1096068-R8SDM S

Preliminar y Clos e Ou tRepor t Internationa l Smeltin g an d Refinin g Sit e

Tooel e County , Uta h 

### I
. INTRODUCTIO N Thi s Preliminar y Clos e Ou t Repor t document s tha t

th e U.S
. Environmenta l Protectio n Agenc y (EPA ) complete dconstructio n activitie s a t th e Internationa l Smeltin g an dRefinin g sit e locate di n Tooel e County , Uta hi n accordanc e wit hClos e Ou t Procedure s fo r

Nationa l Prioritie s Lis t Site s (OSWE RDirectiv e 9320.2-09A-P)
. EP A an dth e Uta hDepartmen t o f Environmenta l Qualit y (UDEQ ) conducte dth e pre-fina l inspectio n o n thi s sit e o n Jun e 1 , 2007 , an ddetermine d tha t th e potentiall y responsibl e part y (PRP ) ha s constructe dth e remed y i n accordanc e wit hEP A accepte ddesig n plan s an dspecifications , an dn o furthe r remed y constructio n respons e i s anticipated
. Th e PRP , Atlanti c Richfiel dCompan y ha s initiate dth e activitie s necessar y t o achiev e performanc e standard s a t sit e completion
. 

### II . SUMMAR Y O F SIT E CONDITION S Backgroun d Th e Internationa l Smeltin g & Refinin g Superfun dsit e i s locate do nth e wester n slop e o f th e Oquirr hMountain s approximatel y 3 mile s eas t o f Tooele , Utah , adjacen t

t o th e communit y o f Pin e Canyo n (Lincol n Township ) i n Tooel e County
. Pin e Canyo n i s locate do n th e wester n edg e o f th e Site , comprise s approximatel y 2 squar e mile s an dinclude s approximatel y 10 0 residentia l properties
. Approximatel y 20 0 peopl e liv e i n th e impacte dare ao f Pin e Canyon , includin g nearl y 2 0 childre n unde r

th e ag e o f

14
. Fro m191 0 unti l 1972 , th e sit e wa s use dfo r processin g lead , coppe r

an dzin c ores . Smelte r activitie s resulte di n th e generatio n an dreleas e o f larg e amount s o f

wast e material s containin g heav y metals , includin g lea dan darsenic , a t th e site , includin g i n th e Pin e Canyo n communit y are aan dalon g th e Tooel e Valle y Railroa d(TVRR ) grade
. Waste s fro msmeltin g an d refinin g operations , includin g tailing s piles , slag , settlin g ponds , land-fille dmateria l an d additiona l smelte r

wastes , ar e presen t

o n portion s o f

th e site
. I n 1994 , Atlanti c Richfield , th e curren t owne r o f th e site , grante dth e Stat e aconservatio n easemen t a t th e site
. Sinc e then , th e Uta hDivisio n o f Wildlif e Resource s ha s manage dth e conservatio n area , o r

smelte r property , portio n o f

th e sit e fo r

th e purpose s o f

wildlif e habita t

an d preservatio nthroug hth e conservatio n easement
. EP A propose dth e sit e t o th e Nationa l Priorit y Lis t (NPL ) o nApri l 23 , 199 9 (6 4 F R 19968) , an dadde di t

t o th e fina l lis t

o nJul y 27
. 200 0 (6 5 F R40696)
.Th e sit e ha s onl y on e Operabl e Uni t an dca n b e describe da s includin g thre e areas : 1 ) Th e forme r

smelte r property , als o know n a s th e Pin e Canyo n Conservatio n Area , whic hi s owne db y Atlanti c Richfield , an dwhic hconstitute s th e majo r portio n o f th e site ; 2 ) Portion s o f

th e forme r

TVR Rgrade , whic hextend s fro mth e conservatio n are at o th e tow n o f

Tooele , Utah ; an d 3 ) Pin e Canyon , whic hi s adjacen t t o th e conservatio n area . Thi s residentia l are ai s locall y referre dt o a s Lincol n Townshi p o r Pin e Canyon
. Th e primar y decommissionin g o f th e smelte r

facilitie s a t

th e sit e wa s complete di n th e 1970's
. I n 198 6 substantia l reclamatio n wor k occurre dwhic hinclude ddemolitio n o f th e remainin g building s a t

th e site , consolidatio n o f wast e int o 2 landfill s tha t wer e the n close dan d cappe dwit hsoi l an dreclamatio n o f th e tailing s pil e an dsla g pil e b y grading , constructio n o f erosio n controls , cappin g an dseeding
. Remova l Action s 200 6 Conservatio n Are aRemova l Actio n Durin g th e remedia l investigatio n (RI) , 1 8 location s o f varyin g siz e wer e identifie di n th e conservatio n are atha t

exceede dth e cleanu p level s o f 8,00 0 mg/k g lea dan d90 0 mg/k g arsenic
. Thes e cleanu p level s wer e chose n base do n CERCL A ris k assessmen t

methodolog y considerin g bioavailabilit y o f

th e contaminan t

for man dexposur e scenario s fo r curren t an dfutur e anticipate d lan duse , suc ha s conservatio n are amaintenanc e worke r o r occasiona l recreatio n hunter
. Durin g th e remova l actio n thes e location s wer e addresse db y placin g a12-inc hthic k ca p o f clea n soi l ove r th e sourc e materia l an dthe n re-vegetatin g th e surface
. A t tw o additiona l locations , fencin g alon g th e roa dan dothe r

physica l barrier s wer e constructe dt o limi t acces s t o th e locations
. Thi s remova l actio n als o addresse dothe r area s identifie ddurin g th e R I wher e th e surfac e soil s wer e staine dan dvegetatio n wa s limite do r absent
. Althoug hlea dan darseni c concentration s wer e belo w cleanu p levels , Atlanti c Richfiel dremove dth e to p 2 4 inche s o f soil , backfille dwit hclea n soil , an dre-vegetate dthes e areas . I n addition , som e stor mwate r control s wer e modifie dan drepaired
. Ol dfoundation s an dvault s tha t ha dsubside dsinc e earlie r reclamatio n wor k

wer e backfille dan dcovere dwit hclea n soi l an dre-vegetated
. 200 4 - 200 5 Lincol n Township/Pin e Canyo n Residentia l Soi l Remova l Actio n Studie s conducte da s par t o f th e R I foun dtha t

som e o f th e propertie s locate di n th e Pin e Canyo n communit y ha dbee n impacte db y smelter-relate dcontaminants
. Du e t o th e hig hlea d level s i n abloo dtes t

o n achil di n Lincol n an dth e risk s identifie db y th e Baselin e Huma n Healt h Ris k Assessment , i t

wa s determine dtha t

aremova l actio n wa s necessar y t o reduc e loca l residents ' exposur e t o lea dan darseni c i n th e Pin e Canyo n community
. Th e remova l actio n include dexcavatio n o f u p t o 1 8 inche s o f

soi l o n propertie s wher e lea dan darseni c concentration s exceede dcleanu p levels
. Durin g th e evaluatio n o f th e natur e an dexten t

o f contamination , lea dan darseni c (contaminant s o f concern ) wer e foun di nsurfac e deposition s an dno t

a t depth
. A n excavatio ndept ho f 1 8 inche s wa s chose nt o remov e th e contaminate dmaterial s an dthi s excavatio ndept hrequire s n o additiona l respons e action
. Seventy-si x lot s wer e sample dan dexcavatio nwa s complete do n1 9 propertie s an dinclude d 9,10 0 cubi c yard s o f

materia l remove dan dtransporte dt o th e tailing s repositor y o n th e smelte r property
. Afte r

excavation , eac hpropert y wa s backfille dan dlandscape do r restore dsimila r

t o th e pre-constructio n condition
. 200 5 Tooel e Valle y Railroa d Grad e Remova l Actio n Th e remova l actio n require dexcavatio no f u p t o 1 8 inche s o f

soi l i n th e tow nan dschoo l sections , wher e lea dan darseni c concentration s exceede dclean-u p levels
. Remova l o f u p t o 1 8 inche s o f soi l wa s als o complete di n th e recreationa l areas , whic hinclude dth e extensio nsectio n an drailroa dmuseum , wher e lea dan darseni c concentration s exceede d2,20 0 pp man d90 0 ppm , respectively
. Thes e cleanu p level s wer e chose nbase do n CERCL A ris k assessmen t methodolog y considerin g bioavailabilit y o f th e contaminan t

for man dexposur e scenario s fo r curren t an dfutur e anticipate dlan dus e suc ha s recreationa l visitors
. I n area s wher e soi l wa s no t removed , aprotectiv e ca p o f soi l and/o r

roc k wa s placed
. Recor d o f

Decisio n O n Septembe r

27 , 2007 , th e Assistan t

Regiona l Administrato r

fo r th e Offic e o f Ecosyste mProtectio n an dRemediatio nsigne daRecor do f Decisio ndocumentin g th e selecte d remedy
. Th e remed y take s int o accoun t al l remova l wor k

complete dt o date , include s n o furthe r remedia l construction , an dinclude s implementatio no f institutiona l control s (ICs ) an d monitorin g a s neede dt o protec t th e integrit y o f

th e previousl y complete dremova l an d reclamatio n actions
.

Th e curren t

conservatio n easemen t

o n th e Pin e Canyo nConservatio nAre a establishe db y Atlanti c Richfiel dan dth e Stat e o f Utah , Departmen t

o f Natura l Resources , Divisio n o f

Wildlife Resource s wil l remai ni n place
. Th e conservatio neasemen t i s a n agreemen t t o preserv e an dprotec t

foreve r th e wildlife , natural , scenic , ope n space , an deducationa l value s o f th e property ; an dt o preven t an y us e o f

th e propert y tha t

wil l significantl y impai r

o r interfer e wit h th e wildlif e habita t

o r othe r conservatio nvalues
. Activitie s tha t woul dimpac t

remedia l feature s ar e prohibited , suc ha s drilling , an dexploration , filling , excavating , mining , dredging , an d remova l o f

to p soi l an dothe r

materials , an dcommercial , industrial , an dagricultura l us' e a s se t fort hi nth e conservatio n easement
. Atlanti c Richfiel drecentl y purchase daparce l o f lan d adjacen t t o th e conservatio n area . Thi s propert y i s no t currentl y covere db y th e conservatio n easemen t o nth e forme r

smelte r property , althoug hEP A understand s Atlanti c Richfiel di s intereste di nmodifyin g th e easemen t t o includ e it
. IC s ar e neede dt o supplemen t th e conservatio n easemen t

an dt o ensur e i t

specificall y addresse s an dprotect s th e existin g remedia l features
. Example s includ e dee drestriction s o r modificatio no f

th e conservatio neasement
. I n addition , upgrade dengineerin g an dinformationa l controls , suc ha s perimete r fencin g an d signage , woul dcontinu e t o b e maintaine db y th e Uta hDivisio no f Wildlif e Resource s an dwoul d hel p limi t unauthorize dus e o f

th e property
.Th e Pin e Canyo n communit y i s privatel y owne db y individua l homeowner s an d

residents
. Othe r

propertie s nea r

th e sit e ar e currentl y i nagricultura l use , bu t give n th e rat e o f developmen t

i n th e are aman y o f

thes e propertie s ar e likel y t o becom e residentia l i n th e future
. Fo r Lincol n Township/Pin e Canyon , IC s consistin g o f governmenta l ordinance s an dpermi t program s administere dthroug hth e Tooel e Count y buildin g an dhealt hdepartment s ar e expecte d t o appl y t o futur e developabl e area s wher e meta l concentration s ar e belo w recreationa l visito r cleanu p levels , bu t

abov e residentia l huma n healt hcleanu p levels
. IC s throug hth e Tooel e Count y buildin g an dhealt hdepartment s ar e als o expecte dt o appl y t o existin g developmen t wher e soi l contaminant s i n exces s o f cleanu p level s migh t

b e disturbe ddurin g propert y modifications
. On e exampl e o f suc hasuitabl e 1 C i s bein g developed
. A n overla y zon e fo r portion s o f

Pin e Canyo n wit hdevelope r guideline s wil l identif

y th e procedure s fo r

certifyin g tha t soil s ar e belo w residentia l cleanu p level s prio r t o occupanc y o f

ne w homes
. Atlanti c Richfield , developers , o r

landowner s seekin g t o chang e th e us e o f undevelope dland , suc ha s fro m agricultura l t o residential , recreationa l visitor , o r commercial , wil l b e require dt o mee t al l requirement s an dspecification s fo r th e ne w use . Th e Tooel e Count y buildin g an dhealt h departments , wit hassistanc e a s necessar y fro mEP A an dUDEQ , ar e expecte dt o enforc e th e IC s fo r soil
. Fo r th e TVRR , currentl y existin g IC s consis t o f privat e part y agreement s wit hth e landowne r

an dAtlanti c Richfiel dtha t limi t futur e developmen t

an dactivitie s fro mpenetratin g th e roc k cover . Th e selecte dremed y wil l ensur e th e enforceabilit y o f suc hagreements
. Monitorin g wil l b e require dfo r al l thre e area s o f

th e site
. Monitorin g b y Atlanti c Richfiel dwil l consis t

o f checkin g th e integrit y o f th e cap s an dcover s an dstor mwate r control s o n aregula r

basis
. Atlanti c Richfiel dwil l monito r an dmaintai n th e conservatio n area . Groundwate r

wil l b e monitore da t

th e conservatio n are aan dEP A an dUDE Q wil l revie w groundwate r

monitorin g report s t o ensur e tha t th e forme r

smelte r are adoe s no t

becom e asourc e o f groundwate r

contaminatio n i n th e future
. I n addition , EP A and/o r UDE Q wil l monito r

th e IC s t o ensur e the y remai n i n plac e an dserv e thei r intende dpurpose . III
. DEMONSTRATIO N O FCLEANU PACTIVIT Y QUALIT Y ASSURANC EAN D QUALIT Y CONTRO L Th e sit e wa s remediate di n accordanc e wit haserie s o f administrativ e order s (AOs)
. Pursuan t t o thes e orders , th e PR Pwa s require dt o develo p an dfollo w certai n qualit y assuranc e an dqualit y contro l (QA/QC ) protocols
. EP A an dth e Stat e oversa w th e remova l action s take n pursuan t t o thes e orders
. Constructio n activitie s a t th e sit e wer e determine dt o b e consisten t wit h th e AOs , plan s an dspecification s submitte db y th e PR Pan dapprove db y EP A an dth e State
. Al l wor k wa s performe di naccordanc e wit happrove dplans , an dth e plan s incorporate d al l o f EPA' s requirements
. EP A an dStat e regulator s frequentl y visite dth e sit e durin g implementatio n o f

th e remova l action s t o revie w progres s an devaluat e an drevie w th e result s o f QA/Q C activities
. Deviation s o r non-adherenc e t o QA/Q C protocols , drawings , o r specification s wer e properl y documente dan dresolved
. Qualit y Assuranc e Projec t Plan s fo r th e sit e incorporate dal l EP A an dstat e QA/Q C procedure s an dprotocols
. EP A analytica l method s wer e use dfo r al l confirmatio n an d

### monitorin g sample s durin g remova l activities
. EP A an dth e Stat e determine dtha t analytica l result s ar e accurat e t o th e degre e neede dt o assur e satisfactor y executio no f th e actions
. 

### IV
. ACTIVITIE S AN D SCHEDUL EFO RSIT ECOMPLETIO N Th e followin g activitie s remai nfo r th e I S & Rsite : 

### Tas k 1 ) Implementatio no f Institutiona l control s 2 ) Longter mO & M Pla n 3 ) Fiv e Yea r

Revie w 4 ) Approv e Fina l Clos e Ou t Repor t 5 ) Deletio nfro mth e NP L Estimate dCompletio n Jun e 200 8 Jun e 200 8 Septembe r 20 1 1 Decembe r 200 8 Septembe r 200 9 Responsibl e Organizatio n

PRP , Tooel e County , EPA
. UDE Q PR P EP A EP A EP A


### V
. SUMMAR YO FREMEDIATIO NCOST S A t th e tim e tha t

thi s Preliminar y Clos e Ou t Repor t wa s prepared , th e followin g projec t cost s hav e bee nreporte db y th e PR Pan dEPA : (Cos t show ni nmillion s o f

dollar s incurre di nth e yea r shown ) Cost s throug h200 0 $3. 8 Reclamatio no f

Conservatio nAre aan dO& M Activit y 200 1 

### Maintenanc e o f

Dr y Cree k

Canyo nsid e slope s $0. 7 Preliminar y Sit e Investigatio n 200 2 $1. 5 Remedia l Investigatio n Maintenanc e o f

Pin e Canyo nsid e slope s Agenc y oversigh t

cost s 200 3 $1. 5 Remedia l Investigatio n Agenc y oversigh t

cost s 2004 Remedia l Investigatio n$1. 5 Partia l Remova l Actio nLincol nTownshi p (TCRA ) Agenc y oversigh t

cost s200 5 $3. 5

Remedia l Investigation/Feasibilit y Stud y Partia l remova l actio nLincol nTownshi p (TCRA ) Remova l Actio nTooel e Valle y Railroa d(TCRA ) Partia l Conservatio nAre aRemova l Actio n Agenc y oversigh t

cost s 200 6 $1. 2 Remedia l Investigation/Feasibilit y Stud y Partia l Conservatio nAre aRemova l Actio n Agenc y oversigh t

cost s 200 7 (thr u Augus t

31 , 2007 ) $1. 3 Remedia l Investigation/Feasibilit y Stud y Tota l Projec tt o Dat e $1 5 millio n Th e selecte dremed y i n th e RO D i s estimate dt o cos t $25,00 0 t o $100,00 0 pe r yea r fo r monitoring , periodi c reviews , repai r an denforcement
. Th e cos t estimat e include s maintenanc e an drepai r o f cap s an dcovers , vegetation , stormwate r controls , erosio ncontrol s an dfencing
. Mos t cost s associate dwit hIC s wil l b e incurre ddurin g th e plannin g an dinitia l set-up
. Th e ne t presen t valu e o f th e IC s anticipate dt o b e necessar y i s withi nth e rang e o f $400,00 0 t o $1. 5 millio ndollars , calculate dfo r aperio do f

3 0 years . EPA' s oversigh t

cost s a t th e sit e totale dapproximatel y $2,023,51 5 throug hApri l 30 , 2007
. 

### VI
. FIVE-YEA RREVIE W Hazardou s substance s wil l remai na t th e sit e abov e level s tha t

allo w unlimite dus e an d unrestricte dexposur e afte r th e completio no f

th e remedia l activities
. Pursuan t t o CERCL A Sectio n121(c ) an da s provide di n th e curren t guidanc e o n Five-Yea r

Reviews : OSWE R Directiv e 9355.7-03B-P
. Comprehensiv e Five-Yea r Revie w Guidance , Jun e 2001 , EP A mus t conduc t astatutor y five-yea r

review
. Th e five-yea r

revie w repor t

wil l b e complete dprio r

t o Octobe r 2011
. Approva l by :

"I! ~-~-^^^^^^f~~~\^^

Caro l Rushin , Assistan t

Regiona l Administrato r

Dat e Offic e o f Ecosystem s Protectio nan dRemediatio n Unite dState s Environmenta l Agency , Regio n8