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2-47 <br />2.4.3 Water Requirements During Mining and Reclamation <br />Water is required for the cooling of motors on mining equipment, the suppression <br />of-respirable coal mine dust, and the control of fugitive dust along the access/haul road <br />and at the crushing operation. <br />The water volume necessary for the maximum production during the permit term <br />is found in Appendix P. The projected annual usage is 4,363,517 gallons. This equals <br />13.39 acre-feet per year. There may be days or periods when no water will be required; <br />thereby, reducing this requirement by an indeterminable volume. Water rights are <br />discussed in Section 4.2.5. <br />2.4.4 Hydrologic Control Designs <br />2.4.4.1 Sedimentation Pond Desion <br />Surface runoff from the disturbed mine operations area will be collected for <br />sedimentation control as shown in Figure 2.2-3. Details of runoff criteria, peak flows <br />and storage capacity design data are discussed in Section 2.4.1 and shown in Tables <br />4.2-10 and 4.2-12, The total disturbed area draining to the sediment pond is <br />approximately 2.9 acres. Peak discharge into the sedimentation pond will be less than <br />7 cfs. Runoff volume fora 10-year storm is 0.34 acre-feet, with sediment storage <br />capacity. The pond as shown in Figure 2.2-3 has the following storage capacity: <br />POND CAPACITY -ACRE FEET <br />Water Sediment Total <br />0.77 0.42 1.19 <br />M`Clane Volume 1 1/02 <br />