SDM S Documen t I D
UNITE D STATE S ENVIRONMENTA L PROTECTIO N AUhNU Y REGIO N 8 99 9 18 TM STREE T- SUIT E 50 0 DENVER , C O 80202-246 6 203228 3

INITIAL/FINA

L POLLUTIO

N REPOR T INTERNATIONAL SMELTIN GANDREFININGSIT E Pin e Canyon , Uta h

I . HEADING Date : Sit e Name : From : To : POLRE P No. : Internationa l Smelting an d Refinin g Sit e Joshua Knight , RP M Kevi n Mould , EPAHeadquarter s Initia l andFina l

II . BACKGROUN D Sit e No. : Respons e Authority : NP L Status : Actio nMemorandum : Star t Date : ;. - Completio nDate : 6 Y CERCLA Listed , Jul y200 0 Marc h 27 , 200 3 June 4 , 200 3 Jun e 20 , 200 3

III . SIT E INFORMATION A . Inciden t Category Time-Critical , PRP-Lead , Remova l Actio n B . Sit e Descriptio n 1 . Sit e Locatio n Th e Sit e i s locate d adjacen t t o th e Pin e Canyon townshi p an d Tooel e city , Utah , approximatel y3 0 mile s southwes t o f Sal t Lak e City , Utah
. Th e Sit e i s roughl ybounde d b y th e Oquirrh mountain s t o th e east , rura l residentia l an d farmlan d o n th e nort h • an d south , an

d Pin e Canyon an d Tooel e t o th e west . Th e Car r Fork Landfil l Are a i s nea r the eas t sid e o f the Sit e an d i s approximatel y6 acre s i n size
. I t contain s mostl ydebri s fromth e demolitio n phas e o f th e reclamatio n projec t whic h occurre d i n 1986
. The Sit e Entranc e Staine d Soil s Are a i s nea r the wes t sid e o f th e Site , nea r th e poin t entr yfo r sit e visitors
. Th e soil s ar e o f a dark brownis h tint , an d ar e approximatel y4 acre s i n size
.2 . Sit e Characteristic s Coppe r smelting bega n a t th e Sit e i n 1910
. Th e Smelte r had a capacit yo f 4,00 0 ton s o f coppe r or e pe r day
. Two year s later , coppe r or e supplie s decline d an d IS& R buil t a lead smelter
. I n 1915 , Anacond a (no wARC O - th e decline d Atlanti c Richfiel d Company ) purchase d th e IS& R subsidiary
. Ove r severa l year s th e owner s adde d a lead

zin c sulfid e flotatio n mil l and a slag treatmen t plan t fo r lead an

d zinc recovery . Coppe r productio n cease d i n 194 6 whe n th e coppe r smelte r closed
. Lead smelting ceased i n earl y1972
. A n estimate d 650,00 0 ton s pe r yea r o f tailings , slag an d flu e dus t wer e produce d during earl yoperation s a t the IS& R Site
. Th e Sit e wa s reclaime d i n 198 6 unde r a voluntary agreemen t betwee n ARC O an d th e Stat e o f Utah
. Th e reclamation included demolition o f al l building s a t the Site , consolidatio n o f th e wast e material , and a covering o f th e majorit yo f th e wast e material
. The Sit e cover s abou t 1,20 0 acres . Ther e ar e approximatel y33 0 acre s o f tailings , 27. 5 acre s o f metal

contaminate d slag , 1 3 acre s o f settlin g ponds , abou t 5 0 acre s o f landfill s an d 12 5 acre s o f smelting wastes . The remaining acreag e consist s o f ope n area , mostl y unimpacte d b

ysmelte r operations
. Investigation s indicat e th e presenc e o f arsenic , cadmium , copper , lead , mercuryan

d zinc i n the soils , tailing s an d slag
. 3 . Descriptio no f Threa t Lead an d arseni c ar e the primar ycontaminant s o f concern wit hregard t o human healt h a t th e Site
. Lead an d arseni c ar e hazardou s substance s a s define d b yCERCL

A Sectio n 10 1 (14)
. Thes e hazardou s substance s wer e release d int o loca l soil s b yhistori c smelting an d millin g activitie s an

d wer e transported aroun d the area s primaril yb

yconsolidatio n during th e 198 6 reclamatio n (Car r Fork Landfill ) an d b ysurfac e runof f (Sit e Entranc e Stained Soil s Area)
. The exposur e o f thes e metal s pose s a substantia l an

d immediat e ris k t o visitor s an d Sit e worker s withi n the area . The Sit e i s use d extensivel yb y loca l are a resident s (jogging , walking , birdwatching , hunting , etc.)
. Lead an d arseni c i n soil s present s a ris k o f incidenta l ingestion
. Sample s taken fro mthe Car r Fork Landfil l Are a sho wlea d a t 120 0 pp

man d arseni c a t 11 0 ppm . Sample s take n a t th e Sit e Entranc e Staine d Soil s Are a showlead a t 380 0 pp man d arseni c 87 0 ppm . Thes e level s ar e above actio n level s tha t hav e bee n establishe d a t othe r Utah sites
.IV . RESPONS E INFORMATIO N

A . Situatio n 1 . Investigatio n APreliminar

yAssessment/Sit e Investigatio n (PA/SI)wa s complete d i n 198 4 b yth e UtahDepartmen t o f Environmenta l Qualit y(UDEQ) , wit hadditiona l expande d S I work complete d i n 199 5 an d 1996
. I n Jul y2000 , EP Aliste d the IS& R Sit e on the NPL . During th e year s 1986-198 7 Atlanti c Richfiel d performe d an extensive voluntar yreclamation a t the propertyt o contro l potentia l risk s t o healt han d th e environment
. Th e reclamatio n work included : th e remova l o f remaining building s an

d structures ; consolidatio n o f wast e materials ; constructio n o f stor mwate r controls ; and , placemen t o f cove r soi l ove r th e majorit yo f disturbe d area s a t th e Site
. The Remedia l Investigation fo r the Sit e i s currentl y underwa yan d i s schedule d t o b e complete d i n Februar y 2004
. Th e Feasibilit yStud yi s estimate d t o b e complet e i n Jun e 2004
. 2 . Actio ndescriptio n Car r Fork Landfil l Erosio n Contro l Construc t a serie s o f earthen diversion berm s designe d t o redirec t flowo f wate r awa yfro mth e landfill s an d steep canyon slopes
. Entranc e Are a Staine d Soil s Soi l Cove r Plac e a soi l cove r ove r contaminate d area , the n revegetate . Oversigh t Al l wor k wa s conducte d concurren t wit hoversigh t b yEP A and UDE Q and wit hth e Burea u o f Reclamatio n (BOR ) a s th e oversigh t contractor . Completio n Tw o borro wpit s wer e utilize d o n sit e fo r cove r materia l fo r th e Sit e Entranc e an d th e Landfill
. A roa d wa s cu t t o th e borro ware a fromth e existin g roa d a t th e Sit e t o provid e acces s fo r th e trucks
. 25 4 tota l load s o f fil l dir t fromth e borro ware a wer e place d a t th e tw o .areas . Onc e th e wor k wa s completed , th e borro wpi t wa s contoure d an d dril l seeded
. Th e slope s (o f th e borro wpi t wer e a t a 3: 1 slop e whe ncompleted
. Th e dir t roa d leadin g t o th e borro wpi t wa s disce d and seede d and fertilized
. Th e Sit e Entranc e Are a wa s firs t grubbe d and scarifie d wit ha grade r i n th e are a wher e th e cove r wa s t o b e placed
. Th e are a wa s covere d wit h1 2 t o 1 5 inche s o f compacte d fil l material
. The n th e are a wa s disced , dril l seede d wit hnativ e plan t seed s and fertilized
. Th e Landfil l wa s firs t grubbe d an d scarifie d wit ha grade r i n th e are a wher e th e diversio n ber mwa s t o b e placed
. Fiv e 8 " lift s wer e place d o n th e diversio n ber man d afte r eac hlif t wate r wa s applie d an d i t wa s compacte d wit hth e shee p foo t compactor . Ripra p wa s the n place d i n hig herosion-potentia l areas . Awate r pip e tha t wa s expose d b yth e previou s erosio n wa s cu t i n 4-inc hlength s and dispose d of
. Originall yth e pip e wa s t o b e place d i n th e gorg e bu t th e PR P change d th e pla n and th e pip e wa s place d i n a hole , crushe d and covere d wit h1 8 inche s o f soil
. Th e pip e i s burie d approximatel y40 0 fee t sout ho f th e berm
. 3 . Enforcemen t Thi s work wa s conducte d throug h th e us e o f EPACERCLA enforcemen t authority
. ARC O complete d th e work unde r the curren t Administrative Order , wit h submitta l an d approva l o f a work pla n amendment
. 4 . Futur e Flan s Th e Remedia l Branc h i s currentl yconducting a remedia l investigatio n o f th e site , t o b e complete d b yFebruar

y 2004
. COS T INFORMATIO N Th e budge t establishe d fo r thi s Remova l Actio n wa s $45,550 , i f EP Awould ; have ha

d t o take ove r the work
. However , no cost s wer e incurre d becaus e th e PR P complete d th e work
.