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A X > 6 'I 8 S ^ Toxicological Summary PFOS Dietary Chronic Definitive Reproductive Study: Northern Bobwhite 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-heptadecafluoro, potassium salt.

AR226-2103 Test Results Sample Data Range Concentration Range A ction Level Industrial Hygiene 1/1/94 12/31/94 100% Sample Dt Sam ple# D uration Type Employee Mama BTO: 08 LO C: 113 TEFLON P /S - SHIFT MECHANIC (58MD) 2/2/94 19405 360 P 5/17/94 19813 390 P 8/26/94 20160 360 P 12/13/94 20672 380 P Pere Chemical 5BMD C-8/FC-143 5BMD C-8/FC-143 58MD C-SZFC-143 58MD C-8/FC-143 BTO: 08 TEFLON LOG: 703 FINE POWDER PACKOUT ROOM 1/27/94 19338 370 P 08PJ C-8/FC-143 BTO: 08 LOC : 708 TEFLON P /S - FINE POWDER PACKOUT (06PJ) 1/27/94 2546 375 A 8/25/94 20153 390 P C-8/FC-143 08PJ C-8/FC-143 BTO: 08 LOC: 717 TEFLON ROOF AREA-GENERAL 1/28/94 8 8 380 A C-8/FC-143 BTO: 08 LO C: 731 TEFLON A /S -INSIDE F.P.

AR226-2188 ,3 Debbie J Mulrooney ' 08/23/2001 09:53 A M To: cc: Subject Chris E Shoop/AE/DuPont@DuPont Question on Source Spreadsheet Chris, I noticed that on the revised spreadsheet you added a column showing the fraction of P M that is C8.

AR226-2189 Chris E Shoop 08/24/2001 03:59 PM To: Debbie J Mulrooney/AEA)uPont@ DuPont cc: Roger J Zipfe!

AR226-2234 Steven L Grise 12/12/2001 03:26:26 PM To: Debbie J Mulrooney/AE/DuPont@DuPont cc: Bernard J Reilly/AE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@DuPont Subject: Re: C.O.

Katherine E.

AR226-3355 PHYSICOCHEMICAL PROPERTIES Or FLUOROTELOMER ALCOHOLS M ary A Kaiser ttryi P Cabranchi,3 Chien-Ping Chai K a o / Pan!

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Katherine E.

NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 /?

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Final Report Mortality of Employees of an Ammonium Perfluorooctanoate Production Facility Jessica I.

V January 9, 2009 Via Federal Express Document Processing Center (Mail Code 7407M) Room 6428 Attention: 8(e) Coordinator Office of Pollution Prevention and Toxics U.S.

Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800/ Cincinnati, OH 45202 3957 / Tel: 513.381.2838 / Fax: 513.381.0205/ www.taftlaw.com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Northern Kentucky / Phoenix / Beijing R5b1iolo3bt.t3e@r57tta.A9ft6.la3Bw8i.lcootmt March 20, 2009 mfi^si8z7Y *y TSCA Confidential Business Information Center (7407M) EU12P.S0A.0EEPnaevsnitrno-snRymloveoanmntiaa6l4AP2vr8eo,nteAucettt,ino:NnSWAegcetionncy8(e) & FYI Washington, DC 20460-0001 !