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Technical Revision (TR -28) <br />Environmental Protection Plan <br />Climax Molybdenum Company <br />Permit No. M-1977-493 <br />descriptions of all systems are provided in subsequent subsections, organized by watershed. <br />An extensive clean water interceptor system has been established at Climax to convey un -impacted <br />storm water around the process facilities and TSFs and to limit the amount of water to be treated and <br />discharged. These systems, constructed primarily in the 1970s prior to the enactment of the DMO <br />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 internal EPFs. The interceptor systems are <br />closely monitored, inspected and maintained as part of routine site monitoring activities Other than <br />repair and maintenance/upgrades, any future expansion or modifications of the interceptors will be <br />subject to review 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 />Potential Area of <br />Potential Contaminant <br />Direct (Governing) <br />Internal Controls <br />Impacts <br />Sources <br />EPF/Control <br />Impacted water from the flooded <br />5 -Shaft Pump Station <br />underground workings <br />Run-off and seepage from the <br />Storke Wastewater Pump <br />Upper Arkansas <br />River Watershed <br />Storke Yard <br />Station <br />Run-off from road cuts and <br />Storke Wastewater Pump <br />overburden on Ceresco Ridge <br />Station, Ceresco runoff <br />above the Storke Yard <br />collections stem <br />4 Dam Seepage <br />4 Dam Pump Station <br />Robinson Lake and Dam - <br />Robinson Lake Seepwater <br />process water, seepage, <br />Pump System, <br />Upper Eagle River <br />sediments <br />Robinson Dam <br />Robinson TSF and 1 Dam - <br />Robinson Lake Pump <br />Tim's Pond, <br />Warren's Pump <br />Watershed <br />tailing, seepwater, toe drain <br />Station, <br />System, Chalk <br />discharge, Tenmile Tunnel <br />1 Dam (Robinson TSF), <br />Mountain <br />drainage <br />Interceptor <br />Designated chemicals for <br />EPFs for designated <br />concentrate production and <br />chemicals and water <br />water treatment chemicals <br />treatment chemicals, <br />Mill Process <br />Upper Tenmile <br />Water Tank, <br />Creek Watershed <br />Tenmile Tunnel, 2 <br />5 Dam Seepwater Pump <br />Dam Spillway, , <br />Impacted water including: <br />System, <br />Tenmile Decant, <br />process water, seepage, run-off, <br />ETDL, East Side Channel, <br />Sludge <br />underground mine water, and <br />Tenmile TSF, <br />Densification <br />water from TSFs <br />Mayflower TSF <br />Plant (SDP), 3 <br />Dam Pump <br />Station, Property <br />Discharge Water <br />Treatment Plant <br />EPP: Version R4 T-17 August 2018 <br />