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-11- <br />• total annual appropriation of 3 of/yr. Table 3 indicates <br />the monthly volumes of water estimated for domestic and <br />commercial uses. Monthly domestic and commercial uses are <br />not expected to fluctuate, but will remain constant at a <br />rate of 0.05 of/mo. The total domestic and commercial use <br />of water is 0.6 of/yr. <br />Fourteen sedimentation ponds are proposed for the Kerr <br />Mine. The locations of the center points of the dams of the <br />sedimentation ponds are presented in Table 2 and are shown <br />in Figure 2. The storage requirements, including dead, <br />active and total storage, for each of these ponds are also <br />presented in Table 2. Dead storage is the amount of water <br />that cannot be released from the sedimentation pond because <br />of regulations set forth in 30CFR816.46(d) and potential <br />sediment problems. Dead storage is equivalent to the <br />required volume reserved for sediment storage in each of <br />• the 14 reservoirs. The volume of water that will remain in <br />dead storage, if it is not already occupied by sediment, is <br />equivalent to 66.9 acre-feet. Because the sedimentation <br />ponds will store this volume of water and will not be able <br />to release the water to the stream system, a right to store <br />66.9 acre-feet is needed. Application for these rights has <br />been made to Water Court in Case No. SOCW79. <br />Active storage, which totals 117.9 acre-feet, represents <br />the volume of water that will be detained during the <br />10-year, 24-hour precipitation event. This water will be <br />stored in the sedimentation ponds for a maximum of 24 <br />hours. As soon as the water in active storage meets <br />applicable water quality effluent limitations with respect <br />to total suspended solid concentrations, the water will be <br />discharged to the stream system. <br />u <br />Eeonard Rice Consullmg Waler Engineers.lnc. <br />