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3500 (TR 52k | AR 226 _ (042 DuPont Product Stewardship Update United States Environmental Protection Agency 17December 2001 R.

Ap226- [0SS THE OCCURENCE OF PERFLUOROOCTANOATE IN ENVIRONMENTAL, DIETARY AND HUMAN SAMPLES 1 on PREPARED BY: " THE ASSOCIATION OF PLASTIC MANUFACTURERS IN EUROPE (APME) AD HOC APFO TOXICOLOGY WORKING GROUP VERSION 1: JANUARY, 11 2002 a.

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ff oCo o Attn: Bill Weppner and Dan Hakes, 3M 4fio[2000 em From: Cartes A AR ARE - 0633 Dear Bill and Dan, s1 ufbomuinsdsitoodnoafy'tsespthodnaetacailnl3usMesfulpoisnsheeslspiionngotrocsonhtarroplenonantdheclpaerrifflyusooromcehoefmiocuarlspraisordiitsycunseseedds ifnor my email message of April 7, 2000.

3M Environmental BACK TO MAIN Laboratory Report No.

BACK TO MAIN WATER SOLUBILITY IN PURE WATER- SHAKE FLASK METHOD TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The test substance is a white powder.

BACK BIODEGRADATION TEST SUBSTANCE Identity: Remarks: Perfluorooctanesulfonamide; may also be referred to as FOSA or F-10105 (1-Octanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro, CAS # not available) FOSA was a light yellow waxy solid.

TL 3M General Offices Su oon rad mpgs genq- 0704- 15607 3M Certified Mail AL - 80S July 6, 2004 Document Processing Center OEUfPSfAitceEraoasftP-olRlouodomn6P4r2e8veAntttin:onSaencdtiToonx8i(cs) W1a2s0h0iPnegninosnylDvCani2a04A6v0e-n0u0e01NW RE: TprSoCtAci8v5e)maSteUrBiaSlTANTIAL RISK NOTICE ON: Dear Sirs: ItnauchreJdu,neM28,d2s0c0u4s,esdubsmoimsesisounpgplaermdeintnagltihnefosrmuatbion.testEnsucblsotsaendcepl(epsleesnedsee CD containing the supplemental report "Augmented acute (4-hour) inhalation toxicity study with T-7875 in rats."

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AR226-2110 ^ Test Results -?

AR226-2220 FB^ ^,^ C.L : Ron J Buchanan 11/29/2001 10:45 AM To: cc: Subject: Robert F Pmchot/DEV/AE/DuPont@DuPont Debbie J Mulrooney/AE/DuPontODuPont, Steven L Grise/AE/DuPont@DuPont, Mary A Kaiser/AE/DiiPont@DuPont.

AR226-2561 September 4, 2001 Samantha P.

AR226-2572 ?