Document mbBkwxpgLvxOg93mqeEggzL4g
M MIINNNNEESSOOTTAA PPOOLLLLUUTTIIOONN CCOONNTTRROOLL AAGGEENNCCYY RREEMMEEDDYY DDEECCIISSIIOONN DDOOCCUUM MEENNTT W WaasLshhaikinneggtEtoolnnmoCC,ooMuuinnnttnyyeLLsaoantndadfiflilll
Lake Elmo, Minnesota
PPUURRPPOOSSEE
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The
The
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`The goalof the selected remedy is to protect public health, safety; and the environment in
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in
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EccArnriicvttteieorrriiroaanCuumEsseeeRnddtCat1Lol0ARss,eee,lls4eepc2ctotUnrres.eSmem.eCeaddn.iideSesseLciuuatnnibodidnleeirr9tytt6hh0Aee1cSStettotaatrtseeeMqSSE.uuRTppehLererAffsuu,enncddMriilltnaaenwwr.i,,aSttthahareete.MMaiSlinsenoncnetcseioosotonnatsa.1is1t5e8n.t0w1iteht
ssEeeqnq.v. iTTrohhneemsseeenccrtriaittleeRrriieaasmmpaoaynysbbeeeasnsuudmmLmmiaarabiriilzzieteyddAaassctffooollrlolMowwsEs~RLA, Minm Stat. Section tl5B.O1 et
+ cooomvvpeerlraailllal npprcrooetteewccitttiiohonnaopopfflhhiucuammbalaennohhreeraaelllttehhvaaannnddtatthnheed eeannpvvpiirrrooopnnrmmieaentnett;;requirements; loclnoognm-gtp-tleeiarrmnmceeeffwffeeiccthttiivavepennpeelssicssaaabnnledd oppreerrrfefoloerrmvmaaannntcceae;n;d appropriate requiremems; srheroderudtcu-tctitieoornnmo,foeffttfooexxciticciiivttey}n,,emsmosb;6ibliilittyy,, oorr vvoolluummee tthhrroouugghh ttrreeaattmmeenntt;; + iismhmpoplrlete-mmteenertmnatbaeibflifileitctyyt;i;veness; puccboolsstti;icaannaddcceptance.
o public acceptance.
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control the source of contamination to the ground water at and from the LandfiI1.
t`YThhheeepMuMbPlPiCCc,AAaCCnodommfmiimtssissisaoibononeuertr,,thuueppoosinntecc,oohnnasssiidddeeerrtaaettriiomoninnooeffdtththheeateevvtaahleluuraatetiimooenndccyrriistteeetrriifaao,,rctchoomminmmethenintstssRffDrroDomm tfiihssreorreempaaustsboholennriacaeb,blllaeeenadaasnnefddaancnntdeesccateebhssrosseauaarrttyytehnttoeoedpspirrrtooeetl,teeehccaatstsettohhdfeeehtppeauurzbmballiriinccdeohhdueeasatlhltstahhutbatashnnteddanrwwceeemelslf,efaadprryoeelslaaeunnttddafontttrhhtseehoeeirnnnvvtiihrriosonnRmmDeenDntt cfcStrooaontnm.ttaaSmmtheicienntarainenotlntesssasff1rer1oo5ammnBd.tth3hte9eh-rss4eitt4aeet5eaansserrdeeqqreuuliierraeesddebboyyfMMhaEEzRRarLLdAoAusaannsddubtthshteeaLnLacanendsdf,ifpilllollCClullteeaaannntusupporAAcctt,; MMiinnnn..
Stat. Sections 115B.39-445.
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22778844..00000011
Exhibit 22778844 Commune movie |
aMao2645872
3MA02645872
smCiertae A The Washington County Lan.dIi!l is a closed_ m~lined landfSll that contains approximately la 2.57 million cubic yards of mixed municipal solid waste. The Landf!ll was permitted by LS. the MPCA and is located in ~he City of" Lake EImo in Washington County, Minnesota LT (see Vigure 1). Tt~e permitted area is I ~0 acres whiIe the waste footprint comprises about
35 acres. Response act,ons previousl.,/m~plemented to address releases at and from the
I LLaannddfifillll iinncclluuddee aatn~ aaccttiivvee ggaass eexxttrraaccttiko~n ssyysstteemm tulsseedd ttoo ccoonnttrrooll tthhee mmiiggrraattiioonn ooff llaannddffiillll E Ih gas, a ground-water treatmem systera ~xsed to co~tain and treat releases of volatile organic LEETT compounds (VCs) to the ground water,, and provision of carbon treatment or connection
to a public water supply fbr residences with we!is atTected by ground water contamination from the Lac~dfitL
a
3
AL
{5
N
Figure | Location of the Washinglon County Landfill Figure 1 Location of the Washington Comity Landfill
a Ename els Land use adjacent to the site is a mix ,~)f open space/park, agricultural, and residential. a Many residents living near the Land[ill historically obtained their potable water fiom IS private; individual wel~s that are completed in the drift and bedrock aquifers. Lakes and Ts, streams exist in the vicinity of the site Bedrock be,~eath the site is highly fractured and Ra ground-water flow, although complex, is to the south and southeast in the surficial or drift BL aquifer and southward in the Prairie du Chien bedrock aquifer. Public access to the
Landf!ll is prolaibited.
22778844..00000022
--_-- 3MA02645873
SITE HISTORY
SITE HISTORY
d`TTihhseepoWWsaaaslshfhiaincniggltitootynn
pCCeoroumuinnttttyyedLLabannyddftifhillell
was the MwPaCs Ath.e
first mixed municipal solid waste WfiarssthimnigxteodnmaunndicRiapmasl esoylicdouwnatsitees
(MSW) (oMpeSrWat)ed
the
dLL1ai9ansn7dpf5doiflswilalh.ll.efTTnahchteielhieLLtyasaninpdtdfeeifrwilmllalistbbteeecdgglaaobnsnyeaadtcchacceneedpMpttaiiPnnCcggoAvwwea.arsWststeeyasssshtiinnienm1g19t9wo66an99saaainnnndsddtaRddliliassemdcc.oosnneVttyoiinlncauuoteeuiddnletooipeopesrergroaaatpntiiieoocrnnassteiidnn the
ccr1eoo9smm7i5pdpeoownutuhinnaeddlnsswte((hVleVlOOssCiCtisens))w19aaa8nns1dd.cmmloReesatteamadllssseawnwyedearraneedcddoiWivssacecsorohvvsieeynrrsegeteddtmoiinnnwcssoiaittuseenitmmnioseontMsnitiiltoenordsrti.iannVlggloewwdleaaeltlilllpsseuaaomnnrpgddaannnneeidacarrtbbryyeat
rscseyoyssnsitttdeaeemmmnnitnnieaaealtarirwtotehnhleelisnssioon1uu9t8t1hh49e.e8aa1sstt
RccooammmesereroyofaftnthhdeeWwwaaasssthteeinffgilltllotntoocaaodduddnrreteissesss
tihnestgarlloeudnadwpautmerp
the groundwater
and
treat
contamination in 1984.
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taaossfaa
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sswtaeatrteee
SShuuoppoeekrreffduunnuddp
sstiiotteet
from 1984 to hfreommun1i9ci8p4atlo
1995, w1a9t9e5r.
During this sDupuprilnygftrhoism
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ar;grderedoaaruttemnmsedsen-nwottfassftyysesisrttteecemmo.mn.itgaIIrmnnatiaaniddaoddtniiitotoiinoofnnbm,,eyttthhihmeeanpLLeara.onnvddfinfliglll''tssheggaaLssaccnoodllflleielccl'ttsiioocnnovssyyessrtteaemnmdwwgaarsosuiinmmdppwrrooavvteeerdd ttoo
address off-site migration of methane.
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PPRFCCss
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arhrepeepssaliitssi,ttcaoaannitltit,occsnaatsrar,ppineeatstns,sdgaacrnneoddaastffeiaa,nbbrgarisinccdsfs,o,wrffiaiprrtaeeecfrfik.igagChhgttoiiinmnngggmfsfoouonacamhmu,,saesccsoomaaiitntliicnknlggucdafferootrrnoppnoshhn,oostttciooocggskrrmaaceppothhioiickccawdffdaiiilrmlte,i,,vsiietnnsadd,inuuas-snttridiaall
a`ammpnaadpnnlyyihciaoogtthtihhloeeynrrsmp,porraboonidddluuecccsotis.na.tgTiTnrhhgoeesunccfdohherewmmapitaiecccraak.llagsUstntirnriuuigcclttsuvuurreceerohyofafrsePPcmFFenCCitlskslymmcataahrkkteeoersnesswtt,hheceerommesmneeoxextttirrrceeegmamudeledlalyytitiillovoonennssgg,orallaanssdttiinngg
ShahteneaadatlletthhhitgobbhaaulsssyeeeddmitssosttbaacinnlleddeaaairrnnddussgprssaoeeuutttnhffdooorrrwiPPtayFFteCCursns.odUoerrrnwtwSialaassvttteeeerssylccaroowenncttteoaaniittnnlaiiyknnegtghoPePrrFFerCCeswq.su.eiMrMreieinnnonotnehesreseorogsttuaatloaiiststioatthknheees
ffoiirrrsslt response
aaSccttatiitoeonntssoffuoosrrerreeitllseeaacssleeesasonouffpPPaFFuCCthsottrooitttyhheeuneednnevvriirroSortmantmaeeelnnattw. to take or require others to take response
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3
22778844..00000033
M3MA0A206264455887744
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httthiehleaeelbbbthooodddeyyyffooeforcrtrttshrheeeiInaeehtnniuvvvmieiarrlonyonsnt.mmoenenLgntet)sp).,serPpiisFoRCdkCsnsoaaawfrrteneeraaassibussoooguccetiisaatPittoeeFdndB)wwAaiintatdhhltcpehlleoeeruvsvgiaash.teeetddnitrrsii(ssdmkkossuocnofhofctcelbererrstetsaaaiiknn daaoddvwveenrrssieen
fbbhoiieorcaaalPtcchFccOuuemmSfafeul(cla0att.st3iivivuneeg/httlhthua(annnmaitntchhsree.oLoogtterhhsaeesmrrsisttwwpkoeo.nr.oTfTwthheneer)a)MMbaoDDnuHHdt
PhhFaaBss Aeessttaaalbtbhllioissuhhgeehdd iHHteeiasallmtthhucRRhiisslkkesLLsiimmiittss PFOA (0.5 ug and a less formally.
bbyy
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PBA (7 ug). per liter)) and PFOA
PFBA (7 ug/l)o
(0.5
ugi1)
and
a
i!ess
formally
"
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8822 uugg//1l aatt tthhee detected at
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ccaootnnaccneednntntrreaaattriiootnhnsse Lbbeeatntwdwefeielnnl annnoodddehetateesccbttiieooennnaadnneddteic122teudugg//il1n.. residemial wells near the Landfill at
eUUnnnglliiinkkeeeeccruuerdrrreelnnitntellyry aoonppdeerrlaaettaiincnhggatllaeanncddoffliillllelsc,,tttihhoeen WsWyasastshehmii,ln~ggattnoodnn sCCooomuune:oattyfy LLtaahn~edafdvi~alis!ltl eddooicesssbennlooittehhveaadvveetaoannbe `eiingnnrgccoioounnnnetdteaa-crcwettadtWweilriitnthhceorttnhhateenadmggirrlnooeauuatnnciddhoanww.taeattceeror..lleTTchheteiroreenffoosrryees,.tehtmt~ee LLaanandnddfstioSlmlll eccooonnfttitihnneuueewssa(tso0tebbeiesaabsseooluiuerrvcceeedootffo be
ground-water contamination.
AcAonggtrrrooouulnnfddu--rwwtahatetreerrdeppguurrmaadppataainnoddnttorrefeaagttrssoyyussnttedemmwawwtaeasrs biimympprlleeelmmeaeesnnetstoeeddfiiVnnO11C'99s88.44 TaatthetthheseyLLsaatnneddmfifiilllnlcttloouded a sescfppofrrneaatcyrytoiiilvrmrefiuligyrgatchatooetnrrototdrrooeltgwrlereeaaadldtaaVVtniOOodCnCtsrosefarrtegeemrmdoooutvvhneeedddgwrrfroaootuemmnrdbttIhw~yeearggerrrleooauufsonnerddsVwwoOafCattsVee.rO:aCaHttostt.whheTeevhLLeeaarnns,yddstfiithle.eIm.sTTyhishniticsselumssdyywessatdtesemam ieiimsmffpnpeolclteetmimevfeeefnnletycteetcddiovbbneeetarfftooolcrrloeeendddtiriassonccldlllooitssnruuegrraoeetreaadrnnetddhmeddoeevgttieernoccgtutiinoPod~nFoCwofsaf~PPf:eFFrrCoCtmbccrtcoVhnnetOtagaCmmrisoi.nunanHatdtoiiowownaneteavatrte.rtt.hhIeetnhLLefaaanscndtyd,fsiftaieldllmldiaatwnniddoansiiattl iggisnrraoonduuovnnteddretfwwefeanacttttleeiyrrvemmploaoantnyiceittodoonrratiirnnrogogllliddeneeigttneeortrmrhmeriiennmmeeoddovvttehhimnaaetgtnttPhtheeFoCppfusuPmmfFrppoCmaacnnotddhnetttrraegemaaritotnussanyyndssttisewcmimantmemtrha.aeyyIgnhhrfaaoavvuceent.dawdadteitri,onal d"TinTihhsaeecdhvwwaaeratrgtteeeer,rnttrtlaaeybbsllupeelltauuiynnnedgddeeirrnanneareoaamltteohhuittnnhhdeethissenppgmrraaeoyyfvfiieermcrmiitggeaiannttrtictooohnnef aPagrrFreeCoaauwnwcdaoasnswtaaaatrmrtetiiirffniitadchinaaattllsllymyinarryaathiisseheeaddgvrbeboyy~imntthcdhereewaasteedr.the `dmmisoocvvheeammregenent,toroeffsuPPlFFtiCCnssg ooifnfffsaSimtiteeo;;uppnaadrrtitniiccguulleaafrrflleyyctt0ointthrtheeeceaagssr.to.und water-~hat may have increased the
IItnnrffeooarrtmmmeaantttiioosnnysrretecceeemnntotllpyyerddaiitsseccdoovvbeeyrreetddheaaLbbaoonuudttfittlhhlee oeepaarerlrlyyatoooppreesrraiatintodiri.o,c~naotofeftsthhteheatggrrtoohuuennsddy--swwtaaettmeerrappouunmmepptaaimnnedd. dPdtroiiesisacncththmaaLrergangeketdedsyttlhshoeteceampptuuedmomppspeeoeruddatthaaeendnaddsbtuyunnottfthrreteehaaLetteeaLddnandggdfrfrioilollmulon.apddcSwwroaaamtoteeerrrsPttihFhnrCrdoosiucugagchthuerasarestsnhtttoaolrtyrmtmhfeosseue.wqnwydeesrrtieniminnEttaoaogtElEoaeanggeLllaeetikmee `EPmmaoaagiyynlethhLaaPvvoaeieknebbteeloLeecannaktttereradaannrsssepopobuoerrthltteieededavsttetoodoEEftaaotgghhlleaeevLPPeaooinoinrndtitfgiLLillnaaakkSteeoedmiinaettthPhtiiFhsseCmm3saanMcpnumeOrerrare;k;ndaatalllyltthehtoobDuuuiggnshhdpossisoonammlEeeaSgiPPtlFFeeCCaLssnadkmine wEweaergreelettrPraaonnissnpptooLrrttaeekddettaooretthhbeeelalaikekeveebbdyytoRRaahllaeeviigeghhorCCirgreeiztemkk..ted at the 3M Oakdale Disposal Site and "TPThahreekMMiannindnneLesasooktetaaEGGleeiooolloogHgieicicagalhltSSsuunrrevvieegyyhccbooorrm~hp:oploleedttsedeiadna 2dd0oo0ww7.nnhhToohllieesllsootgguggdiiynnggshpporroowjjeeedcctttiihnnattththheee-TTbaaebbdllryyonnck
Park anct [,aRe Elmo Heights neighborhoods in 2007. This study showed that the bedrock
a
22778844..00000044
M3MA0A206264455887755
aaPqqruuaiiiffieecrrssduaarrCeehhhiiieggnhhllayyquffirrafaecctrtuusrreaednd.d.
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and
and
wgPwuaraaattrieerarrineiitndenetuthdhC,ee hFbbileeedodnrwrooawcqckkauisttfhehmrrreosoauuasggnuhhdrieisndhsnotiawsnlle2atd2toiaotfhnlaottoflhcfeaoaadmd1dt8dip5tiiltieiwootoeennlanaclllsapppltuuoummgrgpepe-d-oo.ofuutctTohwenelteallrlmesasiuccnlooatuustellidddndnngioorctotaubbtneeedd that
tugthhnueecarroreeannaatrrtaeeemeinndnoo.aFctcooelondnswsiwissewttleealnnsttinmffltleohoawewsumppriaaedttdstteetirronnnfss2t2bbweeoottfwwcteehoeeennnt1aaa8mdd5ijjanawccaeeetnlneltdst wwlweoeelgllllglssse..dhFF.aooTdrrheneexxoaravemmesprupltllietecs,,aailannnfdlicoawtewdhitlheat
ut~hhneecofflnlootwawmiininnttahhteeedccoownnettalalmmiininntaahtteeeddmwwiedelslltlssowwf taswsobb~oc)tothhntddaoomwwinnnwawateardrddwazennlddlsuuhppawwadarnrdd.o. vertical flow while
IIinnn atadhddedidittriiioofnnt,,oppruusmmurppfiiicnniggalrraaattqeeussifrreeerqquuwiiorrueedlddttoonerreeemdmootvoveeinaacnnrddeattsrreeeaasttiPgPnFFiCfCicccaoonnnttltayammiininnoaarttdeeeddrggtrroooauucnnhddiewwvaaetteaerrn iiifnnlncortrhwceeaaissdneetrddoiftfllereoavvrceetlsluourorfeffsiPPcoiFFuaCCtl saiccqdaaueppittftuuehrrreeewpaauorrmouopulud-nnoddnuettthehdeesyLLtsoaatnniednmdfc'firislell.ac. saSSepootsummirgeeenicczfoooincnneatt.anammtAliylinnsaiaonn,ntotsisrndccceoorrueulatlodsdeaccdcoohpnniuiteimanvpnueieeannttgoo fwwaldoooduwiultliddionnllti,oikkmeferllayayncaddtugeervwieanastgteoertruhttteshhieledaeddrrgrtieihfftetvaaopqqluuuuimifmfpeee-rroaoaufnntdtdsryeiiansntttteeeedrrmffgee'srrreeocuwawnpiidtttuhhwraerreetzsseioirddneewenno.ttiu,iAaalllldswwoba,aettieenarrccrssheuuaapplsplpeleildineegsps.eu..mIInnping DaDLidaisdksppietooisotsahanall,t oomwffoappnuuualmgmdippnngeooeuutdtht eww10alaatbtreeegrretiirvnnaocEElkauaegmgdlleeethPPoroofoiitunnrgtethaLLoteauadtkkeetghrwweooouVuunalldlddlwehhyaaavtvBeeerr accwnooocnnuhsselewdqqauubteeeennraccseehcsshedattololteoHHnotogrhreses.eeSssthhooee LCCrarookiiexxthRRiaivtveewrr..ould need to be tracked throughout the Valley Branch watershed to the St.
ShStatuuvddeiieeissndccioocmmatppeldleettteehaddtbbtyyheDDyuudPPooonnntot,t, 3r3MMeadaainlnyddaAAdsPPoMMrbEEtooonnthttheheesoPPiFFl CCmsasotorfifcxcoo(nnDccueePrronnnatattLtthhOeeTLLMaaonnnddfiiftiloll!ring hMaovdeelinidnigcaEtexdpetrhtastmteheetyidnogwniotthreEaPdAil-yOacdtsoobrebrto22t,he20s0o3i,l m3aMtri1x9(7D8uPPRoZntMLOmoIdMeloinnigtoarnindg .22L/aM00n00dof33idleAAll.iPPnMMgAEEEsxossipttluuedbdritoicserssi)m).n.egTTechthioinismsgpcclwhheaaitrtrhaeacdctEtetePrhriAirssot-tOiuiccgchwwtoatabhsseeraafll2soso2ro,mvve2eerr0rii0sffp3iiere.ad3dyMaatit rttIchh9gee7atWW 8iaoPasnRshhaiZirnnMeggattamootnnotdCCheoeoluuiLnnantgntdyyafinldl srsLhhoaoonuwwdnefediddlls.PPuArFFfCCascssoei.hhl aabTddohrppeieencrrgocconoclcloaaemttneetpddrlaettththierrodoonuutghdgehrhottetuhchgeethessdtoohialelt ddafooolwrwmlnneevtrteoolasspadrwedaapeysptithtrhryoipogfifacta22ilo66lnyffeaewerittetabbheeianlltoottwhwheetthsLheeaamnedfill oPgorrrFdodOeeurrnAodof(fs1mmu2araf4gagn1cni0eit.t2uuT2dd.hee3effnocogror/ngPP)cF.FeBBnAtAra((tirroaannnggdeeeffterrocomtmed00.a.88t77a44ll ttlooev22e22l..s99wnnaggs//ggty((pnniaacnnMoolggyrraawmmistshppineerrthllieitetsrea))m) aaenndd
PFOA (1.24 to 22.3 ri!!g).
PPFFCC--RREELLAATTEEDD RREESSPPOONNSSEE AACCTTIIOONNSS TTAAKKEENN TTOO DDAATTEE SaStdtavarirttsiionnrggieiisnn b22o00t00t5l5,e,dtthwheeatMMerPPaCCnAAd oogfrfffaeenrrueelddarrreeassciitddieevnnatttssedtthhcaaattrrrbeeoccneeii(vvGeeAddCMM)DDfiHHlteddrrsriitnnokkiiannsggswwuaraateteerrsafe assmuduuppnvpipislcloyyiropioaefflsddwbrraoiintnttekklrieindn1gg0wwwoaavatteeteerrrr,.2an033d0MMghrppoarrmnooeuvvsliiaddireenddatcfhftueiuvnnaaddrtiiecnnadggacfffaoofrrrebcttothhneeed(CCbGiiyttAyyothofe)ffLciLloatanekktreaesmEEitonllmamatoosisouttnoor.eeeCxxauttsreearnnfeddently, am55n22udrrneeeisscniiidpdaeeadnndltitwsstiawwotineitatrhhltoootuuhtotrvecceeoornnrne2nes0ecic0dtteiihonootnnms ttaoeorsetthihrneeetcmmheueuinvniaiicrnceigiappabaalolftfwwtelacaetttdeeedrrwassbtuuyeppr.ptphlleyTyhchheoaanvvMteeaPmaaCiGGnAAAatcCCioonnfft.iiilltCneeururersssryyetssnotttelemym, sasanamdmppallnee arrdeedssiiidtdieeonnnttaiiaalllthwwreeellellssrerrsooiuudtteiinnnetesllyyaraaennddremcmeaaiivinnitntaagiinnbssottththleeedGGwAAaCC~effrii.llttTeerhrsseiiMnn ttPhhCeessAee chhooomnmetiesns.u. es to TTarooearr,eedtdhuuecceedittshhceehammroogueunnfddoiirnntggheeeffsffpeerccattyiinnirttrhhieegaggtirrooonuunnsddyswwtaeatmteerwr aiinsn ttmhhoeevffeoodrrmmaeebrrogugtrroo2uu5nn0dd--ywwaaratdteesrrfdduiirsstchchehraarrggee assoroeuuatt,hhtwwheeesstdt iiisnnchNNaoorvvgeeemmfboberertrh22e000s06p6.r.ay irrigation system was moved about 250 yards further
5 22778844..00000055
3MMA0A202664455887756
EEVVAALLUUAATTIIOONN OOFF RREEMMEEDDIIEESS
`ATTshhseeeMsMsPPmCCenAAt hhiinirr2eed0d0aa7nn ieennngogirinndeeeererriinngegvccaoolnunsasutulelttpiinongsgsiffibirrlmme tr~ooemcceoodnniddeuuscctttoaaaRRdedermmeeesddsyythFFeeeacasosinibbtiilalimittiyynation aAattsttshheeessLLmaanendfnditflilil.nl. 2TT0hh0ee7rreienmmoeerdddyyerooptpottiieoovnnasslu~ianntcceltuupddoeesdds::ible remedies to address the contamination
no additional action;
plnpLaaolanssdammfdiadalilttti;ooorrnccahhl ((atrcreetiaaottnmm;eenntt aanndd ddeessttrruuccttiioonn ooff wwaassLtee aanndd ccoonnttaammiinnaannttss iinn tthhee
+ puL[fboamrrnccpdeefmmialaalni)id;nn t((rttrraaatnnsstppooorrcttapcctoounnrtteaa,mmriinenamatoteevddeggarrnooudup.nt~rddeawwtaacttoeenrrtaaatmttihhneeatssieittdee gttoroossuaannnidittaawrrayytellrif)ftt;ssttaattiioonn));;
ddiipdiugggm&&&p
tatrrnuudcckktre((eaextxcc(ataovvaacttaiipootnnuraaenn,ddreoofmffIoCsivstieteeaddniidsspp~oorscsaaa~ll coooffnwwtaaasmsttieenaiintnettdhheegrLLoeaunnndddft]iwlll)a);teaarnn);dd line (excavationofwaste in the Landiill and containment in a new
deennigggii&nneeleeirrneeedd(e((llxiincneaedvd))atffiaaoccniilloiittfyywooannstseitien).the Landfill and corttainment in a new
`PTTrhhoeetsseeectaaillottenermAnagatteiinvvecessywwfeoerrreeaseesvveaasllsuuiaanttgeeddcluuessaiinnnuggp ccrrreiimtteeerrdiiiaacaasddaootpptSteeuddpebbryvfuttlr-r~ede UUsi.otSSe.s.,EEin~nvcviliurrdooinnnmmg:eennttaall
Protection Agency for assessing cleanup remedies at Superfurtd sites, including:
+cooomvvpeerlraailllal npprcrooetteewccitttiiohonnaopofpflhhicuuammbalaennohhreeaarlelttlhhevaaannnddt tatthnteedeeannpvvpiirrrooopnnrmmiaeetntettt;:requirements;
loclnoognm-gpt-tleeiarrmnmceeeffwffeeiccthttiivavepennpeelssicssaaabnnledd oppreerrrfefoloerrmvmaaannhtcceae;n;d appropriate reqmrements;
+ rsehrdoeurdtcu-tctiteioromnnoeofffftteoocxxtiiiccivitetyyn,,esmmso;obibliilittyy,, oorr vvoolluummee ttlhtrroouugghh ttrreeaalmimeern~tt;:
+ .
ciismohmspotplr.lete-mmteenertmnatbaeibflifileitctyyt;i;vaaennnddess;
cost,
aEEpaapccrhhoaaalclttheerrinnnaattSiiuvvpeeerwwfaaussndss,ccooirrteehddasaaggraaeiiqnnussittreeedaaccahhlloorffettmhheediccreriistteertrioiaa.m.eWWehtheetnhn MMfiPPrsCCt AAtwioaaas"stuuhsrseeesddhttohhliidss cecarrpxiipttteerrorfiiaaiacv""ehaacinnrndditSeggrueeipnane,eerrrafaanulldnllyydu,tfsriieiteessshpattusooblriieiddqceeunanitcritectyidep!tat:hlhaleenrcrreeeemmmaeeesdddaiyye"sttmhhtooaadttimppfreryooeivvtniitgddheeecssrfittihrehseerti""towbbneeosstt"tbbhaarlleaasnnhccoeel""d ooff tthhee
next five criteria, and uses public acceptance as a "modifying criterion
"eTTvhhaeeluddaiitgioaannnddcallniinnebeeooppftotiiuoonnnd rrieencceeRiievvmeeedddttyhheeFemmsooisbstti--flfaatvvyooArrsaasbbelleses((mlloeonwwtees,stt))Wassscchoorirene.g.tDDoenettaCaioilluss naatbbooyuutLt atthhneedi, efLLevaaaakksleieubaiEEltlliimmotoyno,,acsMaMsnieinnsbnnseemesefsoonotmttaa,~,,dt(h(SiSenEEMRHHPeNNmCooe.A.@AAs--eFMMleeNcNc~PtP,CesiCdAb0iAtti8h0~e08y2~DA.'is20gs.e00&s0)s),m,LeiNN~noocrvv,oeepWmmtbabieoserhnri~a11s5g5,.rtoh22~e0000pC7r7.oe.ufBnBeOraarss,eeedddrooennmetthhdeey because it: feasibility assessment, the MPCA selected the Dig & Line option as the preferred remedy
because it:
+ +
ceoffffffeeecrcsttiivveelllyoynccgoo-ntntetaariimnnssretthmheeedssyoouufrroccreeobofoftchcoonPntFtaaCmmsiniananatdtiiooVnnOCoosvve;err
the
the
long
long
term;
~erm;
+ +
dooffcesrsnoatlotrnagn-stfeerrmporlelmuteadaytsfoor obtohtehrPlFocCatsioannsd; VaOndCs; disoceosstnoetfftercatnisvef,er pollutants to other tocatmns; and
is cost effective.
The MPCA concluded that a pump and treat system s not an appropriate remedy for the TLahnedfMilPCbAecacuosae~:eluded that a pump and treat system is not an appropriate remedy for the
Landfil! because:
6
22778844..00000066
M3MA0A206264455887777
becbdoermdporolccekkteaaqqcuauipiffteeurrrsseoiinnf
th vicinityof tchoenvtiacmiinnitayteodf
the Landfill are extremely twhaeteLrannodtfiflleaasriebleex;tremely
fractured,
fractured,
making,
making
+
acaasonsimdiggnpdniilifesfiticecchaaacnnrattgplleyytudllraeafrorgrogeefancvvoooinllnutudammemteeeinroomaffitggenrdraootwuuennaaddtmewworaunatntoeettrrofwwfeoaotsuiuilmbleddl.ehh; aGaviveve
to etno
be tbhee
pumped, peuxmpepcetde,d
trated trleoantged
atwtenearrtdmmedrnnisaractetuhusrroaeeurgrooceffetdhtahfinoissdr aaahccnattviiioenonndpettothhteiierssnmtwwiionaoulaulltlyeddaabbdmeeveoccrouossnsetttllayoyfffaaetnnicmddtserree.ossnGuulliattvneiiynnnrttthehhceeeellieoovxssipssnegoocftftseuthdhre,felaoggcnrerogowuuanntdder
wboadteyrbreecsoauusrceoe fatnhdehlaavregepowatetnetriavlloyluamdevserisenvaoflfveecdt;s aonndany receiving surface water
pupbmuomdpyipibnneggcattuhhseeeddroriifffttthaaeqquuliaifrfgeerer
wwoautledr
would
vloikluelmy edseiwnavtoelvreeds;idaenndtial
likely dewater residential
wweellllss
iinn
hthee
aarreeaa..
PUBLIC COMMENT
PUBLIC COMMENT
cTTlhheeeanMMuPpPCCopAAtihhoeenllsddassseewvveaerlralaall ppuutbblsliipccrmemfeeezerttriienndggssreiimnnedLLyaa.kkeeAgEEellmnmcooyttoostssahfhfaarrteewiiicnneffooprrrmmeasatetiinootnnedaabbioonufutotrttmhhaeetion
1ctio0lnefiiaonnnrddumiipvavtiidoiduuopanatlilomnCCeiseitttayyisnoowgff eLLfloaalrkkareeseEsEitilsldmmepnoortesccfoeoouruwrnnenccdiiilnlregmmmeperemmodbpbyeee.rrrAtssygiinnenneceacaaryrrlltysyhteaDDfeLfea'cctnweedmmficibbeleelrprwr22ea00ss0e07n7h.t.eelAAdd
ipnufbolrimc ation ipnubJalincuary
2i2Cn0o0f0u0o8n8.rc.miIIlanntffimoooenrremmtmaiatnteiigeootnniwnowwgraakfssosrhpprorreeepsssieeadnnnettdneedtdasttfoooowlLLlnaaoikknwee-guEEppllrmComipooteycrcitiCyttoiizunzeneenncassirlaathnnmeddeeLcctooaiununndncgfciiiillllnmmwmeieammdsbhbJeeaernlrsdusaaarintyt.aaJaCCAniiuttyayry
Cpllaraorergugseenerrnctippluutbmhbleleiiacecgtimmenengeecetywti'innosggrpkwrwseahafosseprhhreaeelnldddd"aaDattifOOgoaalalkkonwdLLa-aLunnipddneCJJ'uuitnnryiieooCmrreoHHduiyinggchfhiolSrSmccphheuoobeoltoililncgiincntonFFmeembmbrireduunaaJr.rayynu22a00r00y88. ttAoo
present the agency's preferred "Dig and Line" remedy for public comment.
w"TTahhsee eppsuutbballbiilcciwswhaaessd iifnnrvvoiitmteedFdettboorccuooamrmymme1en4nttthoornnoutthghehe pMprraeerffceerrhrree1dd5,rre2em0m0ee8dd.yy aaSnneddveanpppuuebbrllsiioccncsc/ooemmnmtmteiencntst ppeerriioodd
swsuuabbsmmieitsttttaeebddliwwsrhriiettdtteefnnroccmoommFmmeenbetrnustsa..ryTThh1ee4ssetehccroooummgmmheenMnttsasrcwwheerr1ee5,mm2oo0sst0tl8lyy.
concemed about Seven persons/entities
concerned about:
+ +
otthhpeeenccioonnngttiinunupueetddheppooLtateennndtftiiiaallllffaoonrrdccoodninsttataummriibnniaanttgeedtdheggrrwooauusnntdde wwmaaattyeerrcrmmeiiaggtrreaatntiienngwg oeofxfffpsosisittueer;es (0 the
+
pp3ouupMbbelnlisicichn;;oguludp
the Landfill and disturbing the waste
bear all costs forthe cleanup; and
may
create
new
exposures
to
the
+ pp3eeMrrmmsaahnnoeeunnldcceebooefaftrthhaeell rrceeommsetedsdyyf.o. r the cleanup; and
`AACossmuummmemmnatarsryycoafontf thbheeefccoooummnmdmeiennntStssumffmrroaomrmytt.hhoeefppPuuubbbllliicicaassCowwmeelmlllearassustthheaenMMdPMPCCPAAC''As rrReeessspppooonnnssseeet,tooMttPhhooCssAee cRRoeemmmemeddeyynStSseelcleacentcibotenifffoooonrruntthdheeinWWaSasushmhiimnnggattrooynnoCCfoPouuunnbttlyyicLLCaanondfdmiflmilll,e,nJJtuusnnaeend118,M, 22P00C00A88..Response, MPCA
SELECTED REMEDY - DIG & LINE
SELECTED REMEDY- DIG & LINE
tAAhffetteeirrnfccooornnsmsiaiddteieroriinnngggattthhheeereeevvdaalltuuhaarttoiiuoognnhootffhrreeeMmmPeeCddyAy'aallstteeerrnnnvaaittiirvvoeenssm,,eccnootmamlmmeiennnvtetssstffirrgoaomtmiotthnhsee,ppiuunbbcllliiuccd,,iaannngdd
mm1th0o,eonniiintptofolorrariismnnmggaatdditaoaottnraacgaahannttddhesesstrppieeendccgiitaafhallrcoisslttuiuugtddyhi,ieetstsh,h,eeaasMsMwwPPeeCCllllAAaa'ssshaffesoonlldvlloeirotwowen--ruummppienmmneetedaeeltttiiihnnnevggDsesiswwtgiigit&tahht,,iLoaainnnnsdde,
aainsscitltueedvviiinssgiitt option
`tppocrro,oomvavpiilpddileeaessssmffwooiarrttoohovvreaecrprhapallltlilecsppatrrbioonlttgeeeccofttraiicoroinenloiltoeyfvf,paptunhutbeblaliMniccdPhhaCeepaAapllrttohhhpaaarsinndaddteewwteeeerlmlqffauairnrieeerdaeannmthddeettthshDeeiageennnd&vvpiirLrrooionnvmmieedeonentpst,t,itohne most
cccooossmtt--peelffiffeeesccttwiivivteeh llaoopnnpggl--ittceearrmbmlerreoemrmereeddlyye..vant and appropriate requirements and provides the most
7
22778844..00000077
M3MA0Az06264455887788
`TThhee DDiigg && LLiinnee rreemmeeddyy wwiillll ccoonnssiissttooff eexxccaavvaattiinngg tthhee LLaanndfdiflilll''ss wwaassttee aanndd ppltaacciinngg iitt iinn aa
new city witha ple nes nd leachate collection aye in the sprint esto new facility with a triple liner.and ieachate collection system in the approximate location oFhe curen land il. Tis process wil aks approximarly 3 yeasty comple. Lance of the current landfill, This process wil! take approximately 3 years to complete. Leachate at accumulates will be rescued ck though the was that accumulates will be recirculated back through the waste. This apion will ffcivly contain he source of PEC and VOC waste and remove it This option wili effectively contain the source of PFC and VOC waste and remove it rom tne groundwater Faihwas 48 esl, bran expos o omumindnt va from the ground-water pathway. As a :'esult, human exposure to contaminants via drinking water source ad the sonimued degradation of he ground we rescues will drinking water sources and the continued degradation of ~he ground water resource will te mitgned be mitigated. he MPCA understands hat ther sa slight chance hat PFC concerns in he The MPCA understa~lds that there is a slig~t chance that PFC concentrations in the grind wats vo tempor isaon when somal omgsution vegies rary doe ground water could temporarily increase when remedy construction begins; primarily due fo shuting down he exiting sround-vate VOC pomp and eat system in order 10 to shutting down the existing ground-water VOC pump and treat system in order to consruet the mow waste GU. 1 Toons he MICA will incall adioral ground water m`cmooonnnsiitttroourrciitnngtghewwe~el_lllesswaawnnddasssteaammcpep!l!lsee~bb[oontthhremmsopononintistooerr,iintn!~gg_e aaMnnddPCrreeAssiiddweeninit!tiiaianllstwwae!el!lllsasdwwdiii~tt:hhioggnrraee!aagtteerorrund water Frequency ith rea. I appears that residential wels might b paced by higher frequency in the area. If it appears that residential wells might be impacted by higher Levels ofPFCs that cx to HLS HBV. th MPCA wil msl GAC flrs on plperrviivveaalstteeowwfePellFllssCsiiffntnhooat~t aaellxrrceeeaaedddyy tpphrreeessHeennRt~.oLs or HBVs, the MPCA will install GAC filters on In conclusion, pursuant ( he Landfill Cleanup Act, Minn. Stat. Secticn 115B.AD, su. In conclusion, pursuant to the Landfill Cleanup Act, Minn. Stat. Secticn 115BA0. subd. Irth Dig & Line ahernative as been detonmined by the MPCA to be Reasonable and 1. the Dig & Line alternative has been determined by the MPCA to be reasonable and peccasary fo prtee the public eskh snd wells and the environment fom eleases and necessary to protect the public heatth and welfare and the env~.romnent from releases and hratened relases of PRs and VOCS to he cnvironment a and fom he Washingion threatened releases of PFCs and VOCs ~o the ei~'~.romnent at rtnd from the Washington
CCoouunnttyy LLaannddfiflilll..
bd Moree BBrraadd M Moooorree
oo
Foear Commissioner
Nonesoa Polion Control Agnes Mitmesota Pollntio~ Control Agency
1808
Date
s
22778844..00000088
awsozesers 3MA02645879