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5.5 Asphalt plant operation <br />The asphalt plant uses water only during production of CDOT highway asphalt mix with lime. <br />This is estimated to be 15 days a year for about 20,000 tons per year. This comes out to about <br />80,000 gallons or 0.26 acre feet per year. <br />5.6 Potable water for drinking, <br />Potable drinking water is estimated to be 50 gallons per month, but this water will be purchased <br />commercially and will not be considered in the consumptive use calculations. <br />Hayden Gravel Pit, May 2013 G -5 <br />