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.~~~ <br />~ • III IIIIIIIIIIIIIIII <br />Cotter Corporation <br />JD-6 Mine <br />5tormwater Management Plan <br />Revised -October 4, 1993 <br />REF: Stormwater Discharge General Permit N COR-Q40024 <br />1. <br />Industrial Activity Description <br />The mining activities with the potential to affect stormwater discharge at the Cotter Corporation <br />Western Slope Operations C-JD-6 Mine consist of the following: <br />a. overburden & waste storage area (mine dump) <br />b. equipment and vehicle pazking <br />c. stockpile of low-grade ore <br />d. vent holes <br />e, access roads <br />Thunderbolt Mine dump <br />2. <br />Site Map <br />Included as Ezhibit A is a portion of the Naturita Quadrangle USGS map showing the location <br />of Cotter Corporation's JD-6 and Thunderbolt Mines. <br />Included as Ezhibit B is a site map of the Cotter JD-6 Mine site showing the azeas of wncern <br />for stormwater runoff and the existing and planned control measures to reduce potential <br />stonnwater pollution. <br />Included as Exhibit C is a site map of Thunderbolt Mine showing the areas of concern for <br />stormwater runoff and the planed control measures to reduce potential stormwater pollution. <br />Description of Potential Pollutant Sources/Material Inventory <br />The potential pollutant sources for this site include the JD-6 and Thunderbolt mine dumps, <br />the stockpile of low grade ore, vent holes and access roads. These areas are described <br />in more detail below. <br />Overburden & Waste Storage Area -The potential pollutant sources for the JD-6 mine site <br />includes a 1.5 acre mine dump. It should be noted, however, the potential for these materials <br />to get into the stormwater dischazge is minimal. <br />Stoc ile of Low Grade Ore - This small area (5,200 ft~) stockpile is situated on top of <br />the mine dump Accordingly, the potential for this material to get into the stormwater discharge <br />is also minimal. <br />Revision O1 <br />