INTERIM REPORT #3 - Analysis of Fish and Clam Samples STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFOS) in Water, Soil, Sediment, Fish, and Clams 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 June 17, 2008 TESTING FACILITY 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.

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Attachments to Letter to C.

AR226-1030A034 Study Title Microbial Metabolism (Biodegradation) of Perfluorooctane Sulfonate (PFOS) I.

BACK TO MAIN Study Title Microbial Metabolism (Biodegradation) of Perfluorooctane Sulfonate (PFOS) I.

Taft/ Taft Stettinius & Hollister LLP 4 2 5 W alnut Street, Suite 1 8 0 0 / Cincinnati, OH 4 5 2 0 2 -3 9 5 7 / Tel: 5 1 3 .3 8 1 .2 8 3 8 / Fax: 5 1 3 .3 8 T V 0 2 0 5 /w w w .taftlaw .com C in cin n a ti/C lev e la n d /C o lu m b u s / Dayton / Indianapolis / Northern Kentucky / Phoenix/ Beijing Robert A.

Xff tifiAa- 63z May 2000 Organization for Economic Cooperation and Development Existing Chemicals Task Force Meeting PFOS Assessment Approach in OECD The recently circulated information on PFOS and its associated derivatives raises a number of important questions regarding this chemical technology and the appropriate steps to take in light o f the decision by the major manufacturer to phase out production for most uses during the current year.

RECEIVED OPPT HCIC 2002 JAN 10 AH 8 : 3 7 I UPS OVERNIGHT DELIVERY COMPANY SANITIZED.

3 ^ ff 3M Larry R.

PFOA 3M FLUOROCHEMICAL SUBMISSIONS February, 2002 - May, 2004 TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE Click on Study Title to View Report Perfluorooctanoic acid PAGE 1, 2 Pharmacokinetic Study 1.

BACK TO MAIN 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE May 2000 - October 2005 Click on Study Title to View Report PFOA Perfluorooctanoate Page 1, 2 1.

COMMENTS OF 3M COMPANY TO THE EPA SCIENCE ADVISORY BOARD PFOA REVIEW PANEL Contact: Geary Olsen, D.V.M., PhD.

/MSH6-/Z3S Toxicological Summary PFOS Dietary Chronic Definitive Reproductive Study: Mallard Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro, potassium salt.

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