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The Augmentation Plan which has been submitted includes both evaporative losses which will <br />be incurred upon completion of mining as well as industrial uses of the water for such purposes <br />as road watering as needed, crushing/screening operations, washing operations, and moisture lost <br />in mined material. The following text describes the uses of the water as well as how it will be <br />augmented. <br />Depletions <br />Two scenarios exist for depletions: <br />1.During Mining <br />During the mining phase, losses will occur in three areas: <br />Depletions for moisture lost in the mined material has been calculated to be 4% of the material <br />mined below the water surface level. It is estimated that 175,000 tons of material will be mined <br />below the water table per year. Assumptions are that mining will occur year round for athirty- <br />yearmining period. It has been calculated that moisture will be lost in the mined material in the <br />amount of 0.28 acre-feet per month with a total of 3.36 acre-feet per year. <br />Depletions for gravel washing operations have been calculated to be 500 gallons per day based <br />upon previous experience. It is expected that the gravel washing operations will be in operation <br />a maximum of 52 weeks per year and 5 days per week. This would result in a consumption of <br />0.34 acre-feet per month with a total of 4.08 acre-feet per year. <br />Dust will be controlled by both magnesium chloride and water. Water will only be used to spot <br />water between applications of magnesium chloride in order to eliminate any problem dust <br />areas. 3.0 acre-feet per year will be allocated to dust control, or 0.25 acre-feet per month. <br />Total annual depletions from the gravel mining operations are estimated to be 10.44 acre-feet <br />per year during the mining phase. <br />Anderson Pit February OS G-3 <br />