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5.4 Surface Water Management <br /> All mine areas will drain internally. Uncontrolled releases of surface water and sediment <br /> from mining areas will not occur. Storm water collected in the open pit will be managed in <br /> accordance with Colorado/NPDES discharge permit requirements. Sediment generated from <br /> localized storm water runoff and surface drainage will be detained in the ponds created by the <br /> proposed mining operation. <br /> 5.5 Disturbance Areas <br /> Disturbance areas associated with the Morton Lakes Pit are estimated as follows: <br /> Mining Area Acres <br /> Stage 1 17.0 <br /> Stage 2 19.5 <br /> Stage 3 17.0 <br /> Stage 4 69.5 <br /> Stage 5 60.5 <br /> Stage 6 83.5 <br /> Stage 7 40.0 <br /> Total Project Disturbance 315 <br /> Total Permit Area 478 <br /> The total area to be disturbed at any point during the operation will be approximately 75 <br /> acres. <br /> 6 <br />