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Potential Area of <br />Impacts <br />Potential Contaminant <br />Sources <br />Direct (Governing) <br />EPF /Control <br />Internal Controls <br />Upper Arkansas <br />River Watershed <br />Impacted water from the flooded <br />underground workings <br />5 -Shaft Pump Station <br />Run -off and seepage from the <br />Storke Yard <br />Storke Wastewater Pump <br />Station <br />Run -off from road cuts and <br />overburden on Ceresco Ridge <br />above the Storke Yard <br />Storke Wastewater Pump <br />Station, Ceresco Seepage <br />Collection System <br />Upper Eagle River <br />Watershed <br />4 Dam Seepage <br />4 Dam Pump Station <br />Robinson Lake and Dam - <br />process water, seepage, <br />sediments <br />Robinson Lake Seepwater <br />Pump System, <br />Robinson Dam <br />Robinson TSF and 1 Dam- <br />tailing, seepwater, toe drain <br />discharge, Tenmile Tunnel <br />drainage <br />Robinson Lake Pump <br />Station, <br />1 Dam (Robinson TSF), <br />Tim's Pond, <br />Warren's Pump <br />System, Chalk <br />Mountain <br />Interceptor <br />Upper Tenmile <br />Creek Watershed <br />Designated chemicals for <br />concentrate production and <br />water treatment chemicals <br />EPFs for designated <br />chemicals and water <br />treatment chemicals, <br />Impacted water including: <br />process water, seepage, run -off, <br />underground mine water, and <br />water from TSFs <br />5 Dam Seepwater Pump <br />System, <br />ETDL, <br />Tenmile TSF, <br />Mayflower TSF <br />Process Water <br />Tank, Tenmile <br />Tunnel, 2 Dam <br />Spillway, East <br />Side Channel, <br />Tenmile Decant, <br />Sludge <br />Technical Revision (TR -18) Climax Molybdenum Company <br />Environmental Protection Plan Permit No. M- 1977 -493 <br />The EPFs discussed throughout this EPP are shown on Figures AM- 06 -T -01 through AM- 06 -T -07. In <br />addition to these EPFs, a number of internal systems also exist to provide additional control. The internal <br />systems are classified separately to identify those systems that while serving an important function at the <br />Site, are not absolutely necessary for the control, and prevention of a release, of acid mine drainage, or <br />toxic or acid - forming materials. The EPFs and intemal controls are listed in Table T -3 and detailed <br />descriptions of all systems are provided in subsequent subsections, organized by watershed. <br />An extensive clean water interceptor system has been established at the Climax Mine to convey un- <br />impacted storm water around the process facilities and TSFs and to limit the amount of water to be <br />treated and discharged. These systems, constructed primarily in the 1970s prior to the enactment of the <br />DMO regulations, do not have specific, approved designs associated with them. Climax recognizes their <br />importance to the overall water management system, but notes that the clean water interceptors do not <br />appear to meet the definition of an EPF since they carry only un- impacted water around the Site and do <br />not contain or control designated chemicals or process solutions. As agreed upon with DRMS, although <br />these systems are considered to be pre -EPF systems and do not contain or control designated chemicals <br />or process solutions, they will be managed by Climax as intemal EPFs. The interceptor systems are <br />closely monitored, inspected and maintained as part of routine site monitoring activities. Other than <br />repair and maintenance, any future expansion or modifications of the interceptors will be subject to review <br />by DRMS, consistent with Section 6.4.21(10)(a)(ii) of the Rules. <br />Table T-3: Potential Contaminant Sources and Environmental Protection Facilities at the <br />Climax Mine <br />EPP: Version R2 <br />T -16 <br />December 2011 <br />