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AKlK> _ I07 'fi\2 m & d - k o UNITED STATES ENVIRONMENTAL PROTECTION WASHINGATGOENNDC.YC., 20460 APR %5 2 ro OFFIC " F PREVENTION, P CIDES AND TOXIC SU \NCES NOTE SUBJECT: Summary of March 7, 2001, meeting with Fluoropolymer Manufacturing Group TO: AR-226 FROM: Mary F.

Katherine E.

RECEIVED OPPT NCIC 2003 APR - 9 PH 2= 2 5 T R P Telomer Research Program 31 March 2003 Telomer Process Diagram for US EPA - OPPT AR6- lAG ASAHI GLASS COMPANY Clariant D AIK IN Contains no TSCA CBI Telomer Research Program Telomer Intermediate "Building Blocks" F(CFpCFP)nCH=CHp Telomer B Olefin __________________ F(CF2CF2)nCH2CH2OH Telomer B Alcohol Acrylate Monomer is the most common raw material used to create Finished Products F(CF2CF2)nCH2CH20C (0)C H =C H 2 Telomer Acrylate Monomer Vr V Finished Products a Actual process and manufacturing practices vary by company PFOA is not used or added in these processes Generally, these processes are closed and PFOA creation and/or emissions are expected to be at very low levels Telomer Research Program Telomerization was initially developed by the DuPont Company in the 1940`s for free-radical polymerization of ethylene.

Telom er Research Program AR226-1420 Report Title: 1-Decanol, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluoroAlga, Growth Inhibition Test with Scenedesmus subspicatus, 72h, Limit Test with the Saturated Solution Author(s): Dirk Scheerbaum RECEIVED OPPT NCIC 2003 July 18 12:00PM Contractor: Dr.

0PmMHatkal Ukarrtarv 1 BUS(B^hiBSSStSBUiB^iB RUbAob4 * O.Bm M Nbwb* D1I 71M W DuPont Haskell Laboratory G tn id L Ktnktdy Director, Applied Toxicology DuPont Haskell Laboratory P.O.

From: Bernard J P e d y on 10/07/2001 09 55 AM To Marttie t.

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Toxicological Summary PFOS Dietary Chronic Pilot 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-heptadecafluoropotassium salt, CAS# 2795-39-3 Test Remarks: The test substance is a white powder (3M Lot #217).

BACK TO MAIN 3M Comments Submitted to the EPA Science Advisory Board Perfluorooctanoic Acid Human Health Risk Assessment Review Panel (PFOA Review Panel) Click on Study Title to View Report John A.

Biennial Report for Emissions o f PFOA Calendar Year 2003 DuPont - Washington Works Biennial Report for Emissions o f PFOA Calendar Year 2003 DuPont - Washington Works Page 1 o f 2 /&y*y " Note: The information contained in this document is submitted voluntarily and may be subject tofuture revision and/or modification.

Katherine E.

AR226-2242 EDD0065180 4348500- C8 2000 Actual Emissions Annual Average Vapor Concentrations (ug/m3) 4348000- 4347500- 4347000- 4346500- 4346000 M44a0x0i0m0um con4c4e0n50tr0ation =4241.800005 ug/m344a1t540402135E,4442304060899N 442500 443000 443500 444000 --I 444500 EDD0065181 4348500- C8 Permitted Emissions Annual Average Vapor Concentrations (ug/m3) 4348000- 4347500- 1

AR226-2319 Charles J Zarzecki 04/02/2003 03:14 PM To: Catherine A Barton/AE/DuPont co: Subject: Beychok Article C a th ie , I finally was able to review the Beychok article on error propagation In dispersion m odeling.

REetiVBi nPPT MUtc '"i n'f * CO 'B8E " n March 27, 2006 ML??