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8.0 MOVEMENT OF WATER FROM FLOODED WORK/NGS <br />TO THE SURFACE <br />An equilibrium water level is anticipated to occur in the flooding mine workings in less <br />than 10 years (see Section 6). Under equilibrium conditions the rate of inflow to the <br />flooded workings will equal the rate of outflow. The ground-water flow which passes <br />through flooded mine workings is expected to be approximately 70 gpm, but could be <br />as great as 200 gpm. This ground water is expected to discharge over a long stretch <br />of Cement Creek. The travel time from the flooded workings to Cement Creek is <br />estimated at approximately 150 years. Under the very unlikely scenario that the <br />equilibrium water level in the flooded workings is at 12,250 feet msl, some of the <br />water could reach Cement Creek (via the Mogul Mine) in as little as 4 months. <br />8.1 Nature of the Discharge from Flooded Mine Workings <br />Water leaving the flooded mine workings is expected to move primarily along natural <br />flow paths through fractures in the volcanic rocks until it discharges along Cement <br />Creek. The ground water is expected to move toward Cement Creek because the <br />natural fracture system has enhanced permeability in that direction and because the <br />hydraulic gradient between Sunnyside Basin and Cement Creek is the same as, or <br />greater than, in other directions (Section 3.4). <br />Based upon the preferred fracture orientation (Section 3.21 the ground water would <br />be expected to move generally southwest from Sunnyside Basin toward Cement <br />sunnylwp\traci122511Mar1993.Rpt 48 <br />H:I SIR1011 HYDRO-SERRCH <br />