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~) Consumptive use for the asphalt plant, concrete plant and the screening/crushingptant dust <br />. control sprays are expected to be 29S acre-feet per year. <br />A summary of consumptive uses is given below: <br />Scenario 1 - During_Mining <br />s T e Basis Acre-feet/ r <br />Sediment Pond Evaporation NOAH Evap chart 4.58 <br />Gravel excavation retention tonnage mined 12.32 <br />Dust Control -Roads Tonnage and road use 19.00 <br />Asphalt Plant Crusher/Screen Plant/Concrete <br />Plant Historic 29.50 <br />Totals 65.4 <br />Scenario 2 -After Minine <br />e a is a-f et/ r <br />Lake Evaporation NOAA Evap chart 430.5 <br />Totals 430.5 <br />The numbers above are for worst case consumptive use since the lake is calculated at maximum <br />surface area. These amounts of water have been used in the gravel well permit application with the <br />Colorado Division of Water Resources. <br /> <br />15 Road Pit 10/02 35 <br />