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Shelong¢sc cleanup=.~.. ~~a,~.,e s;e<~y~e~_-.. __. _
<br />THE POLLUTION THAT LIES BENEATH
<br />ockets of chemical-laden water percolate beneath the metro area. ` 131ane
<br />These 20 lumen of ollution are the le ac of decades of industrial xugo
<br />P P g Y ~' ~ 1 ii .<<lc~_,
<br />MapleC~rw~ (EastSe_ttrrl ap°~
<br />waste disposal by private companies and government. Some com- ~ of#tle: ,~r,i~~ .~.,
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<br />munities now use special filtration for every drop of drinking water. .
<br />/ Pr. ~klynParj_ North OaF-ti
<br />~_ White
<br />""` Fndley - ~ Ards n . ° ~ R~~~r
<br />~LtIZdA PLf1ME ~~694,' Hills T~ . Grant
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<br />Location: Edina, Hopkins, HOW THE PLUMES
<br />~" Stllhvater
<br />St. Louis Park WERE IDE11Tl'IFIED ~ ~*. '~
<br />Pollutant; Vinyl chloride. The maps reproduced inthis f'lyrrjouth • ^ m
<br />Deseription:Edinashutdownacty reportwerecreatedforregulatory ,{ '~ ','1-New. ~ `~ r `~ ~ `~ ~Ce ti ,
<br />well in 2003 after the chemical was or public healthpurposes by eng- ~" j . w. ~ 1 ~ ~+ I .; <• . '
<br />~,
<br />detected. Plume covers an 8.8-square- neers wha inferredbroad areas of ~ ~ ~ .,~xt i ~
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<br />mile-area; part of it is under a former poterdial pQlhttion usingweAtest ~ ~ ~ t ~ ~ , ~ ~ ~
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<br />wood-treatment safe ~ 2 ; howeverthe data 1yiot every point between two ~.., f t Rt:~ ~/r(~~ . ~. , . , ~ ~ ~ s ~ ~ a~ ~.~ ~~ ~: ' ~Y r ~ ' ~ ~ '
<br />O
<br />source of vm chlonde is unlmown. ledweAs is mn- ~ t ~ ~ .- ~ ~. st Paul , _ -,~ .. ~„ rp. -
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<br />terninated. Therefore, It cart~t~ie as- g ~ ~i, , aL t ~ ~ ~' \r/ ~ ~ ~`~ - _.. e r= ~- ~v.
<br />R)~ILL'i' ~'AR sumedthateveryprope#ty~within . 1rRinnQm~a . , - ~, Syy _ j ,~ )~ s, ~ ;
<br />~ C HE M T C Al. zr L U N['~ a fume has llution '°';, a : ~ a -
<br />Location: St. Lofizis P.ark, Hopkins beneath ft. When sta#e agencies ''~ } : ,• _ ~ Minne hs ~~ r ~ r '~~ ,~ w\ ~ }~'T
<br />Pollutants: PAHs test private and municipal wells, `~ ~ 41h ~ ~ t = t~ ~ ` ~ +
<br />~ .~ r~
<br />,ia
<br />Description: Chemicals from a wood ownezs are notified of the results; ' ' ~ `"r"- ~` '~ j}- ~ '~ o k
<br />preservative plant (1917-1972) have The Starllibune examined. :~ ,~ Edna ;~ "' ,~,, ~; ~ ~' ~ '"+ 1,fton .~
<br />required cazbonfiltration since 1986 mapsandather public temrds, an- J ~ T J `~ - asa ~, ~-~ ~; :. ";,
<br />at two: affected ci wells: Plume is ed a Su database and # ~ ' _
<br />ty ~ lid ; &aen ' ; '~ ! ~ '~ ~ ~ ± ti
<br />~.stable.Siteisnowapark. ~ interviewedregulators,engineers, Prairie ~: ~.~ - ,\~~ ~ ~ ~ r ~~~~~~>- ~S .
<br />publichealthoatudwater ! ' ~ ~ ~ ~~; j fi ` Herghts - ~ ~ ~~ 7#
<br />~ $loomington ~ .~ .tr
<br />SfJUTFI a~iz~raz;aPCaz.z~ supplyrnanagerstoidenti#yz0 ;i f• ~ 3' °~ ~ ~u~a
<br />-= .#k&SENIC BITE areasp£significantgrounduvaten ~~ ~` Eagan ~ ~. •''" -' ....:J~ ~ -
<br />Location•Minnea lis wntamutationintheseven-coon
<br />Pollutant• Arseru ~ metro r 'on. The lrst includes ` .~ Key for plume 12, ~' .~-.~ ~~ .,. ~ ' ~` ~"~ ~ }
<br />• ty egr Concentrations of TCE: ~ y ~; ay ,,~ 1:' ~ '
<br />Description: Former pesticide op- large areas of mrrtaminatian and ~ ~ , ' I{gsemotutt ~ ~d ~~~;~ ~ VdIS:
<br />erations (1938-1968) left azsenic in a smaller ones with notable risks. ~ to 5 parts per billion t , , r~ ~ .,,~+ ~+ ,
<br />23-acre azea of groundwater. Soil was Some plumes are excluded, ~ A~ovc 5 parts per billion - ~ t ~,
<br />contaminatedoverabroaderarea. especially if pollution remains ; , (drinkirlgwateTStandard) ; x ~ ~ +~
<br />.- , ~ -
<br />on site. Not all areas ofchemical - - - ~ `
<br />S 1i q R E 1tA 1~'z Y ~ zi l) - contamination hadmaps or suf- `~` Key for plumes 14,15 and 16, Lakeville
<br />W..E S T P L Z3 !»[ E fi4ent data for' inclusion. Concer-tratiox~s of PFBA:
<br />Location:Minneapolis Otherinformation,including (-~ Belowipartperbillion '~ ,
<br />;~
<br />Pollutant: PCP ` affected aquifers and data sources, E
<br />• ~ At or above 1 part per billion ~ ~ 5 Mn.FS .
<br />Desuaphort: Vilaod tie treatment (1915- appeals with aninteraGtive map at (dnnlang water guidance) f fiafmington < ..,....,,,.,,.,,.~~ ~~
<br />1972) at Soo Line railyard rnntaminat- StaflYibune.com/gruundwater. 5 ... x« - ... _ ~ .. '
<br />ed grourtdwaterover a 100-block area. -- -"•'~` . ~ '~- . ~ < } ,
<br />RIIII tiTEVE CLAYTON • StarTnbw~e
<br />S]FI4RB~IAM 1tAlt1) ---.
<br />T.,uAatfiu~milVtannPapnlis Descriution:Groundwaterneazclosed Description: Contamulatic~nfroma 3M E1AIiDALE ~t3lMP REFIJ.A1E,ItY/PCP PLUME
<br />Pollutants: VOCs landfill is constantly extracted so the durrip on Hwy 96 (1920s-174) has ~ B I.U ME - Location: St. Paul Pazk.
<br />` Description: Degreasers and solvents small pollution plume won't grow migrated under GilfillanLake in North Location: Oakdale and nearby areas Pollutants: PCP, petroleum .
<br />from roundhouse and former chemi- Oaks, affecting some residents' wells. Pollutants: PFCs, VOCs Description: Small plume neaz Mis-
<br />caldistribution center created this poi- , A RM X ~: M rztT z T I O N I Description: Waste dump used by sissippi River from a former wood
<br />lotion plume. "'~ P L A N 3` P LBI M E zi #rX T O W N ';; Elie zd Fa zi z P 3M (1956-1960) is one of three sources treating business and a refinery now
<br />Location: Arden Hills, New Brighton, - TCE 1F L [I I~ E of PFCs in vicinity. Chemicals have owned by Marathon Oil Co.
<br />z<zt d I} z~ E ~' 0 B U N A N C E Columbia Heights, Fridley, Mounds Location: Bayport, Baytown and West spread to the south.
<br />PL11.AdT PL.t1z~SEB View,St.Anthony,Minneapolis Lakelandtownships,LakeElmo .' PzNI" BEND LANO>EZLL
<br />Location: Fridley Pollutant: TCE Pollutant: TCE °'~ C €~ U N T 5€ i~ A N ~ ~ z L L • ~ ' Location: Inver Grove Heights
<br />Pollutant: TCE Description: Two suburbs must filter: Description: Solvents from anequip- "'y'' P z.zr M E Pollutants: VOCs ,
<br />Description: Two stable chemical water from this 8-square-mile plume ment maker (1940-1966) affected Location: Lake Elmo and nearby areas Description: Small, stable plume in shal- .
<br />plumes at a Navy munitions plant on containing solvents from a former groundwater under 7 square miles; Pollutants: PFCs, VOCs low groundwater neazMississippi River.
<br />the Mississippi River nolongerthreat- munitions plant in Arden Hills (1941- 160 home wells require filters. Description: Closed public landfill
<br />en the Minneapolis water supply.. 1975). (1969-1975)acceptedwastesfrom s, ; F"z,zl?d'~ z-zzL1.S REk'zNERX
<br />LAZf¢;ELANU i manysources,including3M;affects FLtBMI:
<br />~~ z.AZNB B£tk~r~tz2t~,~°z`E,zt 4VOgD TBZiA'zaz~zBNT z'LUr~zE ltOUNDt'd.~,T~ z>zxzs~z~s groundwater to south and east. LocationaRosemount
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<br />Pz,tz;~S Location: New Brighton Location: Lakeland, Lakeland Shores, Pollutants: BTEX
<br />Location: Blaine Pollutants: PCP, other chemicals Afton '; 3 rz '~,d' c3 0 zi z3 U IR Y DUMP Description: Plume of pollution from
<br />Pollutant: DCA Description: Shallow groundwater Pollutants: VOCs, BTEX ~ ~ PLiF M E refinery extends 1.5 miles to Mis-
<br />Description:Industrial chemical from near the closed MacGillis & Gibbs Description: Chemicals in about~ 100. Location: Woodbury and nearby areas sissippi River; 4.1 million gallons of
<br />an unknown source affects ground- plant is extracted and treated to re- private wells prompted construction Pollutants: PFCs, VOCs wastes removed so faz. ,
<br />water beneath 1% square miles. City move wood-preserving chemicals. of a municipal water supply;, in 1991. Description; Large areas of PFC-con-
<br />treatswater from affected wells. Two groundwater plumes ale believed taminated groundwater lie south and F`A R M T N G TO N PLUM E
<br />Ii Y. 9 f j stable, with chemical levels dropping. west of this 3M dump (1960-1966) ~=~` Location: Farmington
<br />Ii;B,S?` ~CTEIEL NOR2TF1 OAKS PLUME Note: Shaded area shows where wellrestric- Note: ThePFBAcontaminationisalsobeneath POllutarit:PCE:
<br />LANDFILL PT~U M ~ Location: North Oaks, White Beaz tions apply; chemical plume not mapped. :, Afton, Cottage Grove, Denmark Township, Grey Description: Narrow plume of
<br />CloudlslandTownship,.Hastings,~andfall, roundwatertaintedwith
<br />Location: East Bethel Township g ~Y
<br />Pollutants: VOCs, other chemicals Pollutant: Vinyl chloride Maplewood, Newport, St. Paul Park and South cleaner chemicalsmigrating towazd
<br />st. Paul.- Vermillion River, a trout stream.
<br />CHEMICALS IN THE WATER KEY: (C) CARCINOGEN; (PC) Poss16LE CARCINOGEN AT STARTRIBUNE.COM/GR©UNDWATER
<br />Arsenic: Semi-metal element from bons; chemicals found in coal taz, distinctive odor used inthinners, ad- • An interactive map with magnified
<br />natural deposits, agricultural practices, crude oil, creosote (PC). hesives (PC): ~ views of groundwater plumes, plus
<br />industrial uses (PC). PCE: Colorless liquid used in dry clean- TCE: Trichloroethylene, a liquid grease
<br />Benzene: Colorless liquid widely used ing. Also known as perchloroethylene. remover or solvent. information about chemicals, the history
<br />in making other compounds (C) . PCP: Organic solid once used as'a wood Vinyl chloride :Colorless gas often of the pohlutlon and cleanup eff ortS.
<br />BTEX: Stands for benzene, toluene, preservative (PC). formed when certain chemicals break
<br />ethylbenzene and xylene; found in PFCs: Perfluorinated chemicals, includ- down (C). ~ • A blog inVlting readers to comment on
<br />petroleum. ing PFOA, PFOS and PFBA, formerly VOCs: Volatile organic compounds; in-
<br />1,1-DCA:oily liquid used to make such used in 3M coatings and stain-resin- dudes solvents and oth~r chemicals. groundwater 1$S11eS, health. concerns and
<br />things as finish removers (PC). tant products. Xylenes: Solvents and thiru:;ers. the series.
<br />1,2-DCA: Oily liquid used in plastics, TCA: Trichloroethane is a solvent used ~` : ~
<br />rubber, resins, fumigants (PC). in spot cleaners, other products. source: EPn, cDC • A gallery of photos from this story
<br />PAHs: Polycyclic azomatic hydrocaz- Toluene: Clear, colorless liquid with a
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