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2.05.6 Mitigation of the Impacts of Mining Operations <br />(a)(iv) The portals are located in an area that is above the water table so <br />there will be no gravity discharge of water from the mine. <br />(b)(i) A plan for control of surface and ground water drainage. <br />Applicant has prepared a drainage and sediment control system <br />which will minimize changes to the surface water and to the <br />prevailing hydrologic balance in the facilities area by detaining run- <br />off in sediment pond(s) or treating runoff with alternative <br />sedimentation control. <br />The sedimentation control plan is presented in Appendix M and is <br />shown on Figure 2.2-3. <br />Sediment ponds will improve the quality of the surface water <br />flowing through and out of the proposed permit area and adjacent <br />area because sediment loads will be reduced. This will reduce the <br />total suspended solids in the surface water regime. Since sediment <br />ponds are routinely dewatered, the quantity of water flowing <br />through and out of the proposed permit area and adjacent area will <br />not be diminished. <br />Run off from the facilities will flow to the southwest and intercept <br />East Salt Creek. <br />(b)(ii) A plan for treatment and for surface and ground water drainage. <br />Surface run-off from the facilities area should not require treatment, <br />other than detention time provided by the sedimentation control <br />pond(s) or treatment with alternative sedimentation control. Any <br />discharge from the facilities will be treated to meet CDPS discharge <br />permit requirements. <br />Quantitative limits for the surface and ground water drainage are as <br />follows, subject to changes in CDPS discharge permit <br />requirements. <br />PR -02 2.05-58 10/12 <br />