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&x6 ACUTE TO XICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FX-3103. (1Octanesulfonic acid) (CAS # 2795-39-3).

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fft-oao/-/37< ail 2-z6_ /ozr ___ <P UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460 February 14, 2001 OFFICE OF PREVENTION, PESTICIDES AND TOXIC SUBSTANCES DuPont Haskell Laboratory Attn: Gerald L.

NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 TAFT, STETTINIUS & HOLLISTER LLP 425 WALNUT STREET, SUITE 1800 CINCINNATI, OHIO 45202-3957 513-381-2838 FAX: 513-381-0205 www.taftlaw.com 4 R & & G - llf-lf- CLEVELAND OHIO OFFICE 3500 BP TOWER 200 PUBLIC SQUARE CLEVELAND, OHIO 44114-2302 216-241-2838 FAX. 216-241-3707 COLUMBUS, OHIO OFFICE 21 EAST STATE STREET COLUMBUS, OHIO 43215-4221 614-221-2838 FAX:614-221-2007 Ro b e r ta .

Internal Correspondence de: M.

AR *5 6 -o s y ^ ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE___________________________ Identity: A mixture containing perfiuorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

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A R A 2.6 - 085 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-603F. (1Octanesulfonic acid) (CAS # 2795-39-3).

- & 995 TSCA NCIC Notification Form for CB!

Andrea V.

6 0 P- 31 October 2003 AR226-1642 To: Mary F.

3M GLP10-01-02; Interim Report 06 Analysis of PFBS, PFHS, and PFOS In Water Samples from Decatur, AL June/July 2010 GLP10-01-02: Interim Report 06 - Analysis o f PFBS.

GLP10-01-02.

3 GLP10-01-02 Interim Report 15: Analysis for PFOS, PFHS and PFBS in Decatur, AL Avenue A Soils and Sediments Collected January 2011 Study Title 3M Environmental Laboratory Analytical Protocol GLP-10-01-02: 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 West Chester, PA 19380 Phone: 610-701-3761 Principal Analytical Investigator Cleston C.