letter from daralene pondo, black and veatch to erik … · 2020. 11. 29. · bench-scale test are...

17
[^ BLACK&VEATCH ^^^^ building a \/\/of|() of difference-' EC3ERGV WATER fNFOfllMATION GOVERNMENT US EPA Region 4 Sapp Battery OU2 Remedial Design Task Order 005-RDRD-0417 BVSPC Project No. 049005 DCN 49005-127-04-A-00638R0 October 28, 2010 Mr. Erik Spalvins Contract Officer's Representative US Environmental Protection Agency, Region 4 61 Forsyth Street, 11* Floor Atlanta, Georgia 30303 Subject: Treatability Testing Report, Revision 0 Sapp Battery Salvage NPL Site Cottondale, Florida Dear Mr. Spalvins: Black & Veatch Special Projects Corp. (Black & Veatch) is pleased to submit for your review and comment are two copies and 2 CDs ofthe referenced document. This document has prepared by our subcontractor, Shaw Environmental, Inc. and reviewed by Black & Veatch. The report provides soil analytical results for total metals and SPLP analyses. Soil acidity testing and the results of a preliminary reagent demand bench-scale test are also provided. Should you have any questions or require additional information, please contact me by telephone at (813) 207-7905 or by email at [email protected]. Sincerely, BLACK & VEATCH Special Projects Corp. Daralene L. Pondo, R.E.M. Task Order Manager Enclosures GG: Michael Allen, EPA CO, letter/CD Charles Swan, EPA PO, letter/CD Scotti Bozeman, BVSPC, letter only Blad{& Veatch Special Projects Corp. • 1120 Sanctuary Parkway, Suite 200 AJpharetta, GA 30009 USA Telephone: 770-751-7517 • Fax: 770-751-8322

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Page 1: LETTER FROM DARALENE PONDO, BLACK AND VEATCH TO ERIK … · 2020. 11. 29. · bench-scale test are also provided. Should you have any questions or require additional information,

[ ^ BLACK&VEATCH ^ ^ ^ ^ building a \/\/of|() of difference-'

EC3ERGV WATER fNFOfllMATION GOVERNMENT

US EPA Region 4 Sapp Battery OU2 Remedial Design Task Order 005-RDRD-0417

BVSPC Project No. 049005 DCN 49005-127-04-A-00638R0

October 28, 2010

Mr. Erik Spalvins Contract Officer's Representative US Environmental Protection Agency, Region 4 61 Forsyth Street, 11* Floor Atlanta, Georgia 30303

Subject: Treatability Testing Report, Revision 0 Sapp Battery Salvage NPL Site Cottondale, Florida

Dear Mr. Spalvins:

Black & Veatch Special Projects Corp. (Black & Veatch) is pleased to submit for your review and comment are two copies and 2 CDs ofthe referenced document.

This document has prepared by our subcontractor, Shaw Environmental, Inc. and reviewed by Black & Veatch. The report provides soil analytical results for total metals and SPLP analyses. Soil acidity testing and the results of a preliminary reagent demand bench-scale test are also provided.

Should you have any questions or require additional information, please contact me by telephone at (813) 207-7905 or by email at [email protected].

Sincerely, B L A C K & V E A T C H Special Projects Corp.

Daralene L. Pondo, R.E.M. Task Order Manager

Enclosures

GG: Michael Allen, EPA CO, letter/CD Charles Swan, EPA PO, letter/CD Scotti Bozeman, BVSPC, letter only

Blad{& Veatch Special Projects Corp. • 1120 Sanctuary Parkway, Suite 200 • AJpharetta, GA 30009 USA • Telephone: 770-751-7517 • Fax: 770-751-8322

Page 2: LETTER FROM DARALENE PONDO, BLACK AND VEATCH TO ERIK … · 2020. 11. 29. · bench-scale test are also provided. Should you have any questions or require additional information,

.a S h a w ® Shaw EnvironmentaL Inc.

Shaw Environmental, Inc. Technology Development Laboratory

304 Directors Drive Knoxville, TN 37923-4700

865.690.3211 Fax 865.694.9573

To: Daralene Pondo, Black and Veatch

From: Ernie Stine, Ph.D and Gregory Bennett

Date: October 21, 2010

Subject: Sapp Battery NPL Site Soil Acidity, Total and Leachable Metals Testing Report - Revision 0

L Introduction Black & Veatch personnel, under the direction of the EPA Region 4 Response Action Contract

(RAC) II, Task Order 005-RDRD-0417, collected soil and groundwater samples from the Sapp

Battery NPL Site in Cottondale, Jackson County, Florida in October 2009. Black & Veatch, with

consent from EPA, subcontracted Shaw Environmental Inc.'s (Shaw) Technology Development

Laboratory (TDL) in Knoxville, Tennessee to perfonn a bench-scale treatability study on these

samples to determine the metals content, acidity of various soil sediments, and to determine tiie

amount of reagent needed to raise the groundwater pH to levels between 8 and 9 Standard Units

(SUs). Raising die pH in the groundwater at the Site is under consideration as a remedial altemative

to reduce the metals concentrations in the groundwater. This testing report provides the data and

evaluation for the bench-scale treatability study performed by Shaw's TDL.

//. Sample Description Thirty-five samples of soil and groundwater were received at Shaw's TDL from the Sapp Site

between October 12 and October 20, 2009. Attachment 1 provides the traffic report of receipt

dates and sample identifications. The testing ofthe samples was put on hold by EPA in February

2010. The samples were archived and stored until EPA decided to proceed with testing, which

happened in August 2010. Several of the original proposed analyses were eliminated at the

request of the EPA. Consequently, only eight of the 35 samples were tested. The samples

selected for analyses were chosen based on the lead concentrations detected in the groundwater

at these locations across the Site. The remaining sample materials not tested are being disposed

of by Shaw's TDL in accordance with all applicable regulations.

Two subsurface soil samples, SBEW30 collected at 32 feet below land surface (ft bis) and SBEW32

collected at 30 ft bis were analyzed for total lead; the remaining six soil samples were analyzed for

the following:

Page 1 of5

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.a S h a w ® Shaw EnvironmentaL Inc.

Shaw Environmental, Inc. Technology Development Laboratory

304 Directors Drive Knoxville, TN 37923-4700

865.690.3211 Fax 865.694.9573

• acidity by Standard Method (SM) 2310,18^' Edition,

• total aluminum, arsenic, cadmium, iron, lead, manganese, nickel, and vanadium by EPA SW-846 Method 6010/6020; and by

• Synthetic Precipitation Leaching Procedure (SPLP) for leachable aluminum, arsenic, cadmium, iron, lead, manganese, nickel, and vanadium (SW-846 Method 1312/6010).

Table 1 shows the samples tiiat were tested, the analyses performed, and the respective received and analyses dates.

Table 1 Sapp Battery NPL Site

Sample Analyses

Date Received

10/12/09

10/12/09

10/14/09

10/14/09

10/14/09

10/14/09

10/20/09

10/20/09

Sample ID / Location

TSOl SB04/ near EW14D

TS01 SB02/ near EW08D

TS04_Silty Clay/ Injection Area B

TS03_Sand / Injection Area B

TS05_Clay / Injection Area B

SB01 (Sand 40 -60') / near EW09D

SBEW30 (32')

SBEW32(32')

TDL ID

SEK 3999

SEK4009

SEK 4032

SEK 4033

SEK 4034

SEK 4040

SEK 4051

SEK 4052

Analyses

Acidity Total Metals SPLP Metals Acidity Total Metals SPLP Metals Acidity Total Metals SPLP Metals Acidity Total Metals SPLP Metals Acidity Total Metals SPLP Metals Acidity Total Metals SPLP Metals

Total Lead

Total Lead

Preparation Date

NA 08/10/10 09/07/10 NA 08/10/10 09/07/10 NA 08/10/10 09/07/10 NA 08/10/10 09/07/10 NA 08/10/10 09/07/10 NA 08/10/10 09/07/10

08/11/10

08/11/10

Analyses Date

08/16/10 08/11-12/10 09/08-09/10 08/16/10 08/11-12/10 09/08-09/10 08/17/10 08/11-12/10 09/08-09-10 08/17/10 08/11-12/10 09/08-09/10 08/17/10 08/11-12/10 09/08/10 08/16/10 08/11-12/10 09/08-09-10

08/12/10

08/12/10

///. Analytical Results/Methodology Each smnple was received, logged in and given a unique sample ID number at Shaw's TDL.

Samples selected for analyses were homogenized and aliquoted. Analyses followed the

prescribed methods from SM 2310, SW-846 6010/6020 and SW-846 1312/6010 Hsted previously.

Table 2 provides the results of the total metals analyses. The results indicate that all of the

Page 2 of 5

Page 4: LETTER FROM DARALENE PONDO, BLACK AND VEATCH TO ERIK … · 2020. 11. 29. · bench-scale test are also provided. Should you have any questions or require additional information,

.a S h a w ® Shaw EnvironmentaL Inc.

Shaw Environmental, Inc. Technology Development Laboratory

304 Directors Drive Knoxville, TN 37923-4700

865.690.3211 Fax 865.694.9573

constituents of concem (COC) total metal concentrations were below the Florida Department of

Environmental Protection's (FDEP's) commercial/industrial direct exposure soil cleanup target

levels (SCTLs).

Table 2 Sapp Battery NPL Site

Total Metals Analyses Results

Sample Number

TS01_SB04

TS01_SB02

TS04

TS03

TS05

SB01

SBEW30 (32')'

SBEW32 (32')'

Commercial /Industrial

SCTL^

Total Metals Concentrations by SW-846 6010/6020 (mg/kg dry weight basis)

Aluminum

9,040

5,480

836

1,010

2,830

845

N/A

N/A

*

Arsenic

<0.336

5.28

0.376

<0.346

0.810

<0.342

N/A

N/A

12

Cadmium

<0.112

0.214

<0.108

<0.115

<0.119

0.0743

N/A

N/A

1,700

Iron

393

23,700

520

180

10,900

457

N/A

N/A

*

Lead

1.24

13.9

0.884

0.517

4.45

0.473

2.85

2.93

1,400

Nickel

1.08

15.4

<0.861

<0.924

3.47

0.958

N/A

N/A

35,000

Manganese

2.65

138

1.40

0.98

7.04

29.0

N/A

N/A

43,000

Vanadium

7.30

49.4

8.14

5.41

47.7

4.54

N/A

N/A

10,000

% Solid

87.4

81.2

86.4

85.4

82.5

87.8

76.3

87.7

^ Analyzed for total lead only ^ - Bold values exceed the commercial/iudustrial direct exposiire soil cleanup target level (SCTL) per Table EE of F.A.C.

Chapter 62-777, April 2005 (FDEP). * - Contaminant is not a health concern for this exposure scenario. mg/kg - milligrams per kilogram

The same samples were analyzed for SPLP and the results are presented in Table 3. For

leachability to groundwater, lead is the primary COC and has an EPA maximum contaminant

level (MCL) and a Florida groundwater CTL (GCTL) of 0.015 milligrams per liter (mg/L). As

seen from Table 3, all analyzed SPLP lead concentrations were less than the MCL/GCTL at

<0.011 mg/L. Three samples, TS01_SB04, TS01_SB02, and SBOl had SPLP leachate

concentrations for aluminum greater than the GCTL. Sample TS01_SB_02 also leached iron and

manganese in concentrations greater than their respective GCTLs. These three GCTL values are

secondary EPA MCLs. That means, they are based on aesthetic considerations and are not

human health-based. The soil samples with the highest total aluminum, iron and manganese

Page 3 of 5

Page 5: LETTER FROM DARALENE PONDO, BLACK AND VEATCH TO ERIK … · 2020. 11. 29. · bench-scale test are also provided. Should you have any questions or require additional information,

.a S h a w ® Shaw EnvironmentaL Inc.

Shaw Environmental, Inc. Technology Development Laboratory

304 Directors Drive Knoxville, TN 37923-4700

865.690.3211 Fax 865.694.9573

concentrations (TS01_SB04, TS01_SB02) also leached SPLP concentrations in exceedance of

the secondary MCLs. Sample SBOl was different from all other samples investigated. All the

other samples tested had acidic SPLP leachates ranging in pH from 4.1 to 5.2 SUs; however,

SBOl had a more alkaline leachate pH value of 7.8 SUs. This sample was composited from two

white loose fine-grain sand lenses in the boring; indicative of a limestone sediment interval. In

summary, all the soil samples analyzed were below their respective FDEP commercial/industrial

SCTL and leached lead at less than the primary MCL/GCTL. Three samples leached aluminum

and one sample leached iron and manganese above their respective MCL/ secondary GCTL.

Table 3 Sapp Battery NPL Site

SPLP Metals Analyses Results

Sample Number

TS01_SB04

TS01_SB02

TS04

TS03

TS05

SB01

GCTL

SPLP Analyses by SW-846 3012/6010 (mg/L)

Aluminum

1.14

9.34

0.110

<0.056

<0.056

0.211

0.2

Arsenic

<0.011

<0.011

<0.011

<0.011

<0.011

<0.011

0.010

Cadmium

<o.ao3

<0.003

<0.003

<0.003

<0.003

<0.003

0.005

Iron

0.089

3.75

0.059

<0.050

0.051

0.154

0.3

Lead

<0.011

<0.011

<0.011

<0.011

<0.011

<0.011

0.015

Nickel

<0.011

<0.011

<0.011

<0.011

<0.011

<0.011

0.100

Manganese

<0.016

0.065

<0.016

<0.016

<0.016

<0.016

0.050

Vanadium

<0.011

0.015

<0.011

<0.011

<0.011

<0.011

0.049

pH

4.1

5.2

4.7

4.8

4.8

7.8

NA

Bold values exceed the GCTL per Table I of F.A.C. Chapter 62-777, April 2005 (FDEP) and EPA's secondaiy MCL.

In addition to chemical testing, bench-scale treatability testing was performed on the samples to

determine the amount of alkaline reagent that would be required to raise the groundwater pH to 8

or 9 SUs. Data show that at locations at the Site where there are naturally occurring limestone

deposits, the groundwater in these areas is alkaline, e.g., pH ranges from >7 to about >8.5 SUs

and metals concentrations are reduced. A previous remedial alternative considered for the

groundwater remedy at the Site was to extract higher pH groundwater (e.g., groundwater in

Page 4 of5

Page 6: LETTER FROM DARALENE PONDO, BLACK AND VEATCH TO ERIK … · 2020. 11. 29. · bench-scale test are also provided. Should you have any questions or require additional information,

.a S h a w ® Shaw EnvironmentaL Inc.

Shaw Environmental, Inc. Technology Development Laboratory

304 Directors Drive Knoxville, TN 37923-4700

865.690.3211 Fax 865.694.9573

contact with limestone in the Floridan aquifer) and inject into the more acidic groundwater in the

intermediate aquifer zones at the Site. Based on these observations, a remedial option under

consideration is to limit the mobility of soluble lead and other metals by injecting an alkaline

solution to raise the groundwater pH. Table 4 shows the results ofthe bench-scale titration tests.

The soil samples were mixed with Site groundwater at 50 grams of soil in 50 grams of

groundwater. The resultant pH was recorded. As seen in Table 4, all soil pH values, except for

SBOl, were acidic (pH 4.0 to 5.1 SUs). The soil-groundwater pH values were similar to the

SPLP pH values.

Table 4 Sapp Battery NPL Site

Acidity Analyses Results

Sample Number

TS01_SB04

TS01_SB02

TS04

TS03

TS05

SB01

Acidity meq NaOH/kg Soil

Titrated topHS

31.7

12.0

7.90

8.62

14.6

0.00

Titrated t o p H 9

38.4

16.6

9.14

9.83

18.1

1.04

Acidity lbs. CaCOs/Ton Soil

Titrated to pH8

3.18

1.20

0.79

0.86

1.47

0.00

Titrated t o p H 9

3.85

1.66

0.92

0.99

1.81

0.10

Titration Curves

Figures 1A/B

Figures 2A/B

Figures 3A/B

Figures 4A/B

Figures 5A/B

Figures 6A/B

Initial pH of 50 grams soil in

50 grams groundwater

4.0

5.1

4.4

4.4

4.9

8.1

Titrations were conducted to estimate the amount of alkaline reagent in groundwater that would

need to be added to the acidic site soil to raise the pH to values between 8 and 9 SUs. Each soil

sample was titrated using a sodium hydroxide (NaOH) solution. The equivalent quantity of

calcium carbonate (CaCOs) addition was calculated for each NaOH addition. Table 4 presents

the "milliequivalents (meq) of NaOH per kilogram (kg) of soil" and the equivalent "pounds (lbs.)

CaCOs per ton of soil" needed to increase the soil pH to either 8 or 9 SUs. The meq NaOH/ kg

of soil ranged from 0.00 to 38.4, which equates to a range between 0.10 to 3.85 Ibs./ton of

CaCOs needed to increase the pH to 8 to 9 SUs. The bench-scale study titration curves are

shown as Figures lA/B - 6A/B.

Page 5 of 5

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Figures

Page 8: LETTER FROM DARALENE PONDO, BLACK AND VEATCH TO ERIK … · 2020. 11. 29. · bench-scale test are also provided. Should you have any questions or require additional information,

Figures 1A and 1B Acidity Titration Curves

Sample TS01_SB04

11 10 -9 -

^ 7 -S e-

5 -4 -

q

Acidity Titration Curve for Sample TS01/SB04

_ , ^ — ^ ^ ^.^--^

^^^^-^ ^ ^

^ ^ ^ ^ - ^ ^ ^ ^ ^ - ^ ^

y ^

0 10.0 20.0 30.0 40.0 50.0 60.0

Acidity (meq NaOH/kg Soil)

3

X

0.0

Acidity Titration Curve for Sample TS01/SB04

1.0 2.0 3.0 4.0 5.0 6.0

Acidity (Ib CaCOa/Ton Soil)

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Figures 2A and 2B Acidity Titration Curves

Sample TS01_SB02

3 i/i X 2.

12 11 10 9 8 7 6 5 4

0.0

Acidity Titration Curve for Sample TS01/SB02

10.0 20.0 30.0 40.0

Acidity (meq NaOH/kg Soil) 50.0

X a.

\Z -11 -10 -

s 7 -6 -5 -

Acidity Titration Curve for Sample TS01/SB02

^ _ ^ _ _ _ _ _ ,

^ ^ ^ ^ ^ - — — ' ^ ^^^-^

J ^^^^^

^ - - ^ 4 4 \ \ \ \ 1

Q.0 1.0 2.0 3.0 4.0 5.0

Acidity (Ib CaC03/ton Soil)

Page 10: LETTER FROM DARALENE PONDO, BLACK AND VEATCH TO ERIK … · 2020. 11. 29. · bench-scale test are also provided. Should you have any questions or require additional information,

Figures 3A and 3B Acidity Titration Curves

Sample TS04

3

X

Acidity Titration Curve for Sample TS04

12 11 10 9 8 7 6 5 4

5.0 10.0 15.0 20.0

Acidity (meq NaOH/kg Soil)

Acidity Titration Curve for Sample TS04

3

X Q.

12 11 10 9 $ 7 6 5 4

Q..Q 0.5 1.0 1.5 2.0

Acidity (Ib CaCOs/ton Soil)

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Figures 4A and 4B Acidi ty Titration Curves

Sample TS03

3 (/i X Q.

Acidity Titration Curve for Sample TS03

12 11 10 9 $ 7 6 5 4

0.0 5.0 10.0 15.0 20.0 Acidity (meq NaOH/kg Soil)

Acidity Titration Curve for Sample TS03

3 -id X CL

12 11 10 9 e 7 6 5 4

0.0 0.5 1.0 1.5 2.0 Acidity (meq NaOH/kg Soil)

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Figures 5A and 5B Acidi ty Titration Curves

Sample TS05

12 11 10

9 8 7 6 5 4

0.0

Acidity Titration Curve for Sample TS05

10.0 20.0 30.0

Acidity (meq NaOH/kg Soil)

40.0

X a.

12

11

10

9

S

7

6

5

4

0.0

Acidity Titration Curve for Sample TS05

1.0 2.Q

Acidity (Ib CaCOs/ton Soil)

4.0

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Figures 6A and 6B Acidity Titration Curves

Sample SBD1

3 -id X Q.

12 11 10 9 e 7 6 5 4

M

Acidity Titration Curve for Sample SB01

a,o 4.0 6.0 a

Acidity (meq NaOH/kg Soil)

10.0

3

X Q.

12 11 10 9 S 7 6 5 4

0#

Acidity Titration Curve for Sample SBOl

0.4 0.6 0

Acidity (meq NaOH/kg Soil)

1.0

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ATTACHMENT

Page 15: LETTER FROM DARALENE PONDO, BLACK AND VEATCH TO ERIK … · 2020. 11. 29. · bench-scale test are also provided. Should you have any questions or require additional information,

Attachment 1 Sample Traffic Report

Shaw TDL ID

SEK 3999

SEK 4000

SEK 4001

SEK 4002

SEK 4003

SEK 4004

SEK 4005

SEK 4006

SEK 4007

SEK 4008

SEK 4009

SEK 4010

Client Sample

ID

TSOl

TSOl

TSOl

EW34D

PMW02

PMW02

EW34D

EW34D

EW34D

IWOIB

TSOl

TSOl

Date Sampled

10/9/2009

10/9/2009

10/9/2009

10/8/2009

10/8/2009

10/8/2009

10/8/2009

10/8/2009

10/12/2009

10/12/2009

10/12/2009

10/12/2009

Time

1100

1100

1100

320

330

335

1200

1205

1300

1400

Type of Sample {comp./

grab)

COMP

COMP

GRAB

GRAB

GRAB

GRAB

GRAB

GRAB

GRAB

GRAB

COMP

GRAB

Soil Matrix

Soil

Soil

Soil

Soil

Soil

Soil

Soil

Soil

Water

Water

Soil

Soil

Sampling Station Location

TSOl {SB04)

TSOl (SB04)

TSOl (EW35D @ 60')

EW34D @ 18'

PMW02 @ 29'

PMW02 @ 66'

EW34D @ 60'

EW34D @ 76'

TS03/TS04/TS05

TS03/TS04/TS05

SB02

SB02 {61'}

A-1

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Sample Traffic Report (cont'd)

Shaw TDL ID

SEK 4011

SEK 4012

SEK 4013

SEK 4014

SEK 4015

SEK 4016

SEK 4017

SEK 4026

SEK 4027

SEK 4028

SEK 4029

Client Sample

ID

TSOl

TS07

TS06

TSOl

EW37D

PI\/IW07

TSOl

PMWOSA

PMWOSB

EW15D

IWOIA

Date Sampled

10/12/2009

10/10/2009

10/11/2009

10/12/2009

10/10/2009

10/11/2009

10/12/2009

10/13/2009

10/13/2009

10/13/2009

10/13/2009

Time

1400

1600

1200

1300

1700

1630

1300

850

900

1400

700

Type of Sample (comp./

grab)

GRAB

COMP

COMP

GRAB

COMP

GRAB

GRAB

GRAB

GRAB

GRAB

GRAB

Soil Matrix

Soil

Soil

Soil

Soil

Soil

Soil

Soil

Water

Water

Water

Water

Sampling Station Location

SB02 (50')

SBOl (40-60')

EW36D (30-40')

SB04 (75')

EW37D (23-28')

PMW07 (60')

TSOl - EW35D (62')

TS02

TS02

TS03/TS04/TS05

TS03AS04/TS05

A-2

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Sample Traffic Report (cont'd.)

Shaw TDL ID

SEK 4030

SEK 4031

SEK 4032

SEK 4033

SEK 4034

SEK 4035

SEK 4036

SEK 4037

SEK 4039

SEK 4040

SEK 4051

SEK 4052

Client Sample

ID

TSOl

TSOl

TS04

TS03

TS05

TS02

TS07

EW15D

EW18D

SBOl

SBEW30

SBEW32

Date Sampled

10/13/2009

10/13/2009

10/10/2009

10/10/2009

10/10/2009

10/12/2009

10/14/2009

10/14/2009

10/15/2009

10/10/2009

10/19/2009

10/19/2009

Time

1045

1055

1000

1000

1000

1100

900

1100

745

1600

1020

1020

Type of Sample {comp./

grab)

GRAB

GRAB

COMP

COMP

COMP

COMP

GRAB

GRAB

GRAB

COMP

GRAB

GRAB

Soil Matrix

Water

Water

Soil

Soil

Soil

Soil

Water

Water

Water

Soil

Soil

Soil

Sampling Station Location

TSOl - EW8D

TSOl - EW14D

Silty/Sandy Clay zones from EW34D, PMW cluster in area

B,andSB05 Sand zones from

EW34D, PMW cluster in area B,

and SB05 Clay zones from EW34D, PMW

cluster in area B, and SB05

Composite of PMW cluster in area A

TS07 (SBOl EW-9D)

EW15D

EW18D

SBOl (40-60') Sand lens compoosite

Soil Boring 5 feet S. of EW30@32'

Soil Boring 5 feet S. of EW32@32'

A-3