UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y REGION

VIII ^_____ 99 9 18t h STREE T- SUIT E 50 0 ^ DENVER , COLORAD O 80202-246 6 S PMS.Documen t I D 

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INITIA L POLLUTIO

NREPOR T Midval e Sla g OU 2 (RV5 ) Cemetery

I . HEADIN

G Date : Subject : From : To : POLRE P No , 11/21/9 6

Midval e Sla g NP L Sit e (OU2 ) [RV5 ] Cemetery Mik e Zimmerman , OS C Ann e Spencer , EPAHeadquarter s EmergencyRespons e INITIA L POLRE P # 1

II . BACKGROUN

D Sit e No. : CERCLI S No : Respons e Authority : Stat e Notification : Actio n Memorandum : Star t Date : Completio n Date : 7 1 UTD08183427 7 CERCLA UDE Q Notifie d 10/29/9 6 10/31/9 6 N/ A
III . SITE INFORMATIO N A . Inciden t Category Time-Critical , NP L B . Sit e Descriptio n 1 . Sit e Descriptio n Th e entir e Midval e Slag sit e consist s o f abou t 53 0 acres ; OU 2 cover s abou t 20 0 acre s o f th e Site . A smelte r operate d o n OU 2 fro m189 7 unti l 1958 . Ove r th e years , i t change d fro ma coppe r t o a lead smelting facility , producing gold/lead/silve r bullio n fro m sulfid e ores . Thi s Remova l Actio n wil l addres s th e nee d t o mitigat e th e threa t o f contaminatio n o f th e

Printed on Recycled

Paper3 •• - •

air , surfac e an d groun d wate r pose d b

ylead an

d arseni c whic hi s th e resul t o f th e slag , dross , an d dus t fro

ma forme r coppe r an

d lead smelting operatio n an d calcin e derive d fro

mth e roasting o f arsenopyrite . Th e Sit e i s the portio n o f OU 2 whic hi s an ol d cemeteryan d provide s 1 ) direc t acces s t o visitors/trespasser s i n the area s wher e hazardou s substance s exist , an d 2 ) airborn e migratio n o f hazardou s substance s fro mthe Site . 2 . Descriptio n o f Threa t

Th e forme r smelte r area , wher e th e Sit e i s located , contain s a variet yo f heav ymetal s tha t ar e considere d pollutant s o r hazardou s substance s a s define d b

ySectio n 101(14 ) o f CERCLAbecaus e th e "mixe d smelte r waste " i n thi s are a ha s concentration s o f hazardou s substance s fro mthe smelte r building demolitio n debris , tailing s (miscellaneou s smelte r waste) , calcine , and ba g dust . Th e Sit e ha s visitor s t o th e cemeteryan d trespassers . Th e semi-ari d climat e o f th e are a provide s a situatio n fo r th e hazardou s substance s and/o r contaminant s on-sit e t o b e airborn e an d migrat e off-sit e during th e dry , wind ydays . C . Sit e Evaluatio n Result s A s a par t o f th e Midval e Slag OU 2 Engineering Evaluation/Cos t Analysi s (EE/AC) , the Sit e wa s include d i n Phas e I an

d Phas e I I investigation s an d backgroun

d stud y (EP AContrac t No . 68-W9-0032) . The EE/CASummar yRepor t (May , 1994 ) i s containe d i n thre e volume s an d i s availabl e i n th e Superfun

d Record s Cente r fo r Regio n VII I EPA . Th e analyse s demonstrat e tha t seriou s level s o f contaminatio n exis t a t th e cemeterysite , wit hlead an d arseni c i n th e calcin e reaching level s a s higha s 13,49 0 pp man d 21,26 8 ppm , respectively .>•• *

IV . RESPONS E INFORMATIO N A . Situatio n 1 . Curren t Situatio n O n Octobe r 31 , 1996 , the EP AERG S Contracto r mobilize d t o th e Sit e an d th e excavatio n wa s initiate d b ya crewo f si xcleanu p technicians , a fiel d clerk , respons e management , an d an industria l hygienist . Excavate d materia l wa s transporte d t o OU 2 an d stockpiled i n a temporar ystorag e area . Dus t suppressio n fo r th e stockpil e wa s provide d b ya wate r truck , an

d a fir e hydran t hos e wa s use d t o suppres s dus t fro

mth e excavating machinery . Surfactan t wa s use d t o cove r th e stockpil e a t th e en d o f eac hworkday . 2 . Nex t Step s Th e Contracto r plan s t o continu e removing th e contaminate d materia l a t th e directio n o f EPA . V . COS T INFORMATIO N Thi s i s th e initia l POLREP , bu t cost s fo r th e ERG S Contracto r ar e estimate d a t $65,000 .

## POLREPFILE GENERATION (to be submitted

byOSC withinitial

Polrep) Sit e Name : Midval e Sla g OU 2 (RV5 ) Cemeter y 

## City/County/State : ' SSW NO. CASENO.

PolrepsDist. List 1. ProgramDir., Doug Side, T. Leaders: JimKnoy, Steve Hawthorn, Luke Chavez(rotating) 2. RA, DRA, ARAships 3. ERD - HeadquartersATTN: Director (5202G) 4. Region Response TeamMembers(viafax - 19members) 5. 8OC

ATTN: Rich Lathrop 6. Legal

Depart (ENF) ATTN: 7
. OSC : PV.^-e
. 7-i^v « 

# 8
. EP S - <n^ur^c * o' f 9. Adm. RecordsCoordinator 10. State Program Director/Manager Address 11. National

Pollution Fund

Center: Y

or N 12. Ann Spencer

HQ/EPA 703/603-9116POLREPDISTRIBUTION LO G

SITE : M-idval p Sla g nu ? (RV5 ) Cemeter y

Mik eZimmerma n
Pnlrep #DateSent#of Copies



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