Laserfiche WebLink
JD-8 Mine EPP-Stormwater Management Plan 2 <br /> 4. STORMWATER MANAGEMENT CONTROLS <br /> The following sections of this SWMP describe stormwater quality controls and their implementation at the <br /> JD-8 mine. <br /> 4.1 SWMP Administrator <br /> The Stormwater Management Plan Administrator for the JD-8 Mine is: <br /> Mr. Glen Williams <br /> Mining Manager, West Slope Operations <br /> Cotter Corporation (N.S.L.) <br /> P.O. Box 700 <br /> Nucla,CO 81424 <br /> Ph: (970) 864-7347 <br /> email: glen.williams@.cotterusa.com <br /> 4.2 Identification of Potential Pollutant Sources <br /> Potential sources of loading to surface runoff from the JD-8 Mine include the waste rock pile, temporary <br /> ore stockpile, access roads, haul roads, fuel and oil storage area, and equipment fueling area. The <br /> Environmental Protection Plan (EPP) for the mine indicates that runoff from the waste rock pile could <br /> potentially contain elevated gross alpha radiation, vanadium, sulfate, and total dissolved solids (TDS) <br /> concentrations in addition to sediment. Runoff from the temporary ore stockpile could contain elevated <br /> arsenic, molybdenum, selenium, fluoride, sulfate, uranium, TDS, gross alpha radiation, and sediment. <br /> Sediment is the primary concern in runoff from the access and haul roads. Runoff from the fuel and oil <br /> storage area and the equipment fueling area could potentially contain diesel fuel,oil, grease,and sediment. <br /> BMPs are currently in place to prevent several of these sources from contacting surface runoff: <br /> • The fuel and oil storage area is lined and bermed and is therefore not in contact with surface <br /> runoff. The facilities are routinely inspected to ensure that tanks and surface water controls are <br /> intact and in proper functioning condition. <br /> • The ore storage pad is located within the footprint of the waste rock pile(Figure 1)and occupies an <br /> area of less than 0.25 acres. The amount of ore stored on the ore storage pad at any given time will <br /> not exceed 4,000 tons. All stockpiled ore is currently stored in the mine and not in the external <br /> stockpile because the mine is in intermittent status. The stockpiled ore will be moved to the <br /> external ore storage area after the mine resumes active status. Runoff from the external ore <br /> stockpile is routed to a stonnwater retention structure (the "constructed catchment") via berms at <br /> the toe of the waste rock pile and along the access road, as described in Attachment A. <br /> • The waste rock pile has a current footprint of approximately 2.4 acres and contains approximately <br /> 36,000 tons of material. According to the expected mine plan, approximately 184,000 tons will be <br /> added to the waste rock pile for a total of approximately 220,000 tons with a final footprint of <br /> approximately five acres. Runoff from the waste rock pile is routed to a constructed catchment via <br /> berms at the toe of the waste rock pile and along the access road, as described in Attachment A. <br /> • The access road to the site also serves as the haul road, and travels across the waste rock pile to the <br /> temporary ore storage area and the mine facilities area. Runoff from the access road outside of the <br /> Lower Mine Permit Area flows to the natural drainage as described in Attachment A. Runoff from <br /> the access road within the Lower Mine Permit Area is routed westward, contained by the crest <br /> berm along the east waste rock pile, and directed to the constructed catchment as described in <br /> Attachment A. <br /> 41222A.110601 Cotter Corporation <br />