Document m4OvDm236DQrBNr1k3RweYQO

= =m UUppddaattee:: PPeerrfflluuoorroocchheemmiiccaallss aanndd tthhee CCiittyy ooff OOaakkddaallee PPuubblliicc WWaatteerr SSuuppppllyy Oakdale Xe JJuunnee 22000066 ApAessryyuooouuroaacrrheeeaamwwiaarcerae,l,slloo(ccPaallFaCann)ddgssrtaoatuteepaaiggneewnneccliileesss saaerrerevccioonngntttiinhneuuiiOnnnggktocoalmmeoonpinutiotborirclleewvvaeeltslesorofsfuccpphhleeym.miicTcahlaeslpisnurtihnptehoese perfluorochemicals (PFCs) group in wells serving the Oakdale public water aOFdtdhriessuphdeatseue.0 Jt you Know about several recent developments, and the of this update is to let you know about several recent developments, and lhe eps being supply. The steps being aken (0 purpose taken to address the issue. BBBeaagcciknknggirrnooguuinnnddate 2004, the Minnesota Departmentof Health (MDH), working withthe City of BOOsaueakpgkdpidnayalnlfeieonaagnntiddno33lMaM,mte,e2tmee0sbst0etee4rdd,stdiohfrnetinkhMkieininnpggnrewwfsalaotutteeaorrrDfforercopohmamerntttmhiheceeanssetegvvroeeofnun'Hpw:weeaellllPtlshsFttO(hMhAattD(ssHpeeerr)vvf, eelwotthorhoreekoOOicnatagkakncdwcaliilteehc pptshuucbeibldlCii)ccitaywwnadaotfte"err PsPMuFRDpOOpISSly(d(fpepoeverrerftlflwolupuooeormdorooeHocmectaaiblnaetenrhsssBuouallfffsotoehnndeaattpVeeae))rl.fulBeuBseoecrcfoaaocuurhssPeeemFPPOiFFcACCaslsagnwwrdeoerurPeepF:uuOssSPeeddFiOnaannA2dd00(dd2p.iiessrppfoloAussoeeHrddeoaioilnnctthMMainBninoanniescseeosdatocatVia,da,)lttuahheneed M((dIiH-DInBBkHYV)d)diaieissvlyttehhlfoeeopraaemmudopouHutnneotat.lootfhfffaaeBtccaihhsmeeee.dmmiVicTcahaalelluiiIennsBddfrVroiirnnfkPkoiirFnnOgPgAFwwOaaaAttneedristhPhcaFautOtrrMSMenDDitnlHHy20c7c0oo2pnn_ssiiaddAeeprrHerssrettaboobtltbeihesBnssaaaffsaeeedfntobVrthappeleeuo[oepIplBleVttoo dforrinPkFdOaSilyisfo1 rpuaprttopra bliifleltiimone. The HBV for PFOA is currently 7 parts per billion and the HBV for PFOS is 1 part per billion. IInniittiiaallllyy,, tthhee 2In002400M4,DtHhe In 2004, the hMMMMasDDDDtHHHHeslllltaaaaebbbbooootrrrhraaaaettttooosorreryryyvy, eddddneieiddvvweeennllloooolttpspeehhoddaanvvaaeea mmaameoelltantahhbtbooohoddrlraaytfttboorbrrrayysddieettsteetaeesstccntttdffiiononrrrggeddPpPeeoFtFtreeOtOccetAtAdiinnaarggennsPddPuFFlPPtCCsFFssOOfiiS.rnn ggrroouunnddwwataeterr.. thSeisnectewtoe Since late 2cC`whh0eee0lmlm4siicMacanalDdlssHltteoohvtetahhlsseetelccsoitttwy.ee.dr tTTthhhheaeensttewtvwhoeonccdhwheteeeemmlciltsicciaooalnnlss mahhiaamvvtoeenibbntheetleeywnnobddaewesettlieeslccstat.eendddLiiernnevpemmloeesraatosesufdurrParaebFbslOlueeSltaasmamfnooodururntPthtFssesOiiennAtffwioonouurtrhe wells and levels lower than the detection limit in two wells. Levels orPFOS and PFOA in the Slightly exceeded the current HBY for PFOS was designated a5a backup wll. oovveerraallll cciittyy wwaatteerr ssyysstteemmhhaavvec ggeenneerraallllyy bbececnn bbeellooww tthhee IH-IBBVV;s; oonnec wweellll tthhaatt hhaass aatl ttiimmeess slightly exceeded the current HBV for PFOS was designated as a backup well. AMMrooodudinfifdyyitinnheggwttohhreel.HHBBsViVessniffsootrrsPaPrFFOOsAAtudaaynniddngPPPFFFOCOsSSand the way they actin the environment, and Aeepfrfrffooeeccucettsnsssdeoostnnh.ellaaSwbbcoooirrreaalndttoot, rrisyysctiaaaestnnniitMmmisaDatlslsHsaaaraennrddestoocunnodnywwsiotnoargrnkktePelrFryssCrwwsehvhaioonedwwwietehnrrgeeewteehxxaeppysooetsshseeeddtyuttadhhcrsrtoouiaungngdhthheemmvaeaannlnuuvufsifatracoictnntugumrrtiienhnneggt, and pImroplciecsasteiso.nsStcoieenntisstuseatthMaDtHhe aarceticoonnssttaanketlnyarervpierwotiencgtitvheesoef spteuodpiels'sanhdealthevaluating the implications to ensure that the actions taken are protective of people's health. {SSoiivnniccceeol22o00g00i22c,a,lwwshhteeunndittehhseeaosorrtiigghiinynaalbl eHHcBBoVmVes awwveeirlreeabddleeev.veellooPppreeeddi,m, iMMnaDDrHHy rsseccvieienentwiotstsfs hheaawvveeibbneefeeonnrmrraeetvviiioeenwwiiinnndggicates tts{ohhmaxateticttohhfoleorccgMuuicrrDrareelHnnsttttuHHodBeiBevVsVaslasuffoaotrhrtePPtyFFhbOOesAActuoaadminnededs aPPavFnFaOdOilSSacbanlnlecee.ueelddaPtttreooebtlbiheemerriseenpvieaics~sieefrddiecvtoonieulowmowbweoerefr.rnvveaawUlluuneeisnst._fotrhIImatt twwaiptililrollontacakikeneesdiscscoaoamnmteees btberiecmeccveooamflmouprpaltelMeittoeeDnddH,t,owwteoeeveaarlvrcuacalutuuseasiitnPnegFgtChtteshheesitnmmuoddosrisetitsnppkarrinoondttgeecccwtataiitlvcveereu.lvvaaatellutuehetthhsaapttewwcoiofuiulclddnuilimkkecblleyyr.rreessUuunlltttilffrrtohomamt theprocess the can reevaluation to evaluate PFCs in drinking water. EEASxxpppaaatnnddofeeddeffTToerestssttiitnonggexffpooarrndPPeoerurrffiluuunodorerroosccthahenedmiincicgaalolsfsthe PFC contamination, in March 2006 the MDH laboratory As part of efforts MDH laboratory developed to expand developed atest (Method #555) our understanding of a test (Method #555) forthe for fiveother chemical PFC contamination, five other chemicals fom the in March from the 2006 the ERRRTE im emtof Hd Divison of Evian i i Asstan Conlon Uni Minnesota I )eparhncnl o1" Health4, l )ivisien of Environmenttd Healfl~ 4, Site Assessment mad C<msull~tion IJnit VID)! 5130407 105 0, r4s dhstn 651.201.4897~ or 1.800.657.3908, press 0 4, ~t.xx~v.h~allh.~atenm.us [BEFeRTMNTor ntATH) Exon 3217 33221177..00000011 MAOTAGTETS 3MA01467679 ppeerrfflluuoorroocchheemmiiccaall ggrroouupp:: PPeerrffluluoorroobbuuttaannee ssuullffoonnaattee ((PPFFBBSS)),, * PPPeeerrrffflluulouoorrrooopbpeuentnattananonooiciiccaacaccidiidd(P((PFPFFBPPAeeA)A,)),, Perfluorohexane sulfonate (PFHS), and + PPeervfflluuoorroohheexxaannooiice aacciidd ((PPFFHHXxAA).). Some of these chemicals have been detected in groundwater samples from monitoring wells at the Abresch disposal site in Oakdale and the Washington County Landfill in Lake Elmo. The mcchhoeemsmitciracelacsles.n. t IIwnnattthheeer ccsiiattmyy pwweleellsllssf,,roPPmFFBBOAAa,,kPPdFFaPlPeee'sAA.c, itPPyFFwHHXexSlSl,s, awanneddrePPaFFlHHsoxxAtAeshhteaadvveefbbbreeeethnnesffoeouuannddddiaatttiollnooawwl lleevveellss;; PFBS has not been found. Three of the additional chemicals (PFPeA, PFHxS, and PFHxA) were oonnllyy ffoouunndd iinn wweellllss tthhaatt hhaadd pprreevviioouuss ddeetteeccttiioonnssooff PPFFOOAA aanndd PPFFOOSS.. HHoowweevveerr,, PPFFBBAA wwaass detected at very low levels in wells that previously had no detections of" PFOA and PPOS. DDuueettoo lliimmiitteedd rreesseeaarrcchhoonn tthheessee ffiivvee PPFFCCss,, wweeddoo nnoott hhaavvee eennoouugghh iinnffoorrmmaattiioonn ttoo ddeevveelloopp HBVs for them. Based on the chemical characteristics of these five PFCs, it is believed that they should be less toxic to people than PFOA and PFOS. MDH has decided to use the revised HBVs for PFOA and PFOS as substitutes until sufficient information is available to develop HBVs for Xn these chemicals. Using the revised HBVs for PFOA and PFOS as substitute HBVs for these chemicals will give an extra measure of protection for people's health. Noxi stops MDH and the City of Oakdale will continue testing of the city wells each month. A treatment plant to remove the PFCs at wells #5 and #9 is under construction, and is scheduled to go into operation on November 1, 2006. In the meantime, the city will minimize the levels of PFCs in the water supply by careful management of the city wells. This management strategy depends on water demand during the peak summer months, the amount of rainfall, and on citizens taking steps to conserve water when possible. We strongly encourage citizens to cooperate with the possible. permanent odd/even watering ban (with exemptions for new grass and certain businesses)~ to rreeppaaiirr pplluummbbiinngg lleeaakkss pprroommppttllyy aanndd ttoo uussee ootthheerr wwaatteerr ccoonnsseerrvvaattiioonn mmeeaassuurreess aass mmuucchh aass possible. We realize that this update, resulting from addilional knowledge and information, may cause ssMooDmmHee ccwooinnlflfuuscsioioonntn.i.nuIIeffyytooomuuohhnaaivvteeorqqpuureesistvtiaiootnness,,anppdlleepaaussbeeliffeeceelwl efflrrleesee attofofcceoocntntetadaccbttyaacnnoyynootfafmtthiheneasstttiaaoffnf llfiisrsttoeedmd bbPeeFllCooww.. MDH will continue to monitor private and public wells affected by contamination from PFC disposal in Washington County and take appropriate steps to protect people's health. We will aallssoo ccoonnttiinnuuee ttoo ggiivvee yyoouu uuppddaatteess aass nneeww iinn|fborrmmaattiioonn aanndd ddeevveellooppmmeennttss aarriissee.. [iere oe [Ei Questions about... Contact person PIio~le ~lnml~er E-mail address [Flat concerns |TinRally |G101-0910 |Tameskelly beatsiemns | Health concer~s Jim Kelly 651-201-4910 James. kelly~i~health, state, ran. u s PFCs in groundwater Ginny Yin$1in$ 651-201-4930 Vir~inia..vinglin~((t_) health.state,nm u s City of Oakdale City of Oakdalc, water Brian Bachmeier Chris Sontcrrc 666555111--777333000--222777434000 | BCChhrriraiinss@ @iccciii..oooaaakkkdddaaalllcee..,nmmmnn..,uuusss Ibis intbm~ation sheet x~qs prepared in cooperation xx.ith the Iede~tl ASeney Ibr Toxic Substances and Disease Regis~.:, Minnes~Ja I )eparhnent ~1" Health* ] )ivisi~m of Environmental Healfl~ Site A~essilletl[ ~.Uld C~m~ullation ~hdt 651.201A89% or 1.800.657.390S~ press 0 ~,~x,'.h~llh.~ate.nm.us 33221177..00000022 3MA01467680