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permitted, to decrease the concentration of coal fines from <br />. . <br />mine water discharge. This plan for control of the surface <br /> water and groundwater pumped from the Golden Eagle Mine is <br /> shown on Map 11, Sediment and Surface Water Control Plan. <br /> Diversion and sediment control structures collect all water <br /> from the disturbed areas of the surface facilities and are <br /> sized properly to ensure that they continue to work under <br /> adverse weather conditions. This system currently is in use at <br /> the Golden Eagle Mine and is functional. The treatment of the <br /> water which is discharged is based on the NPDES permit <br /> limitations (Exhibit 22, NPDES Permit). The quality of the <br /> water discharged from the sediment control system is compiled <br /> in the Annual Hydrology Reports. <br /> All topsoil piles not located within an approved <br /> sediment control system will be constructed in a manner as to <br /> provide slopes non-conducive to erosion. Should normal <br /> revegetation activities not provide the stabilization required, <br /> alternative sediment control measures will be provided (hay <br />• bales, silt fence or catch basin). <br /> Support facilities located outside of the sediment <br /> control system employ best management practices to achieve <br /> effluent limitations. The best management techniques include <br /> the use of vegetation, gravel, earthen, silt fence or straw <br /> containment berms in configurations which have been modelled to <br /> demonstrate adequate protection during storm events. <br /> water Rights. The rights of users of surface and <br /> groundwater present in the area of the Golden Eagle Mine is <br /> reviewed in Section 2.04 of this document. Groundwater has <br /> been identified as a source of water for domestic, irrigation, <br /> stock watering and industrial use (Table 7). However, the <br /> Golden Eagle Mine's effect on groundwater users is not expected <br /> to be significant. Also, projections of the hydrologic <br /> consequences of mining have anticipated no decreases in the <br /> quantity of water on downstream surface water users of the <br /> Purgatoire River. <br />• <br /> 2.OS-42 (Revised 04/27/94) <br />