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• Quantity <br />Well No. (gal/year) <br />No. 5 Mine Well 2,418,000 <br />Plo. 9 Mine Well 525,000 <br />No. 4 Mine Well 1,280,000 <br />Total 4,223,000 <br />SEDIMENT POND EVAPORATION <br />The Empire Energy Mine site is located in a semi-arid environment; <br />therefore, very little water is contained in the sedimentation ponds, <br />except during brief summer thunderstorms or during spring snow melt when <br />evaporation losses are at their lowest. Therefore, water loss due to <br />evaporation from sedimentation ponds is considered to be insignificant. <br />• Coal Processing Consumption <br />Empire Energy has no coal processing facilities. Therefore, there is no <br />streamflow depletion due to coal processing. <br />Ventilation Consumption <br />The Empire Energy Mine site is located in an area of low humidity. It <br />is apparent that the air leaving the mine has a higher relative humidity <br />than the air entering. Therefore, some water used for dust suppression <br />underground evaporates and is lost through ventilation. Empire Energy <br />has estimated this loss to be 17,204,000 per year. <br />Ventilation Consumption <br />Mine Balance = 550,000 cfm <br />• Intake Air = 44°F 20% Saturation <br />Air Density = 0.0626 lb/cu-ft <br />-3- <br />