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Supe yrs SafetyOperations StPau, MY 55144-1000 LEE27%2]0pt576 a IM oer Vaan Deters DDoocckuemtenAtR-C2o2nt6rol Office: E12P0A1 ECsosntstBiutiultdiionng,AveR.,ooN.mW6.428 WPhaosnhei:ng2t0o2n-,5D64C-829300460 Attention: OPPT Docket No. AR-226 (Toni Krasnic - Room 410L) Re: Information on perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) Dear Docket Officer: (diFaOlSog)u,`eTpwheiirstfhclouEnotPrioAnoucretesagna3orMid'cisnagcviopdleur(nfPtlFauOorAryo)sc,uhbeammniidcsasrleislo.antseoWdfecdoaamrtpeaoeuonnncdlpsoe,srifanlsguopaarroCtooDcftawonheuircshounlgfooinnagt.e contains PDF copiesofthe following: J.PerBfultueonrhooofcft,anS.esCuhlafnonga,tean(dPFDO.SE)hriensRmaatsn,, M"iCcoem,paarnadtMivoenkPehyasr.m"ac3okMinSettriactesgiocf Toxicology Laboratory, June 15, 2010. J.(PoHtaarstsainudm JP. eBruftleuonrhooofcft,anFcinsaullfRoenpaoter)t (iSnTR-a2t9s1.)": 3"MPKStrSattuedgyicofToMxTicDoIlDogy208 Laboratory, April 30, 2010. J.StBuudtyeoafhPoefrffalnudorSo.ocCthaanneg,SuFlifnoanlatReepionrRtaatsn.d" A3mMenSdtrmaeteagtisc (TSoTx-i1c7o9l)o:gy"LAaDbMorEatory. `April 29,2010. = J.MTHDarItDan2d08J. (BPuotteanshsoifufm, PFeirnfalluRoerpooorcttaannedSAumlfeonnadtme,enPtFO(SS)T-2in74M)i:ce".A"D3MMESSttruadteygiicf,; -171. Toxicology Laboratory, April 30, 2010. = ColNTAINS No ce + J. Butenhoffand S. Chang, Final Report and Amendments (ST-216): "ADME Study of Perfluorooctanesulfonate (PFOS) in Rats." 3M Strategic Toxicology Laboratory, April 29, 2010. J. Butenhoffand S. Chang, Final Report and Amendment (ST-210): "ADME Study ofPerfluorooctanesulfonate (PFOS) in Rats." 3M Strategic Toxicology Laboratory, April 29, 2010. 1. Butenhoffand S. Chang, Final Report and Amendment (ST-207): "Oral ADME Study of MTDID 208 in Rats." 3M Strategic Toxicology Laboratory, April 29, + Minnesota Departmentof Health Community Brief: "East Metro PFC Biomonitoring Study Follow-Up Analysisof PFC Levels in Blood and Past Levels of PFCs in Drinking Water." April, 2010. Please feel free to contact me with any questions. Very rly yous, y 4 e Gary A. Hohenstein ManagerofEnvironmental and SVE Conc, Buding 2265.03 Regulatory Affairs St. Paul, MN 55133 Phone: 651-737-3570 E-mail: gahohenstein@mmm.com Enclosures. ec: Dr. Jennifer Seed, EPA Dr. Joyce Donohue, EPA Dr. Dana Glass, Oakridge National Laboratory (al) with enclosures)