STATE OF MlNNESOTA l COUNTY OF HENNEPIN DISTRICT COURT FOURTH JUDICIAL DISTRICT Case Type: Other/Civil State of Minnesota, by its Attorney General.

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A Review of the Environmental Fate and Effects of Sulfonyl Based Fluorochemicals 3M Environmental Laboratory November 18, 1998 DRAFT 3M Praprictary Information Do Not Copy 1 11/1895 DRAFT 2712.0001 Attorney/Client Privileged Do Not Disclose: Exhibit Table of Contents EXECUTIVE SUMMARY 3 INTRODUCTION 4 PHYSICAL-CHEMICAL PROPERTIES 7 ANALYTICAL TEST METHODS 10 DEGRADATION 13 ECOTOX 7 ENVIRONMENTAL FATE 21 RESEARCH RATIONALE 2 REFERENCES 27 3M Praprictary Information Do Not Copy 11/1895 DRAFT 2712.0002 Atarncy/Cliat Privileged DoNot Disclose 3M_MNOS374965 Executive Summary Adding fluorine atoms to organic molecules produces fluorochemicals, compounds that are quite stabi, chemically inert and nonreactive.

Issue: DDooccuummeenntt TTyyppee:: CCataeteggoorryy:: Issue: CCoorrppoorraattee M Meessssaaggeess FEEnCnvvi-irrEooansntmmeMennetttaarlloEEDnnreeirrnggkyyianagnnddWaSStaafefeerttyy IIssssuueess FC -East Metro Drinking Water 102000, 3M announced it was phasing out ofproduction ofPFOS and PFOA ITs"nTthhoe2ep0pcc0eoo0dmm,pup3asaMinnnyygawwnaannaononttutheeneddcrettdloouiffotoorwccouucasshseoopmnnhiacmmsaoiolnr,rgeePossFuuuBsstttAoaa,ifinnpaaartbbolltdeesuttcCeetoccithohtnnnoaolgoloeofggPiGierFesosO.v.eS33.MaMnMdhhNaaPddFfaaOaclliArrleei.atayddyy dstuoepptoeddeucsrienagseadnoctuhsetrofmleurordoecmhaenmd,ical, PFBA, at its Cottage Grove, MN facility due to decreased customer demand

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m DODFEEPPHAAERRATTLMMTEEHNNTT OF HEALTH Health Risk Assessment UnHHie,eaalElitnhhvBiBaoasnsemeeddnGGtauulidHaienacdletfahfoorDrniWW vaictsaieteoernr Health Risk Assessment Unit, Environmental H6e5a1l.th20D1i.v4is8io9n0 651-201-4899 W Weebb PPuubblliiccaattiioonn DDaattee:: MMaayy 22001177 CTTAooSx:xiicc3o3o5ll-oo67gg-i1i(ccfaarelle SaSciuudm)mmmaarryy ffoorr:: PPeerrfflluuoorrooooccttaannooiicc AAcciidd CAS: 3333833325555.---66626676.--01-01(f((ara(eccaeiidmdamffcllouiudnoo)irriiuddmee))salt, APFO) 322333835929.5559.--23006-003---188(s(((iapplmoovtetmarasosssasnliiuituu)mmm sssaaallttl)t), APFO) 333No333t555e---:999535p---35e5r(((ussscoiolrvddoeiiourucmsmtaasslntaa)olltat))te anion doesnothave a specific CAS number] Synonym: PFOA [Note: perfluorooctanoate Synonym: PFOA anion does not have a specific CAS number.]

STATE OF MINNESOTA F ILED PSL ' DISTRICT COURT COUNTY OF HENNEPIN 20" FEB l l P" 3' 37FOURTH JUDICIAL DISTRICT " msmci'im ' `H'E'N'IN' co'.

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