Ref : EPR-E R

HEADIN G Date : From : Agency : Unit :
To : POLRE P No
. Site : 

## r

UNITE D STATE S ENVIRONMENTA LPROTECTIO N AGENC Y REGIO N 8 99 9 18 TM STREE T- SUIT E 50 0 DENVER , C O 80202-246 6 http://www.epa.gov/region0 8 

### SDM S Documen t I D 203809 3 INITIA LPOLLUTIO N REPOR T Midval e Sla g NP LSit e (OU1)[Drums ] Midvale , Sal tLak e County , Uta h
Octobe r10 , 200 1 Tie n Nguye n EP A Regio n VII I - EmergencyRespons e Progra m 99 9 18t h Street , Suit e 30 0 Denve rColorad o 8020 2 (303)312-682 0 PattyKalla , EP AHeadquarters Initia l Midval e Sla g (OU1 ) [Drums ] Sit e II
. BACKGROUN D Sit e Number : PartyConductin g th e Action : Respons e Authority : NP LStatus : Actio n Memorandu m Status : Dat e Actio n Started : Completio n Date : 

### 087 1 EP A CERCLA 

### ye s Approve d -10/01/0 1 10/02/0 1 TB D SIT E INFORMATIO N A
. Inciden tCategory Time-Critical , Fund-Lead , NP L B
. Sit e Descriptio n 

### 1 . Sit e descriptio n Th e Sit e i s locate d i n Midvale , Utah , approximatel y1 2 mile s sout h o fSal tLak e City
. Th e entir e Midval e Sla g Superfun d Sit e encompasse s approximatel y43 0 acre s o f undevelope d an d residentia l land
. Asmelte roperate d o n th e sit e fro m 189 7 unti l 1958
. Lead , arsenic , an d cadmiu m contaminatio n resulte d fro m th e slag , calcines , stac k emissions , an d baghous e dus tfro m th e coppe ran d lea d smeltin g operation
. Ove rth e years , i t change d fro m a coppe rt o a lea d smeltin g facility , producin g gold/lead/silve r bullio n fro m sulfid e ores . A n arsenic-recoveryplan twa s als o par to fth e smeltin g proces s whic h produce d sla g an d calcine s a s wastes . 

# O Printed on Recycled PaperTh e Sit e wa s divide d int o tw o Operabl e Unit s (OU)
. Th e OU 1 consist s o fth e norther n portio n o fth e Sit e - nort h o fth e sla g pile s an d includin g a mobil e hom e park
. Th e OU 2 consist s o fth e sla g pile s an d smelte rcomple xarea . Th e drums , whic h ar e discusse d i n thi s POLREP , are locate d i n th e souther n portio n o fOU1
. 2
. Sit e evaluatio n Th e Uta h Departmen to fEnvironmenta l Qualit y(UDEQ ) complete d wor k a tOU 1 severa l year s ag o an d a Remedia l Actio n Repor tha s bee n signed
. Currentl yremedia l investigation s an d feasibilit ystudie s ar e occurrin g a tOU 2 unde rth e directio n o fRegio n VII I EP ASuperfun d Remedia l (EPR-SR ) RPM
. A s a par to fth e dat a completio n fo rth e wor k a tOU2 , additiona l samplin g well s wer e complete d o n OU 1 t o updat e informatio n regardin g the'groun d wate rplume
. Whil e samplin g th e wells , EPR-S R foun d approximatel y9 0 deteriorate d drum s o fwel l cutting s an d PPE , an d thre e deco n pads/pit s containin g plasti ccontainer s an d plasti cliners
. I ti s believe d tha tth e drum s an d waste s wer e adversel ylefta tth e Sit e sinc e Jul y199 1 a s a resul to fSit e Remedia l Investigatio n an d FeasibilityStud y(RI/FS ) performe d b yUR S Consultants
. Asit e fil e revie w(Sit e Characterizatio n Reportfo rMidval e Sla g Superfun d Sit e (OU1) , date d Jun e 30,1992 ) reveal s tha ti n Jun e an d Jul y1991 , twent yseve n borehole s wer e drille d a s shallo w monitorin g well s a tOU1
. Th e dril l cutting s an d PP E generate d durin g thi s operatio n wer e drumme d an d store d o n th e Site
. Th e soi l sampl e result s a tOU 1 indicat e tha tth e nativ e soil , contaminate d wit h lead , exceed s 50 0 part s pe rmillio n (ppm) ; arseni cexceeds 7 0 ppm ; an d cadmiu m exceed s 1 2 ppm . Mos to fth e drumme d material s wer e nativ e soi l fro m dril l cuttings
. Man yo fthes e drum s wer e badl ydeteriorated
. Sinc e UDE Q di d no thav e th e capabilit yo rfund s t o clea n u p thi s contamination , EPR-S R requeste d assistanc e fro m th e Regio n 8 EmergencyRespons e Uni t(EPR-ER ) i n conductin g thi s cleanup
. 3
. Descriptio n o fthrea t Lead , arsenic , an d cadmiu m hav e bee n identifie d a tth e Sit e a s th e contaminant s o f concern . Thes e ar e hazardou s substances , a s define d b ySectio n 104(14 ) o fCERCLA
. Th e directthrea tfro m deterioratio n o fth e drum s whic h containe d dril l cutting s an d PP E i s contaminant s ma yb e migratin g vi a surfac e wate ran d air
. Contaminate d wind-blow n soi l coul d b e transporte d fro m th e Sit e int o nearb ydown-gradien tyard s an d home s an d int o surfac e water . Th e Sit e i s locate d nea ra residentia l are a (Wincheste rEstates ) t o th e north , an d th e populatio n withi n a mil e o fth e Sit e i s estimate d a tove r22,381
. Th e Sit e wher e th e drum s locate d i s alon g th e bank s o fth e Jorda n River
. IV . RESPONS E INFORMATIO N A . Situatio n 1
. Remova l action s O n 10/02/0 1 EPA' s ERR S Contracto ran d it s sub-contracto rmobilize d t o th e Sit e t o start th e Sit e stabilization , repackaging , an d stagin g o fth e deteriorate d drum s an d th e remova l o fdeco n pad s liners
. Activitie s included :

•ERR S personne l cleare d constructio n debri s t o ge t acces s fro m a n existin g roa d t o th e drum s stagin g are a locate d nea rth e ban k o fJorda n River
. Approximatel y 6 8 drum s o fdril l cutting s wer e transferre d t o th e acces s road
. Drum s wer e opene d fo rvisua l inspection
. Dril l cutting s fro m th e drum s wer e transferre d int o tw o 20-yar d roll-offs
. Eac h dru m afte rbein g emptie d wa s inspecte d fo rleftove rresidue s befor e bein g crushe d an d place d int o a thir d 20-yar d roll-off . O n Octobe r4 , ERRS' s sub-contracto r(PS C Phili p Services ) personne l collecte d composit e sampl e o fdril l cutting s fo ranalysi s fo rwast e profile .
•At th e Nort h sid e o fth e 720 0 Sout h street , thre e deco n pads/pit s wit h liner s an d approximatel y1 5 drum s o fPP E wer e removed . PP E material s wer e take n ou t o f th e drums . Pa d liner s an d PP E material s wer e place d int o a 30-yar d roll-offstage d onsite . Emptydrum s wer e crushe d an d a 500-gallo n polyethylen e tan k foun d i n on e o fth e deco n pi t wa s cu t int o piece s befor e bein g place d i n th e roll-of ffo r disposal . Th e deco n pit s wer e levele d wit h dirt a t th e sam e leve l a s th e surroundin g area .
•Durin g th e remova l o f1 5 PP E drums , on e dru m ful l o foil yliqui d wa s discovered . Th e dru m probabl ydi d no t belon g t o th e grou p o fPP E drums , bu t wa s mor e likel y a resul t o fillega l dumpin g alon g wit h othe rdebri s see n o n Site . Th e OS C informe d th e RP M o fth e discoveryo fthi s drum , an d ha d EPA' s subcontracto r (PSC)hazcat/sampl e th e conten t o fthi s dru m fo rappropriat e disposal . 2 . Enforcemen t Enforcemen t procedure s fo rth e tota l Mi d val e Sla g NP L Sit e resulte d i n negotiate d settlements , an d monie s fro m thes e settlement s wer e place d i n a site-specifi c accoun t (Midval e Sla g Specia l Account) . Detail s ar e containe d i n th e Administrativ e Recor d Fil e a t th e Superfun d Record s Cente rfo rRegio n VII I EPA , 99 9 18t h Street , Denver , Colorad o 80202 . 3 . Stat e an d Loca l Rol e UDE Q wa s involve d i n th e initia l evaluatio n o fth e Midval e Sla g sit e an d recommende d tha t th e Sit e b e include d o n th e NPL . Th e Stat e o fUta h an d loca l authoritie s hav e provide d backgroun d data , support , an d communit yassistanc e throughou t previou s activitie s o n th e Site , an d UDE Q ha s recentl yconducte d remediatio n activitie s a t th e Sit e (OU1 ) unde rth e directio n o fEPR-SR . B . Future Plan s Atota l o ffou rroll-off s ar e covere d an d secure d wit h tarps , an d th e oil ydrum s ar e stage d onsit e awaitin g analytica l results , wast e profiles , an d disposa l approva l a t a n appropriat e disposa l facility . C . KeyIssue s Non e a t thi s time . V . COS TINFORMATIO N Cos tt o complet e thi s Remova l Actio n wil l b e take n fro m th e Midval e Sla g Specia l Accoun t establishe d wit h th e monie s fro m negotiate d settlement s wit h Responsibl e Partie s a t th e Midval e Sla g NP L Site . Tota l cost s hav e no t bee n receive d a t thi s tim e bu t appea rr o b e les s tha n th e budge t ceilin g o f$50,00 0 whic h wa s establishe d i n th e Actio n Memorandum . VI . DISPOSITIO N O F WAST E TB D

# POLREPFILEGENERATIO N

(T O B ESUBMITTED B YOS C WITHINITIALPOLREP ) SiteName : SSI D NO . '03"/V CAS EN ^ Polrep s Dist . Lis t 1 . ProgramDir. , Dou g Skie , T . Leaders : Ji mKnoy , SteveHawthorn , LukeChavez (rotating ) 2 . RA , DRA , ARAship s 3 . ERD - Headquarter s ATTN : Director (5202G ) 4 . Regio nRespons eTeamMember s (vi afax- 2 9 members ) 5 . Other

FaxNumbers : 6 . 8O C ATTN : Ric hLathro p 7 . LegalDepart

(ENF ) ATTN : 8 . 

## OSC :
10 . Adm . Record s Coordinato r 11 . StateProgram Director/Manage r Addres s 12 . Nationa lPollutio nFun dCenter : Yo r N 13 . OTHER : 

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