Laserfiche WebLink
<br />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 ba 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.e 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 Por 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 />• <br />GEO'TRANS, INC. <br />REVISED MARCH 2006 Attachment 2.05.6(3)(b)(v)-1-10 <br />