Document B84x2ey4REywbRYkMQjkKOQkX

. . Ps ff 3M SKaatrriineeE.nRenct, PAD. ISuMeEymiOrpoernamteinotnl, Heath and RE-- CEIVED S9Fopa0,O0BBaunshM30AN3ve1$r5a1,33B-3u33d1i 4225.26 Sa( va Certified Mail T40IT7pRE HQ TBO- 3724 2005 AF FEHR- 040600374 April 14,2006 Con V NO op, DocumentProcesing Cener AR 226 - 33,631 OEfPfAiceEofa~PosRllouottimon6P4r2e8veAntttino:nSaencdtiToonx8i(ccs) SE 1U2S00EPPAennsylvania Avenue NW I(nya ARIE 3 2 3S3232 z 3a3 o2 oF Ld Re: TSCA 8(e) Substantial Risk Notice: Sulfonate-based and Carboxylic-based 75 272 Fluorochemicals, Docket Nos. 8EHQ-1180-374; SEHQ-0381-0394; [RE OSaEkHdQa-l0e59Di8s-p3o7s3al-SRietseults from Analysisof Groundwater in the vicinityof form=e ~~5 v To whom it may concer: wo 3M is submitting this noticeto supplement ts previous submisosnsiulofonnyslandcarbaoxylic- oEbanftsvehideroffnlomureomnretorcahlOeamLkiadcbaaollrsea.tDoi3rsyMpoRsheaaplsorSrtietcNeeon.(tSli0yt6er-)e0ic1ne5iO1va)ekddfoatrlheeg,reonMucNnl.odsweadtearnaslaymtipclaelsrcepaolrtl(e3dMin th vicinity From the late 1940's until 196va0rie,tyof industrial and municipalwastesweredisposedofata opDruiotsppseoyrsstatylekSminwtoeawsanaidsnstuthnaeldlAeebdrrtewosecranhenmtsoitevexetienannOsdaikvcdeoansltieat,inrMesNmo.eldvieTanhttii-somnlp/oaccclatetaeinodnuspihsianalll1so9o8wk3g-nr3o4o.wunndIawnsa1tt9eh8er5Oa,taaktdhpeaulmSeipt-e. "Thi system hasbeen in continuous operation since installation. (3MMPhCaAs)beaennd lMiennaesdaotsiatunDdeygp,arwtimtehnitnovfolHveeamletnht(fMroDmHt)het,oMicnhanreascotteariPzoeltlhuetiporneCsoenntcreoolfAgency mRounoirtoocrhienmgicaanldspautmtph-eoSuitt.welIlnsawnecraerlmyopnhiatsoeroefd fthoirslausosreoscshmeemnitc,alcsx.isiRensguolnt-ssiftreoamntdhinsewarorsikteare pTrocoavtiidoends ionftEhxeysgeweenlSltudyaNlos.o ePnOc0l0os1e4d0a0sIFnitegruirm R1. epTohret 1re,suletnsclforsoedm.tiAs cmaarplydewpoircktiwnegrteheused Siat5e.abnadsififvoeralroecianticnlgosneinperoaxddiimtiitoynatlotmhoeniStioer.inTghweelllosc.atiFoonurooftfhtehseesewemlolnsiitoprrionvgipdeodnosnaFriegounr-e a2,foernecmleosnetdi.onReedsu3lMtsEfnrvoimrotnhmeefnitraslroLaubnodroaftsoarympRleipnogrtfo(rNot.he0s6e-w0e1l5l1s).are contained in the TPlhaettneveiwllewellilmseswteornee,coStn.stPreutcetresdatnodsstaomnpelaenfdrtohmePforuarirdiicffdeureCnhtigcenolgorgoiucpa.l sTtratha:aarelelduevspiiucm,eted on Figure 3 for the Site. Results for fourofthe five offsite wells are below the limitof quantitation 000001 294909 ((0p.p0b2)5fonrgc/amcLh)afnoarlyatlel.analytes. Levels in the fifth offsite well ar significantly less than | ng/mL `While 3M does not believe that anyofthese data taken alone or cumulatively meet the 1"0suabsssteasnstilaulorriosckh"ermeipcoratlinegxptohsreusrheolpda,thwweaynse.veTrthheerleefsosrer,ecwoegnairzeeptlhaecionnggtohiensgewroesrukltbsyinU.tSh.e 8E(Pc)A docket asa suppletopmreevinouts submissions. Ifyou have any questions, lease do not hesitate to contact Gary Hohenstein at (651) 7785150. Sincerely, StKaaftfhVriicnee EP.reRseiedednt Environmental, Health and Safety Operations Enclosures 000002