INTERIM REPORT # 6 - Analysis of Liver and Serum Samples STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFOS) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using LC/MS/MS for the 3M Decatur Monitoring Program DATA REQUIREMENTS EPA TSCA Good Laboratory Practice Standards 40 CFR 792 STUDY DIRECTOR Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 INTERIM REPORT COMPLETION DATE April 23, 2008 PERFORMING LABORATORY MPI Research, Inc. 3058 Research Drive State College, PA 16801 Phone: 814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244964 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 03/23/2006 Signature Name: Richard C.

/)R 6 _ 0-713 BIODEGRADATION (OECD 301 E) TEST SUBSTANCE Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203. (1Octanesulfonic acid) (CAS # 2795-39-3).

M SLSlG - 0 2 6 0 ACUTE TOXICITY TO AQUATIC INVERTEBRATES (ACARTIA TONSA) TEST SUBSTANCE______________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-603EF. (1Octanesulfonic acid) (CAS # 2795-39-3).

BIODEGRADATION (BOD/COD) TEST SUBSTANCE ___________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of L-4647. (1Octanesulfonic acid) (CAS # 2795-39-3).

y)R 6 _ 0930 TSCA NCIC Notification Form for CBI Documents ElVED Docket Number: _ ft I?

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3M GLP10-01-02; Interim Report 11 Analysis o f PFBS, PFHS, and PFOS In Groundwater Former Sludge Incorporation Area - November 2010 GLP10-01-02: Interim Report 11 - Analysis o f PFBS.

f GLP10-01-02; Interim Report 22 Analysis of PFBS, PFHS, and PFOS in Groundwater 3rd Quarter Sampling - 2011 GLP10-01-02; Interim Report 22 - Analysis of PFBS, PFHS. and PFOS in Groundwater Samples Collected from Decatur.

3 GLP10-01-02 Interim Report 25: Analysis of PFOS, PFHS and PFBS in Sediments Collected from the Jeffries Property Study Title 3M Environmental Laboratory Analytical Protocol GLP10-01-02: Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sediment for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way W est Chester, PA 19380 Phone: 610-701-3761 Principal Analytical Investigator Cleston C.

3M Environmental Laboratory P0003268; Interim Report#2 Analytical Report Analysis of PFBS, PFHS, and PFOS from 3M Decatur Offsite Sediment Samples Interim Report #2 MPI GLP Protocol Number P0003268 Data Requirement 40 CFR Part 792 Author Michelle D.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 239579 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Sue Stefanosky Date: 09/09/2005 Signature Name: Richard C.

CoSlcThLesBteurr,liVngetromnont Extended Data Package SDG: 117633 Case Narrative Chain of Custody................................................................................................

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