Document MJoawmV1R7kYn1qMpYr5oY3m9

JE lai 3M Sie Oper S7A0O8PmR1sass ZeHQ -- 0406-00394 [ii ertified ai QeEtd p-- 81---39Y 206 APR2T PU 2:5h Secuifiedon AR226- 3639 F Apia, 2006 ContiAgR226-3643 2 EER Nooy S53 = =f Document Processing Center z 25 EPA Eas--t Room 6428 Attn: Section 8() - 5S Sane UE OU1f2Sf0iE0cPePoAefnPsoylllvuatniioan Prevention and Avenue NW Toxics. 14 EE -3 Re: TSCA 8(e) Substantial Risk Notice: Sulfonate-based and Carboxylic-based SFlEuHoOr-o0ch5e9m8i-c3a7ls3,-DRoecskueltsNofso.m8AEnHaQl-y1s1i8s0o-f3G7r4o;un8dEvHaQt-e0r38i1n-t0h3e9v4ic;inity offormer Oakdale Disposal Site To whom it may concer 3bEanMsmeridsonsMumuboemrniottcathlienmLgiaatbhloisrsa.ntootr3iyMceRehtpaososrurtepcpNeoln.etml0ye6nr-te0c1it5is1vp)erdefvotirhoeguresonsucunlbdomwsieasdtseairnoanslsaymtoipnclaeslsurlcefapolonreytlctGaendMdicnatrhbeoxvyliic-c ofthe former Oakdale Disposal Site (Site) in Oakdale, MN. From the late 1940' until 1960, a varietyofindustrial and municipal wastesweredisposedofata property know as the Abresch site in Oakdale, MN. This location is also known as the Oakdale oDuitspsoyssatleSmitweaasndinsutnadlleerdw0entreamnoevxeteannsdivceonstitaeinrseomlevdeinattiiomnp/acclteaendupshianll1o9w83g-r84o.undIwna1t9e8r5a,tatphumSpe- "This system has been in continuous operation since installation. 3M has been leadinag study, with involvement from the Minnesota Pollution Control Agency (uoMrPoCcAh)emaincdalMsinantehseotSaiDte.paIrntamnenstaorfy Hpehaalstehof(tMhDisH)a,setosschmaerna,cteexriiszteitnhgeoprieseencaendofnear site `pmroonviitdoerdinignanEdxypeunmpS-touudtywNeol.lsPwOe0r0e1m4o0n,itIonrteerdimforRefplourotro#c1h,emeinccalloss.ed.ResAulmtaspfrdoempitchtiisnwgotrhekare alaocatbiotnsofotthbecsaetwienlglsniisnalasdodenocnlossemdoansiFoingnurgewe1.llTs.heFroeusruoltfstfhreosme tmhoirsieoarrliynwgoprokinwtserreeuosemd site and five are in close proximityto the Site. The location ofthese wells is provided on Figure o2,reenmcelonsteid.oneRedsu3lMtsEfnrvoimrotnhmeefnitrsatlrLoaubnodroaftosraympRlepionrgtfo(rNot.he0s6e.w0e1l5l1s).are contained in the "The new wells were constructed to sample from four different geological strata: alluvium, Platteville limestone, St. Peter sandstone and the Prairie du Chien group. These are depicted on Figure 3 for the Site. Results for fourof the five offsite wells are below the limitofquantitation oR 27477 000001 ((0p.p0b2)5fonrgc/amcLh)afnoarlyatlel.analytes. Levels in the fifth offsite well are significantly less than 1 ng/mL `While 3M does not believe that anyofthese data taken alone or cumulatively meet the "tosuabsssteasnstifalluiorsokc"hermeipocratlinegxptohsruesrheolpda,thwweaynse.verTthheerleefsosrer,ecwoegnairzeeptlhaecionnggtohiensgewroesrukltbsyinU.tSh.e 8E(Pc)A docket as a supplement to previous submissions. I(f6y51o)u7h7a8v-e51a5n0y. questions, please do not hesitate to contact Gary Hohenstein at Sincerely, ZTine E. Reed StEanvfifrVoincmeenPtraels,idHeenatlth and Safety Operations Enclosures 000002