SDM S Documen t I D 

### 102062 1 DOCKE TNUMBER : RESPONDENT : EP AATTORNEY : ADMINISTRATIV ELA WJUDGE :

O R PRESIDIN GOFFICER : CERCLA-VIII-92-0 6 CALIFORNI AGULC HSUPERFUN D SITE , DENVE RAN D RI O GRAND EWESTER NRAILROA D

DAT EO F DOCUMEN T DESCRIPTIO NO F DOCUMEN T DAT E FILE D 11/21/9 1 ' ADMINISTRATIVE ORDE R O NCONSEN T FO R REMEDIA L INVESTIGATION / FEASIBILITY STUDY 12/03/9 1UNITE D STATE S ENVIRONMENTAL PROTECTIO NAGENC Y REGIONVII I

I NTH E MATTE R OF : CALIFORNI AGULC H SUPERFUN D SITE , DENVE R AND RI O GRAND E WESTER N RAILROAD ; RESPONDENT . PROCEEDIN

G UNDE R SECTIONS 104 , 12 2 (a) , AN

D 12 2 (d ) (3 ) OF THE COMPREHENSIV

E ENVIRONMENTAL RESPONSE , COMPENSATIO NAN D LIABILIT

Y ACT , A S AMENDE D (4 2 U.S.C . § § 9604 , 962 2 (a ) , AN D 9622(d ) (3) ) . / ^ ' * " CERCLA-VIII-^i-?- ?

ADMINISTRATIV

E ORDE R ONCONSEN T FOR REMEDIAL INVESTIGATION/FEASIBILIT Y STUD

Y [Operabl e Uni t fo r Slag ]TABL E O F CONTENT S

Pag e

I . INTRODUCTIO

N1 II . JURISDICTIO

N1 III . PARTIE S BOUN D 2 IV . DEFINITIONS 3 V . STATEMEN

T O F PURPOS E 5 VI . FINDING S O F FAC T 5 VII . CONCLUSION S O F LA W 1 0 VIII . NOTIC E TO STAT E 1 1 IX . WOR K T O B E PERFORME D 1 2 X . MODIFICATIO

NO F TH E WOR K PLA N1 6 XI . QUALIT

Y ASSURANC E 1 8 XII . FINA

L RI/FS , PROPOSE D PLAN , PUBLI C COMMENT , RECORD O F DECISION , ADMINISTRATIV E RECOR D 1 8 XIII . PROGRES S REPORT S AN D MEETING S 1 9 XIV . ACCESS , SAMPLING , AN D AVAILABILIT

Y O F INFORMATIO

N2 1 XV . PROJEC T COORDINATOR S 2 6 XVI . OTHE R APPLICABL E LAW S 2 8 XVII . RECORD PRESERVATIO N2 8 XVIII . DISPUTE RESOLUTIO N2 9 XIX . STIPULATE D PENALITIE S 3 1 XX . FORC E MAJEUR E 3 4XXI . REIMBURSEMEN T O F RESPONS E COST S 3( 5 XXII . RESERVATIONO F RIGHT S 4 0 XXIII . DISCLAIMER S 4 0 XXIV . OTHE R CLAIM S 4 1 XXV . FINANCIAL ASSURANCE , INSURANCE , AN D INDEMNIFICATIO

N4 2 XXVI . EFFECTIV

E DAT E AN

D SUBSEQUEN

T MODIFICATIO

N4 4 XXVII . TERMINATIO NAN D SATISFACTIO

N4 5 XXVIII . RELEAS E AN D CONTRIBUTIO

NPROTECTIO

N4 6 XXIX . SIGNATORIE S 4 6I . INTRODUCTIO N 1 . Thi s Administrativ e Orde r on Consen t (Order ) i s entere d int o voluntaril yb yth e Unite d State s Environmenta l Protection Agenc y(EPA ) an d Denve r an

d Ri o Grand e Western Railroa d Compan

y(Respondent) . Thi s Orde r concern s th e performanc e o f a remedia l investigation/feasibilit ystud y (RI/FS ) o n lea d sla g pile s i n th e Californi a Gulc h Superfund sit e (Site) , an

d performanc e o f specifie d studie s o n on e zin c sla g pile , i n Leadvill e b yRespondent . II . JURISDICTIO

N 2 . Thi s Orde r i s issued unde r th e authorit yveste d i n th e Presiden t o f th e Unite d State s b ysection s 104 , 122(a) , and 122(d)(3 ) o f th e Comprehensiv e Environmenta l Response , Compensation , and Liabilit yAc t o f 1980 , 4 2 U.S.C . § § 9604 , 9622(a) , an

d 9622(d)(3 ) (1982) , a s amende d b yth e Superfun

d Amendment s an

d Reauthorizatio n Ac t o f 1986 , Pub . L . No . 99-499 , 10 0 Stat . 161 3 (1986 ) (CERCLA) . Thi s authorit y wa s delegate d t o th e Administrato r o f EPAo n Januar y23 , 1987 , b yExecutiv e Orde r 12,580 , 5 2 Fed . Reg . 2,92 3 (1987) , an d furthe r delegate d t o Regiona l Administrator s o n Septembe r 13 , 1987 , b yEPADelegatio n No . 14-14-C . Thi s authorit yha s bee n furthe r delegate d t o th e Directo r o f th e Hazardou s Wast e Managemen t Division .

3 . Responden t agree s t o undertak e al l action s require d b

ythi s Order . I n an yactio n b

yEPAo r th e Unite dState s t o enforc e term s o f thi s Order , Responden t consent s t o

an d agree s no t t o contes t th e authorit yo r jurisdictio n o f EPA t o issue o r enforc e thi s Order , an d agree s no t t o contes t th e validit yo f thi s Orde r o r it s terms . III . PARTIE S BOUN D 4 . Thi s Orde r shal l appl yt o and b e bindin g upo n EPAand shal l b e bindin g upo n Responden t and it s agents , successor s an

d assigns . Responden t i s responsibl e fo r carrying ou t al l action s require d b ythi s Order . No chang e i n th e ownershi p o r corporat e o r othe r lega l statu s o f Responden t o r o f th e facilit yo r site , including bu t no t limite d to , an y transfe r o f asset s o r rea l o r persona l propert yshal l alte r Respondent' s responsibilitie s unde r thi s Order .

5 . Responden t shal l provid e a cop yo f thi s Orde r t o al l contractors , subcontractors , laboratories , an d consultant s retaine d t o conduc t an yWor k unde r thi s Order , withi n 1 4 day s afte r th e effectiv e dat e o f thi s Orde r o r a t leas t 7 day s befor e retaining thei r services , whicheve r i s later . Responden t shal l conditio n an ysuc h contract s upo n satisfactor

ycomplianc e wit h thi s Order . Notwithstanding th e terms o f an

ycontract , Responden t i s responsibl e fo r complianc e wit h thi s Orde r an d fo r ensuring tha t it s subsidiaries , employees , contractors , consultants , subcontractors , an d agent s compl ywit h thi s Order .IV . DEFINITION S 6 . Unles s otherwis e expressl yprovide d herein , term s used i n thi s Orde r whic h ar e define d i n CERCL Ao r i n regulation s promulgate d unde r CERCLAshal l hav e th e meanin g assigne d t o themi n CERCL Ao r such regulations . Fo r purpose s o f thi s Order , th e following term s shal l hav e th e meaning s se t fort h below .

"Contractor " mean s an yperson , including th e contractors , subcontractors , o r agents , retaine d o r hire d b

yResponden t t o undertak e an yWor k unde r thi s Order . "Day " mean s calenda r day , unles s otherwis e specified . I n computing an

yperio d o f tim e unde r thi s Order , wher e th e las t daywoul d fal l o n a Saturday , Sunda y o r Federa l holiday , th e perio d shal l ru n unti l th e clos e o f busines s o n th e nex t working day . "Deliverable " mean s an ywritte n product , including , bu t no t limite d to , technica l reports , dat a reports , technica l memoranda , progres s reports , o r othe r document s describing th e Wor k performe d o r t o b e performed , tha t Responden t i s require d t o submi t unde r th e terms o f thi s Order . "NCP " mean s the Nationa l Oi l an d Hazardou s Substance s Pollutio n ContingencyPlan promulgate d unde r section 10 5 o f CERCLA , 4 2 U.S.C . § 9605 , an d codifie da t 4 0 C.F.R . Par t 300 , including , bu t no t limite d to , an yamendment s thereto . "Order " mean s thi s Order , th e exhibit s attache d t o thi s Order , an

d al l document s o r modification s t o document s incorporate d int o thi s Orde r according t o the procedure s se t fort hherein . "Site " mean s th e Californi a Gulc hSuperfun d site , including th e area l exten t o f contaminatio n and al l suitabl e area s i n veryclos e proximit yo f th e contaminatio n necessar yfo r implementatio n o f th e respons e action . "Work " mean s al l task s Responden t i s require d t o perfor munde r thi s Order . "Wor k Plan " mean s th e detaile d wor k pla n implementin g th e requirement s o f thi s Order . Th e Wor k Pla n include s th e Wor k Pla n itself , whic hi s attache d heret o a s Exhibi t 1 , th e samplin g an d analysi s plan , an d an yothe r plan s o r modification s theret o approve d b yEPApursuan t t o thi s Order . "Slag " mean s sla g fro mth e primaryprocessing o f lea d ore . "Zin c Slag " mean s slag fro mthe primaryprocessin g o f zin c ore . Al l othe r terms no t otherwis e define d herei n shal l hav e bee n ordinar ymeaning unles s define d i n CERCL Ao r th e NCP , i n whic h cas e CERCL

Ao r NC P definition s shal l control .

### V . STATEMEN T O F PURPOS E 7 . Thi s Orde r i s intende d t o b e th e firs t step o f a three-step settlemen t proces s t o settl e completel yal l liabilit yo f Responden t t o th e Unite d States . Thi s step involve s th e conduct , wit hEPAoversight , o f a n RI/F S consisten t wit hCERCL Aan d th e NC P t o asses s Sla g pile s a t th e Sit e an d evaluat e alternative s t o th e exten t necessar yt o selec t a remedy , i f appropriate . Responden t wil l als o conduc t specifie d studie s o n on e Zin c Sla g pile . Th e partie s inten d fo r th e secon

d ste p t o b e a partia l consen t decre e fo r paymen t o f Denve r an

d Ri o Grande' s shar e o f pas t respons e cost s incurred b

yth e Unite d States . Th e thir d step wil l b e a fina l consen t decre e settin g fort ha complet e settlemen t o f th e cas e betwee n th e Unite d State s an d Respondent . 8 . The activitie s conducte d unde r thi s Orde r ar e subjec t t o approva l b yEPAand mus t b e sufficien t t o provid e (a ) al l necessar

yinformatio n fo r the RI/F S fo r Sla g pile s an d a record o f decisio n fo r th e Sla g pile s tha t i s consisten t wit hCERCLAan

d the NCP , an

d (b ) the informatio n require d fo r th e Zin c Sla g pile . Th e Work unde r thi s Orde r shal l b e conducte d i n complianc e wit hCERCLA , th e NCP , an d al l applicabl e EPAguidance , policies , an d procedures . VI . FINDINGS O F FAC T Sit e Description an d Histor

y 9 . Pursuan t t o section 10 5 o f CERCLA , 4 2 U.S.C . § 9605 , EPAplace d th e sit e o n th e Nationa l Prioritie s Lis t

### se t fort ha t 4 0 C.F.R . Par t 300 , Appendi x B , b ypublicatio n i n the Federa l Registe r on Septembe r 8 , 198 3 (4 8 Fed . Reg . 40,658 , 40,670) .

10 . Denve r and Ri o Grand e Western Railroa d Compan y (Respondent ) i s a Delawar e Corporation wit hit s principa l plac e o f busines s i n Denver , Colorado . Th e Sit e contain s Sla g piles , compose d primaril yo f calcium , magnesium , iron , and silica , wit hresidua l heav ymetals . Slag i s a mineralize d byproduc t resulting fromth e refinemen t o f ore s i n blas t o r reverbatoryfurnace s fo r th e recoveryo f non-ferrou s metals . Responden t own s thre e slag pile s a t th e Site . Th e Sit e als o contain s a t leas t on e Zin c Sla g pile . Releas e o r Threatene d Releas e

11 . EP Aha s conducte d two studie s o f Slag . First , CH M Hil l conducte d samplin g an d analyse s o f Sla g i n 1986 . Thos e activitie s wer e describe d i n the Phas e I I Californi a Gulc hRemedia l Investigation , date d 1989 , whic hstated that , whil e min e wast e pile s typicall ycontai n th e highes t concentration s o f arsenic , cadmium , copper , manganese , and lead , Sla g typicall ycontain s th e highes t level s o f iro n an d zinc . Sla g wa s als o show n t o contai n othe r metals , sucha s manganese , lead , coppe r an d arsenic . The repor t note s tha t becaus e Slag s wer e generall ya soli d mas s wit ha lo wsurfac e are a t o volum e ratio , the ywoul d hav e mor e limite d solubilit y than othe r min e wastes . Thre e type s o f leachin g test s wer econducte d o n th e Slag : ASTM-modifie d aci d shak e extraction ,

AST M wate r shake extraction , an d E P toxicity . Leachin g test s showe d tha t lea d exceede d th e RCR Acriterio n o f 10 0 time s th e drinking wate r standard fo r two o f th e thre e piles .

Second , Jacob s Engineerin g performe d a roun d o f sampling an

d analysi s i n Ma

y1989 . I t analyze d on e Sla g pil e using the thre e leaching tests . Thos e test s performe d unde r th e sampling an

d analysi s pla n showe d tha t non e o f th e contaminant s o f concern leache d fromSla g i n concentration s exceeding th e RCR

Acriterio n o f 10 0 time s th e drinking wate r standard . Jacob s als o performe d a n acid-bas e accounting showin g tha t some sample s hav e th e potentia l t o generat e acid , althoughother s d o no t hav e thi s potential . Dat a fromspli t sample s showed tha t non e o f th e sample s had thi s potential .

12 . EPAha s determine d tha t th e Sit e release s o r ha s th e potentia l t o releas e variou s metals , including arsenic , cadmium , copper , lead an d zin c a s follows : Soil s i n th e are a ar e predominantl yo f th e Bross , Leadville , Pierian , an d Troutvill e series . Based on aeria l photographreviews , approximatel yfive percen t o f thes e soil s hav e bee n covere d b yminin g o r processing wastes . I n an d alon g the Californi a Gulch , place r mining , hydrauli c mining , an d earl ymillin g practice s resulte d i n significan t alteratio n o f the surfac e material s an d structure . Littl e i s know n abou t the geochemistr

yo f sit e soil s prio r t o thes e type s o f mining activities .

### Surfac e water . Th e sit e i s draine d b ysevera l gulche s tributar

yt o th e Arkansa s River , including : Evans , Stra yHorse , Pawnee , Airport , Georgia , Oregon , an d Malta . Thes e gulche s flowmostl yi n respons e t o precipitatio n event s an d snowmelt , an

d i n som

e the flowi s intermittent . Perennia l discharg e i s als o receive d fro mth e Yak Tunne l an

d th e Leadvill e Sewag e Treatmen t Plant . Surfac e wate r act s a s th e primarytranspor t mechanis mfo r bot hsolubl e metal s and metal

lade n sediment s fro

mth e site , whic heventuall yreac hth e Arkansa s River . Wate r chemistr yfromvariou s point s withi n the sit e i s simila r i n majo r catio n an d anio n concentratio n excep t belo wth e sewag e treatmen t plant . Maximu m concentratio n limit s (MCLs ) fo r cadmium , lead , manganese , sulfat e an

d tota l dissolve d solid s (TDS ) ar e routinel y exceeded i n numerou s locations . Mas s loading analysi s o f variou s strea

msegment s show s tha t lea d load s ar e no t influence d b

yth e Ya k Tunnel , bu t ar e influence d b yStra y Hors e Gulc han

d area s o f th e middl e Californi a Gulch . Cadmimum , sulfate , zinc , an d manganes e load s ar e primaril y fro mthe Yak Tunnel , wit hlesse r quantitie s fro mStra yHors e Gulc han

d uppe r an

d middl e Californi a Gulch . Groun d Wate r i s foun

d i n bot hbedroc k an d alluvia l system s a t the Californi a Gulc hsite , an d recharg e i s principall yfro

minfiltration , precipitation , an d surfac e wate r drainage . Groun d wate r i n uppe r Californi a Gulchoccur s



### 8primaril yi n th e bedroc k formation s including granite ,

limestone , porphyry , an d sandstones . Variation s i n groun d wate r qualit yshowa stron g correlatio n betwee n surfac e water s an d shallowgroun

d wate r adjacen t t o Californi a Gulch . Some impac t ha s als o bee n downgradien t o f certai n min e wast e piles , thoug hqualit yi s affecte d mor e b ydept hthan b

ylocation . Groun d wate r fro

mman ywell s i n th e sit e ha s bee n show n t o excee d th e MC L fo r cadmium , and fromsome well s ha s exceede d th e MCL s fo r arsenic , zinc , and othe r metals .

Strea msediment . Uncontrolle d min e waste s fro mearl y millin g operation s i n uppe r Californi a Gulc hprobabl yadde d sediment s t o th e lowe r Gulch . Th e sediment s hav e bee n show n t o contai n oxy-hydride s o f iron , aluminum , an d manganes e tha t

" i precipitat e ou t o f the surfac e wate r during lowflows . Thes e sediment s ca n b e re-entraine d during snowmel t and highe r strea mvelocities . On e sedimen t sampl e collecte d during EPA' s Phas e I R I exceede d th e criterio n fo r lea d i n a n E P Toxicit y test . Ai r qualit ydat a fro mth e Stat e ha s show n tha t th e lowes t concentration s o f tota l suspende d particulate s (TSP ) occur i n th e summe r months . Th e secondar yannua l TS P standard wa s exceede d i n Leadvill e during 1981 , 1984 , an d 1985 ; however , th e primarystandard wa s no t exceede d durin g th e perio d o f monitoring (1981-1988) . The Federa l primaryambien t ai r standard fo r lead wa s no t exceede d during th e five-yea r perio d fo r whic hlead analysi s wa s performed .Flor a an d fauna . Littl e i s know n abou t th e terrestria l fauna withi n th e sit e boundaries , bu t studie s hav e show n tha t th e Californi a Gulc hsupport s n o fis han d onl y limite d specie s o f aquati c invertebrates . Thos e macroinvertebrat e specie s tha t ar e sensitive t o lowe r wate r qualit yar e no t foun d jus t downstrea

mo f the confluenc e o f the Californi a Gulc han d th e Arkansa s River . Diversit yo f invertebrate s an

d vertebrate s i s als o decrease d immediatel y downstrea

mo f th e confluence . Plan t cove r and forag e productio n ha s bee n reduce d i n th e Arkansa s Rive r valle ynea r th e confluenc e o f th e Californi a Gulc hand th e Arkansa s River . Previou s studie s hav e show n toxi c meta l concentration s i n plan t tissues .

Th e Sla g pile s a t th e Sit e nee d t o b e studie d t o evaluat e whethe r metal s ca n b e release d t o nearb ysurfac e and vados e soils , groundwate r o r surfac e water . Transpor t pathway s tha t nee d t o b e assessed includ e wind dispersion , infiltration , surfac e wate r runof f an d reworkin

g o f th e surfaces .

VII . CONCLUSIONS O F LA W AN D DETERMINATIONS 13 . The sit e i s a "facility " a s define d i n section 101(9 ) o f CERCLA , 4 2 U.S.C . § 9601(9) .

14 . Variou s metal s foun d a t the Sit e ar e "hazardou s substances " a s define d i n section 101(14 ) o f CERCLA , 4 2 U.S.C . § 9601(14) , o r constitut e "an ypollutan t o r contaminant " tha t



### 1 0ma

ypresen t an imminen t an d substantia l dange r t o publi c healt h o r welfar e unde r section 104(a)(l ) o f CERCLA , 4 2 U.S.C . § 9604(a)(1) .

15 . EPAha s determine d tha t th e past , present , o r potentia l futur e migratio n o f hazardou s substance s describe d i n thi s Orde r constitute s an actua l and/o r threatene d "release " a s define d i n sectio n 101(22 ) o f CERCLA , 4 2 U.S.C . § 9601(22) .

16 . Responden t i s a perso n a s define d i n section 101(21 ) o f CERCLA , 4 2 U.S.C . § 9601(21) .

17 . EPAha s determine d tha t Responden t i s a responsibl e partyunde r sections 104 , 107 , an d 12 2 o f CERCLA , 4 2 U.S.C . § § 9604 , 9607 , and 9622 .

18 . EP Aha s determine d tha t the action s require d b y thi s Orde r ar e necessar yt o protec t th e publi c healt ho r welfar e o r th e environmen t an d ar e consisten t wit hCERCLAan d th e NCP . VIII . NOTIC E TO STAT E

19 . B yproviding a cop

yo f thi s Orde r t o th e Stat e o f Colorado , EP

Aha s notifie d the Stat e tha t thi s Orde r i s bein g issue d an d tha t EP

Ai s the lea

d agenc yfo r coordinating , overseeing , an

d enforcing th e respons e actio n require d b yth e Order . EP

Awil l provid e fo r stat e involvemen t wit h developmen t o f the RI/F S i n accordanc e wit hsection 121(f ) o f CERCLA , 4 2 U.S.C . § 9621(f) .

1 120 . An ydocument , notice , material , o r deliverabl e whic h Responden t i s require d unde r thi s Orde r t o submi t t o EPA , shal l als o be submitted b yResponden t t o the State . 21 . The Stat e an

d it s authorize d representative s shal l b e provide d th e same right s o f acces s t o area s t o whic h thi s Orde r applie s a s i s provide d fo r EPAi n Sectio n XIV . IX . WOR KT O B E PERFORME D 22 . Responden t shal l conduc t activitie s and submi t deliverable s a s provide d b ythi s Orde r and th e attache d Wor k Plan , whic h i s incorporate d b yreference . Al l Wor k performe d i s t o b e conducte d i n accordanc e wit h th e schedules , standards , specifications , an d othe r requirement s o f thi s Order , and Wor k Pla n prepare d hereunder , a s initiall yapprove d o r modifie d b

yEPA , an

d a s ma

yb e amende d o r modifie d b yEPA fro mtim e t o time i n accordanc e wit h thi s Order . 23 . Al l Wor k performe d unde r thi s Orde r shal l b e don e unde r th e directio n an d supervisio n o f qualifie d personnel . Responden t ha s provide d th e nam e o f th e contractor , Morrison-Knudse n Corporation , whic h shal l b e use d t o carr you t the Work . EP Aapprove s the us e o f thi s contractor . Withi n 3 0 day s o f th e effectiv e dat e o f thi s Order , an

d befor e work begins , Responden t shal l notif yEPAi n writin g o f the names , titles , an d qualification s o f othe r personnel , including contractors , subcontractors , consultant s an d laboratories , t o be use d i n carryin g ou t such work .



### 1 2During th e cours e o f th e Work , Responden t shal l notif yEPAi n

writing 7 day s i n advanc e o f an ychange s o r addition s i n th e personne l use d t o carr you t suchWork , providin g thei r names , titles , an

d qualifications . EPAshal l hav e th e same righ t t o approv e change s an d addition s t o personne l a s i t ha s hereunde r regarding th e initia l notification .

24 . Whil e awaiting EPAapprova l fo r an ydeliverabl e Responden t shal l procee d wit hal l othe r task s an d activitie s whic hmayb e conducte d independentl yo f suchdeliverable , i n accordanc e wit hth e schedul e se t fort hi n thi s Order . EPA reserve s th e righ t t o stop Responden t fro mproceedin g further , subjec t t o disput e resolution , eithe r temporaril yo r permanently , o n an ytask , activity , o r deliverabl e a t an y poin t during th e RI/FS .

25 . EPAreserve s th e righ t t o commen t on , modify , an d direc t change s consisten t wit hth e Wor k Plan fo r al l deliverables , subjec t t o disput e resolution . Whe n EPA comment s o n o r direct s change s t o deliverables , th e following procedure s shal l apply :

(a ) Responden t mus t full ycorrec t al l deficiencie s an

d incorporat e an

d integrat e al l informatio n an d comments , a s directe d b yEPA , withi n fourtee n (14 ) day s o f receip t o f EPAcomments , unles s otherwis e specifie d i n an y schedul e i n th e Wor k Pla n approve d hereunder , otherwis e agree d t o b ythe parties , o r a s specifie d i n paragrap h(b) .



### 1 3

### (b ) Responden t ma yrequest , an

d EP Ashal l grant , a meeting t o discus s an ycomment s o r instruction s fro m EPA , prio r t o resubmitting th e deliverable . I f EPA , i n consultation wit hthe Stat e o f Colorado , agree s tha t it s comment s o r instruction s ar e incorrec t o r shoul d b e modified , Responden t mayresubmi t th e deliverabl e i n accordanc e wit h EPA' s decisio n withi n 1 4 day s afte r receip t o f the decision .

(c ) At the tim e an

yrevise d deliverabl e i s submitted , Responden t shal l submi t a cove r lette r describing ho weac hsubstantive EPAcommen t wa s addressed , and a descriptio n o f an

yadditiona l substantive change s o r addition s i n th e resubmitta l along wit ha justificatio n fo r thos e change s o r additions . Th e cove r lette r shal l als o includ e a certificatio n tha t n o substantive change s othe r than thos e identifie d i n th e cove r lette r wer e made . Failur e t o addres s EPAcomment s o r direction s a s describe d i n thi s paragraph , o r failur e t o identif yadditiona l substantiv e change s o r addition s i s a violatio n o f thi s Order .

(d ) I f Responden t disagree s wit hthe substantive change s required b yEPA , Responden t mayinclud e a disclaime r i n the cove r lette r identifying the portion(s ) o f suchdocument s wit hwhic hth e Responden t disagree s an d th e reason s fo r the disagreement . Wheneve r an d t o whomeve r the documen t i s disseminated , EP Awil l includ e suc

hcove r lette r wit hth e deliverable . Suchcove r lette r shal l b e include d i n

1 4th e Administrativ e Recor d fo r th e Sit e a s provide d unde r

Section XII .

26 . I f Responden t fail s t o compl ywit hthe preceding paragraph , EPAretain s th e right , subjec t t o disput e resolution , t o seek stipulate d o r statutor ypenalties , perfor m it s ow n studies , o r complet e o r modif yth e deliverabl e o r an y portio n thereo f an d seek reimbursemen t fro mResponden t fo r it s costs . T o the exten t tha t EPAconduct s o r take s ove r som e o f th e Work , Responden t shal l incorporat e an d integrat e informatio n supplie d b yEPAint o an

yrepor t o n suchWork . 27 . Neithe r failur e o f EPAt o expressl yapprov e o r disapprov e o f Respondent' s submission s withi n the specifie d tim e periods , no r th e absenc e o f comments , shal l b e construe d a s approva l b

yEPA . Whethe r o r no t EPAgive s expres s approva l fo r Respondent' s deliverables , Responden t i s responsibl e fo r preparing deliverable s acceptabl e t o EPA .

28 . I n the even t EP Adetermine s tha t Responden t ha s faile d t o implemen t an yprovision s o f th e Wor k i n an adequat e o r timel ymanner , EPAma yperfor

man yan d al l portion s o f th e Work a s EPAdetermine s necessary . Responden t ma yinvok e th e procedure s se t forth i n Sectio n XVII I (Disput e Resolution ) t o disput e EPA' s determinatio n tha t the Responden t faile d t o implemen t a provisio n o f th e Work i n an adequat e o r timel y manne r a s arbitrar yan d capriciou s o r otherwis e no t i n accordanc e wit h law . Suchdisput e shal l b e resolve d o n th e



### 1 5administrativ e record . Cost s incurre d b yth e Unite d State s i n performing th e Wor k pursuan t t o thi s Paragrap hshal l b e considere d Futur e Respons e Cost s tha t Responden t shal l pa y pursuan t t o Sectio n XX I (Reimbursemen t o f Respons e Costs) .

X . MODIFICATIO

NO F TH E WOR K PLA

N 29 . If , a t an

ytime during the RI/F S process , Responden t identifie s a nee d fo r additiona l data , Responden t shal l submi t a memorandu mdocumentin g th e nee d fo r additiona l dat a t o th e EPAProjec t Coordinato r withi n 2 1 day s o f such identification . EPA , i n it s discretion , wil l determin e whethe r th e additiona l dat a wil l b e incorporate d int o deliverables . I n an yevent , Responden t retain s th e righ t t o collec t such dat a an d submi t i t fo r inclusio n i n th e administrativ e record .

30 . I n the even t o f unanticipate d o r change d circumstance s a t th e site , Responden t shal l notif yth e EPA Projec t Coordinato r b ytelephon e a t 293-164 9 o f the unanticipate d o r change d circumstance s b yth e en

d o f th e nex t busines s da

yafte r the discovery . I f the unanticipate d o r change d circumstance s pos e an immediat e threa t t o huma n healt h o r welfar e o r th e environment , Responden t shal l cal l th e EPA Projec t Coordinato r a t 293-164 9 or , i f o n a weekend , an d th e Projec t Coordinato r i s no t i n hi s office , a t the Projec t Coordinator' s hom e a t 766-093 5 immediately . I f EP Adetermine s tha t th e immediat e threa t o r th e unanticipate d change d



### 1 6circumstance s warran t change s i n th e Wor k t o b e performed , EPA

maymodif yo r amend th e wor k pla n consisten t wit hth e purpos e o f thi s Orde r accordingl yo r tak e othe r action s authorize d b y CERCL Ao r th e NCP . Responden t shal l performth e wor k a s modifie d o r amended . Thi s paragrap hi s subjec t t o disput e resolution .

31 . EPAma

ydetermin e tha t work i n additio n t o task s identifie d i n th e approve d wor k pla n mayb e necessar yt o accomplis hth e purpose s o f th e RI/F S fo r Sla g pile s a s se t fort h i n Sectio n V o f thi s Order . EPAma yreques t tha t th e Responden t performsuch a complet e RI/F S fo r Slag , b ysettin

g fort h i n writing th e basi s an d reason s fo r EPA' s determinatio n tha t additiona l wor k i s necessary . EPAwil l no t reques t o r requir e tha t additiona l wor k b e performe d fo r th e Zin c Sla g pil e o r an

yothe r Zin c Sla g piles . Responden t shal l hav e th e opportunit yt o mee t wit h EPAwithi n fiv e (5 ) busines s day s o f Respondent' s receip t o f EPA' s reques t fo r additiona l work t o discus s th e additiona l work EPAha s requeste d an d t o propos e alternatives . Responden t shal l eithe r confir mit s willingnes s t o perfor

mthe additiona l wor k i n writin

g t o EP

Awithi n 1 0 day s o f receip t o f the EP Areques t o r invok e disput e resolution .

32 . Arefusa l b

yResponden t t o undertak e th e additiona l work no t withi n the scop e o f the Wor k Plan shal l no t constitut e a violatio n o f thi s Order . Th e decisio n a s t o



### 1 7whethe r additiona l work i s withi n th e scop e o f th e Wor k Pla n

i s subjec t t o disput e resolution .

33 . I f the additiona l wor k i s withi n the scop e o f th e wor k plan , subjec t t o disput e resolution , Responden t shal l implemen t th e additiona l task s whic h EPAdetermine s ar e necessary . Th e additiona l wor k shal l b e complete d according t o the standards , specifications , an d schedul e se t fort h o r approve d b

yEPAi n a writte n modificatio n t o th e wor k pla n o r writte n work pla n supplement . EPAreserve s th e right , subjec t t o disput e resolution , t o conduc t the work itsel f a t an y point , an

d t o seek reimbursemen t fro mRespondent . XI . QUALIT YASSURANC E 34 . Responden t shal l us e qualit yassurance , qualit y control , an

d chain-of-custod

yprocedure s a s require d b yth e Wor k Plan .

XII . FINA L RI/F8 . PROPOSE DPLAN . PUBLI C COMMENT , RECOR DO F DECISION . ADMINISTRATIV E RECOR D 35 . EPAi s responsibl e fo r th e releas e t o th e publi c o f th e RI/F S repor t fo r Sla g an d th e preparatio n an d releas e t o th e publi c o f th e propose d pla n an d record o f decisio n fo r Sla g i n accordanc e wit h CERCL Aan d th e NCP . Responden t shal l prepar e a draf t R I report , and a draf t F S repor t fo r lea d Slag . The schedul e fo r thes e draft s an d EP Acomment s on the draft s shal l b e include d i n th e Wor k Plan .



### 1 836 . EPAshal l provid e Responden t wit h a cop yo f th e fina l RI/F S report , propose d pla n an d record o f decisio n fo r Slag . 37 . EPAwil l determin e th e content s o f th e administrativ e record fil e fo r selectio n o f th e remedia l actio n fo r Slag . Upo n EP Areques t o r a t it s option , Responden t shal l submi t t o EPAnonprivilege d document s develope d during th e cours e o f th e RI/F S upo n whic h selectio n o f th e respons e actio n mayb e based . Upo n EPAreques t o r a t it s option , Responden t shal l provid e copie s o f plans , tas k memorand a (includin g documentatio n o f fiel d modifications) , recommendation s fo r furthe r action , qualit yassuranc e memorand a an

d audits , rawdata , fiel d notes , laborator y analytica l report s an d othe r nonprivilege d reports . XIII . PROGRES S REPORT S ANDMEETING S 38 . Durin

g the cours e o f work unde r thi s Order , Responden t shal l submi t th e following report s t o EPA :

(a ) Monthl yProgres s Reports . Responden t shal l prepar e monthl yprogres s report s containing th e following information : 1 . Action s take n t o compl ywit h thi s Order , including plan s an d action s complete d during th e preceding month ; 

### 2 . Activitie s during the preceding mont h tha t deviate d fro

mo r wer e carrie d ou t i n additio n t o thos e planned ; 1 93 . Al l problem s encountere d an d an y anticipate d problems , an yactua l o r anticipate d delays , an d solution s develope d an d implemente d t o addres s an yactua l o r anticipate d problem s o r delays ; 4 . Wor k planne d fo r the nex t two month s wit hschedule s relating suchwork t o th e overal l project ; an d 5 . Al l result s o f sampling an d test s an

d al l othe r dat a collecte d o r receive d b yRespondent . Responden t shal l submi t thes e report s t o EPAo n o r befor e th e 7t hda yo f eac h mont h during whic hthi s Orde r i s i n effect .

(b ) Fina l Report . Responden t shal l submi t a fina l repor t documenting th e work performe d unde r thi s Orde r withi n 3 0 day s o f completio n o f th e RI/FS .

39 . Responden t shal l mak e presentation s a t an d participat e i n meeting s a t th e reques t an d afte r reasonabl e notic e o f EPAduring th e initiation , conduc t an d completio n o f the RI/FS . I n additio n t o discussio n o f the technica l aspect s o f th e RI/FS , topic s ma yinclud e anticipate d problem s o r ne w issues . Meeting s wil l b e schedule d a t EPA' s discretio n during norma l busines s hours .

40 . EP Ai s responsibl e fo r conducting communit y relation s wit h respec t t o the site . Responden t shal l cooperat e wit h EPAi n providin g informatio n regarding implementatio n o f thi s Orde r t o th e public . I f requeste d b y EPA , Responden t shal l participat e i n th e preparatio n o f such



### 2 0informatio n fo r disseminatio n t o th e publi c an d i n publi c meeting s whic h mayb e hel d o r sponsore d b yEPAt o explai n activitie s a t o r relating t o the site . XIV . ACCESS . SAMPLING , ANDAVAILABILIT YO F INFORMATION

41 . Upo n reasonabl e notic e t o Respondent , EPAan d it s authorize d representative s ma yente r an

d freel ymov e abou t al l propert ya t th e sit e an d off-sit e area s wher e Work , i f any , i s bein g performed , fo r th e purpose s o f inspecting conditions , activities , the result s o f activities , records , operating logs , an d contract s relate d t o th e Sit e o r Responden t an

d it s contractor(s ) pursuan t t o thi s Order ; reviewing th e progres s o f Responden t i n carrying ou t th e term s o f thi s Order ; conducting test s a s EP Ao r it s authorize d representative s dee mnecessary ; usin g a camera , soun

d recording device , o r othe r recording equipment ; an d verifyin g th e dat a submitte d t o EPAb yRespondent . I f EPAan d it s authorize d representative s conduc t an ytests , including sampling , theymus t provid e a t leas t 4 8 hour s notic e t o Respondent . Responden t shal l allo wthes e person s t o inspec t an d cop yal l non-privilege d records , files , photographs , documents , sampling an d monitoring data , an d othe r writing s relate d t o work undertake n i n carryin g ou t thi s Order . Nothing herei n shal l b e interprete d a s limiting o r affecting an yEP Arepresentative' s right o f entr yo r inspection authorityunde r federa l law .



### 2 142 . I f fo r prope r performanc e o f the Work , i t i s

necessar

yt o ente r propert yowne d i n whol e o r i n par t b y partie s othe r tha n thos e bound b ythi s Order , Responden t wil l obtain , o r us e it s bes t effort s t o obtain , sit e acces s agreement s fro

mth e owne r 1 5 day s prio r t o th e tim e such acces s i s needed . Suchagreement s shal l provid e acces s fo r EPA , it s contractors , an d oversigh t officials , th e Stat e o f Colorad o an

d it s contractors , an d th e Responden t o r it s authorize d representatives . Suc hagreement s shal l specif y tha t Responden t i s no t EPA' s representative s wit hrespec t t o liabilit yassociate d wit hsit e activities . Copie s o f such agreement s shal l b e provide d t o EPAprio r t o Respondent' s initiatio n o f fiel d activities . Th e request s fo r sit e acces s date d Augus t 2 , 1991 , ar e deeme d acceptabl e t o EPAunde r thi s paragraph .

43 . I f acces s agreement s ar e no t obtaine d withi n the time reference d above , Responden t shal l promptl ynotif yEPAo f it s failur e t o obtai n access . EPAma yobtai n acces s fo r the Respondent , perfor mthos e task s o r activitie s wit hEPA contractors , o r terminat e the Orde r i n the even t tha t Responden t canno t obtai n acces s agreements . I n the even t tha t EPAperform s thos e task s o r activitie s wit hEPAcontractor s an d doe s no t terminat e the Order , Responden t shal l perfor mal l othe r activitie s no t requirin g acces s t o tha t site , an d shal l reimburs e EP

Afo r al l cost s incurred tha t ar e no t inconsisten t



### 2 2wit h th e NC P i n performing suchactivities . Responden t

additionall yshal l integrat e the result s o f an ysuc htask s undertake n b

yEPAint o it s report s an d deliverables . Responden t shal l reimburs e EPAfo r al l cost s an d attorney s fee s no t inconsistent wit hthe NC P incurred b ythe United State s i n obtaining acces s fo r the Responden t i n accordanc e wit h Section XX I o f thi s Order .

44 . Al l result s o f sampling , o r othe r dat a (includin

g rawdata ) generate d b yRespondent , o r o n Respondent' s behalf , during implementatio n o f thi s Order , shal l b e submitte d t o EPAi n th e monthl yprogres s repor t a s describe d i n Sectio n XII I o f thi s Order . The statu s o f modellin g an

d ongoing test s wil l als o b e describe d i n thi s report . EPAwil l mak e availabl e t o th e Responden t validate d dat a generate d b

yEPAunles s i t i s exemp t fromdisclosur e b y an yfedera l o r stat e la wo r regulation . 45 . Responden t wil l notif yEPAi n writing a t leas t 7 day s prio r t o mobilizin g o r conducting significan t fiel d events . At the verba l o r written reques t o f EP Ao r it s authorize d representatives , Responden t shal l allowspli t o r duplicat e sample s t o b e take n b yEPAo r it s authorize d representative s o f an ysample s collected b ythe Responden t i n implementin

g thi s Order . 46 . B yenterin

g int o thi s Order , Responden t waive s an yevidentiar

yobjection s t o dat a gathered an d generated b

y



### 2 3Responden t i n th e performanc e o f th e work tha t ha s bee n

verifie d according t o EPAapprove d qualif yassurance/quality contro l procedures . I f Responden t object s t o an yothe r data , relating t o th e RI/FS , Responden t shal l submi t t o EPAa repor t tha t identifie s an d explain s it s objections , describe s the acceptabl e use s o f th e data , i f any , an d identifie s an

y limitation s t o th e us e o f th e data . Th e repor t mus t b e submitte d t o EPAwithi n 3 0 day s o f th e monthl yprogres s repor t containing th e dat a o r withi n 3 0 day s o f receip t o f th e dat a fro mEPA , whicheve r i s applicable . 47 . Responden t shal l provid e t o EPA , upo n request , copie s o f al l nonprivilege d document s an d informatio n withi n it s possessio n o r contro l o r tha t o f it s contractor s o r agent s relatin g t o the implementation o f thi s Order , including , bu t no t limite d to , sampling , analysis , chain-of-custod yrecords , manifests , truckin g logs , receipts , reports , correspondence , officia l fiel d log s o f Respondent' s on-sit e representatives , o r othe r document s o r informatio n relate d t o the Work . Responden t shal l als o mak e availabl e t o EPA , fo r purpose s o f investigation o r informatio n gathering , it s employees , agents , o r representative s wit hknowledg e o f relevan t fact s concerning th e performanc e o f th e Work .

48 . Responden t ma yasser t busines s confidentiality claim s coverin

g par t o r al l o f the document s o r informatio n submitted t o EP

Aunde r thi s Orde r t o the exten t permitte d b y



### 2 4sectio n 104(e)(7 ) o f CERCLA , 4 2 U.S.C . § 9604(e)(7) . Such

claim s shal l b e asserted i n th e manne r describe d b y4 0 C.F.R . § 2.203(b ) and substantiate d a t th e tim e th e clai mi s made . Document s o r informatio n determine d t o b e confidentia l b yEPA wil l be afforde d the protection specified i n 4 0 C.F.R . Par t 2 , Subpar t B . I f n o clai mo f confidentialit yaccompanie s document s o r informatio n whe n theyar e submitte d t o EPA , o r i f EPAha s notifie d Responden t tha t th e document s o r informatio n ar e no t confidentia l unde r th e standard s o f sectio n 104(e)(7 ) o f CERCLA , 4 2 U.S.C . § 9604(e)(7) , th e publi c mayb e give n acces s t o such document s o r informatio n withou t furthe r notic e t o Respondent .

49 . No clai mo f confidentialit yshal l b e mad e wit h respec t t o an

ydata , including , bu t no t limite d to , al l sampling , analytical , monitoring , hydrogeologic , scientific , chemical , o r engineering dat a an d material s o r informatio n submitte d pursuan t t o thi s Order , o r an yothe r document s o r informatio n evidencing condition s a t o r aroun d th e Site . 50 . During the cours e o f the Work , othe r responsibl e parties , conducting separat e bu t relate d RI/F S work , wil l b e generating data , draft s and report s tha t mus t b e coordinate d wit h Respondent' s Work . I n orde r t o facilitat e thi s coordination , al l such responsibl e partie s wil l b e ordere d t o provid e copie s o f thei r respective workplan s (includin g schedules ) t o one anothe r withi n five day s o f the effective



### 2 5dat e o f thei r respective orders , an d t o cooperat e wit h on e anothe r i n providin g acces s t o dat a an d report s tha t ar e relevan t t o on e another' s work . Accordingly , Responden t D&R G wil l provid e t o Respondent s Newmont/Resurrection , Asarco , an d Hecl a withi n fiv e day s o f th e effectiv e dat e o f thi s Orde r a t leas t on e cop

yo f Responden t D&RG' s workpla n an d schedul e fo r performanc e o f th e RI/F S Work . Responden t D&R G wil l cooperat e wit h Respondent s Newmont/Resurrection , Asarco , an d Hecl a i n it s performanc e o f th e Work , including providin g reasonabl e acces s t o dat a an d report s generate d b yResponden t D&R

G i n th e cours e o f th e Work . XV . PROJEC T COORDINATOR S 51 . EPAan

d Responden t shal l eac hdesignat e thei r ow n Projec t Coordinator .

a . The EP

AProjec t Coordinato r is : Ji mHanle y(8HWM-SR ) Remedia l Projec t Manage r EPARegio n VII I 

### 99 9 18th Street , Suit e 50 0 Denver , C O 80202-240 5 293-164 9 b . The Respondent' s Projec t Coordinato r is : Ann e P . Veige l Morrison-Knudse n Corp . 710 0 Eas t Belleview , Suit e 30 0 

### Englewood , Colorad o 8011 1 793-500 0 Th e Respondent' s Projec t Coordinato r shal l b e responsibl e fo r overseein

g th e implementatio n o f thi s Order . EPAan d



### 2 6Responden t eac h ha s th e righ t t o chang e thei r respective

Projec t Coordinator . Th e othe r part ymus t b e notifie d i n writin g o f th e name , title , addres s an d telephon e numbe r o f th e ne wProjec t Coordinato r a t leas t 7 day s prio r t o th e change . 52 . T o th e maximu mexten t possible , communication s betwee n EPAan

d Responden t shal l b e directe d t o th e Projec t Coordinator , b

ymail , wit hcopie s t o suchothe r person s a s EPA maydesignate . Communication s include , bu t ar e no t limite d to , al l documents , reports , approvals , an d othe r correspondenc e submitte d unde r thi s Order . Document s including reports , approvals , disapprovals , an d othe r correspondenc e whic h mus t b e submitte d unde r thi s Orde r shal l b e hand-delivere d o r sen t b ycertifie d mail , return receip t requested , t o the Projec t Coordinator s o r t o an yothe r person s whic h EPAo r Respondent s designat e i n writing . Document s t o b e submitte d t o EPAshal l b e sen t i n triplicate .

53 . Th e EPAProjec t Coordinato r shal l hav e th e authorityveste d i n th e Remedia l Projec t Manage r an d th e On-Scen e Coordinato r b ythe NCP . I n addition , the EPAProjec t Coordinato r shal l hav e th e authority , consisten t wit hth e NCP , t o hal t an

ywork require d b

ythi s Orde r an

d t o tak e an

y respons e action s/h e determine s i s necessar yunde r CERCL

Aan d the NCP . The absenc e o f the EP AProjec t Coordinato r fro mthe are a unde r stud

ypursuan t t o thi s Orde r shal l no t be caus e fo r the stoppag e o r dela yo r work .

2 754 . EP Ama yarrang e fo r assistanc e i n it s oversigh t an d revie wo f th e conduc t o f th e RI/FS , a s require d b y section 104(a ) o f CERCLA , 4 2 U.S.C . § 9604(a) . EPA' s authorize d representative mayobserv e wor k an d mak e inquirie s i n th e absenc e o f EPA , bu t i s no t authorize d t o modif yth e requirement s o f thi s Order .

XVI . OTHE RAPPLICABL E LAW S 55 . Al l activitie s undertake n b yResponden t shal l b e i n complianc e wit h al l Federal , Stat e an d loca l law s an

d regulations , including permi t requirements , unles s a n exemptio n i s provide d b ysectio n 121(e ) o f CERCLA , 4 2 U.S.C . § 9621(e) . Responden t shal l identif yan d obtai n al l permits , licenses , an

d approval s require d fo r performanc e o f Wor k i n sufficien t time t o perfor mWor k a s scheduled . XVII . RECOR DPRESERVATIO N 56 . Al l record s an d document s i n Respondent' s possessio n tha t relat e i n an ywa yt o th e Sit e shal l b e preserve d whil e thi s Orde r i s i n eff.ec t an d fo r a minimu

mo f 1 0 year s afte r commencemen t o f terminatio n o f thi s Order . Responden t shal l acquir e an d retai n copie s o f al l document s tha t relat e t o the Sit e an d ar e i n the possessio n o f it s employees , agents , accountants , contractor s o r attorneys . Afte r thi s 10-year period , Responden t shal l notif yEP Aa t leas t 9 0 day s befor e the document s ar e schedule d t o b e destroyed . I f EPArequest s tha t th e document s b e saved ,

2 8Responden t shall , a t n o cos t t o EPA , provid e EPAwit h non privilege d document s o r copie s o f th e documents .

57 . The Responden t ma yasser t tha t certai n documents , record s an d othe r informatio n ar e privilege d unde r th e attorney-clien t privileg e o r an yothe r privileg e recognize d b

yfedera l law . I f th e Responden t assert s such a privilege , i t shal l provid e EP Awit h the following : (1 ) the titl e o f the document , record o r information ; (2 ) the dat e o f th e document , recor d o r information ; (3 ) th e nam e an d titl e o f the autho r o f the document , record o r information ; (4 ) the name an

d titl e o f eac h addresse e an d recipient ; (5 ) a descriptio n o f th e subjec t o f th e document , recor d o r information ; an

d (6 ) the privileg e asserte d b yRespondent . XVIII . DISPUT E RESOLUTIO N 58 . An ydispute s concerning activitie s o r deliverable s require d unde r thi s Order , fo r whic h disput e resolutio n ha s bee n expressl yprovided , shal l b e resolve d a s follows : I f Responden t object s t o an yEP Anotic e o f disapprova l o r requiremen t mad e pursuan t t o thi s Order , Responden t shal l notif ythe EP AProjec t Coordinato r i n writin g o f it s objection s withi n 1 4 day s o f receip t o f the disapprova l notic e o r requirement . Respondent' s writte n objection s shal l defin e th e dispute , stat e th e basi s o f Respondent' s objection s an d b e sent certifie d mail , retur n receip t requested , t o th e EPAProjec t Coordinator . EPAan d the Responden t the n shal l



### 2 9hav e an additiona l 1 4 day s t o reachagreemen t unles s mutuall y

extende d b

yth e parties . I f requested , Mediato r Richar d Dan a ca n ac t a s a conciliato r an d ca n mak e recommendation s t o EPA withi n thi s 14-da

yperiod . I f EP

Aconcur s wit hthe position o f Respondent , Responden t shal l b e s o notifie d i n writing , an d thi s Orde r shal l b e modifie d t o includ e an ynecessar

y extension s o f time o r modification s o f work . I f EP Adoe s no t concu r wit h the position o f Respondent , Responden t ma yreques t a conferenc e wit h th e Directo r o f th e Hazardou s Wast e Managemen t Division , Regio n VIII , withi n fiv e busines s day s o f th e decision . EPA' s decision s shal l b e i n writing an d shal l be based upon , an

d no t inconsisten t wit hthe terms o f the Order , th e Wor k Plan , th e NCP , and CERCLA . Withi n fiv e busines s day s afte r meeting , EPAshal l mak e a fina l agency decisio n an

d shal l provid e writte n notificatio n o f such resolutio

n t o Respondent . 59 . Responden t shal l procee d i n accordanc e wit h EPA' s fina l decisio n regarding th e matte r i n dispute , regardles s o f whethe r Responden t agree s wit hth e decision . I f Responden t doe s no t agre e t o perfor mo r doe s no t actuall y perfor mthe work i n accordanc e wit hEPA' s fina l decision , EPA reserve s the righ t i n it s sol e discretio n t o conduc t the work itself , t o seek reimbursemen t fro mRespondent , t o seek enforcemen t o f thi s Order , t o see k stipulated penaltie s and/or t o seek an

yothe r appropriat e relief .



### 3 060 . Responden t i s no t relieve d o f it s obligation s t o

perfor man d conduc t activitie s an d submi t deliverable s o n th e schedul e se t forth i n Wor k Plan whil e a matte r i s pending i n disput e resolution , excep t a s t o work whic h i s affecte d b ythe disput e an

d excep t a s otherwis e agree d b yth e parties . Th e invocatio n o f disput e resolutio n doe s no t sta yth e accrua l o f stipulate d penaltie s unde r thi s Order . XIX . STIPULATE D PENALTIE S 61 . Fo r eac hda

ytha t Responden t fail s t o compl y wit h th e task s identifie d i n Paragraph 62 , Responden t shal l b e liabl e fo r thos e stipulate d penaltie s se t fort h i n tha t paragraph . EPAshal l provid e written notic e o f th e violatio n o r failur e t o perform . Penaltie s begi n t o accru e o n th e da y whe n performanc e i s du e an d exten

d throug

h the perio d o f correction . Penaltie s shal l no t accru e unti l afte r th e provision s o f Paragraph s 25(a ) an d (b ) ar e exhausted . Fo r the perio d o f time betwee n th e occurrenc e o f a violatio n and Respondent' s receip t o f writte n notic e tha t a violatio n ha s occurred , penaltie s wil l accru e a t one/hal f th e amoun t specifie d i n Paragraph 62 .

62 . Fo r thos e activitie s describe d i n the subparagraph s t o thi s paragraph , Responden t shal l pa yth e sums se t forth belo wa s stipulate d penalties .

(a ) Tie r 1 task s ar e the following :

- failur e t o submi t monthl yprogres s report s pursuan t t o Paragraph 3 8 (a) ;



### 3 1

### - failur e t o us e subcontractor s approve d b yEPA pursuan t t o Paragraph23 ;

- failur e t o provid e fo r EPAacces s pursuan t t o Paragraph41 ;

- failur e t o provid e fo r thir d part yduplicatio n o r spli t samplin g pursuan t t o Paragraph45 ;

- failur e t o submi t document s upo n reques t pursuan t t o Paragrap h47 ; 1s t through14th day s $ 25 0 pe r day 15ththrough30t hday s $ 50 0 pe r day 31s t dayand beyond $ 75 0 pe r day

(b ) Tie r 2 task s ar e the following :

- failur e t o complet e al l deliverable s i n a timel y manne r pursuan t t o th e schedul e approve d i n th e workplan ;

- failur e t o provid e dat a t o EPApursuan t t o Paragraph44 ; 1s t throug

h14t h da

y$1,00 0 pe r da y 15ththrough30thda y$2,50 0 pe r da y 31s t dayand beyond $5,00 0 pe r day

(c ) EP Aha s the discretio n t o reduc e o r eliminat e stipulate d penalties .

63 . Responden t shal l mak e al l payment s b yforwarding a certifie d o r cashier s chec k payabl e t o th e "Hazardou s Substanc e Superfund " to : Mello n Bank EPARegio n VII I Attn : Superfun

d Accountin g P.O . BOX 360859 M Pittsburgh , P

A1525 1 Check s shal l identif yth e nam e o f th e site , th e sit e identificatio n numbe r an d th e EPAdocke t numbe r o f thi s Order , and shal l identif yth e paymen t a s "Stipulate d Penalties. " A cop yo f th e chec k an d transmitta l letter , i f any , shal l b e sen t simultaneousl yt o the EP AProjec t Coordinator . 

### 3 264 . Responden t shal l pa yinteres t o n an

yunpai d balance , whic hshal l begi n t o accru e a t th e end o f th e 30-day period , a t the rat e established b ythe Departmen t o f Treasur y pursuan t t o 3 0 U.S.C . § 3717 . Responden t shal l furthe r paya handlin g charg e o f 1 percent , t o b e assessed a t th e end o f eac h31-da

yperio d and a 6 percen t pe r annu mpenalt ycharge , t o be assesse

d i f the penaltyi s no t pai d i n ful l withi n 9 0 day s afte r i t i s due .

65 . Responden t maydisput e EPA' s righ t t o th e amoun t o f penaltie s assessed b yinvoking th e disput e resolutio n procedure s unde r Section XVII I herein . Penaltie s shal l accrue bu t nee d no t b e pai d during th e disput e resolutio n period . I f Responden t doe s no t prevai l upo n resolution , al l penaltie s shal l b e du e t o EPAwithi n 3 0 day s o f resolutio n o f th e dispute . I f Responden t prevail s upo n resolution , n o penaltie s shal l b e paid .

66 . I n the even t tha t EP Aprovide s fo r correction s t o b e reflecte d i n th e nex t deliverabl e an d doe s no t requir e resubmission o f tha t deliverable , stipulate d penaltie s fo r tha t interi mdeliverabl e shal l ceas e t o accru e o n th e dat e o f suchdecisio n b

yEPA . 67 . EP Aagree s tha t i f stipulate d penaltie s ar e collecte d fo r a violation , EPAshal l no t seek statutor y penaltie s fo r th e identica l violation , an d vic e versa . Collectio n o f stipulate d penalties , however , doe s no t preclud e



### 3 3EPAfro mconducting al l o r par t o f th e remova l actio n o r doe s no t alte r Respondent' s obligatio n t o complet e performanc e unde r thi s Order . XX . FORC E MAJEUR E

68 . "Forc e majeure, " fo r purpose s o f thi s Order , i s define d a s an

yeven t arising fro mcause s beyond th e contro l o f Responden t an

d o f an

yentit ycontrolle d b yRespondent , including it s contractor s an d subcontractors , tha t delay s th e timel yperformanc e o f an yobligatio n unde r thi s Order , notwithstanding Respondent' s bes t effort s t o avoi d th e delay . Th e requiremen t tha t Responden t exercis e "bes t effort s t o avoi d th e delay " include s using bes t effort s t o anticipat e an y potentia l forc e majeur e even t an d bes t effort s t o addres s th e effect s o f an

ypotentia l forc e majeur e even t (a ) a s i t i s occurring , an

d (b ) following the potentia l forc e majeur e event , suc

h tha t the delayi s minimize d t o the greates t exten t practicable . Example s o f event s tha t ar e no t forc e majeur e event s include , bu t ar e no t limite d to , increase d cost s o r expense s o f an

ywor k t o b e performe d unde r thi s Orde r o r th e financia l difficultie s o f Respondent . Example s o f event s tha t ar e forc e majeur e include , bu t ar e no t limite d to , th e inabilit yt o obtai n dat a fro mothe r responsibl e partie s tha t ar e conductin

g RI/F S work o r fro mEP Atha t ar e integra l t o an d necessar

yt o complet e work being performed .



### 3 469 . I f an yeven t occur s o r ha s occurre d tha t ma y delayth e performanc e o f an yobligatio n unde r thi s Order , whethe r o r no t cause d b ya forc e majeur e event , Responden t shal l notif yb

ytelephon e th e EPAProjec t Coordinato r a t 293-1649 , o r i n hi s o r he r absence , th e Directo r o f th e Hazardou s Wast e Managemen t Division , EPARegio n VIII , a t 293-172 0 withi n fiv e day s o f whe n the Responden t know s tha t th e even t migh t caus e a delay . Withi n seve n day s afte r Responden t know s tha t th e even t migh t caus e a delay , Responden t shal l provid e i n writing (a ) th e reason s fo r th e delay ; (b ) th e anticipate d duratio n o f th e delay ; (c ) al l action s take n o r t o b e take n t o preven t o r minimiz e th e delay ; (d ) a schedul e fo r implementatio n o f an ymeasure s t o b e take n t o mitigat e th e effec t o f th e delay ; an d (e ) a statemen t a s t o whether , i n th e opinio n o f Respondent , sucheven t ma ycaus e o r contribut e t o an endangermen t t o publi c health , welfar e o r th e environment . Responden t shal l exercis e bes t effort s t o avoi d o r minimiz e an

ydelayan

d an yeffect s o f a delay . Failur e t o compl ywit hth e abov e requirement s shal l preclud e Responden t fro massertin

g an yclai mo f forc e majeure . 70 . I f EP

Aagree s tha t the delayo r anticipate d dela yi s attributabl e t o forc e majeure , th e tim e fo r performanc e o f th e obligation s unde r thi s Orde r tha t ar e directl yaffecte d b yth e forc e majeur e even t shal l b e extende d b yagreemen t o f th e partie s fo r a t leas t th e numbe r o f day s



### 3 5attributabl e t o th e forc e majsure . A n extensio n o f th e time fo r performanc e o f th e obligatio n directl yaffecte d b yth e forc e majeur e even t shal l not , o f itself , exten d th e time fo r performanc e o f an

ysubsequen t obligation , unles s agree d t o b y th e parties .

71 . I f EP

Adoe s no t agre e tha t the delayo r anticipate d dela

yha s bee n o r wil l b e cause d b ya forc e majeur e event , o r doe s no t agre e wit hResponden t o n th e lengt h o f th e extension , th e issue shal l b e subjec t t o th e disput e resolutio n procedure s se t fort hi n Sectio n XVII I o f thi s Order . I n an

ysuchproceeding , t o qualif yfo r a forc e majeur e defense , Responden t shal l hav e th e burde n o f demonstrating b y a preponderanc e o f th e evidenc e tha t th e delayo r anticipate d dela yha s bee n o r wil l b e cause d b ya forc e majeur e event , tha t th e duratio n o f th e delaywa s o r wil l b e warrante d unde r th e circumstances , tha t Responden t di d exercis e o r i s exercising du e diligenc e b yusing it s bes t effort s t o avoi d an d mitigat e th e effect s o f th e delayan d tha t Responden t complie d wit hth e requirement s o f thi s section .

72 . Shoul d Responden t carr ythe burde n se t fort hi n th e previou s paragraph , th e delaya t issue shal l b e deeme d no t t o b e a violatio n o f th e affecte d obligatio n o f thi s Order .

XXI . REIMBURSEMEN T O F RESPONS E COST S 73 . Afte r th e en

d o f eac hcalenda r yea r i n whic h thi s Orde r i s i n effect , EPAshal l submi t t o Responden t an



### 3 6accounting o f respons e cost s incurre d b yth e Unite d State s i n connectio n wit hthi s Order . Suchcost s shal l include , bu t no t b e limite d to , al l direc t an d indirec t respons e cost s incurred b yth e Unite d States . Withi n 3 0 day s o f receip t o f eac h accounting , Respondent s shal l reimburs e th e Unite d State s fo r al l unconteste d respons e costs .

74 . The accountin g describe d i n the previou s paragrap hshal l consis t o f a cos t summary . I f Responden t desire s additiona l information , Responden t mayreques t a cop y o f the CDM S repor t (o r it s equivalent) . The pendenc yo f an y suchreques t shal l no t excus e Responden t fro mmakin g an

y require d paymen t a t th e tim e suchpaymen t i s due .

75 . Responden t ma ycontes t paymen t o f an ycos t unde r Paragraph7 3 i f i t determine s tha t th e Unite d State s ha s mad e an accounting erro r o r ha s include d a cos t ite mtha t i s inconsisten t wit hCERCL Ao r th e NC P b

yinitiating disput e resolutio n unde r Sectio n XVII I o f thi s Orde r befor e paymen t i s due . The writte n reques t fo r disput e resolutio n shal l specificall yidentif yth e conteste d cost s and provid e a detaile d explanatio n o f th e basi s fo r th e objection . I n th e disput e resolution process , Responden t bear s th e burde n o f proving tha t an accounting erro r ha s bee n mad e o r tha t th e cost s ar e inconsisten t wit hCERCL Ao r the NCP . 76 . I f an

ydisput e ove r cost s i s resolve d befor e paymen t i s due , th e amoun t du e wil l b e adjuste d a s necessary .



### 3 7I f th e disput e i s no t resolve d befor e paymen t i s due ,

Respondent , o n o r befor e th e du e date , shal l payth e ful l amoun t o f th e conteste d cost s int o an escrowaccoun t i n a ban k dul ychartered i n the state . Responden t shal l simultaneousl y transmi t a cop

yo f th e chec k t o th e EPACos t Recover yProgra

m Manager . I f Responden t subsequentl yprevail s i n al l o r par t o f th e dispute , Responden t ma ywithdra

wfro mth e escro

w accoun t th e amoun t upo n whic h i t prevaile d i n th e disput e plu s interes t accrue d o n such amount . I f Responden t doe s no t prevai l i n al l o r par t o f th e dispute , th e ful l amoun t owe d t o EPAshal l b e withdraw n fromth e escrowaccoun t and thi s amount , plu s interes t calculate d i n accordanc e wit h Paragraph 7 8 o f thi s section , shal l b e transmitte d t o EPA withi n thre e day s afte r th e completio n o f disput e resolution .

77 . Fo r al l payment s unde r thi s section , Respondent s shal l remi t a certifie d o r cashier' s check , mad e payabl e t o th e "Hazardou s Substanc e Superfund, " t o th e following address :



### Mello n Bank EPARegio n VII I Attn : Superfun

d Accounting Pos t Offic e BOX 360859 M Pittsburgh , Pennsylvani a 1525 1 o r othe r suc

h addres s a s EP

Ama ydesignat e i n writing . Payment s mus t b e designate d a s "Respons e Costs—Californi a Gulc h Superfun

d Site " an

d shal l referenc e th e payer' s nam e an d address , th

e EP Asit e identification numbe r (Site No . 29) , an d th e docke t numbe r o f thi s Order . Copie s o f th e transmitta l



### 3 8lette r an d chec k shal l b e sen t t o th e EPACos t Recover y Progra mManager , a t th e same addres s a s th e EPAProjec t Coordinator , a t th e tim e o f payment .

78 . I f paymen t i s no t receive d b yEPAwhe n paymen t i s due , interes t shal l accru e fro mth e dat e o f transmitta l o f the accounting , fo r the cost s specifie d i n Paragraph 73 . Interes t shal l accru e o n the unpai d balanc e unti l such cost s an d accrue d interes t hav e bee n pai d i n full . Th e interes t rat e shal l b e th e rat e specifie d fo r interes t o n investment s o f th e Hazardou s Substance s Superfund i n section 107(a ) o f CERCLA , 4 2 U.S.C . § 9607(a) . Interes t wil l b e compounde d annually . On Octobe r 1 o f eac h subsequen t fisca l year , an y unpai d balanc e wil l begi n accruing interes t a t a ne wrat e t o b e determine d b

yth e Secretar

yo f th e Treasury . 79 . The Unite d State s reserve s it s right s t o bring an actio n agains t Responden t t o enforc e th e cos t reimbursemen t provision s o f thi s Order , t o seek penaltie s pursuan t t o sectio n 10 9 o f CERCLA , 4 2 U..S.C . § 9607 , an d t o recou

p respons e cost s se t fort h i n the accounting no t reimburse d b y Respondent . EP

Aals o reserve s it s right s t o recove r Respondent' s shar e o f an ypas t o r futur e cost s whic h ar e no t (a ) reimburse d unde r thi s Orde r o r (b ) addresse d a s settlemen t o f pas t respons e cost s unde r a partia l consen t decree , whic h wil l b e the secon

d ste p o f settlemen t a s describe d i n Paragraph 7 o f thi s Order .



### 3 9XXII . RESERVATIO N O F RIGHT S 80 . Excep t a s expressl yprovide d i n thi s Order , eac h part yreserve s al l right s an d defense s i t ma

yhave . Nothing i n thi s Orde r shal l affec t EPA' s remova l authorit yo r EPA' s respons e o r enforcemen t authoritie s including , bu t no t limite d to , th e righ t t o seek injunctive relief , stipulate d penalties , statutor

ypenaltie s and/o r punitiv e damages , no r shal l preclud e th e Unite d State s fro mtaking actio n t o enforc e thi s Order , no r fro

mtakin

g an yactio n pursuan t t o CERCLAo r an y othe r availabl e lega l authority . XXIII . DISCLAIMER S 81 . Th e executio n an d implementatio n o f thi s Orde r b yResponden t doe s no t necessaril yindicat e agreemen t wit h EPA' s Finding s o f Fac t an d Conclusion s o f Law . Furthermore , th e participatio n o f Responden t i n thi s Orde r shal l no t b e considere d a n admissio n o f liabilit yo r a waive r o f an y defens e an

d i s no t admissibl e i n evidenc e agains t Responden t i n an yjudicia l o r administrativ e proceeding othe r tha n a proceeding b

yth e Unite d States , including EPA , t o enforc e thi s Orde r o r a judgmen t relating t o it . Responden t retain s it s righ t t o asser t claim s including claim s o f contribution , agains t othe r potentiall yresponsibl e partie s a t the site .

82 . Nothing i n thi s Orde r i s intende d t o releas e an y claims , cause s o f actio n o r demand s i n la wo r equityo f an y part yagains t an

yentityno t subjec t t o thi s Orde r fo r an y liabilit yarisin

g ou t o f o r i n an ywa yrelating t o the site . 4 0XXIV . OTHE R CLAIM S 83 . I n enterin

g int o thi s Order , Responden t waive s an yrigh t t o seek reimbursemen t unde r section 106(b ) o f CERCLA , 4 2 U.S.C . § 9606(b) . Responden t als o waive s an yrigh t t o presen t a clai munde r section 11 1 o r 11 2 o f CERCLA , 4 2 U.S.C . § 961 1 o r 9612 . Thi s Orde r doe s no t constitut e an y decisio n on preauthorizatio n o f fund s unde r section 111(a)(2 ) o f CERCLA , 4 2 U.S.C . § 9611(a)(2) . Responden t furthe r waive s al l othe r statutor yo r commo n lawclaim s agains t th e Unite d State s including , bu t no t limite d to , contributio n and counterclaims , relating t o o r arising ou t o f conduc t o f thi s action , othe r tha n claim s agains t th e Unite d State s a s a PR P o r agains t th e Superfund fo r orphan shares .

84 . Excep t a s expressl yprovide d i n thi s Order , nothin g i n thi s Orde r shal l constitut e o r b e construed a s a releas e fro

man yclaim , caus e o f actio n o r demand i n la wo r equityagains t an yperson , firm , partnership , subsidiar yo r corporatio n fo r an yliabilit yi t ma yhav e arising ou t o f o r relatin g i n an

ywa yt o th e generation , storage , treatment , handling , transportation , releas e o r disposa l o f an yhazardou s substances , pollutant s o r contaminant s foun d at , take n t o o r taken fro

mthe site . 85 . Responden t shal l bea r it s ow n cost s an

d attorneys ' fees .

86 . I f a cour t issue s an orde r tha t invalidate s an y provisio n o f thi s Orde r o r find s tha t Responden t ha s 4 1sufficien t caus e no t t o compl ywit h on e o r mor e provision s o f

thi s Order , Responden t shal l remai n boun d t o compl ywit h al l provision s o f thi s Orde r no t invalidate d b yth e court' s order . 87 . I n th

e even t o f an

yinconsistenc

ybetween th

e terms an

d condition s o f thi s Orde r o r thos e containe d i n th e Work Pla

n approve d hereunder , an d an yschedules , attachments , exhibit s o r othe r document s incorporate d herein , th e terms an d condition s o f thi s Orde r shal l tak e precedence . XXV . FINANCIA

L ASSURANCE . INSURANCE . AN D INDEMNIFICATIO

N 

### 88 . Withi n 3 0 day s o f the effectiv e dat e o f thi s Order , Responden t shal l establis hand maintai n financia l securit yi n the amoun t o f $350,00 0 i n one o f the following forms : (a ) Asuretybond guaranteeing performanc e o f th e Work ; (b ) One or . mor e letter s o f credi t equalling the tota l estimate d cos t o f the Work ;

(c ) Atrus t fund ; (d ) Aguarante e t o perfor mthe Wor k b

yon e o r mor e paren t corporation s o r subsidiaries , o r b yon e o r mor e unrelate d corporation s tha t hav e a substantia l busines s relationshi p wit hRespondent ; o r

(e ) Ademonstratio n tha t the Responden t satisfie s the requirement s o f 4 0 C.F.R . Par t 264.143(f) .

4 289 . I f the Responden t seek s t o demonstrat e the

abilit yt o complet e th e Wor k throug h a guarante e b

ya third part ypursuan t t o Paragraph 89(d ) o f thi s Order , Responden t shal l demonstrat e tha t th e guaranto r satisfie s th e requirement s o f 4 0 C.F.R . Par t 264.143(f) . I f Responden t seek s t o demonstrat e it s abilit yt o complet e th e Wor k b ymean s o f the financia l tes t o r the corporat e guarantee , i t shal l resubmi t sworn statement s conveying th e informatio n require d b y4 0 C.F.R . Par t 264.143(f ) annually , o n th e anniversaryo f the effective dat e o f thi s Order . I n the even t tha t EP A determine s a t an

ytim e tha t th e financia l assurance s provide d t o thi s Paragraph ar e inadequate , Responden t shall , withi n 3 0 day s o f receip t o f notic e o f EPA' s determination , obtai n an d presen t t o EPAfo r approva l on e o f th e othe r forms o f financia l assuranc e listed i n Paragraph 8 8 o f thi s Order . Respondent' s inabilit yt o demonstrat e financia l abilit yt o complet e th e Wor k shal l no t excus e performanc e o f an y activitie s require d unde r thi s Order .

90 . No late r tha n 1 5 day s afte r the effectiv e dat e o f thi s Order , Responden t shal l secure , an d shal l maintai n unti l acceptanc e o f Respondent' s Notic e o f Completion , pursuan t t o Paragrap h 94 , comprehensive genera l liabilit yan d automobil e insuranc e withi n limit s o f on e millio n dollars , combine d singl e limit , namin g a s a n additiona l insure d the Unite d States . Responden t can satisfythi s requiremen t



### 4 3throug h self-insurance . I n addition , fo r th e duratio n o f thi s Order , Responden t shal l satisfy , o r shal l ensur e tha t it s contractor s o r subcontractor s satisfy , al l applicabl e law s an d regulation s regarding th e provisio n o f worker' s compensatio n insuranc e fo r al l person s performing th e Wor k o n behal f o f Responden t i n furtheranc e o f thi s Order . Prio r t o commencemen t o f the Wor k unde r thi s Order , Responden t shal l provid e t o EPAcertificate s o f suc h insurance , o r evidenc e o f self-insurance . Responden t shal l resubmi t suc h certificate s eac h yea r o n th e anniversar yo f th e effectiv e dat e o f thi s Order . I f Responden t demonstrate s b yevidenc e satisfactor yt o EPAtha t an

ycontracto r o r subcontracto r maintain s insuranc e equivalen t t o tha t describe d above , o r insuranc e covering th e same risk s bu t i n a lesse r amount , then , wit h respec t t o tha t contracto r o r subcontractor , Responden t nee d provid e onl ytha t portio n o f th e insuranc e describe d abov e whic h i s no t maintaine d b

yth e contracto r o r subcontractor . XXVI . EFFECTIV

E DAT E ANDSUBSEQUEN T MODIFICATION 91 . Th e effectiv e dat e o f thi s Orde r shal l b e th e dat e i t i s signe d b yEPA . 92 . Thi s Orde r mayb e amende d b ymutua l agreemen t o f EPAan d Respondent . Amendment s shal l b e i n writing an d shal l b e effective whe n signe d b yEPA . EPAProjec t Coordinator s d o no t hav e the authorityt o sig n amendment s t o the Order . 93 . No informa l advice , guidance , suggestions , assurance s o r comment s b yEP Ao r it s authorize d 4 4representative s shal l modif yth e term s an d condition s o f thi s Orde r o r reliev e Responden t o f it s obligation s unde r thi s Order , including it s obligation s t o obtai n forma l approvals . An ydeliverables , plans , technica l memoranda , report s (other tha n progres s reports) , specifications , schedule s an d wor k require d b

ythi s Orde r are , upo n writte n approva l b yEPA , incorporated int o thi s Order . An ynon-complianc e wit h suc h EPA-approve d document s shal l b e considere d a violatio n o f thi s Order . XXVII . TERMINATIO N AN DSATISFACTIO N 94 . Thi s Orde r shal l terminat e whe n Responden t demonstrate s i n writing an d certifie s t o th e satisfactio n o f EPAi n a Notic e o f Completio n tha t al l activitie s require d unde r thi s Order , including an yadditiona l work , ar e complete . EPAshal l eithe r accep t o r rejec t Respondent s Notic e o f Completio n withi n thirt y(30 ) calenda r day s o f receip t b y issuin g a writte n notice . I f EPAreject s Respondent' s Notic e o f Completion , EP Ashal l includ e i n it s writte n notic e o f rejection a detaile d statemen t identifying th e terms o f thi s Orde r whic h EPAconsider s incomplet e an d EPAshal l provid e Responden t reasonabl e opportunit yt o correc t an ysuch deficiencie s an

d t o resubmi t t o EPAth e Notic e o f Completion . 95. The certification shall be signed by a responsible official representingthe Respondent. The representative shall make the followingattestation: "I



### 4 5certif ytha t the informatio n containe d i n o r accompanying thi s

certification i s true , accurate , an d complete. " Fo r purpose s o f thi s Order , a responsibl e officia l i s a corporat e officia l wh o i s i n charg e o f a principa l busines s function .

XXVIII . RELEAS E ANDCONTRIBUTION PROTECTION 96 . EP Ahereb

yrelease s Responden t fro man yfurthe r liabilit yfo r conductin g o r paying fo r the 1991-199 2 Remedia l Investigatio n an

d an yFeasibilit yStud yassociate d wit h thi s Remedia l Investigatio n a s depicte d i n the RI/F S stud yare a map , date d Ma

y10 , 1991 . 97 . The limitation s i n thi s Orde r regarding furthe r work o n the Zin c Sla g pile s ar e base d o n the Unite d States ' understanding tha t Responden t doe s no t ow n th e Zin c Sla g pil e tha t wil l be studied unde r thi s Order .

98 . Wit h regard t o claim s fo r contributio n agains t Responden t fo r matter s addresse d i n thi s Order , the partie s agre e tha t Responden t i s entitled , a s o f the effective dat e o f thi s Order , t o such protectio n fro mcontribution action s on claim s a s i s provide d i n CERCL A§ 113(f)(2) , 4 2 U.S.C . § 9613(f ) (2) . XXIX . SIGNATORIE S

99 . The undersigne d representative s o f Responden t certifytha t the

yar e full yauthorized t o ente r int o th e term s an d condition s o f thi s Orde r an d t o execut e an

d legall ybind such partyt o thi s document .



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