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DDiisscchhaarrggee ooff PPeerrfflluuoorrFooeccbaarrrbubaoornnyss (2(P6PF,F2CC0ss0))7ffrroolmn 33MM CCoottttaaggee GGrroovvee PPllaanntt February 26, 2007 33CoMMttddaiigssecchhGaarrroggveeess ttprrleeaaanttteedtdopptrrhooecceeMssisssswwiasassstitpeepwwiaatRteiervreara.nndd Tcchooeooslliienngdgiwwsacathtaeerrrgeeeffsffllauureecnntatssutffhrrooormimzttehhdeea33nMMd lCMliiNmomOtiitOttaeeDgddIeAuuG4nndSdroe.ervretthPhpreeloaNNcnePPtsDtDsoEEwtShSaes((tMNNaeatiwstiisaoointnsasaealiltrpPPpotoilhlRleluuiptvtlaaeannrnt.tt DiDsTidihssieccrshheeaacrrtdggeieesdcEEhtllaoiirmmtgihieennpsaaltaatiirnoeotnn'asuSSwtyyhassotsteretimmzee)w)dappteaeernrmmrdiitt M tatrrneeNaaat0ctmt0miee0vnn1att4te4ppdl8laa.snnlttPuwwdrohgheciieccsshhysscctwooenamns.ssitisesttTwssh,aetiiennirnggaceetinnentehrerarealal,pt,oolaorfnfcsthcchierseumdmbibicirecearacllbtelppdrroeetwcocdiitppohiiwtetaanpttiiliooannnttraa'esnnaddwteccadllsaavtrrieiiawffiiaccaaatstetieiroopnan,r,aaatnnedd acctrnhheeeaammtcieticdicvaaplalrteppodrcreeecscsilsiuppidwittagaasetttiioseoynwnsaststeyyemssrtt.eedmimTshcaahennaddringiiecss.inaallessTrooahteddopiirrrreesoccccttreeuedsdbsbttooewraaasbnntlddoewmmwoadontoniewitrtoondrrieeissddctwhrwiaetriathgtheieindnisvtthchiaaeelalSSeDDsdeO0pSO0aDI1rOaOteT (st(NrusePurarfDtfaeaEcdcSeedpiprdoesiscrccmehhisastarrwgtgheeaats00t00ew1w1e)).sa. treBBerieedsgnsiisunncenihdiannirgnggeFii.nenbJJTraauhnnaeuuraapyrrryyo2c022e000s300s,44w,,haeppsuut3rerssMwuuaaaCntneottrtt1doa0igsaaecrrhGeeaqqrruuogiievrreeeimsmpecleananntltlteiidnn theSD001 the NcccoaoPrmmDbppolElneeSttseeypddsetraamennmddiwt bbatehesggartaaennwquooapispererreeraaditstiistouoonneordofefimnaaonnFveeaabcc(rttAuiivPvaaarEyttSee)dd20acc0laak3rryb,bloothnnpehtter3rneeMoaalttmCmceetonnhttottaxssgyyyelssattGteeemmrs.o.vwehTTiphhcleeahnaacthctatiidvvaabtteeeeddn fcfaolaousrubonnoddtnhtteoosmybboseetsetccmaasuuuwssiiitannasggbrlaeaeccqtuuuetticeerehaadnqqoutuloaoatgtriiyeccmtatooopxxpviliecciiic(ttaAyybPliineEn sttfh)hoeeralrSSkeDDymOl0oOp0vI1haleddniPiossElcchCheasatrhrggioenex..ywalAAatctecetrtsiivvawaanthtdeeicddwhaccsahatrarebdbwooabnnteeiiessrn aA`aAclfsftttoieevrrtahJtJeaeadnnmuucaoaarrsryytbso22un00i00tsa44ybslaaetlllletmeppcrrphoorccnieeoossrlssotgowwyadasiaststpceephwwalairactgtaeeeb.rrlewwaafsosrddriierrmeeccotteveddalffPoorrFtCtrreseaaitntmmweennatttetthrhrraonouudggwhh atthshteeewater. activated carbon system prior to discharge. CwCaootooellriinnsggouwwraactteeesrraiirsseuufssreeoddmaatthttehheeWppolloaadnnbtuiinrn ynnoocnnoccnootnnattmaaiccnttacctooiooolnliinsniggtewwapatuteemrrpossyyussttteewmmess.l.sTTahnheed cctoohoeolli3inngMg. wCCthooaettttte3aargMgseeoCGGuorrtrcotoeavvsgeeeapprGellaarfnnorttovmiesittpeetlhwwaeeneltWlllsfs.or.oodTmTbhhtueehreyW WWocoooooodnddbtbabumuurrriyynyaggtrrsiioooteuun.nnsddiTwwtehaaetpteeuWrrmoppopuudommbuptpuoorwuuytetlplwwsuaamattnpeedroruiitsshteppii3ppMeedd ttoo tgrdhiroeosucu3nhnMdadrwwgaCetaoteSteDrtra0g0nn2eoo.tt.GuurssoeAevlddleffcpooorlraocclnooitonoflglriionwnmggataatethtreitthhsWeedpiopllocaadnntbtteuiidsrsytddoisissiatccehh.paaorrTngghdeeeddfW ovvriaoachottlhdhoeberuippnrllyaaatnnpitto'u'ssnm/ccdpooeoocoulhlitilnongrgiwwnaaatttieeorrn NdaNcioostcioovhateahtrreegdrettcrSraeeDraabt0tmo0mne2enn.ttrtoeAoaftlflmcceoconootolo.liliinnnggTghwwewaatacteteoreorrliiisissnppgdrrioowrvvaeiticddeteeerddd,d,tioaasnncaddhpaccrooognooedlliiifnsncoggarlwwclahaetltdeoerrrSinddDaoo0teei0sso2nnn!o(odlsteurrcreehfccaleeociiervvineeation. adpdlicisasticncvthhaaawtrrehggdieecc00ha00r2e2b)n.)ol.narBBtgrooeetsathhtmiSSneDDtnO0aotO.0I1cToaahvnneeddaconSSdoDDlOi0hn00eg2n2cwddeiaisdstciechsrhcaadhrrigagsreecghtteoaosrgaateossmmtisahaleclllaMlccilrreseesdeeikksSsDaaiddp0jpj0aai2ccRee(innsvttuerrtt.ofoatcthehee 33MM plant which enlarges into a cove and hence discharges to the Mississippi River. PEC Discharge Data Prior to 8 Carbon PEC Phase Out Completion PFC Discharge Data Prior to 8 Carbon PFC Phase Out Completion LLRiiimvmeiirtteefddrddoaamtttsahewwaa3ssMaavvCaaoiitllatabballgeeeooGnnrotthvheee ccpoolnnacncetennpttrrriaaottriiootnnosstoeofmfiPPnFFaCCtsisdoidnsisoccfhphararorggdeeuddctttiooottnhhoeefM Mtishissesiissssicippaprpibion RPPacFiEtvCieCvsra(t(fPerPodFFmOcOaSStrhbaaeonnn3ddMsPPysFFCtOOeomAtA.tarrgeeIellnaaGttFeeredodbvrPPeuFFapCCrlyaccn2oot0mmp0pp2roi,oouurinnntddocotppenrrrnoomeddcuiutcnctiatioitooinonwn)ni),,toaahfnndpddrraoppfdrtriiuiooncrrgtittoootnhttehhoeerfetuuihssseeesou8ofefdcttahhreebon NamNcoPPtniDDivtEaEotSSerdippnecegrarmmdribatito,ta,nMM3syPMPsCCtheAAamd.wwfaaIotntreerPFr FeqqbCuuarsaulliaaittrnyyyalss2ytt0aazf0feff2drr,eieiqnqnuutceehsosettne3enddMettchhtdaiaiottsnc33hwMaMrigtssheuu.bbdmmr(aiiAfttttiaanltlgllhaaatthvvateaiiilrlmaeaebiblstleseh:ueedMPCA mhdhiaaosddnchnnitaooorrgddieanatgtdaaadtffaooatrraitPP3hFFMaCdCshfddaoidirsscfPcohhFraaCrrPsggFeeaCddnsaffrlraoynomzmaeldytthhzieeend33tMhiMne tppShllaDeanOtn.3D)t.MI) IddIninissFFcceehhbbaarrrruguuaeear.ryfyo(r22A00st00at22mh,,palt33eMtMsimcsseouulbtblhmmeeicittMttetedePddiCnA sdSSteiaesplpcltthdeeaimmrsbgbceeoervrd--eaOOrtceactdtoiotbbtheheaarrtd22of00to00h1re1.rP. FPFFCFoosuCurardnyyiaeeslaaycrrhzssaerdllagatteieenrdrtaihitnneaMMeSaxDayiy,0s,t0e221d000d0f66io,sr,cshhhaooamwrwgpeeelvveefesror,,rtaMsMkaPemPnCCpaAlAtesSwwcDaatoOtelOelrerIcqqtbuueaydalli3iittnyyM istinnhtaeJJfaafMnndPuuiasaCrcrAyyovtteihhnrrreo2od0uu0ggt2hhh,aMtMaaoartrhrcceehhqru22Pe00Fs00t1C1.ed.dia33stcMMthhaahhrtaagddteimnndeooa.tttassPuueubbxrmmissiuttietattdneetddftotthrohiistssahimJJsaapndlinuesasucroatyva-rekMreyyna,-raMcMthaPS2r2D0C0c000Ah1011ddabatytaa3ttoMo trrheeeqquuMeessPtteCeddAtthhinaatt2330MM02s,suuabbsmmrieittqutthheeestaaedddddiaitttioothnnaaaltl tooimmmietittteePdduPPrsFFuCCanddtiitssocchhthaarirsggeediddsaacttoaavfefoorryr,DSMDO0PO0C]1A. ExhiDIt 2133 22113333..00000011 STATE 01995465 STATE_01995465 ScSuoubnbsdseueqcqutueeendnttdllyyuriiinnnMMtaahyye 2J20a00n06u6,a,r33yM-MMassruucbbmhmi2tit0ttee0dd1 ddsaaattmaapfflooirrngPPEFpCCerssioiidnn. tthh(eeTDhSeDO0oO0m!i1sdsdiiissoccnohhaafrrggdeeischarge cddinaoaitnttaadalbubyycette33deMMridiswusraivasnivgosieltohnalteattitiJoooannn3ouoMfafrsrysaet-atgMtaeeradaraicnnnhddg2ffte0ehdd0iese1rriaaslslasmuruuelpleeilsnsinJppgueelrprytte,aariii2non0iidn0n.gg6{(t0aTonhtdtehhteeohmNeNPPiMsDDsPiEEoCSSnAopprefroovdgagirlrsauacmamh.ta.irognAAenn ofthis issue is pending ) initial letter was sent to 3M of this issue is pending.) regarding this issue in July, 2006 and the MPCA evaluation T"inThhteeheffooSlllDlooOwwOii]nnggdttiaasbbcllheeassrgssehhoofwworssttthheheprreaarnniggoeedaaJnnaddnuaaavvreeyrr-aaMggaeeorocfhfcco2on0nc0ce1enntartnradattiiSooennpssteffomorrbeiinrnd-diOivvciitddouubaaellrPPF2FC0Cs0.s1, iiPinnn CtpphaaerrpttrSssoDppde0eurcr0t1bbiiiolldllniiisoopcnnrho((acuuregggs/se)1..)f.orTTThthhheeeseseseepteassrbaailommedpsplJleetashsneuwwraeeerfrryoeer-Mettaarkakereepcnnrhedds2uue0rnr0iitn1nmggaattsnhhsdee Splpohheapadsstieeenmogosbuuetorfoo-fOfPttcFhhtCeoesb8ecrcaa2rr0bb0oo1nn, PdadciiFstsCcicvhhapaatrrreoggdededudcacffrtriiboooomnmn psSSryDDosOc0teO0esT1ms.bbbeeeTfgfhoaoernreseotthptheaeerbapplterrisoooddntu.hucectrtiPeioorfonnodrppeuhhcraatessipeeorneoosuupethtnawwtsameassaocscusootmmloopfplaledheteitneegddcsaaaonrnfddbPobbFeneCffooPsrrFeeCttshheewas accbcoaotsmmiepvpdlaleteoettndeedd2cabb4ryybcoatthnhreebsoeeynnnsddtPeoFmofCf,b220e0p0g0e2ar2,nf, laaounnpoddreorssabiitunnitocczneen.etthhPseeurnnolfPdPouFFncCCattieopprnroopdduhucactstiieooounuaatto33fMMtheCCcoaattrgabgeoenGG8rroPovvFeeCsiiss was based on a 4 carbon PFC, perfluorobutane sulfbnate. PECs in SDOOI Discharge in Jan-March 2001, During Phase-out of8 Carbon PFCs PFCs in SD001 Discharge in Jan-March 2001, During Phase-out of 8 Carbon PFCs Jan-Mar2001 datafor weekssamping)| Range ppb__| Averappgb e| 'PPFEJOCaSSn-pMpeearrfrflui2uo0or0ro1ooocddttaaatnnaee(sfsouurllff8oonnwaaetteeeks sampling) PPFFOOAApeprefrfuluoorrooooccttaannooiccaaccidd 'PPFFBBAA ppeerr~flluuoorroobbuuttaannooiicc aaccidd R3322a1n1g--e3399p77p00b |aAveo r1a4g0e4 d ppb| 11332200-- 44223300 1991 119977--88117700 |2121996 6| PFS perfuorobutane sulfonate eee Tw PFBS perfluorobutane sulfonate 6 - 3250 766 PEPeA peruoropenianocsd 0-678 PFPeA perfluoropentanoic acid <50 - 676 225 PEFoAperuorchoxanoacido EE | PPPEFFHHHpAxpAA pppeeerrrffflluluuooorrrooohhneeexppattaannnoooiiciccaaacccididd 322211--6362550 | 3 13234 | FHS perfucrohexane sulonsie Lr PFHxS perfluorohexane sulfonate 10 - 31 18 Perfuoroheptane sufonate <t0-10 PPPeeefrrifflluuuooorrrooohppeeenpntttaaannnees sssuuulllfffooonnnaaattteee PPFENNAAppeerfrflluuoorroonnaannooiicc aacciidd PPFFDDAAppeerrfflluuoorrooddeeccaanncoiiccaacciidd <1 <10 - 10 <10 NNooddaata NNooddaattaa -- |] |] PFUA perfucroundecancic acd ewe PFUnA perfluoroundecanoic acid No data PFOA perfuorododecanci ocd Nodata PFDoA perfluorododecanoic acid No data PETA pertuoroindecansic acid. Noda | | PFTA perfluorotridecanoic acid No data Portuoropropanesufonate wo] PPPFFerOOflSSuoAAropppeerrrofflpuiaoonrroeooosccuttalafnoneneasstuuellffoonnaammiiddee <<<111000 1 PFOSAA wt PFOSAA 24 - 131 72 ErFOSETON "10-14 MEMeteFFFOOOSSSEEE--E-OOTHOHH DDiieesstteerr ooff FFCC--880077 <0 <10 - 14 <10 <<1100 -- 1] `Cumiative average FFG compounds (6p5) 2 Cumulative average PFC compounds (ppb) 6828 22113333..00000022 STATE_01995466 STATE_01995466 PP`EFSCCessptiinenmSSbDDeO0r00-11OcDDiiio2ss0cbc0heh1aarrrggfee ii3nonsaSSmerepppltte--sOO)cctt 2001, 2001, DDuRurarininngggooPPphhbaassee--oo|uutAtvooefrfa8gCeCpaaorrbbboonn PFCs PFCs PSPEeFpOGtSSemppbeeerrfrfl-uuOoocrrotoooobccettarann2ee00ss1uullff(oofnonarat3tee.samples) [siRaz 1n5g1ee-p3p8bd4 ] Averag22e6622ppb PPFFOOAA ppeerrffluuoorrooooccttaannooiicc aacciidd 187 - 267 221166 ''PPPFFFBBBAAS pppeeerrr~folluruooorrbooubbtuuttaaannnecoiiccsuaafccoiidnd"a*te ["8e45as- --64e3a0*s| o ot334a6622* PFPA perfluoropentanoi ack PFB$ perfluorobutane sulfonate PFPeA perfluoropentanoic acid <i00 24 - i 38 <. 100 64 PPFEHxFA ppeorrflulouroorhoexhaenxoaicnaoacicidcd [a26e - 32 ] 229 P'PPFFEHHpRApSA pppeeerrrfffllluuuooorrrooohhheeeppxttaaannneooisiccufaaoccnidda.te 12 - 19 1i155 PENA porfuoronanic acid PFHxS perfluorohexane sulfonate PFNA perfluoronanoic acid no11 no cata- 12 data 11 PPFFDDAA ppeerfuluoorrooddeceacnaonicacaciciicdd |nno o datac| PPFFUUnAA ppeerrffluluocrorouunnddeeccaannooiicc aaccidd | nonocdataa s| PPPEFFTDDAooAApeppreefrrlffuluoloruaroolridododedocdeaecncaoainncoiiaccciaadc.ciidd |nonocdaa ta a| PPPPoeFedlurTfoulAruooorhpreoeopptrhefaelnunpeottraaonnsteeruidlssefuuclloffaononnnaoaatticteee.acid <t0-1z no data <10 - 12 PPPPoFeerrrOffullSuuoooArrrooopppperreroonfpputaaaonnnreeoeossscuuutlllafffoononnenaaastttueeelfonamide <i0<10 <10 ProSMA PFOSA perfluorooctane sulfonamide P`FCuOmSulAaAtive Average PFC Compounds (p90) 3-39 <10 38 - 39 030398 *2*0C0PPu2Im~BBduAalAattaiiivnnseuttAhbhmeevieSStraetepgeptedt--OtPOocFcttCth22eC00oM00m1P1pCddoAaau;ttnaadtwwshaae(spspviibann)liiuttieiaaslllliyynirrteeipaploolrrytteseddubiimnnicctooirrerreedccwttlleyyreiin4n0att9hhr8eeanFFgeeebborrfuua8ar4ryy.,,5 to 266of404t303.h2.00edppoapmptbiba,t, staauevvbdeemrJraaiatggnteee-odMofatfor33ct44hh66e2.22M00ppP1ppbCb.P.AF;TTChthhidiessisvddcaaahtltauaaregwwseaaisdnsaitcctaioo.arrlrrlyeecctsteueddbmbbyyitt33eMdM wiinner22e000a066rawwnigittehh ossfuubb8mm4i.t5itttataoll of the omitted Jan-March 2001 PFC discharge data. BBapaapssreeoddxioomnnattthheeelyJJaa7nn3uu,aa0rr0yy0tthphorronoudugsghhofMMaParFrCccshh w22e0000r11e PPdiFFsCCchddaiirssgccehhdaarraggneenuddaaalttlaay,, iitttoiistsheeessttMiiimmsaastitesedsdittphhpaaitt River fafirnprooptmmhroettxhchioeemoSSlaiDtDenO0lgy00w117a3tdd,eii0srs0ccd0hhiaapsrrcogghneeadrffsrgroeoommfSPDtth0Fh0eeC23s3.MMweCCroeottdttaaisggceehGaGrrrogoevvdeeappnllanannut.ta.lly33MtMo ddthiidde nMnootitsasainnsaaslliypyzzpeei RPPFFiCvCse.sr in the cooling water discharge SD002. CCuurrrreenntt DDiisscchhaarrggee ooff PPFECCss ffrroomm 33MM CCoottttaaggee GGrroovvee PPllaanntt aatt SSDD00O0L1 PPPuuErrCssuucaaonntmtpttooourrneeqdquusiirrienemmiteesnntStoDofOftOthhIeedNNisPPcDDhaEErSSgeppoeernrmmaiittmo33nMVthiilssyrreebqqasuuiiisrr.eedd Tttohoimmsomononinititootrrortfbiorrng5biienngddaiivvniiddiuunaall PFbFeeFegbbCirrnuucnaaoirrmynygp22oi00nu00n3F3deaabsffrtituenearirtrryseeii2Ssss0Dsu0u0a3a0nn1iccseeadlooissffcotthahhafeeregNNrePPotDDhnEeEaSSScmappoerernrbmmtiohtinl.ty. PbTTEahhCseiesp.mmroooTndnhuttcihhstlliymyonommonwoniatniositrtooitnrreigirnnmbggiengaatnedin b(("eTeenhngeddinf0ono7filn22lg0o00w0ii2n2n))gFaaetnnbaddbrlutteahhreseyuaam2ccm0ttia0ivvr3aaittizeesdedasclcstaaohrrbebaoofmntnoenrsstyythhsslteteyem8mPcbbFaeerCccbaaommnmoneePiFtoopoCpererirpanartgtoiiooddnnuaaatcllati(o(fiionnnrwJJdaaiannssuuctaaherraryyrmg22ein000fa04rt4e)od)m TSdSiDDhs0e0cOh0f1ao1rllgffooeowrraittfnhhegeertyytaeehbaaelrressacs22tu00imv00a55mteaaadnnriddczae22rs00b0t0o6h6n,e, smaaynnsoddtnettmthh.hleeyrreBePffaoFosrrCeeedmrreeooppnrnreetitsshoeeernni2ttnss0g0PP5dFF-aCC2tas0s0fiio6nnrtSthdhDeiesOcSSOhDDIa00rd0g0i1e1scfrhoamrge ddddaiiaststcaachhMMaarrPPggeCCedAAafsfttsreatorafmtffhfSeeeDssatOtciiOmtmIiava,tateetwseshdttihhccaahattribasapopapnprrsosouyxxbsiistmmteaamanttte.eillayByl ar11se00ed77du00cotppnioootuunhnneiddns2s0tpph0eee5rr-myy2aee0saa0srr6oolfSofaDPPd0FFo0CCf1ssaPdraFirCesecsharge dddpiriisssoccdchhuhaacarrtrggigeeoeddnd fffprrhrooaommsmeSSSoDDDutO.00O00I11(,Nccowootmhem,ippcahharoreeiwsddevatteoosru,ttbhhasattthtaafnftootituuahnnlsddreedddsuuturriciimntniaggotn2e200ii00ns11bthaddesuuermrdiinanogsgnsttohlhoneeald8y ccoaafPrrPbbFFooCnnCsPPFFCC compounds currently production phase out. compounds currently analyzed.) (Note, however, analyzed.) that this estimate is based on only 5 PFC 22113333..00000033 STATE 01995467 STATE_01995467 oonameatvavescsr | 1s | 81 |w|s 1 | 24 SSuum m2mm 20a00a0r5r5yy2-o2c0o0fh00fa0622Sn0$00D05000--101220050066 SDO0I PHC Discharge SD001 PFC Discharge pros | pron Concentrations Concentrations | pres | or PECs for 5 PFCs prs | pra Discharge PFOS PFOA PFBS PHHxS PFHA 2005 angeorvaugeps| 52 ar | me | 10 | 12 2005 range of values, ppb 5.2 43.1 87.6 1.9 7.2 2005average, goo 04-165 | 9.2620| 73-2890 | 04-30 [04-211 2005 average, ppb 0.4 - 16.5 .9 - 262.0 7.3 - 283.0 0.4 - 3.0 0.4 - 21.1 2006 range of values, ppb 2000 mersge, opt 2006 average, ppb ara-tes | 0s-an1 | oa-sre 1.9 0.13 - 16.5 5.1 0.5 - 49.1 40.6 0.4 - 91.4 |0s.20| 01uss 1.1 0.5 - 2.6 2.4 0.1 - 5.5 3H3oMMweivserrreeq,quutiihrreede"ttoPo mCmooAnniittIoonrrveoosnntlliyygattthiheonaabbofoovvPeeF5CPPCFFoCCnstsappmuuirrnssauutaainnottntooitnthhNeeimNNnPPesDDoEEtSSa Pppheearrmsiei.t.| Study" H(m(DoOonrrw.itEeFovaarrereddr,diinntohOOtehlie"iraMaePiPERRCCeeAsppoonIrnrtttvhtteooestSSiSgeeOannUtaai)totee!nEEdonnifvsvPciihrFraooCrnngmemC.eeonnTntthtaCCfmoooimlmnmlamiotiitwottneieeneiongofMfrFFeienebbndrareuutsaaaorrtfyyaorP2200sh0a0a6ms6)ep)lIeSstudy" mllocnittoerdedin haother PinFvCesstiingatthieonSaDt0t0h1e 3diMscChaortgaeg. eTGhreovfoellpolwanitnganarJe deata27,for20s0am5 ples collected in that investigation at the 3M Cottage Grove plant on June 27, 2005: MPCA Phase 1 PFC Investigation, June, 2005, SDODI PFC Discharge MPCA Phase I PFC hlvestigation, June, 2005, SD001 PFC Discharge Concentrations Concentrations rrcunpmn| we |anGret| cGlAiCn | cSoonwe PFCs in ppb Pea Tiwn e si we PFBA pra or as on 55 PFPeA WWTP I GAC I GAC ] SD001 influcnt ' influcnt ' cfflucnt ] cffiucnt 178 ] 100 58.10 80.60 1,92 ' 2,35 ' 3.13 ! 9.96 pA TmTala ar PFHxA 1,72 ~ 2,10 3.76 , 9.27 ips i 35 PFHpA Pron 16 aw PFOA PENA EFS CTR CY ST PFNA <1.24 ] <1.24 1.09 I 2.35 3.740 I 7.76 . 1.67 ] 62.40 <1.33 I <1.33 <0.88 ' <0.88 on BE Snow | aw PFDA Pens BE} Gn | aw | aw PFUnA <1.28 ~ <1,28 . <0.85 ] <0.85 <1.27 <I.2"7 <0.85 ! <0.84 Poon ta | ia | os | ose PFDoA Pres [wi ww a PFBS Pris ico i PFHxS <1.26 ] <I .26 I <0.84 ] <0.840 3.30 ! 26.1 . 169.00 ' 10.40 11.00 . 10.00 1.16 I 3.48 Pros Si i I PFOS 3.17 24.8 1.33 19,20 Prosi on on PFOSA oat pres | aos |isi| awa | mi Total PFCs <1.24 I <.12,{ I <0.83 I <0.82 ~ 202.85 173.11 239.24 291.26 GGwaAAstCCoiwisaigrerarannruuellsaatrmaaeccntttiivvalattaeenddtcc{aaorrrbbopornno((casecsttsvivawatatseetddecwcaaartrbbeoornn)S)DaaOnnOdd1W W, WeWxTcTlPPudiiissnttghhethiiennffillnuuceeinnnttertaottothrhee wSnaisstebweratwearsttreewaatmteern.t plant [br process wastewater SDO01, excluding the incinerator scrubber wastewater. 22113333..00000044 STATE 01995468 STATE_01995468 Discharge of PFCs from 3M Cottage Grove Plant at SD002 (Coolin~ Water) 3M does not monitor the cooling water discharge SD002 for PFCs. The only data known available for PFC concentrations in the SD002 cooling water discharge is from the "MPCA Investigation of PFC Contamination in Minnesota Phase I Study" (Dr. Fardin Oliaei Report to Senate Environment Committee of February 2006) which found the following PFC concentrations at SD002, for samples collected at the 3M Cottage Grove Tr 7 plant on June 27, 2005: PFCs in ppb PFBA PFPeA PFHxA PFOA PFHpA PFOA 4i01 PFNA ~005 oy PPFFDUDAA PFUnA PFDoA ~0i05 ms] ............ <0:05 <005 PFB S Prosi PROS PFHxS PFOS ToPtFaOlSAPRC Total PFCs | 1:6~ sede] Future PFC Monitoring at SD001 and SD002 On February 9, 2007, MPCA staff sent a letter to 3M which requires that 3M immediately begin monitoring 14 PFC compounds at both the SD001 and SD002 discharges on a monthly basis, to begin in February 2007. The expanded analysis will include PFBA, as well as 8 other PFC compounds in addition to the 5 currently analyzed. The MPCA believes that more complete analytical data is needed to be able to assess the impacts of the 3M PFC discharge, including discharge of PFCs from the SD002 cooling water discharge. The MPCA is also currently in the process of developing discharge criteria for PFOS and PFOA, expected to be completed within the next few months. Don Kriens P.E. Principal Engineer Industrial Division Minnesota Pollution Control Agency 22113333..00000055 STATE_01995469