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_ (ii) There are no present users of surface or groundwater whose rights to such <br />• water would be adversely affected by mining activities. <br />The rights of surface water users in the adjacent area to the Roadside permit <br />area will not be affected by underground mining operations and there will be no <br />surface operations. <br />Other than the mine, there are no beneficial users of groundwater in this permit <br />area or adjacent area. There is one shallow alluvial well approximately 3,000 <br />feet southwest of the Roadside South portal area (see Figure 7-1, Tab Section <br />7, Benitendi Well Information), and one shallow alluvial well adjacent to the <br />Public Service Cameo Power Plant (see Figure 7-2, Tab Section 7). These <br />wells are outside the area of disturbance and outside the zone of drawdown. <br />Therefore, they will not be affected by mining. <br />• (iii) The quantity of surface and groundwater within the proposed permit area and <br />adjacent area will not be adversely affected by mining activities. Groundwater <br />removed from underground mine workings is clarified by allowing sufficient <br />settling time and returned to the Colorado River in compliance with NPDES <br />permit. The quantity of water discharged is insignificant with respect to average <br />river volume. Estimated quantities of water pumped from underground mine <br />workings, and flow quantities for the Colorado River are provided in Tab Section <br />7. The groundwater used in the mining operation is estimated in Table 7-2, <br />Tab Section 7. The amount of water not listed as mine discharge could be <br />depleted from groundwater recharge to or from the river. <br />Approximately 658 acre-feeVyear of mine discharge water is removed from <br />underground mine workings and discharged into the Colorado River, which is <br />flowing at a rate of 2.809 million acre-feet/year, increasing the flow, on the <br />average, 0.023 percent. <br />• 17-3 (Retype 12/16/96) <br />