Five Year Review Report for California Gulch EPA

FIVE YEAR REVIEW 111111111111111111111111111111111111111111111 1260282 R8 SDMS ~ Five Year Review Report Fourth Five Year Review Report for California Gulch EPA ID COD980717938 Leadville Lake County.

111111111111111111111111111111111111111111111 ' 1260282 - R8 SDMS : ~ Five-Year Review Report Fourth Five-Year Review Report· for California Gulch EPA ID COD980717938 Leadville Lake County, Colorado September 2012 SEP 2012 United States Environmental Protection Agency Region Denver, Colorado Date: Fourth Five-Year Review Report for California Gulch Leadville Lake County, Colorado Lis~ of'A~ronyms ~ .• viii Executive Summary : Five-Year Review Summary Form 1.0 Introduction ~ 12 ~ 2.0 Site Chronology 13 3.0 Background 16 ' \ 3.1 3.2 3.3 3.4 3.5 3.6 SITE-WIDE PHYSICAL CHARACTERISTICS SITE-WIDE LAND AND RESOURCE USE SITE-WIDE HISTORY OF CONTAMINATION SITE-WIDE INITIAL RESPONSE L ; :: SITE-WIDE BASIS FOR TAKING ACTIO~ : ~.:: SITE-WIDE REMEDIAL ACTIONS 16 19 19 20 20 24 ~ ~ 4.0 Five-Year Review Process 4.1 4.2 4.3 4.4 25 ADMINISTRATIVE COMPONENTS COMMUNITY ·INVOLVEMENT INTERVIEWS DOCUMENT REVIEW 25 25 26 27 5.0 Operable Units 29 I ~ 6.0 Operable Unit 1: Yak Tunnel/Water Treatment Plant 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6.11 DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEw DOCUMENT REVIEW ;' DATA REVIEW : SITE INSPECTION TECHNICAL ASSESSMENT ISSUES ~ RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU1 : 30 30 31 32 33 34 34 35 36 37 37 37 ; 7.0 Operable Unit 2: Malta Gulch Fluvial TailinglLeadville Corp MilllMalta Gulch Tailing Impoundments 39 7.1 7.2 7.4 7.5 DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE " PROGRESS SINCE THE LAST FIVE-YEAR REVIEw DOCUMENT REVIEW· : Fourth FYR - California Gulch 39 43 43 44 45 : September 2012 7.6 7.7 7.8 7.9 7.10 7.11 DATA REVIEW SITE INSPECTION : TECHNICAL ASSESSMENT ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU2 : 8.0 Operable Unit 3: Denver & Rio Grande Western Railroad Slag PileslRailroad EasementlRailroad yard 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 8.1 8.11 ~ DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEw DOCUMENT REVIEW DATA REVIEW SITE INSPECTION TECHNICAL ASSESSMENT ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU3 ~ ~ DESCRIPTION ' : REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIvE-YEAR REVIEw DOCUMENT REVIEW DATA REVIEW SITE INSPECTION TECHNICAL ASSESSMENT ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU4 DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEw DOCUMENT REVIEW DATA REVIEW ; SITE INSPECTION TECHNICAL ASSESSMENT ISSUES : RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU5 65 65 67 69 69 70 70 70 70 71 72 72 ; 11.0 Operable Unit 6: Starr Ditch/Penrose Dump/Stray Horse GulchlEvans Gulch 11.1 11.2 DESCRIPTION' REMEDIAL ACTION Fourth FYR - California Gulch 56 56 58 59 60 61 61 61 62 63 63 64 10.0 Operable Unit 5: ASARCO Smelters/Slag/MiII Sites 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 10.10 10.11 48 48 50 51 52 52 53 53 53 54 54 54 9.0 Operable Unit 4: Upper California Gulch 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 9.1 9.11 45 45 45 46 46 47 73 73 78 ii September 20 I2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 11.10 11.11 OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEW DOCUMENT REVIEW DATAREVIEW SITE INSPECTION TECHNICAL ASSESSMENT ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU6 ~ 80 80 80 81 81 82 83 83 83 12.0 Operable Unit 7: Apache Tailing Impoundments 84 12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 12.9 12.10 12.11 DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEW DOCUMENT REVIEW DATA REVIEW SITE INSPECTION TECHNICAL ASSESSMENT : ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU7 84 88 89 90 90 91 91 91 92 92 92 ~ 13.0 Operable Unit 8: Lower California Gulch 93 - 13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 13.10 13.11 DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEW DOCUMENT REVIEW DATA REVIEW SITE INSPECTION TECHNICAL ASSESSMENT ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU8 93 97 99 100 101 101 102 102 103 103 103 14.0 Operable Unit 9: Residential Populated Areas 14.1 14.2 14.3 14.4 14.5 14.6 14.7 14.8 14.9 14.10 14.11 DESCRIPTION : REMEDIAL ACTIONS ; OPERATION AND MAINTENANCE (O&M) PROGRESS SINCE THE LAST FIVE:.yEAR REVIEw DOCUMENT REVIEW DATA REVIEW SITE INSPECTION TECHNICAL ASSESSMENT ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU9 104 104 110 112 113 ; 114 114 115 115 116 116 116 15.0 Operable Unit 10: Oregon Gulch Fourth FYR - California Gulch 117 iii September 2012 15.1 15.2 15.3 15.4 15.5 15.6 15.7 15.8 15.9 15.10 15.11 DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEw DOCUMENT REVIEW DATA REVIEW SITE INSPECTION TECHNICAL ASSESSMENT ~ ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR U 10 117 119 120 121 122 122 122 123 124 124 124 16.0 Operable Unit 11: Arkansas River Valley Floodplain 16.1 16.2 16.3 16.4 16.5 16.6 16.7 16.8 16.9 16.10 16.11 126 DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEw DOCUMENT REVIEW DATA REVIEW ; SITE INSPECTION TECHNICAL ASSESSMENT ISSUES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU11 126 128 129 129 130 130 130 130 131 131 132 : : 17.0 Operable Unit 12: Site-Wide Water Quality 17.1 17.2 17.3 17.4 17.5 17.6 17.7 17.8 17.9 17.10 17.11 DESCRIPTION REMEDIAL ACTION OPERATION AND MAINTENANCE PROGRESS SINCE THE LAST FIVE-YEAR REVIEW DOCUMENT REVIEW DATA REVIEW SITE INSPECTION TECHNICAL ASSESSMENT ISSLJES RECOMMENDATIONS AND FOLLOW-UP ACTIONS PROTECTIVENESS STATEMENT FOR OU12 133 : \ 133 135 137 13 137 137 137 :: 138 139 139 139 18.0 Next Review 140 Appendix A: List of Documents Reviewed A-I Appendix B: Press Notice ~ B-1 Appendix C: Interview Forms C-1 Appendix D: Site Inspection Checklist D-1 Appendix E: Photographs from Site Inspection Visit E-1 Appendix F: Tables F-1 Appendix G: Figures G-1 Appendix H: Institutional Controls H-1 Fourth FYR - California Gulch iv September 2012 Tables Table 2.1: Site Chronology Table 3.i: Land Use-Based Lead Remedial Goals ; Table 6.1: Chronology ofOUl Events Table 6.2: Progress on OU1 Recommendations from the 2007 FyR Table 6.3: Current OU1 Issues Table 6.4: Recommendations to Address Current OU1 Issues Table 7.1: Types of Contamination in Each Media for OU2 Table 7.2: Chronology ofOU2 Events Table 7.3: Removal Actions Performed at OU2 Table 7.4: Progress on OU2 Recommendations from the 2007 FyR Table 7.5: Current OU2 Issues Table 7.6: Recommendations to Address Current OU2 Issues Table 8.1: Chronology of OU3 Events Table 8.2: Contaminated Media at OU3 Table 8.3: Progress on OU3 Recommendations from the 2007 FYR Table 8.4: Current OU3 Issues ; Table 8.5: Recommendations to Address Current OU3 Issues Table 9.1: Chronology of OU4Events Table 9.2: Progress on OU4 Recommendations from the 2007 FYR Table 9.3: Current OU4 Issues Table 9.4: Recommendations to Address Current OU4 Issues Table 10.1: Chronology ofOU5 Events Table 10.2: OU5 Contaminated Medium Table 10.3: Current OU5 Issues Table 10.4: Recommendations to Address Current OU5 Issues Table 11.1: Chronology ofOU6 Events Table 11.2: EPA Initial Response Actions for OU6 : Table 11.2: OU6 Contaminated Media Table 11.4: Progress on OU6 Recommendation from the 2007 FYR Table 12.1: Chronology of OU7 Events Table 12.2: OU7 Removal and Remedial Actions Table 12.3: OU7 Contaminated Media Table 12.4: Progress on OU7 Recommendation from the 2007 FYR Table 12.5: Current OU7 Issues Table 12.6: Recommendations to Address Current OU7 Issues Table 13.1: Chronology ofOU8 Events Table 13.2: OU8 Contaminated Media , Table 13.3: Progress on OU8 Recommendations from the 2007 FYR Table 14.1: Chronology of OU9 Events Table 14.2: Response Actions for OU9 Table 14.3: OU9 Trigger Criteria for Lead : Table 14.4: Progress on OU9 Recommendations from the 2007 FYR Table 14.5: 20lO Blood Lead Testing Results Table 15.1: Chronology ofOU10 Events Table 15.2: OUlO Contaminated Media Table 15.3: Progress on OU10 Recommendations from the 2007 FYR Table 15.4: Current OU10 Issues Table 15.5: Recommendations to Address Current OUlO Issues Fourth FYR - California Gulch v : : 13 23 31 ' 33 37 37 40 40 42 44 46 47 49 50 52 54 54 57 60 63 64 66 67 72 72 74 75 78 80 85 86 88 90 92 92 95 97 101 104 III III 113 114 118 119 122 124 124 September 2012 Table 16.1: ChronologyofOU11 Events ; Table 16.2: CurrentOU11 Issues Table 16.3: Recommendations to Address Current OU11 Issues Table 17.1: Chronology ofOU12 Events ,,,,,,,,,,,,,,,,,,,,,,,,,,,:,,,,,,,,,,,,,,,,,,,,,,,,,,, Table 17.2: OU12 Contaminated Media Table F.1: QUI Summary of2010 Ground Water Quality Data: Five-Year Sampling Event Results Table F.2: OU1 Ground Water Quality at Well BBW-5, 2007-2010 Table F.3: OU1 Ground Water Quality at Well BBW-lO, 2007-2010 Table FA: OU1 Yak Tunnel Blockage Water Quality, 2007-2010 Fourth FYR - California Gulch VI September 2012 127 131 131 133 135 F-1 F-2 F-3 F-4 Figures Figure 3.1: Site Location Map 17 18 Figure 3.2: Detailed Site Map Figure 6.1: OUI Location Map 30 Figure 7.1: OU2 Location Map 39 Figure 8.1: OU3 Location Map 48 Figure 9.1: OU4 Location Map 56 Figure 10.1: OU5 Location Map ~ 65 Figure 11.1: OU6 Location Map 73 Figure 12.1: OU7 Location Map 84 Figure 13.1: OU8 Location Map 93 Figure 14.1: OU9 Location Map ~ 104 Figure 15.1: OUI0 Location Map 117 Figure 16.1: OUll Location Map 126 Figure G.l: Detailed Map ofOU5 AV/CZL Sites G-l Figure G.2: Detailed Map ofOU5 EGWA Sites ' G-2 Figure G.3: Overview Map ofOU6 G-3 'Figure G.4: Detailed Map of Stray Horse Gulch in OU6 G-4 Figure G.5: Overview Map of OU8 G-5 Figure G.6: Detailed Map of Fluvial Tailing Sites and and the Colorado Zinc-Lead Tailing Impoundment on OU8 G-6 Figure G.7: Detailed Map of Fluvial Tailing Site on OU8 G-7 Figure G.8: Detailed Map of Fluvial Tailing Site and Non-Residential Soils on OU8 G-8 Figure G 9: Detailed Map of Fluvial Tailing Site 6, the Gaw Waste Rock Pile and Non- Residential Soils on OU8 G-8 Institutional Control Documents H.l: A Resolution Amending the Lake County Land Development Code and Adopting Regulations Concerning Institutional Controls for Operable Units and within the California Gulch Superfund Site, March 3, 2009 H-l H.2: A Resolution Amending the Lake County Land Development Code and Adopting Regulations Concerning Institutional Controls for Seventeen Mine Waste Piles Located in Operable Unit within the California Gulch Superfund Site, December 23, 2009 H-8 H.3: A Resolution Approving the Lake County Community Health Program Phase Work Plan to Serve As the Institutional Control for Operable Unit of the California Gulch Superfund Site, March 16,2010 H-12 H.4: A Resolution Approving the Lake County Land Development Code and Adopting Regulations Concerning Institutional Controls for Operable Units and within the California H-15 Gulch Superfund Site, December 22,2010 Fourth FYR - California Gulch VII September 2012 List of Acronyms ~g/dl ~g/L AOC ARAR ARD AROD ASARCO AV AWQC BRA CD CDPHE CERCLA CFR COC CP CWA CZL D&RGW EE/CA EGWA EPA ESD FFS FS FTS FYR IC KF LCBLUD LCCHP LMDT LMGFT MCL mg/cm2 mg/kg MOD MGT! MSL MTI NCP NPL OCC O&M OU PRP PWT micrograms per deciliter micrograms per liter Administrative Order on Consent Applicable or Relevant and Appropriate Requirement Acid Rock Drainage ROD Amendment American Smelting and Refining Company Arkansas Valley Smelter Ambient Water Quality Criteria Baseline Risk Assessment Consent Decree Colorado Department of Public Health and Environm~nt Comprehensive Environmental Response, Compensation, and Liability Act Code of Federal Regulations Contaminant of Concern Contingency Plan Clean Water Act Colorado Zinc-Lead Mill Denver & Rio Grande Western Railroad Company Engineering Evaluation/Cost Assessment Elgin Smelter, Grant/Union Smelter, Western Zinc Smelter and Arkansas Valley South Hillside Slag Pile United States Environmental Protection Agency Explanation of Significant Differences Focused Feasibility Study Feasibility Study Fluvial Tailing Site Five-Year Review Institutional Control Kids First Program Lake County Building and Land Use Department Lake County Community Health Program Leadville Mine Drainage Tunnel Lower Malta Gulch Fluvial Tailing Maximum Contaminant Level milligrams per square centimeter milligrams per kilogram Memorandum of Understanding Malta Gulch Tailing Impoundment Mean Sea Le~el Malta Tailing Impoundment National Oil and Hazardous Substances Pollution Contingency Plan National Priorities List Ore_and Chemical Company Operation and Maintenance Operable Unit Potentially Responsible Party Pacific Western Technologies, Ltd Fourth FYR - California Gulch Vlll September 2012 RA Remedial Action RAO Remedial Action Objective RCRA Resource Conservation and Recovery Act RD Remedial Design _ RI Remedial Investigation ROD Record of Decision \ RMP Routine Monitoring Plan RPM Remedial Project Manager SFS Screening Feasibility Study SDWA Safe Drinking Water Act TI Technical Impracticability UAO Unilateral Administrative Order UP Union Pacific USBR Unites States Bureau of Reclamation USGS United States Geological Survey \ Fourth FYR - California Gulch IX September 2012 Illi•••111 351214 31v.:009";0tll'M " of CRS RSO.oo D50.oo Patric:ieBcrp lake CCllIn\f Recorder Heal1h aD4EuviroDul1:at will ptVVidc llll bd1ia1 reapoDSC within tell (10) days ofRlCllipt oftbe wriUcftRqQCllt IIDd win UlIO beat o«orts to coonliDatc with 1aDdownrft to provide a Iimcly raoJution of tile request Applicanu an: lIOlcly rapoaaiblc for obIaiDiDg writteD waV81 from 1bc ColOl'ldo ~ ofPubJic Heallh IIId E!lviioDmeftt 2) NoIl-~RIalodics It sba11 be tmlawfu1 to exQVale and_ve uy eartheD.1IIIlcriaIa indoct! but JlO\linIitedto, aetivc din, DIlive rniDc WlISIe rock or miJIe·tliliDp fmro die cnM:ICd.percd on III EPA lIOn-enainecml rcmaly ill czcess of tal (10) cubic )'II'ds in operable UDit of 1ho Califomia sgn Ouldl Superfuod Site wi1bout prior lIPJl1'OV*\from the Colorado Depat1mc:Dt otPubJlc Health IIDd EavimDmeat Wriuea proof of approval &om die CoIOl1ldo Depanment of Public; Health and EartimImcm II a c:ollditionpm:edcDt to iSIUlI&IiC8 oh buUdiD& permit by 1hC Lako CoulUy Building 8IId Laud Uae Oc:padmalt 1be applicllllt uwst submit a -mtest reqUQt 101- approval to the CoJoqdo J)cputlncQt or Public Health and ~ widt a copy to the IAlteCounty Baildiaa and Laud Use DIlpIrtmalt _ via e:atified mail The Colcndo Department of Public Health aad E'.avirmImait Will, ptOYide au initial rapouc within len (10) days ofreccipC ofebe wri1tclllfXJUe*llllld will \1M beat efforbto GOOIdinatB with ~ to provide a 1lmB1y molution oftbt: requcisl Applic:iIDIJ are 101ely JeI}lODtIi.ble for obtainisla writteIlllJlllrOval ftomthe Colorado DqlIrUlJa1tofPuhlic·Heeltb - ' £1'Ivi.tvDmcDt 3) Peaahy, Failure to provide ~ of prior ootifiea!iO'll aod approval from the Colondo Department.ofPublk HtI1th amd EnYiJonment for theIC prohibited acdvitiea is wbjeetto a civil paaaltyofOne HIIDdred dollars (S100.00) AdditkmaUy•.1hD iIltbu:liOll will be IepONll to the Colorado Depamnetl.t of Public Heallh IIId F.IlviJoamad by leUcr from the Lake Co1lllty Building and LandUso~ B) ~ Ulllt, oftlut c.JIfmUo GuIeA S,.uI8ItJ SlU I) Eaginoa:cd Rancdles It ebaIl be lIIllawtW to em:t, CIOIIStnII:t, t1lCOllStNet, liter or IIIOdif:y tbD footpri.at of S'1 bui1diDg structure or improvements on 1md, -uclia& Q.ClI\'IRiOl1, wi1bIntlll~TIlIl*!y in operable unit.a of Gte CaUbnia OWCb Superfund Silo witllout pliOI' uotifie: ti0ll8lld approvll1 &am the Colorado DepII1DacDt of Public Health IIDCl Environment WriUell proof of approval &oIl1 the Colorado DcpartmeI#ofPub~ Health and EssviroDmeat is a CODItitiOn ~ to ~ ofa building pennit by the LakO CouaIy Building aqd LIIIl1 Usc'DepirtIllaat Thnpplicant must submit a writteD request for approYBl to the Colon4o ~ ofPublic Health and EDvlroDlUDt with a COPf to the Lekc County BuildiDg and LlInd Usc Departmeal, ach via e:atified mail The ColoradO Dcp.nmczu ofPublic Heal1h III:d EuviroDmeut win provide III initial mponac within ten (to) daY' ofrcceipt orebe written request lIIICl will U!lO best clforts to coordinate with IaDdowIIen to provide uimely resolutioD of the ~ AppIiCll11tS ~ lO1cly I'CSpllDlIi'oIe for ~ ~ lIJ'IlI'OYIl nom the Colondo Dcputmcut ofPublic Health aod BDviloDmcIDt 1) NOD-~R.cmcdiCII 1t JbaU be ImlawfulIO CXC&'VIte ao.d ranovc any IllI1bc:D maIa'iala i.ocI.udiD& but not limited to, Dative dirt, Dative lOiJ, mine 'Wute roclt or mine taiIiDp ia ~ ofUID (10) cubic yards fIom anEPA ~ remc=dy in openbJe Ullit or Cali!onIia Gulch Superi\IIld Site witIMrut prior approwI1iom the Colorado· DcpIrtmeal ofPublic HetI1th aDd ED-moDmlllt Writtlm pnlOf of approvalfiom the ColCndo DepeltmeDt ofPub~ Health and ED'riroDmcm is a condid.01l preccclcIlt to issuaIlce of building pennil by the UIIte CountyBui1di1lg aod Land Use.Depanmcpt The Ipplie:aut mlllt submit Fourth FYR - California Gulch H-S September 2012 - - - - - - - - - - - - - - - - - - - - - 3S 1214 , of 111111111 PlUicia gep 3/3"OOHOO PM Leltc Courny ll,eccn CRS IUO.OO 0$0.00 a 'IIri1tcIlRqIlClt for IppfOYal to the CoJondo ~ of Publl.c Health IIld EnWoaa:icDt with a copy to the Lab CowIty B\Iikting IIDd LIlld UK DepIr1ulalt, eecb vi, CCll1ified 1llIil ~ Coloftldo Depu1ment of Public HcaJtluad F lMroamcat will provide initiIIllUJlO1lSC 'Nithiu ten (10) days ofroeeipl oftIYl wriIfal request IDd will UK besl etrOltJl tQ ooordiaala with bmdoWlllll1to provide a timely 1'eIOJution of the request AppliCllDls lin! solely respoDIIib&c tor oblaiDiDs wdUcnlpp1'OVl1 &om the Colcmldo ~ of Public HCIJtb _ Euvlroalr=t 3) peaa1ty Failure to provide pzuof ofprlot DOtifica1iaa lUld IppIOVIl fiom the Colllddo Depertmcr.It ofPub1ic Health IIDl1 Envlnnunmt for 1be:sci prohibi," ldivitia is IUbject to a civil JI'Dlllty of 0110 HUI1drec1 dollars ($100.00): AdditioDaUy, the ~ wl1l ~ -s lotbe ColOl'lldo 0cparuDcal of Publio!kalth.1Ild ~ by lea from tho I aQ County Buildln& and LendUICI~ SectkiIl S Tbe lAke Cotmty !ADd Development Code Section 8.2 is _by amended to add the f'o1lowiDa IIIIW 1U1HeotIoa, 8.2.10: 8.2.10 .ovba&SufueMl orCo .C0 EPA E~ or Nn-EqIaecmI ~ W1tIloat PrIor ColoratJo J)eperCJaeat of Public Haltb aDd lIMrH_t ApproYal A) 0pctw6lc Chdt J o/tlI ~ GfIIdt SlqJclfIDfll $lie, To cnsct conatJ:uct, ~ 11_ at IDGdily the fi)OCpriDl of 8I1y ~ structure or improVCDICIIII Ob 1IDd iDcludia& ueavatioD, within EPA cagiDeered mncdy in openble lIIIit of the Ca1iComia Oulch Supert\md Site wilhout prior approval ofthc Colorado Departmeut of Public Healtb aod Enviroumcnl To mnow 1111 eartheD ~.iDchIdiag but DOt IhDitecl to DlIti~ din, DSlive soil, miDe wate rock 01' miIIc WliDaa &om the owued panlC1 ofan EPA 1I0Il­ ~ rc:iDov in CIUlClIS oCtal (10) cubic,.Na ill opcUblc unit oflhc CIllt"omia 0u1dl Suputbad Site widlout.pNJr ~wl of the COlorildo DepartmeaI of Public HClI1th CId EnviroDD1C'DL B) ~ Villi' ~"' C#II/ GfIIdI s.,nJ'1ItI4 Si& To llI:CCl, co.astruet recotlSllUCt, altet or modify the ilo&priat of Ill)' biIildiDs strue~ or impto\Clllll1ts OD lad iJlc111diq aoavatioD, withia all EPA ~ remcdy ill opensbIe unit of the CIIifomia Oulc:h Superftmd So witbout priorlPJll'Ovai otthc Coloildo J)cpIrtmeIlt o!Publk: Health and EnviroulDalt To ~ mel RdIOVC Ill' earthen 1IIIdaiaIa iAcllJdlng, bin DOt limited to nati~ Itirt"IlIdive 80il miDI: wurelOCk or miIIC tIi1inp tiam tho 0WD0d pIlrCd of lID EPA 1IOIl4l~ mDCICly in ~ of tal (10) cubic yIlds in opecable WIit oftbB C&lifomia Ook.b Superfuad Site witbout prior appoval of the COloRdo DcpIUUDCI:It of Public Health alld &viIoDmc:Dt Sg;tiop This ~ tball become dfeedve upoo its lIdoptIon tbe MOVED, READ AND AOOPlED by the Board of ~ COlll.ll1iasi