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of alluvium and fill, known as the alluvial fill area, occupy the valley adjacent to <br />the creek. R:00043, 00217. A map provided by Cotter in its April EPP shows <br />the extensive area that is saturated in the Ralston Creek Alluvium. R:00085. <br />Although Mine - related buildings, except for the water treatment plant, have <br />been removed, the fill remains. R:00043, 00391. The fill contains uranium, <br />molybdenum, and other metals due to the Mine waste rock. R:00391, 00873. <br />Cotter conducted a gamma survey of the Mine; Figure 2.3 shows numerous areas <br />that contain radioactive hot spots in the alluvial area. R:00037, 00458, 00881 -882. <br />Cotter concedes that the alluvial fill is in direct hydraulic contact with <br />Ralston Creek and contributes to the loading of uranium from the Mine into the <br />creek. R:00058, 00156, 00158, 00203 -204, 00228, 00261, 00394, 00951, 00975. <br />Cotter agreed to implement corrective action number 1 to treat ground water <br />flowing into Sump No. 1. <br />During operations <br />R:00903. <br />ground water flowed into the Mine from core holes, <br />faults and fractures. R:00065 -68, 70. Ground water flow into the Mine between <br />1973 and 2000 varied from about 75 gallons per minute ( "gpm ") to more than <br />600 gpm, depending on mine development and construction activities. R:00066. <br />6 The alluvial fill facts alone support all three violations. <br />7 Ground water continues to flow into the Mine, entering at a level equal to or below the <br />mine pool and infiltration from the upper portions of the Mine. R:00146, 00221. In its <br />April EPP, Cotter calculated the inflow to the Mine from unfractured bedrock at full <br />depth to be 64 gpm. R:000 8. Water from the upper workings is impacted by acid rock <br />drainage and is of much po rer quality than water entering the lower workings. <br />16 <br />