M AS6 - 07- ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE___________________________ Identity: Mixture containing periluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203CF-X or FC-203CF. (1-Octanesulfonic acid) (CAS #2795-39-3).

A R SlA 6 _ 0 8 7 / BIODEGRADATION (OECD 301D) I ES31SUB5TAMCE____________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-780B. (1Octanesulfonic acid) (CAS # 2795-39-3).

U- HPf MSLSLb- 1033 M fa- z r V1 DuPont Chtmical Solutojuo Entirp P.O.Box 80023 Wilmington.

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mm ndrea V Malinowski Corporate Counsel DuPont Legal D-7078 1007 Market Street Wilmington, Delaware 19898 Phone: 302-774-6443 Fax: 302-774-4812 e-mail: Andrea.V.Malmowski@usa.dupont.com M l 2 6 - 132.7 _ 0603- 00315 Mr.

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r Afszb - \h-l*h 000161 DRAFT REPORT DRY RUN CREEK WASHINGTON, WOOD COUNTY, WEST VIRGINIA NOVEMBER 1997 PREPARED BY: Mark D.

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AR226-1744 STUDY TITLE Extraction of Potassium Perfluorooctanesulfonate from Red Blood Cells and Serum for Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREMENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher ANALYTICAL REPORT DATE June 2, 2003 PERFORMING LABORATORY / TESTING FACILITY Exygen Research 3058 Research Drive State College, PA 16801 Phone: 814-272-1039 STUDY SPONSOR 3M Environmental Technology and Safety Services Building 2-3E-09 PO Box 33331 St.