CONFIDENTIAL 3,585 38 -- Seiet E. 1. pu Pont of Nemours & Company WILMINGTON, DELAWARE 19898 cc: 8B. 4W.

BIODEGRADATION (OECD 301 E) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component of FC-206CE. (1Octanesulfoniaccid)(CAS # 2795-39-3).

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OIFN V3ITRCOHMMPIACNYR'OSBIOCLOOMGBIOCUANLD TM-U3T6A5G1ENICITY ASSAYS mite' .

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-- AR 226 _ 0909 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 FX-3103.

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\ AR226-2392 ; ^ D u P o (t t TOs CCs ROGER 2IPFEL JOHN CRUM INTEROFFICE MEMORANDUM Dates Froms l2-Mav-19B7 03;06pm EST TONY PLAYTIS PLAYTI8 Oepti Tel Not TEFTECH 2775 ( ZIPFEL ) t CRUM ) Subjects C8 In Water Attached is a copy of the analytical report for our five water samples, which are identified as follows

JEFFERSON MEDICAL COLLEGE of THONTAS JEFFERSON UNIVERSITY Daniel Baugh Instituteof Anatomy Department of Anatomy Office of the Directorand Chairman Philadelphia, 19107 (215) 928-7820 November 12, 1982 Dr.

Experiment No.: Conducted At: Dates Conducted: Conducted By: Primary Skin Irritation Test with T-3608 in Albino Rabbits 0984EB0368 Pathology and Toxicology Riker Laboratorier., Inc.

BIODEGRADATION TEST SUBSTANCE Identity:Perfluorodecanesulfonatea,mmonium salt;may also be referred to as PFDS, FC-121-X, or 3M Sample E2112 and E2566-1.