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1 <br /> <br />1 <br />1 <br /> <br />1 <br /> <br /> <br /> <br />1 <br /> <br />1 <br />1 <br /> <br />1 <br />1 <br />1 <br /> <br /> <br />EX"I~IT G <br />W.aT~R IlYb'OR'VIr1TION <br />SQARLVG EAGLE GROVEL PTT <br />he historic drainage oI the site is Iottn northeast to southwest. The irrieated pastures drain to the <br />base of the bluff located alone the south side of the pit area and then west to the Colorado River. <br />The riparian areas located along the north side drain to the north and into the River. During the <br />mining operation. surface drainage of the plant site and the areas being mined will be directed into <br />the excavated areas. When mining has been completed a lake with a surface area of approxtmately <br />102 acres will be formed with the water surface elevation 4 to ~ feet below the present ground <br />surthce elevation. Surface drainage azound the perimeter of the lake will drain into the lake. <br />The site is located adjacent to the Colorado River which contributes to the water table beine <br />approximately fora feet below the existing ground elevation. Dewatering will be required mine the <br />sand and gravel delwsit. Ground water will be pumped to [he Colorado River. A settline may be <br />required before discharge to the River. This will depend on the silt content of the deposit. A <br />Discharge Permit will be applied fur from the Colorado Depv-tment of Public Health and <br />Environtrtent. The estimated pumping rate will be from 200 to 1200 GPM, depending on the time <br />of the vear and the amoum oI previously mined area requiring dewaterine. <br />Best management practices such as the use of sit[ fences and straw bails will be used during <br />dewa[ermg; road cotts[ruciion and around overburden piles to control sediment. <br />The are no known potable water wells located near the pit area. Potable water is provided by the <br />Ute Water Conservancy District. <br />A VJeI] Pet?nit will be applied for from the Colorado Division of Water Resources. <br />The estimated water required during the mining operation is 3000 gallons per day. The annual <br />water requirements are 400,000 gallons. Ground water will be filed for to meet the water <br />requirements in the Well Permit Application. <br />1 <br />