# Perfluorooctanoic Acid (PFOA)

**Site Related Environmental**

**Assessment Program**

**3M and Dyneon LLC**

Decatur, Alabama

Quarterly Status Report

January 1, 2011 to March 31, 2011

11P-0094-v1-1 

# 3M Company

St. Paul, Minnesota

®

# Perfluoro octanoi c Acid (PFOA) Site Related

Environmental Assessment Program

3M Decatur, Alabama Site

Quarterly Status Report

January 1 , 2011 to March 31 , 20 11

Prepared for



# 3M Company and Dyneon LLC

By



# WESTON SOLUTIONS, INC.

West Chest er, Pennsylvania 19380

W.O. No. 02181.129. 118 .0001

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# i 

# TABLE OF CONTENTS

Section Page

1. BACKGROUND

............................................................................................................ 1-1

2. SUMMARY OF ACTIVITIE S ..................................................................................... 2-1



# ATTACHMENTS

Attachment Title

1 GROUNDWATE R SAMPLING TECHNICAL PROGRESS R EPORT

2 SOIL AND SEDIMENT SAMPLING TECHNICAL PROGRESS

REPORT

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# 1-1 

# 1. BACKGROUND

In accordance with the Phase 3 Work Plan for Sampling Environmental Media

( WESTON, 2009 ) and the Memorandum of Understanding ( MOU ) ( 3M, 2004) with

EPA , 3M and Dyneon LLC are undertaking a Perfluorooctanoic Acid (PFOA) Site

Related Environmental Monitoring and Assessment Program at their Decatur, Alabama

,

plant. Per the agreement between EPA and 3M, this report represents the status report of

this effort as required by the MOU for the January 1 , 20 11 through March 31 , 2011 time

period. For brevity, and following previous convention, this report will be referred to as

the March 31, 2011 Quarterly Status Report

.

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# 2-1 

# 2. SUMMARY OF ACTIVITIE S

The Phase 2 Work Pla n and MOU were finalized on October 25, 2004. Phase 2 of the

monitoring program h as been completed and Phase 3 commenced on November 19, 2009

with EPA ’s acceptance of the Phase 3 Work Plan . This report represents the f ifth

quarterly status report under Pha se 3

. It covers the January 1 , 201 1 to March 31 , 201 1

timeframe and includes a description of activities completed under the Phase 3 Work

Plan

. In addition to Phase 3 MOU activities , 3M is performing other non

- MOU studies

related to PFOA to provide data fo r itself, the Alabama Department of Environmental

Management (ADEM) and /or EPA Region 4. Where relevant, non

- MOU data may be

incorporated in the revised Screening Level Human Exposure Assessment. This non

MOU information will also be described and provided in the se quarterly status reports.

Details on activities completed during this reporting period are as follows:

Groundwater Technical Progress

**•** 

# Off

- site well construction

– Arrangements for access to the remaining

groundwater monitoring locations for well construction are ongoing

. I t is

anticipated that the agreements will be finalized in the second quarter of 2011.

**•** 

# Off

- site groundwater sa mpling at the BFI Morris Farms L andfill – Groundwater

samples were collected from 14 active monitoring wells at the BFI Morris Farms

L andfill on March 21 through 23, 201 1 for PFOA analysis. Detailed descriptions

of the activities associated with the sampling activities are provided in the

Groundwater Sampling Technical Progress Report (Attachment 1).

**•** 

# On

- site groundwater – A nalyses of PFOA in routine groundwater monitoring

samples collected in November 2010 from wells in the Former Sludge

Incorporation Area have been completed. Analytical results are summarized in the

Groundwater Sampling Technical Progress Report (Attachment 1).

G roundwater sampling was performed during the weeks of March 2 1 and 28,

2011 at 17 locations in the chemical plant area and northeast of the closed landfill

at the Decatur site as part of routine quarterly monitoring for conventional

constituents. Th is effort included the collection of samples for PFOA analysis.

The routine groundwater monitoring locations included 16 individual wells and

the combined groundwater discharge from maintenance pumping wells at the

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# 2-2 closed landfill prior to treatment at the on- site g roundwater treatment plant. The

routine on

- site groundwater monitoring is not a MOU

- related activity

. Analytical

results for PFOA will be provided in a subsequent quarterly status report.

**•** 

# On

- site Avenue A area groundwater

– On January 27 , 2011 , t wo on- site

temporary wells were installed in the Avenue A drainage ditch area. These

temporary wells were installed to obtain additional data for the Remedial Action

Agreement Program being undertaken by 3M under the ADEM NPDES program

.

This is n ot part of the MOU activities. G roundwater sampling was performed on

January 27 and 28, 2011 at the two temporary wells and at one permanent well

(2 10R). When finalized, PFOA a nalytical results will be provided in a subsequent

quarterly status report. Detailed descr iptions of the activities associated with the

additional Avenue A sampling activities are provided in the Groundwater

Sampling Technical Progress Report (Attachment 1) and the Soil and Sediment

Technical Progress Report (Attachment 2).

Soil and Sediment Te chnical Progress

**•** 

# On

- site Avenue A area sediment and soil

– Between January 26 and 28, 2011,

s amples of sediments, surface and subsurface soils were collected at additional

locations within the Avenue A area to obtain data for the Remedial Action

Agreement Program being undertaken by 3M under the ADEM NPDES program.

This was not a MOU

- related activity. When finalized, PFOA analytical results

will be provided in a subsequent quarterly status report. Detailed descriptions of

the activities associated with the additional Avenue A sampling activities are

provided in the Soil and Sediment Technical Progress Report (Attachment 2).

Phase 3 Status Meeting and Technical Consultation

**•** 

# Phase 3 Status – 3M provided a summary of the status of Phase 3 investigations in

a pr esentation to EPA on March 28, 2011. The briefing included the display and

discussion of PFOA analytical results from on

- site and off

- site Phase 3 sample

collection and from on- site non- MOU related sampling activities.

**•** 

# Vegetative Uptake Study

– Based on review of the Phase 3 off

- site soil PFOA

concentrations from sampling of surface soils at ten locations within

ap prox imately 3 miles of the Decatur facility and surface soils from the new

Phase 3 off

- site well borings, a maximum concentration of 8 ng/g was e stablished

for the vegetative uptake study. The test species of tomato, turnip greens and

potato were selected on the basis of the home gardening survey conducted in the

Decatur Area of the most commonly grown produce in the fruiting vegetable

, leafy veget able and root vegetable categories.

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# 2-3 Expanded summaries of these activities , where applicable, are included as attachments to

this status report and provide additional details on the work which has been completed.

For utility and clarity of communication, e ach attachment has been constructed as a

separate report on a different media and/or study area

.

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# ATTACHMENT 1

GROUNDWATER SAMPLING

TECHNICAL PROGRESS R EPORT

JANUARY 1, 201 1 – MARCH 31 , 2011

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# Att 1 -1 GROUNDWATER

TECHNICAL PROGRESS REPORT

3M AND DYNEON DECATUR, ALABAMA

The following subsections descr ibe groundwater sampling activities completed during the

f irst quarter of 201 1 and summarize the results of analyses for PFOA . Analytical d ata

packages for Interim Report 11 are provided in Appendi x A

. Full analytic al data

packages including raw data, chromatograms and correspondence are provided in the

Raw Data Appe ndix to this quarterly status report.

OFF

- SITE ACTIVITIES

BFI Morris Farms Landfill Groundwater Sampling

Groundwater samples were collected from 14 exist ing monitoring wells at the BFI Morris

Farms L andfill between March 21 and 23, 2011 (Figure 1)

. The sampling was conducted

to evaluate the potential presence of PFOA in the local groundwater system. Wells were

selected based on a review of previous groundw ater monitoring data for the facility to

provide an upgradient control and suitable downgradient coverage of the primary waste

disposal areas

.

Well s at the facility are constructed in clusters to monitor different depths within the

groundwater system

. The BFI Morris Farms L andfill well nomenclature differs from that

established for the 3M facility in that identification of the groundwater zone monitored is

no suffix in the well ID for shallow (residuum) groundwater an d the suffix “D ” for

deeper bedrock grou ndwater.

Groundwater samples were collected by WESTON after completion of a routine

quarterly groundwater monitoring event conducted by Analytical Services, Inc. (ASI) on

behalf of Republic Services, Inc., the owner / operator of Morris Farm s Landfill . ASI

purged the monitoring wells and collected the facility samples prior to W ESTON ’s

sampling for PFOA analysis

.

Existing monitoring wells at the Morris Farm s Landfill are constructed as 4

- inch wells

with dedicated Grundfos pumps. As a standard practice, th e wells are purged and

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# Att 1 -2 sampled by ASI through the pumps. According to ASI, the pumps are assembled wit h

Teflon tubing to the surface. Due to the presence of the Teflon tubing and Teflon seals in

the pumps, sampling for PFOA was performed with disposable poly ethylene bailers

. All

of the wells were purged by ASI using the dedicated Grundfos pumps with the exception

of MW -0 2, which

, due to low yield and high turbidity, was purged using a peristaltic

pump and low

- flow purging techniques. To ensure consistency wit h the Phase 2 and

Phase 3 sampling procedures, the MW -02 well was purged to dryness using the dedicated

pump following completion of the ASI sampling. The well was then allowed to recharge

approximately 12 hours before sampling for PFOA occurred.

The groun dwater was poured from the disposable polyethylene bailers into laboratory

prepared containers, labeled, and placed into an ice chest f or shipment to the laboratory.

The sample information was also recorded onto a Chain of Custody which accompanied

the sam ples to the laboratory . O ne rins e ate blank was obtained from the disposable bailer

prior to use in sampling MW -01. A trip blank was also prepared and accompanied the

sample containers th roughout the sampling process. The samples were packed and

shipped to the 3M Environmental Laboratory in St. Paul, MN for PFOA analysis. When

complete, analytical results will be provided in a subsequent quarterly status report.

ON

- SITE ACTIVITIES

Former Sludge Incorporation Area Monitoring Wells

3M implemented a groundwater monitoring program as part of the F ormer Sludge

Incorporation A rea (FSIA) capping program to establish current conditions at the site and

to provide adequate coverage for continued monitoring. This is not a MOU

- related

activity but is being undertaken by 3M under a NPDES Remedial Action Agreement with

ADEM . The current FSIA groundwater program includes 29 existing monitoring wells

and five wells (140R, 141R, 142R, 143R and 144S) recently constructed to enhance

monitoring coverage. The November 2010 samplin g of the FSIA wells was described in

the December 31, 2010 Quarterly Status Report . Analyses of PFOA in groundwater

samples ha ve been completed and the results are summarized in Table 1 and shown in

Figure 2. A copy of the final analytical data package , In terim Report 11, is provided in

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# Att 1 -3 Appendix A and t he f ull a nalytical data package including raw data, chromatograms and

correspondence are provided in the Raw Data Appendix to this quarterly status report.

On

- site Chemical Plant and Closed Landfill Groundwat er Results

Groundwater sampling was performed during the weeks of March 2 1 and 28

, 201 1 at 17

locations in the chemical plant area and northeast of the closed landfill at the Decatur site

as part of routine quarterly monitoring. Monitoring locations includ ed 16 individual wells

and the combined groundwater discharge from the maintenance pumping wells at the

closed landfill prior to treatment at the on

- site groundwater treatment plant. The wells

sampled included 203L, 220R, 220L, 222R, 227R, 227L, 310R, RW312R, 317L

, 324L

,

RW327R, 328R, 328L, 330R, 330L, RW331S and the combined groundwater treatment

plant landfill extraction wells sample GRS04. This was not a MOU

- related activity. Once

finalized, PFOA a nalytical results will be provided in a subsequent quarte rly status report

.

On

- site Avenue A A rea G roundwater and S urface W ater

Groundwater sampling was performed at the two temporary wells and at one permanent

well ( 210R ) at locations throughout the Avenue A drainage ditch area on January 27,

2011 for PFOA anal ysis

. Th e Avenue A assessment is intended to obtain additional data

for the NPDES Remedial Action Agreement being undertaken by 3M for the ADEM

NPDES program and is not an MOU- related activity.

Monitoring locations included two samples collected from soil sampling locations in the

m arsh area, west of the inactive landfill, and one sample was collected from monitoring

well 210R, located southwest of the fire training area. The well locations are identified on

Figure 3.

Prior to sampling at the m arsh locat ions, the soil borings were advanced to

approximately 4 feet below ground surface and a temporary five foot screen was inserted

to facilitate groundwater sample collection . After these locations stabilized, depth to

water measurements were recorded at 10 i nches below grade and 6 inches below grade

for location S22 and S24, respectively. Additional information regarding the soil

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# Att 1 -4 sampling locations is provided in Attachment 2. The depth to groundwater was measured

at 3.65 feet below ground surface in monitoring well 210R. This well was sampled on

January 28, 2011 in accordance with standard monitoring well sampling procedures.

All groundwater samples for P FOA analysis were collected using disposable

polyethylene bailers. Appropriate volumes of groundwater were placed into laboratory

prepared containers which were sealed, labeled, and placed into an ice chest along with

completed chain -of- custody forms for shipment to the 3M Environmental Laboratory in

Maplewood, MN. Once finalized, PFOA a nalytical results will be provided in a

subsequent quarterly status report.

GROUNDWATER ELEVATIONS

– NOVEMBER 2010

Groundwater elevation data collected from various on

- site and off

- site groundwater

collection activities conducted in November 2010 were compiled to produce groundw ater

elevation contours. Residuum groundwater elevation contours are shown in Figure 4 and

bedrock groundwater elevation contours are shown in Figure 5.

# & <

& < & < & < & < & < & < 

# MW-01

MW-02

MW-03

MW-04 MW-13

MW-05 MW-10

& <

& < & < & < & < & < & < 

# MW-01

MW-02

MW-03

MW-04 MW-13

MW-05 MW-10

Figure 1

BFI Morris Farms Landfill

Groundwater Sampling

Decatur, AL 

# μ

File: \\fsfed01\tig\3MDec\MXD\BFI_Morris_Farm_landfill.mxd, 20-Apr-11 16:42, ricksc



# Imagery Source:

ESRI, i-cubed, USDA FSA, USGS, AEX,

GeoEye, Getmapping, Aerogrid, IGP. 2010

0 750 375 Feet 

# Legend

& < 

# Monitoring Well Locations (Clusters)

# ! . ! . ! . ! . ! .

!

. ! . ! . ! . ! . ! . ! . ! . ! .

! . ! . ! .

! . ! . ! . ! . ! .

! . ! . ! . ! .

! . ! .

! .

! . ! . 

# Field 12

Field 13Finley Island Road 

# Field 9State Docks Road



# Field 10

Field 11

Field 5Nebo Road



# Highway 20/72 Field 14

Field 8c 500-gal No. 2

Fuel Oil AST 207L

217D 217R

217S



# Norfolk Southern Railroad

Field 8b 

# 138-R

134S

136S 130S 133L 132S

131R

137S 135-R 140R

141R

144R

142R CW26

! . ! . ! . ! . ! .

!

. ! . ! . ! . ! . ! . ! . ! . ! .

! . ! . ! .

! . ! . ! . ! . ! .

! . ! . ! . ! .

! . ! .

! .

! . ! . 

# Field 12

Field 13Finley Island Road 

# Field 9State Docks Road



# Field 10

Field 11

Field 5Nebo Road



# Highway 20/72 Field 14

Field 8c 500-gal No. 2

Fuel Oil AST 207L

217D 217R

217S



# Norfolk Southern Railroad

Field 8b 

# 138-R

134S

136S 130S 133L 132S

131R

137S 135-R 140R

141R

144R

142R CW26

Figure 2

Former Sludge Incorporation Area

Groundwater PFOA Sampling

November 2010

Decatur, AL

File: \\fsfed01\tig\3MDec\MXD\FSIAGW_gw_PFOA_nov2010.mxd, 22-Apr-11 15:43, ricksc 

# Notes:

-Average PFOA is the average of primary and

duplicate sample analytical results in ng/mL (ppb).

-[a] Sampling location did not have an

appropriate FMS spike level to sufficiently

evaluate PFOA recovery.

-[b] The analytical uncertainty has been

adjusted for field matrix spike recovery to ± 31%



# Legend:

Groundwater

Sampling Location 

# ! .

Daikin Property Note:

R - Residuum Well

S - Epikarst Well

L - Bedrock Well 

# μ 800 0 400 Feet 

# 130R 793

130S 174

130L 70.0 131R 2500 [a]



# 131S 24.9

131L 90.7 

# 132R 251

132S 962

132L 404

133R 102

133S 385

133L 252

134R 1570 [b]



# 134S 5.49

134L 520

135R 2910 [a]



# 135S 13.7

135L 123 136S 75.4

136L 75.3

137S 0.271

137L 0.361 138S 147

138L 1.16 

# CW26R 386

CW26L 552

140R 121

141R 1.84



# 142R 47.6 144R 57.3

# " / " / & < 

# Tennessee River Finley Island Road

State Docks Road 

# SS22

SS24 210R



# μ

0 500 250

Feet



# 3M Decatur, AL Facility 

# Figure 3

Additional Avenue A

Groundwater Sampling

January 2011

File: \\fsfed01\tig\3MDec\MXD\Additional_AvenueA_gw_Jan2011.mxd, 21-Apr-11 15:41, ricksc Imagery Source:

ESRI, i-cubed, USDA FSA, USGS, AEX,

GeoEye, Getmapping, Aerogrid, IGP. 2010 

# Legend

& < 

# Monitoring Well



# " / Temporary Well

# & <

& <

& < & < & < & <

& < & <

& < & < & < & < & < & <

& <

& <

& < & < & < & <

& < & <

& < & < & <

& <

& < & < & < & <

& < & < 

# Wheeler Reservoir

Morgan County Landfill Bakers

Creek 330R

556.25

510R

560.72

204L

579.58 212R

578.65 227R

560.04 228R

578.73



# 138-R

587.32 602-R

569.47

603R

560.2

604R

558.1 605-R 130R

584.95

131R

600.38 132R

608.96

133R

614.05

134R

594.69

135R

575.12 136R

567.87 MW-1

571.42

MW-3

573.87 MW-4

568.13

MW-13

633.04 140R

599.14 141R

142R

555.51 143R

555.53 144R

590.08 611R

564.45

609R

572.89 607R

594.11

590



# 580

570



# 562 575 

# 566 

# 560



# 600 590 585 580 

# 556 590 610



# 600

588



# 630 

# 620 562 560 

# 559 

# 558



# 558



# μ

0 2,500 1,250

Feet 

# Legend:

Monitoring Well Location with

Groundwater Elevation

(feet above mean sea level).

3M Decatur, AL Facility 

# Figure 4

Residuum Groundwater

Elevation Contour Map

November 2010

File: \\fsfed01\tig\3MDec\MXD\residuum_gw_elev_1110.mxd, 21-Apr-11 17:02, ricksc 

# Groundwater Elevation Contour

(feet above mean sea level)

Imagery Source: ESRI Bing

Mapping Service 2010

Note: Water levels were recorded

in November 2010 100



# Facility Boundary & <



# 604R

558.1

# & <

& <

& <

& < & < & <

& <

& < & <

& < & < & < & < & < & <

& <

& <

& < & <

& < & <

& <

& < & <

& < & <

& < & < 

# Wheeler Reservoir

Morgan County Landfill Bakers

Creek

137

555.33 607

557.11

609

577.08 611

573.1 MW-4

565.15 MW-1

574.12

136

563.76

135

556.69 134

564.31 133

588.66 132

567.54

131

592.13 130

552.15

MW-13

583.27 605

561.74

604

557.1 603

558.22 602

556.16 138

562.49 MW-2

565.21

MW-3

569.08 212

579.66 228

578.88 227

559.45

206L

579.6 204

560.65 510

562.24 330

557.78

566



# 560 564



# 570 

# 568



# 574 558



# 580 556 554

590 

# 570



# 568



# 566 556 

# 568 564 560

570



# 558 556



# μ

0 2,500 1,250

Feet 

# Legend:

Monitoring Well Location with

Groundwater Elevation

(feet above mean sea level).

3M Decatur, AL Facility 

# Figure 5

Bedrock Groundwater

Elevation Contour Map

November 2010

File: \\fsfed01\tig\3MDec\MXD\Bedrock.gw_elev_1110.mxd, 21-Apr-11 17:04, ricksc 

# Groundwater Elevation Contour

(feet above mean sea level)

Imagery Source: ESRI Bing

Mapping Service 2010

Note: Water levels were recorded

in November 2010 100



# Facility Boundary & <



# 604R

558.1

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# APPENDIX A TO ATTACH MENT 1

GLP10- 01

- 01 INTERIM REPORT 11

The full data package, including raw data, is provided in the Raw Data Appendix.3MGLPIO.01-O1.InterimRebortII:AnalysisofPFOAInGroundwaterSamolesCollectedattheFormerSludueIncorporationAreaFSIA1locatedInDecatur.ALinNovember2010StudyTitleAnalysisofPerfiuorooctanoicAcid(PFOA)inGroundwater,SoilandSedimentforthe3MDecaturPhase3Site-RelatedMonitoringProgramDataRequirementEPATSCAGoodLaboratoryPracticeStandards40CFRPart792StudyDirectorJasimhaKesariRE,DEEWestonSolutions,Inc.1400WestonWayWestChester,PA19380Phone:610-7014761AuthorSusanWolf3MEnvironmentalLaboratoryInterimReportCompletionDateDateofsigningPerforming Laboratory3MEnvfronmentai HealthandSafetyOperationsEnwonmentalLaboratory3MCenter,Bldg260-05-N-17Maplewood,MN55144ProjectIdentificationGLP1O-01-01-11TotalNumberofPages53ThetestingreportedhereismeettherequirementsofISOAEC17025-2005Oenera1RequirementsfortheCompetenceofTestingandCalibrationLaboratories”,inaccordancewiththeA2LACertlilcata#2052.01.TestingthatcompileswiththisInternationalStandardalsooperateinaccordancewithISO9001:2000.Certificate#2052.01GLPiOOiOi;ntenmReport11AnalysisofPFOAinGroundwaterFormer SludgeIncorporationAreaNovember 2010Thispagehasbeenreservedforspecificcountryrequirements.Page2 of53GLP1O01-01:InterimReport11Anely5isofPFOAinGroundwaterFormerSludgeIncorporationAreaNovember2010 GLP COMPLIANCE

STATEMENT ReportTitle:GLP1O-01-01InterimReport11.AnalysisofPFOAinGroundwaterSamplasCollectedattheFormerSludgeIncorporationArea(FSIA)atDecatur,ALinNovember2010Study:AnalysisofPerfluorooctanoicAcid(PFOA)inGroundwater,SoilandSedimentforthe3MDecaturPhase3Site-RelatedMonitoringProgram.ThisanalyticalphasewasconductedincompliancewithToxicSubstancesControlAct(TSCA)GoodLaboratoryPractice(Gil’)Standards,40CFR792,withtheexceptionslistedbelow:•These

are environmental

sampleswherethereisnospecifictestsubstance,nospecifictestsystemandnodosingofatestsystem.•ThereferencesubstanceshavenotbeencharacterizedundertheGLPsandthestabilityunderstorageconditionsatthetestsitehavenotbeendeterminedunderGLPs.JaisimhaKesan,RE.,DEE,StudyDirectorDatePage3of53GIPIO-Ol-Ol;

trtterwn

Report

11 AnaIyss

of PFOA

in Groundwater Former

Sludge Incorporation

Area- November

2010 QUALITY ASSURANCE

STATEMENT Report

Title: GLP1O-O1--01,

Interim

Report

11. Analysis

of PFOA

in Groundwater

Samples

Collected at the Former

Sludge Incorporation

Area (FSIA)

at Decatur,

AL

in November2010 Study: Analysis

of Perfluorooctanoic

Acid (PFOA)

in Groundwater,

Soil

and Sediment

for

the

3M Decatur

Phase

3 Site-Related

Monitoring

Program. This report

and

the accompanying

data

were audited

by

the

3M Environmental

Laboratory

Quality Assurance

Unit (QAU),

as indicated

below.

The findings

were reported

to the principal investigator (P1), laboratory management

and study director.

Date Renorted

to Inspection

Dates

Phase

Testing

Facility

Diter Management 12/3C10

In-Phase

2)4111

2)4/11 1127/11—1/28111

Data!lnterimReport

214/11

2/4/11 cd QAU Repres1tative

Date

Page

4 of

53GLP1001O1;

Interim

Report

11 Analysis

of PFOA

n Groundwater Former

Sludge Incorporation

Area- November

2010 TABLE

OF CONTENTS GLP Compliance

Statement

3 Quality Assurance

Statement

4 Table

of Contents

5 List

of Tables

6 1 Study Information

8 2 Summary

9 3 Introduction...

10 4 Test

& Control Substances

11 5 Reference Substances

11 6 Test System

12 7 Method Summary

12 7.1

Methods

12 7.2

Sample Collection

12 7,3

Sample Preparation

12 7.4

Analysis

12 8 Analytical

Results

13 8.1 Calibration

13 8.2

System Suitability

14 8.3

Lwnit

of Quantitation

(LOQ)

14 8.4 Continuing

Calibration

14 8.5

Blanks

14 8.6

Lab Control

Spikes

(LCSS)

14 8.7

Analytical

Method Uncertainty

16 8.8

Field Matrix

Spikes

(FMS)

16 Page

5 of

53GLP1O-01.O1:InterimReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationArea-November20109DataSummaryandDiscussion1710Condusion3011Data/SampleRetention3012Attachments3013Signatures31 LIST

OF TABLESTable1.SummanzedPFOAResults(FSIAGroundwater,Decatur,AL.November2010)10Table2.InstrumentParameters13Table3.LiquidChromatographyConditions13Table4.MassTransitions13Table5.LimitofQuantitation(LOQ)14Table6.LaboratoryControlSpikeRecovery15Table7.AnalyticalMethodUncertainty16Table8.FieldMatrixSpikeLevels16Table9.DALGW13OR10110518Table10.DALGW13OS10110518Table11.DALGW13OL10110518Table12.DALGW131R10110319Tablel3.DALGWI31S10110319Table14.DALGW131L10110319TablelS.DALGWI32R10110220TablelG.DALGWI32S10110220Table17.DALGW 132110110320Tablel8.DALGWI33R1OIIO221Tablel9.DALGWI33S1OIIO321Table2O.DALGW133L1O11O321Page6of53GLP1O-01-01;interimReport11AnalysisofPFOAinGroundwaterFormerSludgeincororatlonArea-November2010Tabte2l.DALGW134R10110522Table22.DALGW134SIO11O522Table23.DALGWI34LIOIIO522Table24,DALGWI35R1O11O523Table25.DALGW135S10110523Table26.DALGW135L1O11O5Table27.DALGW136S1O1IO324Table28.DALGW13&.10110324Table29.DALGWI37SIOI1O924Table30.DALGW137L10110925Table31.DALGW138S10111025Table32.DALGW138L1OI1IO25Table33.DALGWCW26R10111026Table34.DALGWGW26L10111026Table35,DALGWI4OR10110426Table36.DALGW14IR10111027TabIe37,DALGW142R10111027Table38.DALGW144R10111027Table39.TripBlankl28TabIe4O.TripBlartk228Table4tTripBlank328Table42.TripBlank429Table43.RinseateBlanks29Page?of53GLP1O-01-01,

intenm

Report

11 Analysis

of PFOA

in Groundwater Former

Sludge Incorporation

Area- November

2010-i- I ‘StudiInformatIony Sponsor 3M Company Sponsor Representative Gary Hohenstern 3M EHS Operations 3M Building 224-5W-03 Saint

Paul,

MN 55144-1000 Phone:

(651) 737-3570 Study Director Jaisimha

Kesari,

P.E.,

DEE Weston Solutions,

Inc. West Chester,

PA 19380 Phone:

(610) 701-3761 Fax:

(610) 701-7401 j.kesari@westonsolutions.com Study Location Testing

Facility 3M EHS Operations 3M Environmental

Laboratory Building 260-5N-17 Maplewood,

MN 55106 Study Personnel William

K. Reagen,

Ph.D.,

3M Laboratory

Manager Cleston

Lange,

Ph.D., Principal Analytical Investigator. (clangemmm.com);

phone

(851 )-733-9860 Susan

Wolf

3M Analyst Kevin

Eich: Analyst Chelsie Grochow,

Analyst Jonathan

Steege;

Analyst Study

Dates Study Initiation:

March

8, 2010 Interim

Report

11 Experimental

Termination:

January

8, 2011 Interim

Report Completion:

Date

of Interim

Report

Signing Location

of Archives All original

raw

data

and

the analytical

report

have

been archived

at the

3M Environmental Laboratory

according

to

40 CFR

Part

792.

The

test substance

and analytical

reference

standard reserve

samples

are archived

at the

3M Environmental

Laboratory

according

to

40 CFR

Part

792 Page

8

of

53GLPIO01-01;InterimReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationAreaNovember2010The3MEnvironmentalLaboratoryreceivedgroundwatersamplesfrom wellslocatedattheFormerSludgeIncorporationArea(FSIA)inDecatur,AL,representingthirtydifferentsamplinglocations.Atotal ofonehundredsixty-ninesamplebottleswerereceivedat the3MEnvironmentalLaboratoryforperfiuorooctanoate(PFOA)analysis,andincludedduplicategroundwatersamplesfromeachsamplinglocation,Samplesalsoincludedatleasttwofieldmatrixspike(FMS)samptesforeachlocation,fourtripblanksetscontainingMilli-Qwaterandappropriatetripblankspikes,andtwoequipmentnnseates.Inaddition,onesoilequqnlentrinseateblankfromGLPIO-01-01-12wasan&yzed.TheequipmentnnseateblanksdidnothaveFMSsamplespreparedfordeterminationofPFOArecovery.Thegroundwatersamples,tripblanksaridtwoequipmentnnseateblanksassociatedwithGLPI0-01-01-10werereceivedfromWestonpersonnelonNovember18,2010.TheequipmentnnseateblankassociatedwithGLP1O-01-01-12wasreceivedfromWestonpersonnelonOctober15,2010.AllofthesampleswerepreparedandanalyzedforPFOAfollowing3MEnvironmentalLaboratoryMethodETS8-044.0under3MprojectCLP-10-01-01-11.ManyofthegroundwatersamplesrequireddilutiontoattainPFOAconcentrationswithintherangeofthecurve,insomeinstancesupto100-folddilutionwererequired.TheaveragemeasuredPFOAconcentrationsaresurriahzedinTable1.Theequipmentrinseatesandthetripblankwerebelowthelowerlimitofquantitation(LLOQ)of0.0250ng/mL,indicatingadequatecontrolofsamplecontaminationduringshippingandsamplecoflections.ThePFOAconcentrationresultsforallgroundwatersrangedoverfourordersofmagnitudefrom0.271ngfmLto2910nglmLThea,alytkaluncertaintywasestimatedat100±23%.Page9of53Gt,P1O.O1.O1:InterimReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationArea-November2010Tablei.SummarizedPFOAResults(FSIAGroundwater,Decatur,AL,November2010>Avg.PFOARelativeSampleIDConcentrationPercent(ng!mL)DifferenceDALGW13OR1O11O57930.88%DALGW13OSIOI1OS1740.58%DALGW130L10110670.02.0%DALGW131R101103

22.11_.__.-1.6%DALGW131S10110324.94.0%DALGW131L1O11O390.752%DALGW132R1011022514.4%DALGW132S1011029620.52%DALGW132L1011034043.0%DALGW133R1011021029.5%DALOW133S1011033854.2%DALGW133L1011032521DALGW134R10110515701b]9.6%DALGW13451011055.495.5%DALGWI34LIO1IO55201,3%DALGW135R1O11O51.4%DALGW135S10110513.73.7%DALGW135LIO11O51232.4%DALGW136510110375.43.8%DALGW136L1O11O375.33.1%OALGW137S1011090.2711.8%OALGW13711011090,3610.28%DALGWI38S1O1I1O1473.4%DALGW138LIOI1IO1.166.1%DALGWCW2BR1011103861.8%DALGWCW26L1011105524.7%DALGW14OR1OI1O41210.83%DALGW141R1OI1IO1,8410%DALGW 142R10111047.64.6%DALGW144R10111057.30.17%,lanks(Milli-QWater)<0.0250N/AGLP1O-01-01-11Equipmentrinseateblanks:<00250N/ADALGW13OLartdDALGWI44RGLPIO-01-O1-12SoilEquipmentrinseateblank:<00250N/ADALSS607RN/A;notapphcableTheanalyticaluncertaintyforPFOAwasestimatedat100±23%.[a]SamplinglocationdidnothaveanappropriateFMSspikeleveltosufficientlyevaluatePFQArecovery.[b]Theanalyticaluncertaintyhasbeenadjustedforfieldmatrixspikerecoveryto±31%. 3 IntroductionThisanalyticalstudywasconductedaspartofthePhase3EnvironmentalMonitoringandAssessmentProgramforthe3MfacilitylocatedinDecatur,Alabama.Theobjectiveoftheoverallprogramistogaininformationregardingconcentrationsofpertluorooctanoate(PFOA)invariousenvironmentalmediaPage10of53GLP10-O101;InterimReport11AnaIyssofPFOAinGroundwaterFormerSludgeIncorporationAreaNovember2010suchasgroundwater,soilsandsedimentsthatareassociatedwitharidneartheDecaturfaculty.ThisanalyticalstudywasconductedtoanalyzegroundwatersamplescollectedfromvariouswellslocatedattheFormerSludgeincorporationArea(ESAI)inDecatur.ALforPFOAinanefforttocharacterizeregionalgroundwaterconditions.The3MErwironmentalLaboratorypreparedsamplebottles(250mlhigh-densitypolyeth1ene)whichwereshippedtoDecatur,ALWestonpersonnelpriortofieldsampling.Samplebottlesetsforeachgroundwatersamplinglocationincludedafieldsample,fieldsampleduplicate,andaminimumoftwofieldspikesamples.Eachemptycontainerforgroundwater samplingswasmarkedwitha“filltohere”linetoproduceafinalsamplevolumeof200mL.ContainersdesignatedforfieldmatrixsampleswerefortifiedwithanappropriatematrixspikesolutioncontainingPFOApriortobeingsenttothefieldforsamplecollection.Seesection8.8ofthereportforfieldmatrixspikelevels.Sampleswerepreparedandanalyzedaccordingtotheproceduredefinedin3MEnvironmentalLaboratorymethodETS-8-044.0“DeterminationofPerfiuorinatedCompoundsinWaterbyHighPerformanceLiquidChromatography/MassSpectrometryDirectInjectionAnalysis”.Table1summarizestheaveragePFOAconcentrationsfortheduplicategroundwatersamplescollected,thetripblank,andequipmentrinseatesamples.Tables9-43summarizetheindividualsampleresultsandtheassociatedFMSrecoveries.Allresultsforthequalitycontrolsamplespreparedandanalyzedwiththesamplesarereportedanddiscussedelsewhereinthisreport.4Test&ControlSubstancesTherewasnotatestsubstanceorcontrolsubstancesintheclassicsenseofaGLPstudy.Thisstudywaspurelyanalyticalinnature.5ReferenceSubstancesTheanalyticalreferencesubstancesusedforthisstudyarelistedbelow.ReferenceSubstancePFOAPFOAChemicalNamePerfluorooctanoatePerfiuorooctanoateChemicalFormulaC7FCOOHC,F5OOIdentifierCAS#33567-1SourceOakwoodProducts3MExpirationDate09/29/201202127/2017StorageConditionsFrozenFrozenChemicalLotNumber3440332TCRNumberTCRO7-0041TCR-123PhysicalDescriptionPowderWhitePowderPurity995%95%Page11of53GLP1O-01-01;InterimReportitA9alysisofPFOAinGroundwaterFormerSludgeIncofporationArea-November2010__TherewasnotatestsystemforthisstudyintheclassicsenseofaGLPstudy.ThisstudywasconductedforanalysisofgroundwatersamplescollectedfromwellslocatedinDecatur,ALbyWestonSolutions,inc.personnel.Samplesforthisstudyare“realworld”environmentalsamples.SampleDescriptionKeyCode.StrtrNumberStrgDesaiptxaie&leDALI32ROIOIIO2ISampleLocationDALDecatur,Alabama24IID&ie:1323WeLevelRResldumshaowwele”be8thIgzone1.Bedrockwater-bearingzineSEp#rs1mkidJeter-beadngzone4SamplingDate101102-Noven,ber2,20105Sample77seOpdmaiysampleIdupficatesampleLSlowspikeMSamidspike_________________HShighspike 7.1 MethodsAnalysisforallanaMeswascompletedfollowing3MEnvironmentalLaboratorymethodETS-8-044.O‘DeterminationofPerfiuonnatedCompoundsInWaterbyHighPerformanceLiquidChromatographylMassSpectrometiyDirectInjectionAnalysis’. 7.2 Sample CollectionSampleswerecollectedin250mLNalgene(high-densitypolyethylene)bottlespreparedatthe3MEnvironmental Laboratory.SamplebottlesassociatedwithGLPIO-01-01-11werereturnedto thelaboratoryatambientconditionsonNovember18,2010.TheequipmentrinseateblankassociatedwithGLP1O-O1-01-12wasreturnedtothelaboratoryatambientconditionsonOctober15,2010.Sampleswerestoredrefrigeratedatthelaboratoryafterreceipt.AsetoflaboratorypreparedTripBlankandTripBlankfieldmatrixspikesweresentwitheachcoolerofsamplecollectionbottles. 7.3 Sample PreparationSampleswerepreparedbyremovinganaliquotofthewellmixedsampleandplacingit‘ianautovialforanalysis.SamplesthatrequireddilutionwerepreparedbydilutionsImLsamplewith9mLsofMilti-Qwater(dilution1:10).Somesamplinglocationswerediluted1:100bydilutingthe1:10andadditonalwithMill.Qwater. 7.4 AnalysisAUstudysamplesandqualitycontrolsampleswereanalyzedforPFOAusinghighperformanceliquidchromatogrhyItandemmassspectrometry(l-4PLC/MS/MS),Detailedinstrumentparameters,thePage12o153GLP1O-01-01;InterimReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationArea-November2010liquidchromatography gradientprogram,andthespecificmasstransitionsanalyzedaredescribedintherawdatahardcopiesplacedinthefinaldatapacket,andarebrieflydescribedbelowinTable2,Table3andTable4.Table2.instrumentParameters.InstrumentNameETSBusterAnalyticalMstiodFollowedETS-8-044.0AnalysisOats113/11-1/8/11LiquidChroniatogtaphAlenI1100Guardcok,mnPrismRP(2.1mmX50nsn),5Anyt)calcolumnBetas4C182.1rmiX100mm),5ilrrØctlonVolume2or10iLMassSpectrometeriedBlosyslernsAPI4000IonSourceTixboSprayElectrodeTurboIonetedrodePolarityNegativeSoftwareArralystl.4.2Table3.LIquidChromatographyConditions.StTotalreFlowRatePecentApercentBNuner(mm)(pUmh7)(2mMamrnoniomacetate)(Methw,ol)0030097.03012.030097.03.0211.53005.095.0313.53005.095.0413630097.03.0517.030097.030Table4.MassTransitions.8.1CalibrationSampleswereanalyzedagainstanexternalstandardcalibrationcurve.CalIbrationstandardswerepreparedbyspikingknownamountsofthestocksolutioncontainingthetargetanatytesintoalaboratoryMliiiQwater.Atotaloffifteenspikedstandardsrangingfrom0.025ng/mLto100ng/mL(nominal)wereMassTransitionAnalyteQ1/Q34131369PFOA41312194131169Dwdtimewas100msecloreaditransition.The irttMduaitransitionswaresunvnedtopmduaotalionc)romatogram’(riC),wtiidiwasusedforquantilalion,Page13of53GLP10-0101:ntenrnReport11AnalysisofPFOAinGrot.ndwaterFormerSludgeIncorporatIonAreaNovember2010prepared.Thetwohighestcurvepointsweredisabledtomeetlineañtycriteria.Aquadratic,1/xweighted,calibrationcurveofthepeakareacountswasusedtofitthedataforPFOA.Thedatawerenotforcedthroughzeroduringthefittingprocess.Calculatingthestandardconcentrationsusingthepeakareaconfirmedaccuracyofeachcurvepoint.Eachcurvepointwasquantitatedusingtheoverallcalibrationcurveandreviewedforaccuracy.Methodcalibrationaccuracyrequirementsof100±25%(100±30%forthelowestcurvepoint)weremetforallanalytes.Thecorrelationcoefficient(r)wasgreaterthan0.995forPFOA 8.2 System SuitabilityAcalibrationstandardwasanalyzedfourtimesatthebeginningoftheanalyticalsequencetodemonstrateoverallsystemsuitability.Theacceptancecritenaoflessthanorequalto 5%relativestandarddeviation(RSD)forpeakareaandretentiontimecriteriaoflessthanor equalto2%RSDwasmetforPFOk 8.3

Limit

of Quantitation

(LOQ)TheLOQforthisanalysisisthe lowestnon-zerocalibrationstandardiiithecurvethatmeetslinearityandaccuracyrequirementsandforwhichtheareacountsareatleasttwicethoseoftheappropriateblanks.ThenominalLOQforallanalytescanbefoundinTable5.Table5.LImitofQuantitation(LOQ).Ana.ysJsDatePFOALOQ,ng/mL.1/3/110.0250 8.4 Continuing

CalibrationDuringthecourseofeachanalyticalsequence,continuingcalibrationverificationsamples(CCVs)wereanalyzedtoconfirmthattheinstrumentresponseandtheinitialcalibrationcurvewerestillincontrol.AllCCVsmetmethodcriteriaof100%±25%forPFOA. 8.5 BlanksThreetypesofblankswerepreparedandanalyzedwiththesamples:solventblanks,tripblanksandequipmentrinseateblanks,SolventblankresultswerereviewedandusedtoevaluatemethodperformancetodeterminetheLOOforPFOA.Tripblanksreflecttheshippingandsamplecollectionconditonsthesamplebottlesandsamplesexperience.Equipmentrinseateblanksareaqueoussamplesthatreflecttheefficiencyofequipmentcleaninginthefieldbetweendifferentsamplecdiectionsandareproofofnocrosscontaminationofsamplesfromtheequipment 8.6

Lab Control

Spikes

(LCSs)Low,mid,andhigh-levellabcontrolspikeswerepreparedandanalyzedintnplicatewitheachpreparationset.LCSswerepreparedbyspikingknownamountsofthearralyteinto40mLoflaboratoryMilli0water,toproducethedesiredconcentration.Thespikedwatersampleswerethenanalyzedinthesamemannerasthesamples.Themethodacceptancecriteria,averageofLCSateachlevelshouldbewithin100%±20%withanRSD2%,weremetforthelinearPFOALCSsamples,AsthereferencematerialsusedforquantitationofPFOAispredominantlylinear,andthePFOApresentinthewatersamplesarecomprisedoflinearandbranchedisomers,additionalLCSsamplesoflinearandbranchedPFOAwerepreparedatthreeconcentrationstoevaluatethepotentialforanalyticalbias.TheaveragerecoveryofthelinearandbranchedLCSatthelowandhighlevelsmetmethodacceptancecriteria.Themid-levellinearandbranchedLCShadanaveragerecoveryof123%.AllLCSsampleswereusedinthedeterminationofmethoduncertaintyinsection8.7.Page14 of53GLP1G0101;InterimReport11AnalysisofPFOAInGroundwaterFormerSludgeIncorporationNea-November2010ThefollowingcalculationswereusedtogeneratedatainTable6forlaboratorycontrolspikes:CalculatedConcentrationLCSPercentRecovery=100%SpikeConcentrabonLCS%RSD=standarddeviationLCSreplicates100%averageLCSrecoveryTabte6.LaboratoryControlSpikeRecovery.ETS-8-044.0j1j__LinearPFOASpikedCalculatedConcentrationConcentaiionLabID(nglmL)(nWrnL)%RecoveyLCS-101230-10.4970580117LCS-101230-20,4970.557112LCS-101230-30.4970.590119Average±%RSD116%±3.1%LCS-101230-44.975.83117LCS-101230-54.975.69115LCS-101230-64.975.69114Avege±%RSD116%±1.3%LCS-.101230-729.925.685.6LCS-101230-829.925.886.3LCS-101230-929.925,785.9Average±%RSD85.9%±0.41%ETS4-044.0Arrafyzed1t301iLinear•B,nchedPFOASpikedCalculatedConcentrationConcentrationLabID(ng/niL)(ng’mL)%RecovesyLCS-101230-1OECF0.4980.546110LCS101230-11ECF0.4980.553111LCS-101230-12ECF0.4980.541109Avaagat%RSO110%±0.91%LCS-101230-13ECF4.996.29126LCS.101230’-14ECF4.99603121LCS-101230-15ECF4.998.12123Aveiage±%R.SD123%±2.0%LCS-101230-16ECF29.931.3105LCS-101230-17ECF29.930.8103LCS-101230-18ECF29.930.6102Average±%RSD103%±1.5%(1)Labatcrycontrolsampleaveragerecoverydidnotmeetmeodacceptancecriteriaof100%±20%.Page15of53GLP1O-01-O1;interimReport11AnaiyssofPFOAinGroundwaterFormerSludgeIncorporationArea-November20108.7AnalyticalMethodUncertaintyAnalyticaluncertaintyisbasedonhistoricalQCdatathatiscontrolchartedandusedtoevaluatemethodaccuracyandprecision.ThemethoduncertaintyiscalculatedfollowingETS-12-0122.Thestandarddeviationiscalculatedforthesetofaccuracyresults(in%)obtainedfortheQCsamples.Theexpandeduncertaintyiscalculatedbymultiplyingthestandarddeviationbyafactorof2,whichcorrespondstoaconfidencelevelof95%.Table7.AnalyticalMethodUncertainty.MethodIAnalyteMethodStandardDeviation

IUncertaintyII IPFOA

IETS-8444.O11.3±23%I8.8FieldMatrixSpikes(FMS)Aminiumoftwofieldmatrixspikeswerecollectedateachsamplingpointtoverifythattheanalyticalmethodisapplicabletothecollectedmatrix.Fieldmatrixspikesweregeneratedbyaddingameasuredvolumeoffieldsampletoacontainerspikedbythelaboratorywiththetargetanalytespriortoshippingsamplecontainersforsamplecollection.Fieldmatrixspikerecoverieswithinmethodacceptancecriteriaof100t30%confirmthatunknown”coniponentsinthesamplematrixdonotsignificantlyinterferewiththeextractionandanalysisoftheanalytesofinterest.Fieldmatrixspikeconcentrationsmustbe50%ofthesampleconcentrationtobeconsideredan appropriatefieldspike.Fekimatrixspikesarepresentedinsection9ofthisreport.Table8.FieldMatrixSpikeLevels.SamplingLocationSpikeLevelPFOAngmLLow0.0991136R,137R,137s,137L1381Mid0.991High9,91Low0.9911301,131L,1315,133R,134S,1355,1355Mid9.91High99.113CR,1305,132R,1321,1325,1335,133L,Low9.91134L1351,1361,1385,138R,CW26R,CW26L,Mid99.114CR,141R,142R,143R,144Ri1E991131R,134R135R1ghLow0.991T’BlnkMid9.91npaMid-High99.1High991(SampleConcentrationofFMS-AverageConcentrationFicidSample&FicldSampleDup.)FMSRecovery100%SpikeConcentratonPage18oi53GLP1O-01-01;lntennReport11AnalystsofPFOAinGroundwaterFormerSludgeIncorporationArea-November2010—w‘—4WIL49-DataSummaryandDiscusson‘rrt%i&-.-Thetablesbelowsummarizethesampleresults andfieldmatrixspikerecoveriesforthesamplingcationsaswellastheTripBlanksandnnseateblanks.ResultsandaveragevaluesareroundedtothreesignificantfiguresaccordingtoEPAroundingrules.Becauseofrounding,valuesmayvaryslightlyfromthoselistedintherawdata.Fieldmatrixspikerecoveriesmeetingthemethodacceptancecriteriaof±30%,demonstratethatthemethodwasappropriateforthegivenmatrixandtheirrespectivequantitativeranges.DALGW134R101104-Thehigh-levelFMSdidmeetmethodacceptancecriteriawitharecoveryof69.1%.Thelow-levelFMSwasnotappropriateascomparedtothesampleconcentration.TheanalyticaluncertaintyhasbeenadjustedforPFOAto±31%.DALGW131R101103—Duetothehighconcentrationof PFOAdetectedinthesample,thissamplinglocationdidnothaveanappropriateFMSspikeleveltosufficientlyevaluatePFOArecovery.DALGW135R101105—DuetothehighconcentrationofPFOAdetectedinthesample,thissamplinglocationdidnothaveanappropriateFMSspikeleveltosufficientlyevaluatePFOA recovery.Page17of53Table9.DALGW130R101105GLP1O-01-01:InterimReporl11AnalysisofPFOAriGroundwaterFormerSludgethcorporationArea-November2010PFOAConcentration3MLIMSIDDescrfption(ng/mL)%RecoveiyGLP1O-01-01-11-001DALGWI3OROIO11O5789NAGLPIO-01-01-11-002OAt.GW130RDB101105798NAOLP1O-O1-01-11-003DAL.GW13ORLS101105805NCGLP1O-C1-01-11-004DALGW13ORMS1OI1O5895NCGLP1O-01-01-11-005DALGW130RHS101105168089.6AverageConcentration(n’mL)±%RPD793ng/mL±CL88%NANotApçftcableNC=NotCaated:Encogenoussampleconcentrationgreaterthan2xspikelev.Table10.DAL.GW130S101105PFOAConcentration3MLIMSIDDescnption(ng’mL)%Recove,yGLPIO-01-01-11-006DALGW13OSO1O11O5174NAGLPIO-01-01-11-007DALGWI3OSDB101105173NAGtJ’10-01-01-11-008OALGWI3OSLS1OIIO5183NCGLP1O-01-01-11-009DALGW130SMS10110527097.4GLP101-01-11-010DALOW130SHS101105115098.5AverageConcentration(nnL)±%RPD174ng/mL±0.58%NA=NotAppUcab4eNC=NotCalciialed;Endogenoussampleconcentrationgreaterthan2xsp4tetevel.Table11.DALGW130L101105PFOAConcentration3MLIMSIDDeseMption(ng/mL)%RecovesyGLP1O-01-01-11-011DALGWI3OLOIO1IO569.3NAGLP1O-01-01-11-012DAt.GW130L0810110570.7NAGLP1O-01-01-11-013DALGW13OLLS10110571.0NCGLP1O-01-01-11-014DALGWI3OLMSIOIIO5,73.3NCGLPIO-01-01-11-015DALGWI3OLHS1O11O516292.8AverageConcentration(ngfmL)±%RPD70.0n9mL±20%NANotApllcab1eNC=NotCaIcated:Endogenoussanp4econcentrationgreaterthan2xspikelevel.Page18of53GLP1O-O1-01;lntenmReport11AnaIsisofPFOAinGroundwaterFormerSludgeIncorporationArea-November2010Table12.DALGW131R101103PFOAConcentration3MLJMSIDDescription(ng’mL)%RecoveryGLP1001-0111-017DALGW131RO1O11O32520NAGLPIO-01-01-11-018DALGWI3IRDS1011032460NASLP1G-0101-11-019DALGW131RLS1011032570NCGLP1O-O1M1-11020DALGW131RHS1011033240NCAverageConcentration(ngfmL)±%RPD2500ng/mL±1.6%NANotApplicableNC=NotCalailated;Endogenoussantecorntrationgreaterthan2xsptkelevel(1)SanglocationdicnothaveanappropriatespeleveltoevaluatePFOArecovery.Table13.DAIGW13IS101103PFOA_______Concentration3MLIMSIDDescription(ng(mL)%RecovergGLPIO.01-01.11.021DALGW131SO1OI1O325.4NAGLP10-0101-11-022DALGW131$D810110324.4NAGLP1O-01-01-11-023DALGW1315IS10110325.3NCGLP1O-01-01-11-024DALGW1315MS10110334.6NCGLP1O-01-01-11-025DALGW131SHS101103127103AverageConcentration(ng/mL)t%RPD24.9ng’mL±4.0%NANotApplicableNCNotCala.iated;EndogenoussampleconcentrationgreaterthanZxspikelevel.Table14.DAL.GW131L101103_____________PFQA______Concentration3MUMSIDDescription(ngfmL)%RecoveryGLP1O-01-01-11-026DAIGW1311010110388.3NAGLPIO-01-01-11-027DALGW13110810110393.0NAGLP1O-01-01-11-028DALGW13ILLS10110387.7NCGLP10-0101-11-029DALGWI31LMS10110396.9NCGLP1O-01-.0l-11-030DALGW1311HS10110317989.2AverageConcentration(ng/mL)±%RPD90.7ng/mL±5.2%NA=NotApplIcableNCNotCalculated;EndogenoussaropleconcentrationgreaterThan2xspikelevel.Page19of53Table18.DALGW132R101102GLPIO-01-01;interimReport11AnalysisofPFOAinGroundwaterFarmer SludgeincorporationArea-November2010_______________________PFOA_______Concentration3MLIMSIDDescription(ng’mL)%RecovetyGLP1O.0l-01-l1-031DALGWI32ROIOI1O2256NAGIPIO-O1-01-11-032DALSW132RDB101102245NAGIPIO-01..0i-l1-033DAL(3W132RIS101102267NCGLPIO-01-01-11-034DALGWI32RMS101102356NCGLPIO-01-01-11-035DAL(3W132RHS101102116091.8AveraqeConcentration(nWL)±%RPD251nWmL±4.4%NANotAppkcableNCNotCalculated;Endogenous sampleconcentrationgreaterthan2spikelevel.Tablel8.DALGWI32SIOIIO2PFOA_______Concentration3MLIM$IDDewip*fon(n’mL)%Pecove’yGLPIO-01-01-11-036DAL(3W132$0101102959NAGLPIO-01-01-11-037C)ALSW132$DB101102964NAGLP1O-01-01-11-038DALGW132$LS101102926NCGLPIO-01-01-11-039DALGWI32SMSIOIIO21020NCGLP1O.01.01-11-040DALGWI32SHSIOIIO2181085.8AvereqaConcentration(nnL)±%RPD962 ng’mL±032%NA=NotAkableNCNotCalculated;Endogenoussampleccneer*allon greaterthan2xspikelevel,Table17.DALGW132L101103PFCA_______Concentration3MLIMSIDDescription(n9’mL)%RecoveryGLP1O.01.01-11-041DALGWI32LO101103398NAGIP1001-01-11-042DALGWI32LDB101103410NAGLPIO-01-01-11-043DALGW132LLS101103451NCGIPIO-01-01-11-044DALGWI32LMS101103482NCGLP1O-01-01-11-045DALGW132LHS101103129089.4AvemgeConcentration(nq/rnL)±%RPD404ng/mL±3.0%NA=NotpltcatleNC=NotCalculated;EndogenoussampleconcentratIongreaterthan2xspikelevel.Page20of53Table18.DALGW133R101102GLP1O-O1-O1:InterimReport11AnalysisofPFOAnGroundwaterFormerSludgelncorporatonArea-November2010________________________PFOA________Concentration3MLIMSIL)Description(n/mL)%RecoveiyGLP1O-01-01-11-046DALGW133RO1O11O2107NAGLP1O-01.01-11-047DALGW133RDBIO1IO2973NAGLP1O-01-01-11-048DALGW133RLSIO11O2102NCGLP1O-01-01-11-049DALGW133RMS101102108NCGLP1O-01.01-11-050DALGW133RHS1011021991.7AverageConcentration(nWmL)±%RPD102nWmL±9.5%NANotAppltcableNCNotCalculated;Endogenoussampleconcentrationgreaterthan2xspikelevel.Table19.DALGW133S101103PFOA_______Concentration3MUMSlDDescription(nglmL)%RecoveiyGLP1O-0141-11-051DALGW133SO1OI1O3393NAGLP1O-01-01-11-052DALOW133SD8IOIIO3377NAGLP1O-01-01-11-053DALGW133SLS101103407NCGLPIO-01-01-11-054DALGWI33SMSIOI1O3485NCGLP1O-01-01-11-055DALGW133SHSIO11O3126088.3AvgeConcentration(n’mL)±%RPD385n’mL±4.2%NA=NotApplIcableNC=NotCalc*dated;Endogenoussampleconcentrationgreaterthan2xspikelevel.Table20.DALGW133L101103PFOA________Concentration3MLIMSIDDescription(n/mL)%RecoverjGLP1O-01..01-11-056DAI..GW133L0101103253NAGLP1O-01-01-11-057DALGW133LDB101103250NAGLPIO-01-01-11-058DALGW133LLS101103265NCGLP1001.01-11-059DALGW133LMS101103355NCGLP1O010111060DALGWI33LHS1011031190941AverageConcentration(ng/mL)±%RPD252ngfmL±1.2%NA=Not ApplicableNC=NotCalculated;Endagenoussampleconcentrationgreaterthan2xspikelevel.Page2lof53Table21.DALGWI34RIOIIO5GLP1001-01;InterimReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationArea-November2010PFOAConcentration3MLIMSIDDescription(ng’mL)%RecovefyGLP1O-01-01-11-061DALGWI34RO1OI1O51640NAGLPIO-01-01-l1-062DALGW134ROB1O1IO51490NAGLPIO-OIM1-11-063DALGW134RLS1011051620NCGLP1O-O1-01-11-064DALGWI34RHS101105225069.1AverageConcentration(ng4nL)±%RPD1570ng’mL±9.6%NANcApplcat4eNC=NotCalculated;Endogenoussampleconcentrationgreaterthan2xspikelevel(1)Fieldmatrixspikedidnotmeetmethodacceptancecriteriaof100%±30%.Table22,DALGW134S101105PFOAconcentmiion3MLIMSIDDescription(ng’mL)%Recove,yGLP1O-01-01-11-065DALGW134.S01011055.64NAGLP1O-01-01-11-066DALGWI34SDB1011055.34NAGLPIO.01-O1-11-067DALGW134SLS1OIO56.95NCGLP1O-O1-01-11-068DALGWI34SMS10110515.6112GLP1O-O1-01-11-069DALGW1S4SHS1OI1O510297.4AverageConcentration(nq/mL)±%RPD5.49nWmL±5.5%NA=NcApp4cableNC=N±Calo.ialed:Endogenoussampleconcentrationgreaterthan2xspikelevel,Table23.DALGW134L101105PFOA JConcentration3MLIMSIDjDescription(n’mL)%Recove,yGLP10-O1-01-11-70DAI..GW134L0101105523NAGLPIO-01-01-11-071DALGWI34LDB101105516NAGLP10-0101-114)72DALGWI34LLS1O11O5530NCGLP1O-O1-01-11-073DALGW134LMS101105599NCGLP1O.01.01-11-074DALGWI34LHS101105139087.8AverageConcentration(n’mL)±%RPD520nWmL*1.3%NA=NotApphcaeNCNotCalculated;Endogena.Jssampleconcentrationgreaterthan2xskelevelPage22 of53Table24.DALGW135R101105GLP100101;InterimReport11AnalysisofPFOAinGroundwaterFormerSludgelncorporauonAreaNovember2010________________________PFOA_______Concentration3MLIMSIDDescription(ng’mL)%RecovwyGLP1GO1’0111-075C)ALGW135RO1O1IO52930NAGLP10101i147DALGW135RDB1O11O52890NAGLP1O.0l-0l-l1-077DALGW135RLS1O11O52930NCGLP1O-O1-01-11-078DALGW135RHS1011053840NCAverageConcentration(ng/mL)*%RPD2910n’mL±1.4%“NANotApplicableNC-NotCalcUated;EndogenoussampteccnlraUorgreaterthan2xspikelevel(1)SamplInglocationdidnothaveanappropnatespikeleveltoevaluatePFOArecovery.Table25,DALGW135S101105________________________PFOAConcentration3M LIMSIDDescription(n’mL)%RecoveyGLPIO-O1-01-11-079DALGW135SO101105139NAGLP10-0101-11-080DALGW135SD810110513.4NAGLP1O-0101-11-081DALGW1358LS10110514,5NCGLPIO-01-01-11-082DALGW135SMS1O11O524.2106GLPIO-01.01-11-083DALGW135SHS1O1IO511097.2AverageConcentration(nnL)±%RPD13.7n’mL±3.7%NANotAçpeicableNCNotCalaiated;Endogenoussampleconcentrationgreaterthan2xspicelevelTable26.DALGW135L101105PFOA_______Concentration3MLIMSIDDescription(ngfmL)%RecoveryGLP10-0101-11.084DALGW135LO101105124NAGLP10-01-0111085DALGW135LDB101105121NAGLP10-01.01-11086DALGW135LLS101105129NCGLP10-01-01-11087DALGWI35LMS1O11O5228104GLPIO-01-01-11-088DALGWI3SLHS1011051070958AverageConcentration(ngfmL)±%RPD123n’mL±Z4%NA-NotApplicableNCNotCakxIated;Endogenoussampleconcentrationgreaterthan2xspikelevel.Page23of53GLP1O-01-0l;InterimReport11MalysisofPFOAinGroundwaterFormerSludgeIncorporationArea-November2010Table27.DALGW136S101103PFOAConcentration3MLIMSIDDescription(ng’mL)%RecoveiyGLP1O-01-01-11-089DALGW136S010110373.9NAGLPIO-01-01-11-090DALGW136SDB10110376BNAGLP1O-01-01-11-091DALGW136SLS1O11O377.6NCGLP1O-01-01-11-092DALGWI36SMS10110386.1NCGLP1O-01-01-11-093DALGW136SHS1O11O3166915AverageConcentration(nmL)±%RPD75.4n’mL±3.8%NA=NotApplicableNCgNotCalculated;EndogenoussampleCnrtationgreaterthan2xspikelemLTable28.DAL(3W136L101103PFOAConcentration3MLIMSIDDescription(ng’mL)%RecovesyGLP1O.Oi-01-11-094DALGW136L010110374,1NAGLP1O-01-01-11-095DALGWI38LDB1OI1O376.4NAGLP1O-01-O1-11-C98DALGWI38LLS10110386.2NCGLPIO-01-C1-11-0G7DALGW136LMS1O1IO316994.8CLP1O-01-O1-11-098DALGWI36LHS101103103096.3AverageConcentration(nnL)±%RPD75.3n.fmL±3.1%NANotApplicableNC-NotCaI4ated;Endogenoussampleconcanirationgreaterthai2xspikeIevd.Table29.DALGW‘t37S101109F’FOAConcentIon3M LIMSIDDescription(n’mL)%RecovesyGLPIO-01-01-11-099DALGW137SOIO11O90.273NAGLP1O-01-01-11-100DALGW137SDB1OI1O90.268NAGLP10-01-0111-101DALGW137SLS1011090.350NCGLP1O-O101-11-102DALGW137SMS1011091.32108GLPIOQ1-Q1-11-103DALGW137SHS1O11O910,9107AverageConcentration(ngfmL)±%RPD0.271n’mL±1.8%NANotApplicableNCNotCalcJated;Endogenoussamp4econcentraliongreaterthan2xspikelevel.Page240153Table30.DALGW137L101109GLP1O-014)1:InterimReport11MalyssofPFOAinGroundwaterFomerSludgeIncorporationArea-November2010PFOANA=NotAppcabNC=NotCalculaledEndogenoussampleconcitriongreaterthan2xsp4kelevel.Concentralion3MLIMSIDDescription(ng/mL)%RecoveiyGLP1O-01-01-11-104DALGW137LOIOI1O90.360NAGLP1O-01-01-11-105DALGW137LDB1011090.361NAGLP1O-01-01-11-108DALGWI37LLS1011090.458NCGLP1O-01.01-11-107GALGW137LMS1011091,40105!GLP1O-01-01-11-108GALGW1371KS10110910.7104A’w8qeConcentration(nq/mL,)±%RPD0.361nWmL±0.28%NA=NotApplicableNCNotCaated;Endogencussanleconcentrationgeaterthan2xsplicelevel.Table31.DALOW138S101110.PFOA_______Concenti’atlon3MLIMS10Description(ng’mL)%RecoveryGLP1O-01-01-11-109GALGW13850101110149NAGLP10-1-01-11.-110GALGW 138SGB101110144NAGLP1O-01-01-11-111DALGWI38SLSIOIIIO162NCG1.P10-0101-11-112GALGW1385MS10111023084.3GLP1O-01-01-11-113GALGW138$KS101110102086.1Ave,geConcentration(ng4,,L,)*%RPD147,g/mL±3.4%NANotApØcableNC=NotCaiaAated:Err.iogenoussanteccn*ationgreaterthai2xspikelevel.Table32.DALGW138L101110PFOAConcentration3MLIMSIDDescription(ng’mL)%Recove,yGLPIO-01-01-11-114GALGW138L0101110119NAGLP1O-01-01-11-115DALGWI38LDB1OII1O1.12NAGLP10-0101-11-118OALGWI38LLS1OI11O124NCGLP1O-01-01-11-117DALGW138LMS1011102 18103GLPIO-01-01-11-118DALGWI38LHS10111011.2101Average ConcentrationLnwPi1±%RPD1.16nmL±6.1%Page25of53Table33.DALQWCW26R101110C3LP10-0101;InterimReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationAreaNovember2010________________________PFOA________Concentration3M LIMSII)Description(n(mL)%RecoveryGLP1C-O1-0l-11l19DALGWCW26RO1O111O382NAGLP1C-01.01-11-120DALGWCW26RDB101110389NAQLP1O-01-Q1-11-121DALGWCW26RLS101110395NCGLP1C-01-01-11-122OALGWCW26RMS101110450NCGLPIO-O1-01-11-123DALGWCW26RHSIO11IO1290913AverageConcentration(ng’mL)±%RPD386n’mL±1.8%NA=NotApplicableNC=NotCalcJated;Endogenoussampleconcentrationgreaterthan2xspikeleveLTable34.DAt.GWCW26L101110PFOA______Concentration3MLIMSIDDescription(ng(mL)%Recove,yGLP10-01-41-11-124DALGWCW26LO1OI1IO565NAGLP1O-01-01-11-125DALGWCW2SLOB101110539NAGLP1O-01-01-11-126DALGWC6LLS101110552NCGLP1O-01-01-11-127CALGWCW26LMS101110623NCGLP1O-01-01-11-126DALGWCW26LHS101110148093.6AverageConcentration(ng4nL)±%RPD552ng/mL±47%NA-NotApplicableNC=NotCalculated:Endogenoussampleconcentrationgreatthan2xspikeleveLTable35.DALGW140R101104PFOA_______Concentration3MLIMSIDDescription(n’mL)%RecoveryGLP1O-01-01-11-129OALGW14ORO1O11O4121NAGLP10-01-1-11-130DALGW14CR08101104120NAGLP1001.01-11-131CALGWI4ORLS101104128NCGLP100101-11132!OALGW14CRMS10110421797.4GLP10-0101-11-133DALGWI4ORHS1011049738&0AverageConcentration(ng/mL)±%RPD121nqfmL±0.83%NANotApplicableNCNotCalculated;Endogenoussampleconcentrationgreaterthan2xspikelevelPage26of53Table36.DALGW141R101110GLPIO-01-01;InterimReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationAreaNovember2010[______________PFOAConcentration3MLIMSIDDescription(ng/mL)%RecovetyGLP1O.01-01-1l-134DALGW141R01011102.13NAGLP1O-01-01-11-135DALGW141RDS1011101.55NAGLPIG-01-01-11-136DALGW141RLS10111011.496.5GLPIO-01-01-11-137DALSW141RMS10111096594,5GLP1O-01-01-11-138DALSW141RHS10111090891.4AverageConcentration(ng/mL)±%RPD1.84ng’mL±10%NANotApplicableNC-NotCalculated;Endogenoussarrleconcentrationgreaterthan2xspikeleveLTable37.DALGWt42R101110PFOAConcentration3MLIMSIDDescription(nfn,L)%Recove,yGLP1O-01-01.11-139DALGWI42ROIO1IIO46.5NAGLP1O-el-O1-11-140DALOW142RDB1011104.8.7NAGLP1O-O1-01-11-141DALGW142RLS10111055.3NCGLP1O-01-01-11-142DALGW142RMS10111014396,3GLP1O-01-01-11-143DALGW142RHS10111092588.5AverageConcentration(nlmL)±%RPD47.6ng’mL±46%NA—NotApplicableNCNotCalculated;Endogenoussampleconcerrabongreaterthan2xspikelevel.TabLe38.DALGW144R101110PFOAConcentration3MLIMSIDDescription(n,,L)%RecoveryGLPIO-01-01-11-144DALGWI44RO1OII1O57,2NAGLP1G-01-01-11-145DALSW144RD810111057.3NAGLP1OO1-01-11-146DALSW144RLS10111067.6NCGLPIO-01-01-11-147‘DALSW144RMS10111014285.5GLP10O1-01-11-148DALSW144RHS10111096691,7AverageConcentration(ng’mL)±%RPD57.3nge’mL±0.17%NA=NotApplicableNCNotCalculated;Endogenoussarrpleconcentrationgreaterthan2xsplkelevel.Page27of53Table39.TripStankIGLP1O-01-01;InterimReportIiAnalysisofPFOAinGroundwaterFormerSludgeIncoporationArea-November2010PFOAConcentration3MUMSIDDescription(nJmL)%RecoveyGLP1O-01-O1-11-150TRIPBLANK10<0.0250NAGLP1O-01-01-11-151TRIPBLANK1LS1.08109GLP1O-01-01-11-152TRIPBLANKIMS10.6107GLP1O-01-01-11-153TRIPBLANK1MHS99.1100GLPIO-01-O1-11-154TR1PBLANKIHS1040105NA=NatApplicableTable40.TripBlank2PFQAConcenbitIon3MLIMSIDDescription(nglmL)%Recove,yGLP1O-01-O1-11-155rRIPBLANK20<0,0250NAGLPIO-01-01-11-156TRIPBLANK2LS1.08109GLPIO-01-01-11-157TRIPBLANK2MS10.9110GLPIO-01-01-11-158TRIPBLANK2MHS96.997.8GLP1O-01-01-11-159RIPB1ANK2HS1020103NA=NotApphcatAeTable41.TripBlank3PFOAConcentration3MUMS10Description(ng’mL)%RecovesyGLP1O-01-01-11-160TRIPBLANK30<0.0250NAGLPIO-01-01-11-161TRIPBLANK3LS1.07108GLP1O-01-01-11-162TRIPBLANK3MS10.4105GLP1O-01-01-11-163TRIPBLANK3MHS1011021GLP1O-01-01-11-164TRIPBLANK3HS1050106NA=NotApØicablePage28of53Table42.TrIpBlank4GLP1O-01-01;lntenmReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationArea-November2010__________________PFOAConcentration3MUMSDDescription(ng’mL)%Recove,yGLP1O-Ol-0l-11-165TRIPBLANK4O<00250NAGLP1O-O1-0l-11-166TRIPBLANK4LS106107GLP1O-01-O1i1-167TRIPBLANK4MS10.4105GLP1O-01-01-11-168TRIP8LANK4MHS95.496.3GLPIO-O1-01-11-189TRIPBLANK4HS985994NANotApicableTable43.RinseateBlanksPFOAConcentration3MLIMSIDDescription(ng’mL)%Recove,yGLPIO-O1-01-11-016DALGW130LRB101105<00250NAGLP1O-01-01-11-149DAt..GW144RRB101110<00250NAGLP1O-01-01-12-009DALSS607RRB0040<00250NANA=NotAppficabePage29of53GLP1001-01:InterimReport11AnalysisofPFOAinGroundwaterFormerSludgelncorporaUoriArea-November2010-—10ConcIusIon-—————Laboratorycontrolspikes andl9eldmatrixspikeswereusedtodeterminetheanalyticalmethodaccuracyandprecisionforPFOA.Analysiswassuccessfullycompletedfollowing3MEnvironmentalLaboratorymethodETS4-044.Odescribedherein.Allremainingsamplesandassociatedprojectdata(hardcopyandelectronic)willbearchivedaccordingto3MEnvironmentalLaboratorystandardoperatingprocedures.-AttachmentA:ProtocolAmendment11(GeneralProjectOutline)Attachment8:RepresentativeChromatogramsandCalirationCurvesAttachmentC:AnalyticalMethod-ETS-8-O44OAttachment0:MethodDeviationPage30of53GLP1O-0I-01;IrierimReport11AnalysisofPFOAinGroundwaterFormerSludgeIncorporationArea-November20102/p/i01/—ClestonLange,Ph.D.,3MPrincipalAnalyticalInvestigatorDate0/IWilliamK.Reageri,Ph.D.,3MEnvironmentalLaboratoryManagerDate ,M12ttGaryHohetein,3MSponsorRepresentativeDate jQAIiLAiJaisirnhaKStudyDirectoratePage31of53

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# ATTACHMENT 2

SOIL AND SEDIMENT SAMPLING

TECHNICAL PROGRESS R EPORT

JANUARY 1, 2011

– MARCH 31, 2011

# J: \ FOLDERS.0 -9\3M- DECAT \ Phase 3 Work Plan \ 1Q11 Status Report \ 1Q11 Status Report FINAL.doc 4/28/2011



# Att 2 -1 SOIL AND SEDIMENT SAMPLING

TECHNICAL PROGRESS REPORT

3M AND DYNEON DECATUR, ALABAMA

The following subsection desc ribes soil and sediment sampling activities completed

during the first quarter of 2011. The analytical results will be summarize d in a subsequent

quarterly status report

OFF

- SITE ACTIVITIES

On

- Site Avenue A Area Sediment and Soil Sampling

Twenty six locations within the Avenue A area were sampled between January 26 and 28,

2011. The 26 locations are identified on Figure 1. Soil samples were collected at 20 of these

locations and sediment samples were collected at the remaining 6 locations. At all twenty

six locations the following samples were collected using a hand auger: surface soil/sediment

(0

– 0.5 ft), shallow subsurface soil (0.5

– 1.0 ft) a nd subsurface soil (1.5

– 2 ft)

.

Eleven of the soil sampling locations (SS10

– SS20) were established within the fire

training area. These samples were collected in order to better d efine the lateral extent of

PFOA distribution in the vicinity of the fire training area

.

Nine soil sampling locations (SS21, SS22 and SS24

– SS30) and six sediment sampling

locations (S D18 – SD23) were located within the marsh area to the west of the closed

landfill area. These samples were collected to better define the lateral extent of the PFOA

distribution associated with the drainage feature. At the time of sampling most of the

sedi ment sampling locations were inundated and thus sediment was collected using

disposable sample scoops, stainless steel hand augers, and polyethylene tubing. Two of

the soil sampling locations in the marsh area were sampled for groundwater; this

sampling is discussed in Attachment 1.

The Avenue A assessment is intended to obtain additional data for the Remedial Action

Agreement Program being undertaken by 3M under the ADEM NPDES program and is

# J: \ FOLDERS.0 -9\3M- DECAT \ Phase 3 Work Plan \ 1Q11 Status Report \ 1Q11 Status Report FINAL.doc 4/28/2011



# Att 2 -2 not a MOU

- related activity. The analysis of samples was not completed in time for the

March 31, 2011 Quarterly Status Report and will be discussed in a subsequent report.

# ! ( ! ( ! ( ! (

! ( ! (

! (

! (

! ( ! ( ! (

! (

! ( ! ( 

# # * # *

# * " / 

# # * ! (

" / ! (

! ( ! ( 

# # * # * 

# Tennessee River Finley Island Road

State Docks Road 

# Avenue A

Closed

Landfill SD19

SD20

SD23 SS28 SS27

SS22 SS21

SS24

SD26 SD21

SD22

SS25 SS30 SS29 SS19 SS12 SS20 SS18 SS17 SS14

SS15

SS13

SS16 SS10

SS11

SD18



# μ

0 500 250

Feet



# 3M Decatur, AL Facility 

# Figure 1

Additional Avenue A

Soil and Sediment Sampling

January 2011

File: \\fsfed01\tig\3MDec\MXD\Additional_AvenueA_sampling.mxd, 22-Apr-11 15:32, ricksc Imagery Source:

ESRI, i-cubed, USDA FSA, USGS, AEX,

GeoEye, Getmapping, Aerogrid, IGP. 2010 

# Legend



# # * Sediment Sampling Locations



# ! ( Soil Sampling Locations



# " / Soil Sampling/Groundwater

Sampling Locations