Document 0JQaMoXj33rqj39z8YJO3qLpM

FsTer~onIo'0t1m:1:1: Sclu'oobj: ect: Subject: KWDWKoeireuidnegdnsnlne,saes,ssdD.DdaooaDynany,v,iMdM:aarrRccyhhs.0066.M,a22r00k0022 1100.:2211 PPMM HSDHaWaoyLyueeg5ssl,Fa,sOMM,SaaDrrayayn:v;didMMor;oerRrlggaayatnsen,,d,McSSatoteremkppphhoaanunineied;;sSinisltsd,,isAAcirhnaasrrgs;e; WWhihtitee,, DDaannnn;; KKiimmbbaal,ll, GGaarryy 3M-PFOS and related compounds in discharge Markiave: Mark/Dave: T1"Thh0aannMkkss CffooortrtifnaofgorermmGiIinnEggvemmepelarrneetggaaarrndddiinnhggetthhpeeenrredeccieennngttiidnsviseccsootvvgeearrtyyooo.ff APPFFsOO|SSGs((ppceeurrsfllsuuooodrro|ooocecticaaonnneetssyuulrlfoonnctaeetvee))dninatnthheeupwwdeaellllesid/rgNrooPuunDndEdvwStapetererraattt taaahpppeppplil3iicccMaaatttiCiioooonnntt(w(adagGaseeteSGddurFboFmoveiebbtp55e,,lda22n0b0t0e0a2c2n)a)duwwsthhheeiccwhhpeetlinassrdtseinPPIgFFihOnOevSSespaatrnnigoddcaertriesofslanat.oteefdAdasfflfloIouidurtinosocccutooshmsmeepppdolouauInnnrtdedscssreiiennnitlhstyhsoeuree33dcMeMNivPddeiiDdssccEahhSanarrgpugeepe.rd. iaTT.tehhdiissNppPeerDrmmEiiStt permit application was submitted because we are in the process of drafting the plant's reissued NPDES permit. dI1 ikksnncoohwwaryygooeuu2hh0aa1vv0ee0ttwhhheeicddahattsaa Ithrreeeccpeerivioevcdeesbbsutdti1Islcisshtarittghheeerartetffhoorrttphhaentao.thhTerrriststfdatfa.f.taTThhseeaPPftFFeOOrSSeaaatnnmddornreetllaaattteedtdhcceoo3mmMppwooauusnntddesswawwteeerrrea fefooauutnnmddeiirnnt dp`plAilasaoncntrh.t.adriTTgshheceeu2s220s00i111n0g00000twseehffiffcdluuhaeetnnaisttwtddhiiiesshccph3hraaohrrcggeneesssssiddairfriseetccelhtmlayyargot0one aa|arItraaothvvaieimnneeepdlaaatdndhjtja.aatccTeenhntits0tsodaatmththpaeeliesppdllaaanfanttnedaranntraddenaatthtlhmeyenzneendidtiertaechtceltthlyydeittso3ocMththahewrogaMMesiits2ses0swii1ssa0sst0ieipprpfiotirreRRitaivhvteemersr.e.ent cAddTcoooaaftmtmtaetaplrpoa33foduMMiusn3ncdhhdussaassasssmddipccnuuolorgrmeiimnpnsthgpgiwiilsltieeehdrddisseafftpopoatrraaawskPPsteiFFtnShSbOOee3ySSppMtaae3irnHtmeh.ddibmsrreFbeearolle-falaOtertotecern-dndtioconccbotgooenommra2rpvI2p0elo0eoe00uuah1r1nnr.en.ddessr|Idhheiintnaahsvvttaheeuhtes3aancdMsssikksgceecshldhdaaamr33rgpgMMeele,,ffdooaarranniinddnndffowwoarhhmmnaaaaattltiyiiishooznnetahedaessthssfteoooouudwtwrcichsheeecehtoothafhferttrghrheteethh2ccer0ooree1mmp0iipos0souaafunonnndryydsts.hao.ethhAAseerr total of 3 samples were taken by 3M. Following are the results in ug/l: CPCoeormmfplpouocurunonoddctenic acd (PFOA) 2MM7aax.ccoonnc 21AAvv6eeccoonnsc.. ##wonoff detectsamples detect/samples PPPPeeeerrrrfffflllluuuuooccrrrroooooonoccecttpiaatannaneinecossiauuccllifadoocnn(deaPltFeeO((APF)FOOSS)) i233s688744 2i2216 262 wnn3/3 3/3 PPPPeeeerrrrfffflluuuucoocrrrroooonhhmeeeuspxyaatianncnooioaicciccaakaccciididd o3a1229a s221a94s 3/3 wwnn3/3 PPPPPPeeeeeerrrrrrffffftllluuuuuuccooocrrrrrroooooohhnbnneeeueuppxtsaytataarnanninceneeeeassscussuiiluudlfflolofofnonorannattaateeettee 643 212 123812 346 NANA 6it11 3/3 un3/1 n3/3 Perfluorobutane sulfonate 138 64 3/3 nCCoootnnsasipiddpeeerraiinrngg0tthhberessaeekeemmdioinnwggnllyyorhhiimggehhtalleebvvoeelllisszoeofdf PPnFOOaSS,n, tthahee eeIxnxcttrlrauaodoirrdniginnhaaruryymabbniiosoa,acchccueummauullayateitvteeunnnaktauorwetonofuftoPPxrFFiOOcSelSa,,gtithhcaelffaeacnctdtptrhoiaanttist,odoasenssd thcnhooeetmuapunpnokkpunnenooadwwrsnntopubbburutrsteuiiaannkncctrrdeeofaawsshniinnegog riNemvdPiedeDtenaEnbcScoeelopizeoferfdiaa.tinlleIealaanwstitomummalaaldsrmnainmmlcaoalullidbaaiennngptoohxrxuicumyityadnI| se0eb, lentvohlioeteekveawastweyeeevtnneeueneentddknt0moowarrneeiqqtnuouisxirrie,ecommloboogunricitataolrrineingnotdohpfefotihchnaeetssss,eeeaonfd oicomotthtmhearprtoippouaarnsssdt sdbbeiopovauaecrlcsoccupuuammmnelntutaltao.itivtvhaee organic, hs i NPDES permit. organics, this is perhaps It would perhaps a ways also be a ways off. However, | prudent to look off. However, I understand Dann W. at effluent limitations, understand Dann W. may be invesigating but as in the case of may be investigating limitations development. OcOannroebotthniinnaggs wwatoeoaatrraeorttyryyieinnaggttmoeaarccthhiipeervvoeceesaatst.I3MMAcCCtooitvttaaatggeeed GGcarrroobvvoeenppmuurrssuubaaaonnttnt0ooydithesis pp0earmrleitmsroevsiseusuaaahnnrcceoiirssg0atonirrceesqquuniiorreewggfrroaaunnluuallatarordaaccbityivvaatteedd ffTceeuaddoreebrrooraacnllargagbusuoiinddalseti.leinnretesias.r.y Given the treatment Given the relatively process. relatively age molec i ikely activated Activated carbon may be needed large molecule it is likely activated carbon would easily temove PFOS and to remove other organics now regulated carbon would easily remove PFOS and rated by related fluorocarbons. ATAhsalInkleesa.arnDommnoorree fomfrom 33MM I vilwill lleett yyoouu kknnooww,. Thanks, Don . 11883311..00000011 Exhibit 1831 STATE02795011 STATE_02795011