Document kDXV9EwmymybwLpNGNGoMDv0B

Marshall J. Gravdahi Marshall J. Gravdahl J 05/07/2003 08:31 PM Subject Re: PFOA Producionl} To: Dana M. Schnobrich/US-Corporate/3M/US@3M-Corporate Subject: Re: PFOA Production~ TTrhahecerireeonaaarreetommnoor(ree0 pperromoccoeessvss sstrtteaepcpess miffeyyaooluu wcwoaannntttam0toinaaaddtddiommno)orraeendeddteahtiaeli.lr. WW5eeaoonnae-m-ppmlloatnteeiaddtisiotintlleerdeattchhteeioaanccisddtoaaptftebeerrfore the dryi45nwgs fractionation mostly 53d th ammanium sai (to remove trace metal contamination) and there is an ammoniation reaction step before the drying as we mostly sold the ammonium salt. AACelislsocthrhueedemmo(orsrseeFhIMt-ohou6ug4g4hh)t faaobbo8rauutoi1wt., Imrroeemnmiee,mmbbeReroreebddertrhWaatit DDleeckcaasltuwurraidsiddthssoomemneegiffrnraaeccettriiooinnnaatDtiieooncnoatofuftrthhaeendaacccidouofldunogrdiidveee mGcmevoolerlrrsechredeusedtdteaalai(l.ansd|I FM-4644) for a few months. Robert Williams was the engineer dtohnoty hnevkorDhoacadttuhratakavamiuabclhfonryC8raacctoansatornocofa1h C8 cid don't think Decatur did much if any fractionation of the C8 acid 851 requa iamrpeeres in Decatur and could give as it requires a tempered overhead and they never had that avaiable for C8 acid as I recall. RReeggaardrdss,, 0MM2aa2rr3ss.hh0aa6lll:5JJ..:0GG4rraavvddaahhtl ST0Se2lMU:2MM3(O-6D0561AA-)DSDM-M07I4I3NN3-7308 DTFFaaeanxlx::aM(((6.655511)1S))c777h333a366b-7-7r753i504c48h22 Dana M. Schnobrich [yea Dom Smt: nat A SansCaponMUQSS Con OBR og 5 Cli Dana M. Schnobrich COTROSOZSSPM `SubjecLot:l: PMDiFocMOhaaaArtn!sPhAraoD.dluu.ocSrtaGianoktrnoArUaoSlvU-SC-dCoararpphoorrileirJMUsSS@-MUC-CSoar@rpICopMorropaColorrreapatoertatee 05/07t2003 02:55 PM To: cc: Subject: Michael A. Santoro/US-Corporate/3M/US@3M-Corporate Dean D. Dworak/US-Corporate/3M/US@3M-Corporate Marshall J. Gravdahl/US-Corporate/3M/US@3M-Corporate PFOA Production MMiikkee,, talked briefly with Dean and Marshall regarding our manufacturing history for PFOA. My [ssTuuthammelmkmmeaaadrnryyubfriiiasecfiitnlnyutterewnendidoteehfddDPt1oFe0aObbnAeeaggnieendnnveMeorrlaaavllerssaahnnfaddolluwwrreeeggeccanaarendnriaggnleegttstommeupoosrr:rmee assnppeuecfciaiffciitccuriifinyygoouuhihhstaaovvreey aafddoddriitPtiiFooOnnaaAll .qquuMeessyttiioonnss. The manufacture of PFOA involves four general steps: 1 2 CCSetleailbslisltiezpation (aways done at same location asthe cell step) 2. 343. FFDSrrrtaaaycbcittiniilgoioznnaaattitoiiononn(always done at same location as the cell step) 4. Drying Ictohtnhitinnakiknsaallllsooofmftethhegeseseneeccroaoluulliddnhhfoaarvvmeeatiininvovnoollwvveheddeneennavvcitiirrovoinntmmieeesnntotaaollkeemmpilsisassciieooannss..the iTTtehh.ee ttWaabbelleecpparrnoogvveiitddeemddorbbeeellooww ascspponeedncctiaiIffiicinccasniiffssoyyemoonuued wwgtoheoiunusleltdrdoalilyikikoene.uf.ormMMyaaoarturissohhdneaasllwlirhiiessenggaaattchhteeirvriiintniggesttootoggeeottkhheeprrlasscooemmaeet thhhiiessttosoirrtyye.aarrWoouuenndcdaccneelglllepptrrmooddouurcecttiioonn and I can send this to you if you desire. Plant | CeliStep | Stabilization | Fractionation | Drying Plant Cottage Grove [bosEE nSabilisatinon share| Vex nGolfphmeathnt n Cottage Grove Cell Step First cell run in the 1950's Stabilization Stabilization always conductcd in Fractionation Yes Drying Only place that drying as cvcr bccn PraMoatddeecAAvvaaOailarbbdlleeerbbyiyn 33PMaiffoomrreIInrnsspp3ee4cc,ttiiooNnnoaannCdd2.CC0oo4pp.yy6ii3nn0gg05as CCoonnfifiddeenntitiaall IInnffoorrmmaatitioonn:: SSuubbjjeectcttoto Protective Order In Palmer v. 3M, No. C2-04-6309 EEx1xh8hi9ibb7iitt 1897 State of Minnesota v. 3M Co., Court File No. 27-CV-10-28862 SAO0044477 3MA00044477 11889977..00000011 DeDceacattuurr Antwerp Antwerp ecov linhe | caolbnjlvuoncstiioonnvihtahythse || Began cell r~ms in the late I 96(Fs or early 1970 During ts |cnpctiitohtnh | 1970's. During this rod here aso | ll ep. ~eriod lhere was not a oto PEON de. lot oI'PFOA made at tir. Deca Decatur. Decatur ped maki PFOA stopped nraking PFOA ve1550sand did m the 1980's and did tease tis aot reinitiate rids iy wi he ke: activity until the late fos 1990's. Pet prion | Saba ays| Began cell operations he 080s Not | sndtod m the 1980's. Not any rusprobably |sonoviththe many rims, probably 2persone [al sp 1-2 pcr year to mcct Purspen dont. Ihe European demand. conjunction wilb the cell step. Stabilization always conducted in conjunction with the cell step. Stabilization always conducted m coNunction with the ccll step reba Probably not. I )ecatnr stabilized mera win material was rota facie probably fractionated aCo Grove m Cottage Grove. VeYes anducd conducted. Newer Never Neer Never PMMaatdrie AAvvoaaOtilarabtdbleleerbbeiyyn33PMcamofoertrrIInnvs.spp3eecc,ttiioNonon.aannCdd2-CC0oo4pp-yy6ii3nn0gga0ass CCoonnfifiddeennttiiaall IInnffoorrmmaattiioonn:: SSuubbjjeectcttoto Protective Order In Palmer v. 3M, No. C2-04-6309 11889977..00000022 M3MA0A000004444447788