Document daNB2D40Jo8VmQxd9Lkq84830

iim EPweuyr an ALIS Pres In AIL-Bosty375 } 3 OL AUS [2 mig: 5 = August9, 2004 VIA E-MAIL = i or Se Derr DocumentControl Office(DCO) IA EI M a 1 EVU1o2S0i1EBgnCvaoiornorRnsomCioengm3tn0a6l6A4Pv70r8eotneec,tion Agency ` A wo At-rio:DockeNo.AR226wdthe FY Dicks ORHEHF THRe RRen Y Subject: ScNoendhSu15b,m3i0s0i3onofAeRnOiniegsDLtOs\Pcrcothatcs 3(0L65OIded Dear iorMadam: TBhUEesieusarsdupLeOeATtsLcatsyeudbwMomeietnkhesndop1w4a,pr2sor0at0naotrToshoososreporLbtees eSorNeoeefPonFenOnnRtw(bLagpO motii pMsio to co h 3co ,w2Se dt0saenAAdTP0FF miionn igof oFFpOA, ing heDec rs poof nr05 CoCAtsmaoeostntiGmrnlovnaemn3sdiMoscerLpooOtaLnnm0isnciooGtmtrtbueisofhn3edMtsss.oionTsthespnmpeolprsnrswghtow ftooPsFiObsALt ObsoLt,msonnitUn orninsg oe f wastey en wattetr ta SScNaonrrptoarootpdueocoivsroinhmnepeaatesooernonn]ofPipaOAunRee,scnsocfrcioccpsnbiagseodieeeemdnps pd eotoe0fs 0ys8Teeocepnremee res AELEEOt ofMhe crFoimmviibmeencrs iunshrurheeiAP,E1UsGHLCOL BesatteehlecDnynngowsoosoo s sm p PmTgS PPoiheeesedmersiryeipoaifovrnBneEhbAoofs,cstieaetsndoemmoDiiourctkiaSuohbropgbiArcRsak.igu3oon3nu8dneoDdrfitihomeuLasntOiidnocsnga aDbnReossOf+AbdueneB dhstecMute ga2ys7, 20e05 eceoroWet nChota,eenngelnm1d rope ot le oor BE 180 ON NIVIN~~ 278 N72. a / Page2 DOUfoSfcceuEonmfvePinortolnlCmouentntitraoolnl OPPrfrofetivececentt(iioDonCnAOag)nednTcoyrics (OPPT) DItecsahotuulrdopaelrsaotbioensn.otDedyntehaotnusnduebrmithteAedPtFisOinUfsoerrmsatLiOoIn,tDoyEnPeAonincoJnadnuucatreyd2a0e04dispersion modeling for ts COTTAGE GROVE, MN SITE MONITORING DATA `Monitoring Results GroundwaterMonitoring raAenspnrueeaxslpclPaatFianOievAdeimonrfhtnhieetoprfrioenlvlgiooowunisnsggusobimitinetgca-olfnsod,ritw3iaMorndssbe(alSseiecsct.etdTaihcvehefeigdvreosmutonnmdiatwpaotr:eirnsgapmopilnitnsgwlroecactihoonssefnora5semi MMPzWW--174 Water supplMyWd-is1tr0i1bution system 72. sor stent WesteUmpiCgedrnoatwdrinaeglnrttaoodfsisieittnieonfdiunssditurtsitairlinadalucstaticrvtiiiatvliietasicetsivities SEiates-twiedme/gdroouwnndgwrataedroiffesoinmt tihnedupsrtoridaulctaictoinviwteilelss tSchaaepmsapecliwiteyniglpsuomfatpnhidentgwhaewrteeelfrlossruebpiepsclaryeudpsiresetstiehbneutwtaiatoitnveersotyfhsagttresomuupwnpaldiswetsseutbrhstitihstruyotsuetgdehfmoouitstshamcpodlmeipvnoegsolioftpeteohdefpwioanttdiieovniddourfahalwehnirsgeoh.m pMPoaFiayOtAs19rd,ea2pt0ar0ef4sr.eoTnmthtehedriefnsiuvtlehmteosnaoibfttlhoeerbsieenlgomwpo,ositarsecleinsttemdoanbitoovreiwnagsevceonltlsctnedd opnreSveipoutsemsbaemrpl3i0n,g20sv0e3ntasndfoornthese @ PDageo3 cConutromlOffeicen(DCtO) OUffSiEcnevoifrPoonlmleunttiaolnPPrroetveecnttiioonnAagnednTcoyxics (OPPT) CET i al T[oomamr[w ta[| waom [| ww m m womw |ewceo]| |FEeorstomimas |a oa%r{w wm[m a ow |m osa u|w oor | [[mFoemn[oomw[ | ow[w om ||o oowms| |w e so || [Foroomomreer[ T| w w m w m e mm w wwee | [momme mw we e |m em |w ss | [oI I me [me| J wa | weJ [oJ m |e| IS C L BO WaterSSuppploy Dnisbuten [[C CToImeOr| C | iW ta[w oa rCw rF[:niw | sa || CeC mCer| me| w|1 c w3y2|wN e|Boan | [I I Commow C m C C ww W C J we || T ove C w 0C nCJw C wm o0w | [oC C mmor|aeS |ow |T C aJ w |S aw [oCCw || va [[oC m mee r s aC w sn sJ w e] w oar | [oS Co2m 0 wa w C a a . Je)|| [ostonr[ro|wo| ier | er |ow | me -- BE rire rA r-- Se P`Daogceusment Control Office (DCO) `USOEnfoviffrPoonilmleuctnitoeanl PPrroetveecnttiioonnAagnednTcoyxics (OPPT) f`Trhoemre2s0u0l1tsfportehseenptreedseanb,ovneotiwnidtihcsatteantdhiatnggrtohuenrdewcaetnetrcleevselssoafotfPPFiFOoOAnAhapvreodruecmtaiionnead rtehleatiitv.elyconstant P10leparsoevindoeteatmhaeta,sduurreionfgatlhlegprroeucnisdiwoanteasrsmoocniaitteodriwnigthastahmipslsetec,ol3lMecthiaosn,cporlelseecrtveadtaiofniealndddusptloircaagteeassawmepllle sasamlpalbeosractoolrlyecptreocdeodnureMsa.yA19s,n2o0t04e in the Table, 3M cid mot conduct laboratory duplicate analyseforthe Ho "Tgheeitne haaetsCraomtuatlatgt-epGhreaosvdeed.wTaswtoeowafttehresryesattmeemnst prleatnitntohragtainsuicsewadsotetwraetaetrasllapnrdotcehstshwiarsdtiewaantoerrgsanic, biological treatment system. At this time, ll ofthe process effluent wastowate s treated with activated pcoairnbto.n.aAnldltohfetnhaerterfautretdhperroccoemsbsiwnaesdtwewiatthernosfn-rcoomnttahcetsceooopleirnagtainondssatroercmowmabtienrebedfaotraesibnignlgeddiisscchhaarrggeed tothe Mississippi River. hSaisncbeeJeannpuearrfyo2r0m0e0d;mtohen3tMybCeogttiangneinGgroivn eJapnluanatryha2s00c3onidnuacctceodrBdaFnOceAwaintahlytshies roefqiusicrfeimleunettso.fSaMm'plsing NDPiDscEhSarpgeerMmointi.tTohriisnignRfeopromrattsio(nDMisR)r.epoErftfltueontthweasMitaenweaseortasPaomlplluetsiaorneCocnoltlreoclteAdgaetntchyeipnlatnhteomuotfnatlhlloyn stahempMliesssiasrseipcpoillReicvteerd.asTh2i4s-hiosutrheccomopmomsoitnesdiasncdhadrugpelpiociantetfaonalaylslisoftiseconpldauncttsedprfoocecsascwhasstaempwlaet.ers. All `dTihsechfaorlgleodwuinngdearblMeipnrneesseonttas NthPeDmEonSitPoerrimnigtrNeos.ulMtsN0of0t0h1e4C5o9t,taOugtefaGlrloSvDe 0pr0o1c.eTshsewadsataewiantcelrudeefsflrueesnutlts of all monitoring events thru June 2004. < Pages O`fDfoiccuemoefnPtolColnuttrioolnOPfrfeivceent(iDoCnOa)nd Toxics (OPT) US Environmental Protection Agency Efflu3enMt CMootntiatgoeriGnrgoRveesults PFOA Analysis from SD 001 [amar 15,208 17 "g01 [Eebrusry 12.20051900 | | me 788 1 70 | ma | | [Aprilz3,200 720 [Meyis,200 TTT oso | do90 [doo | dios | oso | Hume11,2003 [hiy16,208 717180 | 164 | pr7 a ey se | | [[SAeupgtuesmtb7e.r21000.3201 05 T7533 0 | | sssssa | | 7 msasa || [October 8,2003 T7739 [November5,2003 T7601 |120 | #0 | 618 | 6s0 | | [December10.2005 [665 [amuary14,2008 "T7060 | 665 | 656 |ie[yer | | [Februaryd,2008 [March3,2008 1 17777132730[ | 75d9 020 |7t6as | | [Apl72008 [MayS2006 geTos R68 | sas 1 65] | 35g] Uuez2004 1755-- T3025 --] A2ir0se0a4st.hmAoesnwtnmsayebsotvneem,ttPoiFarOboeoAmnvolveeeaevnecdldesritvanaiprnirecedovnitsohtruiostumugeenhetotsuitfnrgthoseamtnmhodesrtewparosertcteeswn,tat3reMerphotrartseiantigmpeennrtiposldaanonttfaeJcfuatlliuyvel2aatt0.e0ld3TchateiorsbJdusonynes:tem `fwoarsirenasstoanrst-uunprdeulratiendgttohPsFrOeApo,rttiinsgpteercihondoalongdynhoaswbieseinnfsuhlolwopnetroatbieonef,Wfehcitilveetihnerseymsotveimnwgatshiisnsstuablslteadnce as wel, 5 Pages DOfofciucmeoefnPtoClolnuttriooln OPfrfeivceent(iDoCnOa)nd Toxics (OPPT) US Environmental Protection Agency '`dTiMhsGechDeaxr(pgmeeicsltlweodonuilgnda-lsbltoerneesaxm2tcrdoeanmyce)elnaytnrldaotwai.noAneosfffsluPumeFnitOnfgAlaoinwnotahfveaeMrbiaosgusetibs3assMiepGpfDil,oRwitvfheoerrertxehpseeuMclittsiensdgisifsnrisoptmpriweRaaismvtPeerwFoaOftAe7r500 `concentration would be about 20 ppt (parts per rillon) very near the detection limit of PFOA. DEC AL SA ITEMT ONITU ORIR NGD, ATA `3`TMah'pesp3roMothxDeiermcmaaattn2ueur0fl0asycittacuirrseisan.pgpTorhpoeexricamutaritroeenlnsytaDt90yt0nheesaoictrneefslwuwhoiertrohepto3hleMayprmreeearpovrifootduhusceltymipaornnoudffuaaccciteludirtiPienFsgaOrfAecicaloin-tdlioosctabhteeeirdngwith `fmlaunourfoacchteumriicnaglso.peTrhaetiloannsdbseugrarnouantdtihnegstihtee isnito19i6s1.preIndo1m9i6n2antthleyfaicnidluisttyriwaalsanedxpcaonmdmeedrctioali.nclCuhdeemaicfaillm M`meamnuofraactnudruinmgopflaUntn.dePrrsotdauncdtiinognobfetPwFeeOnA3aMt tahnedsiEtePoAccfuorrraedddiitnio1n9a9l9m-o2n0i0t0o,riTnhgisonsiatndisatrhoeusnudbjtehcetsotefa. MonitoringResults `Groundwater Monitoring `APsFsOtAataendailynstihsegporienvgiofuosrwsaurbdm:issions, 3M selected th following wellsforgroundwater sampling and _-- --Mo_ni--toring Location eSiteeCondition Wells 226R & L Lotcreaattemdecna--tstmoofniintaocrtsivbeaclkagndrfoiullndncdosnoduittihoonfs winasrteeswiadtueurm and shallow limestone groundwater `Wells 220Rand L Lproecdaotmeidnnaonrtthfelaoswt opfaitnhaocftpilveumlaendin re-simdounuimtoarnsd shallow limestone zones Well 2201 Lfloocwatpeadthnoorftphloufmien.active landfill monitors secondary Wells 327R Lroecsaitdeuduimngtrhoeufnodrwmaetrerinenarcsoiurncaereearaera--.amotniotorrs Wells 310R &3171 LgorcoautneddwaitterhefClhoewrpnaitchawlPalyasnitn --thmeonCihteomriscdaolmPilnaantnt E 6 Co Page? UOD fSfEio cnvc iPCroolnu outinroon!m lbOPfrre fieoctevn (oeDnCt nAtOg)tderiTeryoins (OPP) GDreocuenmdbwearte1r s.ampl1esf24on,d Jh2aenis0iyt30m,o3n30it0o0rTiongtpiPnFtOsAwveers colsleectped otn ley15s-1,o200,: A5hAse2.mp0r0oeCc8oeitstiiaongnhseeGsrTooavels,e,3d3McMwlitlihdcsntpfdlcoecnldlddepHlohi,oserrstanemspsdloelsndcinngdsmtiheagmcoenfiostrowreinvgar0nproviyodenmecesreuereof Thegroundte data for ent ndprevious monn evn se shown te Following Table GROUN WED LLMW ONIA TORT INGE DAR TA 'EORTHE 3MDECATUR,ALMANUFACTURINGSITE a 7 261 TT Sor DNNhsonsdme DFM A1a2T/tE0s3 l 201570 WL215b%0d| I oicd0ds5 i2s02 55"% Toi1dd2u0ss3 52T53s7 wio> Fc1ic2do0ss3 Ni0io5o 2 cant Xo oT7/2o1a06/s303 >NJQ 0% 555 ch1a2an03ss o055ma 0">0 foasinss: o2xi5o0s x zi ordss 1765 i2o ri5d50ingRl| 2ia6s7o0 7o5s xoWowr o0G7om5s oNNioSs 2i3i50100 AveThol 2i37760 1S5)o i1a0s67 NIov 0005a35 aTNsDos 3i45er5 ------ 7 OPDfoafcgiuecemsoefntPoClolnttooln POrfefviect(iDoCnOa)d Toxis (OPP) US Environmental Protection Agency cAoosuntmiandmdivincaaatttiecodnbb.eynFteohaetchdxhaaemppsrlie,es.ehHnetoeldwveeltsrhietnTthahbdleaw,aehlse3gr0inRs dawilinodwegHrhkeoaiehonsofusPatgpOolioeAnfg vIaevesetssmmsehaoswua r1ed incthhaenge, `hich i prdicabe considering te slow movement ofgroundwheeexplained above yale ms 2t2e0La,ph2a26lLi,Tainmeds3to1n0eL,swhhoiwchecxttre8melhy lcowotonnonn-deeyteesctaablerleevveerlstosfrPoOuAnv.ALTShessme weellrs saremdrillerd into Effluent Monitoring coe3nn3dt0asdciDtrececotalptyiunrf,gowAmalttebhro,Tmwehnmincaehnsusfecotbivareiirnn.egfcIfnloaimdetdshiTo,bmetasninnymprocofcsoeseieswvmsaratn.eaArfflaocupmroitcnhsgeoCoisptmeyesoisfotDnmestcaietsourcsloarisnen sn3oyMns-t2ceo2mn0tcDaocnyttnacoioonosnlmibnaogtwmaptahcyeusrpciranilgo-o<tphoeediirscoclhnaasrgdrebsoietohsltgeTideenlnnecsostene1eRtsv.rw.PraoTceshsstewecahtnnowgetsnieanpBoessest eh aAsltebvaateNnoPnD:E-SonPtearcmtitcNoool.inAgLwODaOlU2t05d.esTihgenperdocaessOwaastiew0a0e1rAdissncdhiD0rgsp4ndecromiin po Acrossntedoxuvpcaltlaecidnreoadnniadnqnououanrr-tcMeoranlytyabc7atslicst.orl`iwSnaamswptaleteewsra.taeerThsceoalpollecuitnelgd aitstOhhaurDgteecsa0t0(u,rBaswikhteicorhrscPConFrsOiksAtsahnofaileycasims beesnsges tin SmanMapElsysiMisaisnyc7,ohn2de0u0cT3teenldneefserseteeoxEichPvAsrampAlel. sTmhpelsspaetctcoslalmopliidn3gs3a4n-dhsonurecyoempsopsriotosaopedmpeshsooesobod in uhdanetdaerlaAnodlwtaienm2ga0a0N3bPlD2Er0Se04PcemorniittohrNPioFn.gOAALvOmeoOenUi2.t0o3r,inOguteislt0s01orThheedDeecasturuwsmtewnatesr eotonedtismchearged SN Decaar 2" OQuutafratlelr,602100F3CaSnadmpHilsitnogriRceasluElvtsents [Rests Duptisie| Average | iwms TWNAaTwwaaT7 ar] --] oawo TNwaaTTwaa[ T0 o] ] [mI any200 E NA Na E 5] [ovI ember3,206 27.1|7 a] ES [[aemmnaeryts2a7,m20s001821155Twwaa T=] 8 DOUPfoSafcgiEucenmesvoeinfrtPoonClmoleunntrtioaollnOPPfrrfoeitvceeesti(ioDonnCAOag)nedtToyxics (OPP) Tpa4l3esanti.sinTeiescsdpRwiavbwseyarcshohpceeiuscrsadlisalntym,gstphyeroheothlilswnoint.fhnhTshromoeos vsveerrosfc eiJodonefiiely,hte3o0e0uov4edgmlchiotftomPppF,OagAB sipnmhmes chargIe E0h.2e piSorcbuoicspeeasptvrecaccdlocbusterocmiaonnungsiapeohroatfsiehno-gnDogupyotrineonvfaPginopFursoOploeycAreautsbimoiniim.dpeCrsodoen0t,viesnoumdseedAnrRt3sei3.ns6prioDoevsncemkoegmsi ehuhmeser oen o oen osn ApEr5% vrei alow eves s pepo i cCaIoornstctaahucg1mtG,hr2,owvr0teit0se3iri3ca.cLtTOrhLeaspdnodsrdrtuestbhssempMilratosrvicdohffeldw1a4,st2ht0ow0ca5AotnPanFidnggUrscouonmdLvmOautTneeemrsosriouainmostyee Deeca nd. Sincerely, DSMiairfceehctatyeorl3,dAE.nRvegSiaurnlotaontromoreyntA,THesalth, 30M. BBoiwgsi2s5a61.1519 66St55.11P77au93l-3,16M953N2845h(5of14ny4e) `E-mail: masantoro@mcommm cc: MaryDomiRoonm44a10 7