INTERIM REPORT #22 - Analysis of Soil 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 October 2,2006 PERFORMING LABORATORY Exygen Research 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: 244435 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: 03/06/2006 Signature Name: Richard C.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244963 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: 03/23/2006 Signature Name: Richard C.

ftR A & 6 - 0 7 4 8 READY BIODEGRADATION (OECD 301E) TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

AR&9.6 _ OSOO m ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206A. (1Octanesulfonic acid) (CAS # 2795-39-3).

Wia.6-ozod ACUTE TO XIC ITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE_________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

A H A A 6 - O iS G ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) 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).

/ R 6 _ 0 9 5 & UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460 SEP - 5 20U OFFICE OF PREVENTION, PESTICIDES AND TOXIC SUBSTANCES Mr.

AKlK> _ I07 'fi\2 m & d - k o UNITED STATES ENVIRONMENTAL PROTECTION WASHINGATGOENNDC.YC., 20460 APR %5 2 ro OFFIC " F PREVENTION, P CIDES AND TOXIC SU \NCES NOTE SUBJECT: Summary of March 7, 2001, meeting with Fluoropolymer Manufacturing Group TO: AR-226 FROM: Mary F.

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3M ENVIRONMENTAL LABORATORY REPORT NO.

3 GLP10-01-02 Interim Report 21: Analysis for PFOS, PFHS and PFBS in Decatur, AL Soils Collected from Well Location 610 in August, 2011 Study Title 3M Environmental Laboratory Analytical Protocol GLP10-01-01: 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 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 West Chester, PA 19380 Phone: 610-701-3761 Principal Analytical Investigator Cleston C.

3M ENVIRONMENTAL LABORATORY REPORT NO.

3M General Offices 3M Center St.