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' EI~i~TT G ~ ~ <br />WATER INFORMATION <br />' WHITEWATER PIT <br />' The historic drainage of the site is to the north to Whitewater Creek and to the west to the railroad <br />borrow ditch. When mining is completed a pond with a surface area of approximately 5.6 acres <br />' will be formed with the water surface elevation approximately ten feet below the present ground <br />elevation. Al] surface drainage immediately adjacent to the pond will drain into it at the completion <br />of the mvtinQ. <br />' The water table on the site is approximately 10 to 12 feet below the existing ground. Dewatering <br />will be required to mine the sand and gravel deposit. Ground water will be pumped to Whitewater <br />' Creek. Dewatering of the pit will be done to meet the requirements of the Dischazge Permit issued <br />by the Colorado Department of Health. Depending on the silt content of the gravel deposit, a <br />settling pond may be required prior to discharge to Whitewater Creek. <br />' Best management practices such as silt fences and straw bales will be used during dewatering and <br />azound overburden piles to control sediment during mining and reclamation operations. <br />There aze no known potable water wells neaz the permit azea. The azea is served domestic water <br />by the Clifton Water District. The salinity of the ground water is to high for domestic water. A <br />' Well Permit will be applied for the State Engineer. <br />The estimated flow during dewaterine will be from 200 to 800 gpm depending on the time of the <br />' year and the amount of previously mined azea requiring dewatering. <br />The estimated quantity of water required during the mining operation is 3000 gallons per day and <br />' gpproximately 200.000 gallons annually. The water will be used for dust control. Ground water <br />will be filed for as part of the Well Permit. <br />1 <br />t <br />