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The mining operation requires water for dust <br /> suppression and for use in compaction of earth materials. <br /> For the two mining areas combined, this requirement is <br /> expected to be 37.0 acre-feet per year. In addition, <br /> evaporative losses from the ponds are estimated to be 12 . 3 <br /> acre-feet per year. Annual consumptive use is therefore 49. 3 <br /> acre-feet. <br /> During much of the time, the bottom of the pit will be <br /> below the water table and will require dewatering. Estimated <br /> pit- inflow rates reach a maximum of 43.8 acre-feet per year <br /> during the fifth year of mining in the NUCLA EAST mining <br /> area. In earlier years, pit inflow rates are expected to be <br /> lower because the pits are shallower. The pit-inflow water <br /> will be pumped from the pits and allowed to flow into Pond <br /> 007 . The water will be used for dust suppression and <br /> compaction, will evaporate, or be discharged into Calamity <br /> Draw. <br /> The inflow of ground water into the pits may affect <br /> surface-water rights in the vicinity of the pits. An <br /> investigation of surface flow during March, 1988 identified <br /> those rights that are fed by perennial ground-water <br /> discharges and which, therefore, are most likely to be <br /> affected by pit dewatering. Most of these rights are located <br /> along Calamity Draw. Only those rights upstream of Pond 007 <br /> 5 <br /> GEOTRANS, INC. <br />