1073-111-

Activity Number: NJS7CS Activity Leader; Swyers, NancyActivity Desc: 1 0th Street site - Redox/Mpnicipal Well GW Sampling

Location; Columbus State: NebraskaSuperfund Name: 1 0TH STREET SITE - Sito Evaluation/Disposition

Typa: SuperfundSite ID: 07CS Site OU: 00

——————————————————————————————————— 1 ————————————————————————————————— _ —— __ ———————

Location Desc; MU*'*'/<7C


Expected Cone; Circle One; Low Medium High Data

Latitude; Sample Collection: Start V /*•?/»/

Longitude: End / /

Time (24 Hr)

m >.et>,


1 • 1 Liter amber glass H2S04 to pH<2, 4 Dag 28 Days Total Organic Carbon in WaterC

1 - 1 Liter Cubitainer 4 Deg C 14 Days Alkalinity (bicarbonate) in Water

1 - 1 Liter Cuhitainer 4 Deg C 28 Days Chloride In Water1 • 1 Liter Cubitainer HN03 acidify, 4 Deg C 180 Days /Metals In Water by ICP4 • 40mL VOA vial 4 Deg C, HCL to pH<2 14 Days/ VOCs in Water by GC/MS for Low Detection

Limits

*(fl\A \

Sample Comments:

p>H i

- MT

rn


o "o -*vo


Kansas City, KS

ASR Number: 1073 Sample Number: 142 QC Code: _ Matrix: Water Tag ID: 1073-142-_






Location Desc: K.\/- i


Container

1 - 1 Liter amber glass^ IL amb&*~

£1 - 1 Liter cubitainer




4 - 40mL VOA vial

1 (L


H2SO4 to pH<2, 4 Deg 28 Days Total Organic Carbon in WaterC X -v. V *•

4 Deg C

4 Deg C4 Deg C

28 Days

28 Days

14 Days

Orgom't,Sulfate in Water

Chloride in Water

Alkalinity (bicarbonate) i/i Water

HN03 acidify, 4 Deg C 180 Days Metals in Water by ICp(jMn£ ft Of! li/i ^\ +

4 Deg C, HCL to pH<2 14 Days VOCs in Water by GC/MS for Low DetectionLimits


m

Expected Cone: Circle One:

Latitude:

Longitude:


Low Medium High

Sample Collection: Start 0

End

Date

^itQiOii i

Time (24 Hr)

<?*> : <?t>

u>

^


Kansas City, KS







Location Desc: U-\/-3>





Date

Start Qif-l^lO)

End / /

Time (24 Hr)

10 : 00


Container

1 - 1 Liter amber glassi — / L CtfKViwx--

"1 - 1 Liter cubitainer 4 Deg C

CombiAJL-P""1 Liter Cubitainer 4 Deg c

L_1 - 1 Liter Cubitainer 4 Deg C

Preservative Holding Time

H2S04 to pH<2, 4 Deg 28 DaysZ&28 Days'

28 Days

14 Days

Analysis

Total Organic Carbon in7>00

Sulfate in WaterChloride in Water


Watefr^ jx

1 - 1 Liter Cubitainer HN03 acidify, 4 Deg C 180 Days Metals in Water by ICP/Mn^R*Ofl |ijj

4 - 40mL VOA vial/

4 Deg C, HCL to pH<2 14 Days VOCs in Water by GC/MS for Low DetectionLimits

m

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Kansas City, KS




Location: Columbus ' State: Nebraska

Superfund Name: 10TH STREET SITE - Site Evaluation/Disposition


Location Desc: U.V" Q




Longitude:

Date Time (24 Hr)

Start OV- lift 101 11 : OO

End / / :

10th S

treetEKCSFO

l 40095i

i

Holding Time Analysis

28 Days Total Organic Carbon in Wat

Laboratory Analyses:Container Preservative

1 - 1 Liter amber glass H2SO4 to pH < 2, 4 Deg

1 - 1 Liter Cubitainer 4 Deg C 14 Days Alkalinity (bicarbonate) in

4 Deg C 28 Days Chloride in Water

4 Deg C 28 Days Sulfate in Water

1 - 1 Liter Cubitainer HN03 acidify, 4 Deg C 180 Days Metals in Water by ICP (M/1^ froK)(if)+-

14 Days VOCs in Water by GC/MS for Low Detection


Liter cubitainer




Kansas City, KS







Location Desc:

Expected Cone:

Latitude:

Longitude:

kv-<rExternal Sample Number:

Circle One: Low Medium High Date

Sample Collection: Start &^/Z&/O/

End / /

m7^Ci -in 5Time (24 Hr) -p ?O en

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1 - 1 Liter amber glassI - IL fl/nfcu^v1 - 1 Liter cubitainer

1 Liter Cubitainer

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4 - 40mL VOA vial

Sample Comments:

Preservative

H2S04 to pH<2, 4 Degc Hz SO 44 Deg C

4 Deg C

4 Deg C



Holding Time Analysis

28 Days Total Organic Carbon in Wateq2V£w$ DOC sw tVaZZ'i/flj28 Days Sulfate in Water \^



180 Days Metals in Water by ICP ni\f\t ff

14 Days VOCs in Water by GC/MS for LowLimits TT>$

4- /-/,Detection



Kansas City, KS







Location Desc: ic.V-'L*

External Sample Number: ______


Latitude: __ __ __ SamP|e Collection: Start

Longitude: _____ ___ ___ End

Date Time (24 Hr)

/ /


1 - 1 Liter amber glass H2S04 to pH<2, 4 Deg 28 Days Total Organic Carbon in Waiter- i L A/H ̂ ^

1 - 1 Liter cubitainerCubitainer

4 Deg C4 Deg C

1 - 1 Liter Cubitainer 4 Deg C

1 - 1 Liter Cubitainer HN03 acidify, 4 Deg C

28 Days Sulfate in Water



1 80 Days Metals in Water by ICP

4 - 40rnL VOA vial 4 Deg C, HCL to pH<2Tc QnM+"_ . . . F-N _ j_ ̂ j. • _

r^&

VOCs in Water by GC/MS for Low QetectionLimits

m



Kansas City, KS

ASR Number: 1073 Sample Number: 147 QC Code: _ Matrix: Water Tag ID: 1073-147-_






Location Desc: l£-\/-'(i?


Expected Cone: Circle One: Low Medium High Date

Latitude: Sample Collection: Start o(f./i£/o(

Longitude: End / /

Time (24 Hr)

1?: IS"




H2S04 to pH<2, 4 Deg 28 Days Total Organic Carbon in Wate



1 - 1 Liter cubitainer


4 - 40mL VOA vial

J ^ » L

4 Deg C

4 Deg C

4 Deg C

HN03 acidify, 4 Deg C4 Deg C, HCL to pH<2

4"

14 Days

28 Days

28 Days

180 Days

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DoCAlkalinity (bicarbonate) inChloride in Water

Sulfate in Water ,

Metals in Water by ICP^Mfl ^ R Ohl

VOCs in Water by GCVMS for Lpw DetectionLimits Ti

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