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AR226-1914 DuPont Global PFOA Strategy Comprehensive Source Reduction Presentation to EPA January 31, 2005 Company Sanitized Contains No TSCA CBI Purpose Present a comprehensive risk management approach for PFOA based on source reduction - DuPont commitment - Global impact - Voluntary actions - Work in progress for some elements - Open dialogue with EPA on this approach Page 2 January 31,2005 Company Sanitized Contains No TSCA CBI Topics for Discussion Comments on overall approach to mitigation?

H18636: Slide Review of pancreas lesions from DuPont APFO Study Date of Review: 28thNovember 2001-11-29 Reviewing Pathologists: Dr E E McConnell and Dr J R Foster Study No: HN-18636 Study Tide: Combined Chronic Toxicity/Oncogenicity Study with Linur-on, C8 and Wyl4,643.

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AR226-2020 DuPont Washington Works P.

AR226-2048 / / Ta-Wei Fu 07/30/2001 08:01 AM .

AR226-2049 Voluntary UEIP, Ammonirun Perfluorooctanoate Voluntary Uso and Exposure Information Profile Ammonium perfluorooctanoate (APFO) I.

AR226-2162 H David Ramsey ' 07/16/2001 11:02 AM To: Dawn D Jackson/CL/DuPont@DuPont, George A Ainsley/SE/DuPont@DuPont cc: Subject: FW: Call From Jesse Flanshaw Three key notes - there are some of us who prefer the State and 1both conduct modeling so it is more independent -------------------------------Forwarded by H David Ramsey/SE/DuPont on 07/16/2001 11:01 AM John J Mentink 07/10/2001 08:30:49 AM To: H David Ramsey/AE/DuPont@DuPont cc: Subject: FW: Call From Jesse Hanshaw This is the note originally issued by Chris Shoop.

AR226-2183 ,,G Debbie J M ulrooney |... 08/22/2001 02:51 PM < To: Catherine A Barton/AE/DuPont@DuPont cc: Subject: Fayetteville Report Cathie, Rob noted that we left a space for particle size information, but neglected to actually include the information.

AR226-2218 Chris E Shoop 11/29/2001 09:06 AM To: Debbie J Mulrooney/AE/DuPont@DuPont cc: Subject: Re: Revised Spreadsheet O Debbie, The semiworks facility has been operating since long before the permitting regulations were in place.

AR226-2309 ^ Mark C Hause 03/12/2003 04:25 PM To: David M Rurak/AE/DuPont@DuPont cc: Catherine A Barton/AE/DuPont@DuPont, Charles J Zarzecki/AE/DuPont@DuPont Subject: ISC Model Dave, Per our discussion, I have spoken with Cathie on the need to investigate the model and its validity for 1 and 8 hour periods.

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