Ref : EPR-E R 

### UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y REGIO N 8 , 99 9 18 TM STREET- SUIT E 50 0 

### DENVER , c o 80202-2466 SDM S Documen t I D http://www.epa.gov/region0 8 IIIHIHIIIIIIHIIIIWIIIIIIHIIIIIIII I 

### 203809 4
FINA L POLLUTIO N REPOR T Midval e Sla g NP L Sit e (OU1)[Drums ] Midvale , Sal t Lake County , Uta h HEADIN G Date : From : Agency : Unit :


### To : POLRE P No
. Site : Octobe r23 , 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 Patt yKalla , EP AHeadquarters # 2 an d Fina l Midval e Sla g (OU1 ) [Drums ] Sit e
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 EPA CERCL A 

### ye s Approved - 10/01/0 1 10/02/0 1 

### 10/19/0 1 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 tLake City . Se e POLRE P # 1 Fo rAdditiona l Information . Th 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 f th 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 , ar e locate d i n th e souther n portio n o fOU1
.

Printed on Recycled

Paper2
. 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 parto 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 th e 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 ccontainers 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 f Sit e Remedia l Investigatio n an d FeasibilityStud y(RI/FS ) performe d b yUR S Consultants
. Th e soi l sampl e result s a tOU 1 indicate d tha tth e nativ e soi l contaminate d wit h lea d (50 0 ppm) , arseni c(7 0 ppm ) an d cadmiu m (1 2 ppm)
. Man yo fthes e drum s wer e badl ydeteriorated
. Since UDE Q di d nothave th e capabilit yo rfund s to 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 fconcern . Thes e ar e hazardou s substances , a s define d b ySectio n 104(14 ) o fCERCLA
. Th e directthrea t fro m deterioratio n o fth e drum s whic h containe d dril l cutting s an d PP E i s contaminant s mayb 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 r a 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 Se e POLRE P # 1 Fo rRemova l Action s T o Dat e (10/5/01) .
•O n Octobe r9 , 2001 , ERRS' s subcontracto rpersonne l haz-catte d th e content s o f th e unknow n oil ydrum ; result s indicate d tha t i tcontaine d flammabl e liqui d mixe d wit h solvent s an d water .
•Sampl e result s fro m th e drum s wit h wel l cutting s wer e i n lin e wit h th e level s o f lead , arseni c an d cadmiu m i n nativ e soi l a s previousl yreported .
•Manifest s fo rwast e profile s wer e prepare d b yPSC , ERR S sub-contractor . O n Octobe r17 , PS C receive d approva l fro m disposa l facilitie s fo rdispositio n o f waste . O n Octobe r18 , fou rroll-off s containin g wel l cutting s an d PPE/liner s wer e transporte d t o ECD C Environmenta l facilit yi n Eas t Carbon , UT ; th e oil yliqui d dru m wa s shippe d t o Burlingto n Environmenta l facilit yi n Kent , Washingto n fo r disposal . 2
. Enforcemen t Enforcemen tprocedure s fo rth e tota l Midval e Sla g NP LSit 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 caccoun 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 tth 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 tth e Site b e include d o n th e NPL
. Th e Stat e ofUta h an d loca l authoritie s have provide d backgroun d data , support , an d communityassistanc e throughou tpreviou s activitie s o n th e Site , an d UDE Q ha s recentl yconducte d remediatio n activitie s a tth 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 ta n appropriat e disposa l facility
. C
. Ke yIssue s Non e atthi 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 testablishe d wit h th e monie s fro m negotiate d settlement s wit h Responsibl e Partie s a tth e Midval e Sla g NP LSite
. Tota l cost s hav e no t bee n receive d atthi s tim e bu tappea rro b e les s tha n th e budge tceilin 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 Wel l cutting s an d PPE/liner s wer e dispose d o fa tECD C Environmenta l facilit yi n Eas tCarbon , UT . Th e oil yliqui d dru m wa s incinerate d a tBurlingto n Environmenta l facilit yi n Kent , Washington .