### 1055084



### OPERATIO N AN D MAINTENANC EPLA N MIDVAL ESLA GSUPERFUN D SITE OPERABL E UNI T 2 MIDVALE , UTA H

Prepare dFor : Littleson , Inc
. Rober t Soehnle n 210 0 Eas t Benga l Blvd. , #F20 3 Sal t Lak e City , Uta h8412 1

Prepare dBy : ENTAC T Services , LL C 312 9 Bas s Pr o Driv e Grapevine , Texa s 7605 1

Revisio n2 Jun e 14,200 6


## ENTAC TTable of Contents Operation

and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006 TABL E O F CONTENTS 1. 0 INTRODUCTIO N 1- 1 1. 1 Purpos e an dObjectiv e 1- 1 1. 2 Sit e Locatio n an dDescriptio n 1- 1 1. 3 Sit e Histor y 1- 2 1. 4 Remedia l Actio n Activitie s 1- 3 2. 0 OPERATIO N AN D MAINTENANC E 2- 1 2. 1 Inspection s an dMaintenanc e 2- 1 2.1. 1 Cove r

Syste m2- 1 2.1. 2 Perimete r

Fenc e .....2- 2 2.1. 3 Stormwate r

Contro l Measure s 2- 2 2.1. 4 Riparia n Zon e 2- 2 2.1. 5 Monitorin g Well s 2- 2 2. 2 Correctiv e Actio n 2- 3 2.2. 1 Repair s 2- 3 2.2. 2 Soi l Amendment s 2- 3 2.2. 3 Riparia n Zon e 2- 3 3. 0 Institutiona l Control s 3- 1 3. 1 Developmen t

Requirement s 3- 1 3. 2 Institutiona l Control s 3- 1 3. 3 Implementatio n Mechanism s 3- 2 4. 0 POST-RESPONS E ACTIO N CONTACT S : 4- 1
LIS T O F APPENDICE S Appendi x A Post-Remedia l Actio n Inspectio n Recor dForm



## ENTAC TSection 1.0 Introduction Operation and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006' 1. 0 INTRODUCTIO N Thi s Operatio n an dMaintenanc e (O&M ) Plan ha s bee nprepare do n behal f o f Littleson , Inc
. (Littleson ) fo r

th e Midval e Sla g Superfun dSite , Operabl e Uni t No
. 2 (OU 2 Site)
. Thi s O& M Pla n ha s bee n prepare dt o supplemen t t o th e Remedia l Actio nWorkpla nan dothe r associate d plan s fo r remedia l actio n activitie s conducte da t th e OU 2 Sit e an dt o compl y wit hth e requirement s o f

th e Recor do f

Decisio n(ROD ) date dOctobe r 200 2 an dth e Consen t

Decre e (CD) , lodge do n Septembe r 10 , 2004
. 1. 1 Purpos e an d Objectiv e Th e purpos e o f

thi s O& M Plan i s t o establis hth e operatio nan dmaintenanc e requirement s necessar y t o maintai nth e effectivenes s o f th e complete dremedia l action
. Thi s O& M Pla

n wil l b e implemente da s describe dfo r th e following : 1 ) ENTACT' s 1

- yea r O& M warrant y perio dwhic hbegin s immediatel y afte r eac hportio no f

gras s i s plante dan dcontinue s fo r

aperio do f

1 yea r afte r th e completio no f

th e fina l inspection ; an d2 ) Lirtleson' s O& M perio dwhic hbegin s upo nU.S
. EP A approva l o f th e completio n o f ENTACT' s 1-yea

r O& M warrant y work , a s indicate do n th e relevan t Inspectio n Checklis t (se e Appendi x C o f

th e Remedia l Desig n(RD)) , an dcontinue s unti l th e initiatio no f

redevelopmen t

activities
. A t

tha t time , th e requirement s o f

th e Institutiona l Contro l Proces s (ICP

) Plan wil l be implemente dfor the develope dportion s of

the OU2 Site
. Thi s O& M Pla

n describe s th e followin g elements :

• Objective ; • , Sit e locatio n an ddescription ;
• Sit e history ; • Summar y o f

remedia l actio nactivities ; • OU 2 Sit e operatio n an dmaintenanc e activities , includin g inspection , maintenanc e an dcorrectiv e action ; an d
• Relevanc e o f

th e Institutiona l Control s 1. 2 Sit e Locatio n an d Descriptio n Th e Midval e Sla g Superfun dSit e (Site ) i s locate di nMidval e City , Uta happroximatel y 1 2 mile s sout

ho f Sal t Lak e City , Utah
. Th e Sit e i s bordere dt o th e sout hb y 780 0 South Street , t o th e wes t

b y th e Jorda n River , t o th e nort hb y 640 0 SouthStree t (Wincheste r Avenue) , t o th e northeas t

an deas t b y 70 0 Wes t

Street , an dt o th e southeas t b y Holde n Street
. Th e Sit e encompasse s approximatel y 44 6 acre s an dconsist s o f 2 operabl e units : Midval e Sla g Operabl e Uni t No
. 1 (OU1 ) an dMidval e Sla g Operabl e Uni t No
. 2 (OU2)
. OU 1 comprise s th e norther n portio no f th e Sit e an dOU 2 comprise s th e souther nportio n 

## © ENTAC T 

## 1- 1Section 1.0 Introduction Operation

and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 • June 14, 2006
o f th e Site
. OU 2 i s th e subjec t o f thi s Operatio n an dMaintenanc e Pla n an dconsist s o f approximatel y 18 0 acre s locate dbetwee n 720 0 SouthStree t an d780 0 Sout hStreet
. 1. 3 Sit e Histor y Th e smelter s receive dan dprocesse dor e mine dfro mth e Oquirr hMountain s an dsmelte d th e mille dore s t o produc e lead , arsenic , copper , an dothe r metals
. Sinc e 1982 , th e sit e ha s bee n th e subjec t o f aserie s o f

environmenta l studie s conducte d by , amon g othe r

groups , federal , state , an dloca l governmenta l agencies
. I n 1984 , th e State o f Uta hBurea u o f

Soli dan dHazardou s Wast e conducte dasit e inspectio n an d foun delevate dlevel s o f

heav y metal s i n soil s a t

th e site
. I n 1985 , th e U.S
. EP A conducte dafiel dinvestigatio no f th e sit e an ddiscovere dth e presenc e o f heav y metal s impact s i n sedimen t

sample s collecte dfro mth e Jorda n River
. Base do n th e result s o f

th e environmenta l studies , i n Februar y 1991 , th e U.S
. EP A place d th e Midval e Sla g Sit e an dth e Sharo n Stee l Site , locate dt o th e southo f th e Midval e Sla g Site , o n th e Nationa l Prioritie s Lis t (NPL)
. Th e listin g wa s du e t o th e potentia l threat t o huma n healt han dth e environmen t pose db y th e disposa l o f

wast e material s o n th e tw o sites
. Thi s wa s accomplishe dpursuan t t o th e Comprehensiv e Environmenta l Response , Compensation , an dLiabilit y Ac t (CERCLA ) o f

1980
. B y 1999 , th e U.S
. EP A an dUta hDepartmen t o f Environmenta l Qualit y (UDEQ ) ha d complete dth e cleanu p o f

th e Sharo n Steel Superfun dSite
. Remedia l actio n activitie s at thi s sit e consiste do f

th e installatio no f

aca p ove r

th e tailing s pile , th e constructio n o f a wetland , an dth e cleanu p o f impacte dsoil s locate do n 60 0 propertie s i n Midval e City
. B y tha t date , th e agencie s ha dals o complete dwork o n severa l part s o f

th e Midval e Sla g Superfun dSite
. Remedia l actio n activitie s a t th e sit e include dth e cleanu p o f impacte d soil s a t th e Wincheste r

Estate s Mobil e Hom e Park an dvacan t

lan dlocate do n th e norther n 270-acr e portio n o f th e Sit e o r

OU1
. Lea dan darseni c impacte dsoil s i n th e residentia l yard s wer e remove dan dbackfille dwit hclea n soil
. Othe r remedia l actio n activitie s conducte db y 199 9 include dth e installatio n o f perimete r

fencin g o n th e property , detonatio n o f

explosive s fro man abandone don-sit e laboratory , removal o f arsenic-impacte dsoil s fro mth e Butterfiel dLumbe r property , an dth e cleanu p o f impacte d soil s a t th e histori c Midval e Pionee r Cemetery
. I nMa y an dJun e 2001 , a t

th e reques t

o f th e U.S
. EPA , a n additiona l fiel dinvestigatio n wa s conducte da t

OU 1 an dOU2
. Soil , sediment , surfac e water , an dgroundwate r sample s wer e collecte dfro mth e sit e t o characteriz e th e exten t o f contaminatio n fro m inorgani c an dorgani c constituents
. I n Octobe r 2001 , U.S
. EP A implemente dadru m remova l actio n a t

OU1
. Thi s actio n conclude dth e OU l remediatio n activities
.


## ENTAC T 1. 2Section 1.0 Introduction Operation and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006 I n Septembe r

2002 , afiel dtrenchin g investigatio nwa s conducte da t th e OU 2 Sit e t o determin e th e potentia l presenc e an dexten t o f Categor y I Materia l locate di nth e forme r Baghous e Dus t

Pon dArea
. Investigator y result s conclude dtha t excavatio nwa s no t necessary i nthi s are adu e t o th e existenc e o f minimal , i f

any , amount s o f

suc hmaterial
. A s part o f th e desig n process , limite dpre-desig nactivitie s wer e undertake ni n 2003
. Thes e activitie s include dcompletin g abaselin e topographi c survey , conductin g asurfac e debri s inventor y an dconductin g thre e phase s o f geotechnica l investigation
. O n Octobe r

29 , 2002 , U.S
. EP A issue dth e RO D fo r OU2
. Th e RO D identifie dthre e contaminate dby-product s o r medi aon-site , includin g mixe dsmelte r waste , sla g an d groundwater
. Th e materia l wit hth e greates t impac t a t th e Site , mixe dsmelte r

wast e (MSW) , consiste do f

approximatel y 500,00 0 cubi c yard s o f variou s wastes , rangin g fro m ol dbuildin g material s t o highl y impacte dchemica l waste s (furthe r define da s calcin e waste , miscellaneou s smelte r wast e an dbaghous e dust)
. Several larg e sla g pile s mad e u p th e secon dmedia , includin g a n iro nsla g area , coppe r sla g area , air-quenche dsla g pile , an dwater-quenche dsla g pile
. I nJul y 1999 , Midval e Cit y receive dagran t fro mU.S
. EP A t o develo p areus e pla nfo r th e Site
. A pla n wa s adopte di n Augus t 200 0 an di s entitle dBinghamJunctio nReus e Assessmen t

an dMaster

Plan
. I n Novembe r

2001 , Midval e Cit y Counci l als o adopte dth e Bingha mJunctio n Ordinance
. Th e ordinanc e establishe s aproces s fo r developmen t

tha t allow s fo r residential , commercial , an drecreationa l use s o nth e property . 1. 4 Remedia l Actio n Activitie s Th e purpos e o f

th e remedia l actio na t

th e OU 2 Sit e wa s t o eliminat e o r contro l th e threa t o f exposur e t o mixe dsmelte r waste , sla g an dsoil s a t

th e sit e throug hdirec t

contact , inhalatio nan dingestio n b y remova l o f principa l threats , an dcontainmen t wit hcover s o f lo w leve l threats
. Th e majo r remedia l actio nactivitie s conducte da t th e OU 2 Sit e consiste do f

th e following :

• Decontaminatio n an ddemolitio no f on-sit e buildings ;
• Managemen t

o f debris ; • Disconnectio n an ddecommissionin g o f on-sit e utilities ; • Abandonmen t

o f on-sit e groundwate r

monitorin g wells ; • Gradin g an dcoverin g o f Category I I an dCategor y II I Material s i n accordanc e wit hspecifie dfutur e lan duses ; • Placemen t

o f Category I V Materia l a s on-sit e fil l an da s abarrie r ove r Category I I an dCategor

y H I Material areas ; • Constructio n o f

th e Riparia nZone , includin g th e installatio no f avegetativ e cove r alon g adjacen t

section s o f

th e eas t sid e o f th e Jorda nRiver ; • Placemen t

o f commo n fil l an dcove r

soil ; an d
• Seeding , establishmen t an dmaintenanc e o f

vegetation
. 

## OENTAC T 1- 3Section 2.0 Operation

and Maintenance Operation

and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006 2. 0 OPERATIO N AN D MAINTENANC E Operatio n an dmaintenanc e activitie s associate dwit hth e OU 2 Sit e wil l consis t o f th e inspectio n an dmaintenanc e o f

th e cove r system . ENTACT' s 1-year O& M warrant y perio dwil l begi n immediatel y afte r

eac hportio n o f

gras s i s plante dan dwil l continu e fo r aperio do f

1 year afte r th e completio n o f

th e fina l inspection
. A t

th e en do f

ENTACT' s 1-year

O& M warrant y perio d an dupo n U.S
. EP A approva l o f th e completio n o f

th e O& M warrant y work , a s indicate do n th e relevan t Inspectio n Checklis t

(se e Appendi x C o f

th e RD) , Littleso n wil l assum e responsibilit y fo r O& M activitie s unti l developmen t activitie s ar e initiate da t

th e OU 2 Site
. Onc e developmen t i s initiate dat

th e OU 2 Site , th e requirement s o f th e IC P Pla

n date dJul y 13 , 2004 , wil l b e implemented
. 

### 2. 1 Inspection s an dMaintenanc e T o maintai n th e integrit y o f th e post-remedia l actio n cove r system , th e surfac e restoration , vegetatio n an dstormwate r control s mus t

b e maintained
. Th e O& M warrant y perio dfo r whic hENTAC T i s responsibl e fo r wil l begi n immediatel y afte r eac hportio n o f gras s i s plante dan dwil l continu e fo r aperio do f

1 yea r afte r th e completio n o f

th e fina l inspection
. Th e inspection s wil l b e schedule dfo r aminimu mo f

on e pe r mont hfo r

th e firs t quarte r an donc e aquarte r

fo r th e remainde r

o f th e on e yea r

period
. Th e inspection s wil l involv e th e evaluatio n o f th e integrit y o f

th e cover . Deficiencie s i n th e cover , suc ha s deficiencie s tha t pos e aris k

t o th e cove r

o r afaul t i n th e cove r

system , wil l b e identified , i f

present , durin g th e inspection
. Th e appropriat e correctiv e actio n wil l b e implemente dwhe n necessary . Th e result s o f eac hinspectio n wil l b e recorde do n th e Post-Respons e Actio n Inspectio n Recor dFormprovide di n Appendi x A
. An y deficiencie s wil l b e note dalon g wit hth e subsequen t require dcorrectiv e action
. 2.1. 1 Cove r

Syste m Durin g th e O& M warrant y period , th e conditio n an dintegrit y o f th e cove r syste mwil l b e routinel y inspected
. Th e cove r syste mwil l b e inspecte dfo r sign s o f erosion , subsidence , los s o f gras s vegetation , includin g bar e spots , o r othe r condition s tha t

ma y compromis e th e integrit y o f

th e cove r system . Additionally , th e cove r syste mwil l b e inspecte dt o ensur e tha t

asatisfactor y stan do f

gras s i s produce dan dtha t undesirabl e plan t

specie s ar e addressed
. A t

th e en do f

th e 1-year

warrant y period , asatisfactor y stan do f gras s wil l hav e bee n establishe dan dafina l inspectio n wil l b e conducted
. A s define di n Sectio n 0260 0 - OPERATIO N AN D MAINTENANCE , subpar t 3.3 , (B ) o f

th e RD , asatisfactor y stan di s define da s gras s o r asectio n o f

gras s o f 10,00 0 squar e fee t

o r large r tha t has :

• N o bar e spot s large r tha n 3 squar e fee t

i n area ; an d
• N o mor e tha n1 0 percen t o f th e tota l are awit hbar e spot s large r tha n 1 squar e foot
. 

## ENTAC T 2- 1Section 2.0 Operation and Maintenance Operation and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006'
Maintenanc e o f

th e vegetate dcove r

syste mwil l includ e mowing , watering , repai r o f washe dou t

areas , an dre-seeding , a s necessary . A temporar y irrigatio nsystem , i f sufficien t wate r suppl y exist s for

operation , wil l be use ddurin g the O&M warranty perio dt o maintai n gras s growth , a s needed
. Washe dou t area s wil l b e repaire db y fillin g i nth e washe dou t

are awit hcove r

soil , addin g th e appropriat e soi l amendment s t o initiat e vegetativ e growth , an dre-seedin g th e repaire darea . Undesirabl e plan t specie s wil l als o b e controlled , a s necessary . 2.1. 2 Perimete rFenc e T o provid e continue dsit e security, th e conditio no f th e existin g perimete r

fenc e an dgat e syste mwil l b e inspecte dfo r sign s o f damage , loos e post s an dgate an dloc k operation
. Th e integrit y o f

th e fenc e wil l b e inspecte di n orde r t o preven t

unauthorize dacces s t o th e OU 2 Site
. Th e bas e o f

th e fenc e are awil l b e inspecte dfo r erosio no r

vandalism , whic h ma y resul t

i nspac e beneat hth e fenc e larg e enoug hfo r th e passag e o f

animal s o r

people
. Sign s wil l b e inspecte dfo r damage , legibility , fading , an dvandalis malon g th e fenc e perimeter
. Unauthorize dacces s an dsit e securit y wil l b e maintained
. 2.1. 3 Stormwate rContro l Measure s Stormwate r

contro l measure s initiall y installe da s par t o f th e OU 2 Sit e remedia l actio n activitie s (i n accordanc e wit hth e Stormwate r Pollutio nPreventio nPla

n an dSectio n 0227 0 - STORMWATE RAN D SURFAC EWATE RCONTROL S o f th e RD ) wil l b e maintaine dunti l asatisfactor y stan do f gras s i s develope dan d70 % o f th e disturbe dare a i s vegetated
. Th e Stormwate r control s wil l contro l run-of f velocitie s an dminimiz e erpsio n whil e th e gras s i s establishing
. N o additiona l Stormwater contro l measure s wil l b e installe da s par t

o f th e 1-year

O& M warrant y period
. 2.1. 4 Riparia n Zon e Th e riparia n are awil l b e inspecte dt o ensur e tha t th e vegetate dcove r

i s maintaine dan d th e functio no f

th e are ai s consisten t

wit hit s state duse(s)
. Parameter s tha t wil l b e monitore dma y includ e strea mban k stability , includin g undercutting , vegetativ e composition , exten t

o f vegetativ e cover , an dplan t growthan dproduction
. Erosio n contro l measure s use dspecificall y o n th e bank s o f th e Jorda nRive r

(i.e. , mattin g o r blankets ) wil l als o b e inspecte dan dmaintained
. 2.1. 5 Monitorin g Well s Th e disturbanc e o f

an y groundwate r

monitorin g well s installe dafte r completio no f constructio n activitie s wil l b e prohibite ddurin g th e O& M period
. 

## ENTAC T 2- 2Section 2.0 Operation and Maintenance Operation and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006 2. 2 Correctiv e Actio n Deficiencie s tha t

ar e detecte ddurin g inspection s an dtha t pos e aris k

t o th e integrit y o f th e cove r syste m(i.e. , settling , subsidence , erosion , damag e t o th e cover , and/o r . undercutting ) wil l b e note do nth e Post-Respons e Actio n Inspectio n Recor dFor m (Appendi x A)
. Thes e deficiencie s wil l b e correcte da s soo n a s possible , bu t n o late r tha n 3 0 day s fro mth e dat e o f

th e inspection
. Th e typ e o f correctiv e actio n an dit s implementatio ndat e wil l als o b e note do n th e Post-Respons e Actio n Inspectio n Recor d Form
. 2.2. 1 Repair s Area s identifie da s havin g a ninsufficien t stan do f grass , a s previousl y defined , wil l b e re seeded
. Th e see duse dwil l b e certifie dan dclean
. Th e see dmi x wil l b e a s follows : Wester n Wheatgras s 5 pur e liv e see d(pis ) pound s (Ibs ) pe r acre ; Slende r

Wheatgras s 4 pi s Ib s pe r acre ; Sandber g Bluegras s 0. 5 pi s Ib s pe r acre ; Shee p Fescu e 1 pi s Ib s pe r acre ; Mountai n Brom e 6 pi s Ib s pe r acre ; Smal l Burne t

3 pi s Ib s pe r

acre ; Blu e Fla x 0. 4 pi s Ib s pe r acre ; an dWhit e Yarro w 0. 1 pi s Ib s pe r acre ; o r a n approve dequal
. I f th e additio n o f

supplementa l soi l cove r

i s warranted , th e materia l wil l mee t th e sam e requirement s an dsamplin g proces s require dfo r al l cove r syste mmateria l use ddurin g surfac e restoratio n activitie s o f th e RD
. Th e soi l wil l b e natural , friabl e soil , representativ e o f

productiv e soil s i nth e vicinity
. I t wil l b e fre e o f

admixture , subsoil , foreig nmatter , object s large r tha n 2 inche s i ndiameter , toxi c substances , an dan y othe r deleteriou s material
. 2.2. 2 Soi l Amendment s Soi l amendment s wil l b e adde dt o th e repaire dcove r soi l i f condition s warrant . Thes e amendment s ma y includ e sulfur , nitrogen , potash , sulfate , commerciall y package d gypsu mo r

groun ddolomiti c limestone , lime , fertilizer , o r superphosphate
. Textura l soi l amendment s ma y includ e peat , manur e o r sand
. Mulc hwil l b e place do n th e repaire d are at o stabiliz e th e newl y plante dsee dan dminimiz e erosion
. Mulc hma y als o b e place d o n th e bank s o f

th e riparia n are awher e previou s amendment s hav e washe do r blow n away . 2.2. 3 Riparia n Zon e Th e erosio n contro l mat s an dblanket s use do n th e bank s o f th e Jorda n Rive r

wil l b e replace do r

repaire da s deeme dnecessary .



## ENTAC T 2 

## . 3Section 3.0 Institutional

Controls Operation and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006' 3. 0 INSTITUTIONA L CONTROL S Th e IC PPlan ha s bee n prepare dt o documen t th e requirement s an dprocedure s an destablis h bindin g an denforceabl e institutiona l control s tha t wil l facilitat e futur e constructio n activitie s a t th e OU 2 Sit e whil e a t

th e sam e tim e maintainin g th e short-ter man dlong-ter meffectivenes s o f th e implemente dremedy
. Th e institutiona l control s tha t wil l b e implemente dar e intende dt o limi t o r prohibi t huma n exposur e t o contaminant s an dt o protec t th e physica l barrier s tha t

hav e bee n place da t

th e OU 2 Sit e t o limi t

suc hexposure . Specifi c IC s an dth e mechanism s use dt o implemen t

thes e control s are detaile di n th e 1 C Plan
. I n general , publi c controls , suc ha s buildin g permits , subdivisio n regulations , excavatio n permits , o r zonin g ordinances , an dprivat e controls , suc ha s covenants , dee drestriction s an dcontractua l agreement s betwee n propert y owner s an dlessees , ma y b e impose do n th e futur e developer s an dpropert y owner s o r lessee s t o ensur e th e effectivenes s o f th e 1 C Plan an dth e implemente dremedy
. 3. 1 Developmen tRequirement s Th e IC PPla

n detail s th e requirement s necessar y fo r th e managemen t

o f th e vegetate d soi l cove r system , th e managemen t

an ddisposa l o f

exces s excavate dsoil s o r smelte r wast e material s generate ddurin g developmen t activities , th e managemen t o f ne w wate r sources , an dth e developmen t o f singl e famil y residence s a t th e OU 2 Site
. Specifically , th e IC PPlan : 1 ) establishe s th e proces s throug hwhic hth e fina l vegetate dsoi l cove r systemwil l b e replace dan dmodifie da s necessar y fo r redevelopmen t

an dho w long-term operatio n an dmaintenanc e wil l b e accomplishe do n redevelope dparcel s o f lan dwithi n th e site ; 2 ) establishe s th e wate r managemen t

requirement s necessar y t o preven t ne w source s o f wate r fro minfiltratin g int o th e arseni c sourc e area s an dfurthe r impactin g th e subsurfac e aquifer ; an d3 ) describe s th e developmen t control s fo r

single-famil y residence s a t

th e OU 2 Site
. 3. 2 Institutiona l Control s Institutiona l Control s includ e submitta l o f asit e developmen t

pla n t o th e Cit y fo r approval , obtainin g aroa dcu t permit , an drequirement s fo r managemen t

an ddisposa l o f exces s soil s o r

smelte r waste . Implementatio n mechanism s ar e execute dan denforce d throug hth e Midval e Cit y Zonin g Ordinance s an dth e Midval e Cit y Municipa l Code
. Wate r managemen t

i s als o arequire dinstitutiona l control
. Wate r managemen t

include s th e requiremen t

tha t n o wate r well s b e installed , define s utilit y placemen t requirements , an ddefine s condition s necessar y t o limi t infiltratio no f

irrigatio n water . Th e mechanis m o f implementatio n an denforcemen t i s als o throug hth e Midval e Cit y Zonin g Ordinanc e an dMidval e Cit y Standar dConstructio n Specifications
.



## •ENTAC T 3- 1Section 3.0 Institutional

Controls Operation and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2

. June 14, 2006 3. 3 Implementatio n Mechanism s T o ensur e th e managemen t an dimplementatio no f

th e institutiona l control s a s outline d above , mechanism s fo r

implementin g thes e managemen t practice s ar e detaile di n th e IC P Plan
. Thes e mechanism s include :

• Amendment

of the Sections 17-7-3 and

17-7-9of the Midvale City Zoning Ordinance by Ordinance of the City Council

to include the provisions as stated in the ICPPlan;

• Amendment

of Section 12.12.150of

the Midvale City Municipal Code by, Ordinance of

the City Council

to include the provisions as stated in the ICPPlan;
• Amendmen t

o f th e Midval e Cit y Constructio nSpecification s b y Ordinanc e o f th e Cit y Counci l t o includ e th e provision s a s state di n th e IC PPlan ; an d
• Establishmen t

o f oversigh t an denforcemen t

role s an dresponsibilitie s fo r Littleson , Midval e City , U.S
. EPA , Uta hDepartmen t o f Environmenta l Qualit y (UDEQ) , an dth e landowner(s) , contractors , an dsubcontractor s workin g a t th e OU 2 Site
.



## 0ENTAC T 3- 2• Section

4.0 Post-Response

Action Contacts Operation and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006 4. 0 POST-RESPONS E ACTIO N CONTACT S Th e post-remedia l actio n contac t fo r ENTACT' s 1-year

O& M Warrant y Perio di s a s follows : Li z Scagg s ENTAC T Service s LL C 312 9 Bas s Pr o Driv e Dallas , Texa s 7605 1 (972)580-132 3 (972 ) 550-746 4 (facsimile ) lscaggs@entact.co m Th e post-remedia l actio n contac t fo r Littleson' s O& M responsibilitie s i s a s follows : Robert Soehnle n Littleson , Inc
. 210 0 Eas t Benga l Blvd
. #F20 3 Sal t Lak e City , Uta h8412 1 (801)943-308 5 (801 ) 943-309 5 (facsimile ) rsoehnlen@earthlink.ne t



## OENTAC T 4- 1Appendix A Operation

and Maintenance

Plan Midvale Slag Superfund

Site Operable

Unit No. 2 Revision 2 June 14, 2006

APPENDI X A POST-REMEDIA LACTIO N INSPECTIO N RECOR D FORM



## ENTAC TPOST-REMEDIALACTION INSPECTION

RECORD

FORM Midvale Slag Superfund

Site Operable

Unit No. 2 Inspectio nDate : • Inspector' s Name : Inspector' s Signature : Time : Company :

INSPECTIO N ITE M Fencin g

Cove r

Stormwate r INSPECTION F

REQUENC Y Monthl y th e firs t quarter , quarterl y fo r th e remainde r o f th e firs t year , annuall y thereafte r Sam e

Same POSSIBLE ERROR ,

MALFUNCTION , O RDETERIORATIO N

* Damaged , broke no r

loos e fencepos t * Loos e o r broke nwir e /damage dfenc e * Damage dgat e /

inoperabl e lock s * Excessiv e erosio no nfenc e perimete r * Illegibl e o r

missin g warnin g signs

* Settlemen t

o r subsidenc e * Indicator s o f

damag e o r

erosio no f

cove r * Erosio no r

undercuttin g perimeter s * Los s o f vegetatio n * Integrit y o f

erosio ncontro l mat s o r

blanket s * Undesirabl e plan t

specie s * Othe r Condition s * Integrit y o f

stormwate r

control s STATU S ACCEPTABL E UNACCEPTABL E

Require d Correctiv e Actio n Dat e Correctiv e

Actio n Complete d

-

Comment s an dDescriptio no f Correctiv e Action :