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I -- Corporate Health Physics CorerOpa esc P50 Corporate Occupational Medicine Corres ra hepato 5 Pek 351333020 Corporate Product Responsibility i fssmbiiy lm Corporate Toxicology iene pers 3M Medical Department 3MCemer, 220-2E-02 POBox 33220 St.

@ ETT JGiesy@aol.com 04/07/2003 11:08 AM : mim To: dlbacon@mmm.com wkreagen@mmm.com CO: Subject: paper Dale and Bill: I have a paper that has been submitted to Chemosphere on human blood by Olsen et al (3M).

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Hiempon Geary Olsen/US-Corporate/3M/US 10/01/2007 04:19PM 1To William K.

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Memo SR To: Via: From: Subject: _ John Stine, Environment] Health Division Director lige PLaamreylaGuSsht,ibEan,viHreoanletmhenRtiaslk SAusrsveesislmlaenncteUannidt ASsuspeesrsmveinstoSre,cftio+n Managerfauf A.pl Helen Gooden, Health Risk Assssme Un sf1f Hou Health Based Values for Perfluorooctanoic acid (PFOA) ATian re "PFOA be lowered to 0.5 ug/L (ppb).

@ K Tserwom.a JGiesy@aol.com 07/19/2007 09:47 PM Art opt, ft A great deal of speculation.