- - - PFOS: A PILOT REPRODUCTION STUDY WITH THE NORTHERN BOBWHITE FINAL REPORT WILDLIFE INTERNATIONAL,LTD.

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AR226-2313 y David M Rurak 03/16/2003 07:01 PM To: cc: Subject: Catherine A Barton/AE/DuPont@DuPont Martc C Hause/DuPontQDuPont.

AR226-2486 ^ David M Rurak 09/06/200201:11 PM To: cc: Subject: Robert F Pinchot/DEV/AE/DuPont@DuPont Environmental coordination _...TM_-^-- Foiwarded by David M Ruralt/AE/DuPont on 09/OS/2002 01:10 PM -- /^ Uma Chowdhry 08/28/2002 11:16 AM To: cc: Subject: David M RRuurraaklv/AAEE//ODuuPPoormrt@@UDuuPPoonntt Environmental coordination Dave, I hear you are the env coordinator for the C8 issue.

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The exemption application of perfluorosulfonic acid(PFSA) resins and perfluorocarboxylic acid(PFCA) resins and ion exchange membranes for chlor-alkali industry Xinjiang Zhongtai Chemical Co., Ltd. is located in Urumqi, Xinjiang, It is founded in 2001, and is one of the world's top 500 companies as well as the largest chlor-alkali manufacturer of ion exchange membrane process in China.

The exemption application of perfluorosulfonic acid(PFSA) resins and perfluorocarboxylic acid(PFCA) resins and ion exchange membranes for chlor-alkali industry Ningxia Huayu Chemical Co., Ltd, which founded in December 2009, is located in Zhongwei Industral Park, Shapotou District, Zhongwei City, Ningxia Hui Autonomous Region.

AR226-2594 .^ ^y KatherinB L Davis 08/23/2002 11:31 AM To: cc: Subject: Andrew S Hartten/AE/DuPont@DuPont, Mark Houlday/AE/DuPorrtQDuPont, Tobin D Lounsbury/AE/DuPontQDuPont, Michael P ShBrri8r/AE/DuPont@DuPont, J Stephen Opp/AE/DuPont@DuPont.

"McCrea, Deborah" <mccrea@taftlaw.com> 03/06/2009 02 :34 PM Taft I Deborah McCrea / Legal Assistant Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800 Cincinnati, Ohio 45202-3957 Tel : 513 .381 .2838 " Fax : 513 .381 .0205 www.taftlaw.com / mccrea@taftlaw .com To NCIC OPPT@EPA cc "Bilott, Robert A."

BACK BIODEGRADATION TEST SUBSTANCE Identity: Remarks: N-Ethylperfluorooctanesulfonamide; may also be referred to as NPFOSA, EtPOSA, F-6309, or FX-12. (1-Octanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-ethyl-, CAS # 4151 50-2) N-EtFOSA was a white solid.

BACK BIODEGRADATION TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or C8F i7SO3"K+. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: PFOS was a white powder.

Medicine, Health Physics Industrial Hygiene, Toxicology 3M Medical Department 3M PO Center, Building Box 33220 222200--22EE--0022 f t !

ARa%-olHl 3M MEDICAL DEPARTMANT CORPORATE TOXICOLOGY To: John Butenhoff Andrew Seacat From: Marvin Case Date: 5 April 2000 Subject: Liver Slide Review I have completed my microscopic review of the liver sections of the 14-week sacrifice rats on the PFOS chronic study.

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