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A = Minnesota Pollution CAognetrnocly Contents Contents Table 1 ...................... 2 ther evaluation 3 Further evaluation ..... 3 Celeuling LOS... 3 Calculating LD50 ....... 3 Appingknowiodgo 3 Applying knowledge .. 3 Sufficient knowledge Sufficient knowledge unavalabi.......3 unavailable ............. 3 Publanod momaions Published information 4 Tae?

@ 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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EEEEEE EAVIRGNAENTAL CONSULTANTS ENVIRONMENTAL COnSULtANTS Ome: Fabruay 17,2008 Date: February 17, 2006 To: Dole Bacon, 3M To: Dale Bacon, 3M From: John Giesy, ENTRIX nc.

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EEvvaalluuaattiioonn ooff PPeerrfflluuoorroocchheemmiiccaall RReemmoovvaall bbyy aa SSmmalalll,, IInn--hhoommee FFiilltteerr Background: aOn behalf of the Minnesota Pollution Control Agency (MPCA} and Minnesota Department of Health ((MMDDHH)),, W Weesstt CCeennttrraall EEnnvviirroonnmmeennttaall CCoonnssuultltiinngg ((WWCCEECC)) tteesstteedd aann iinneexxppeennssiivvee aanndd eeaassyy ttoo iinnssttaallll ccaarrbboonn filter to determine how well it removes perfluorochemicals (PFCs) from drinking water. iVletho~l: WCEC tested a PUR faucet mount water filter (model FM-2000B, FM3333B), which is intended for home use to treat water from a single faucet.

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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).