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3. Water Consumption for the Operation and Water Rights <br />A Gravel Well Permit and Substitute Water Supply Plan (SWSP) is being submitted to the <br />Division of Water Resources. Mining will not commence below the water table until the Gravel <br />Well PermiUSWSP have been approved. <br />The SWSP which is being submitted includes both evaporative losses which will be incurred <br />upon completion of mining as well as industrial uses of the water for such purposes as road <br />watering as needed, crushing/screening operations, washing operations, and moisture lost in <br />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 300,000 tons of material will be mined <br />below the water table per year. Assumptions are that mining will occur yeaz round for <br />approximately 11.9 yeazs. It has been calculated that moisture will be lost in the mined material <br />in the amount of 0.74 acre-feet per month with a total of 8.83 acre-feet per yeaz. <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 20 weeks per year and 5 days per week. This would result in a wnsumption of <br />0.15 acre-feet per month with a total of 1.8 acre-feet per yeaz. <br />Colona Pit November 06 G-4 <br />