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Hoisture Loss in Material <br />The proposed operation is expected to process approximately <br />100,000 tons of sand and gravel per year. The average moisture <br />content of this material at the time of shipment is around 4%. <br />This would be equivalent to 2.5 to 4.0 acre-feet per year. <br />Nash Water <br />Washing operations will require approximately 1,500 gallons per <br />minute. This water will be stored in a series of sediment ponds <br />and will be recycled. Preliminary estimates on consumption are <br />1.0 acre-feet per year. <br />Dust Control <br />Dust control will require the watering of haul roads at specified <br />intervals. The proposed operation will make extensive use of <br />field conveyors to move material to the plant. This reduces the <br />number of haul trucks as well as the length of haul roads. Haul <br />roads would be watered mainly from May through September (5 <br />months). The average application to the area would be 4,000 <br />gallons with a minimum of three applications per day being made <br />for 80 days per year. This would be equivalent to 3 to 4 acre- <br />feet per year. <br />Lake Evaporation <br />The reclamation calls for the creation of a lined reservoir. <br />This lining will either be in place prior to mining or it will be' <br />constructed in phases with the reclamation. The pit will be <br />operated in a dewatered state which will eliminate evaporative <br />losses during mining. Therefore, no replacement of lake <br />evaporation is necessary or proposed. <br />Along with the property, C & M Companies has also acquired rights <br />to Balmgartner wells 1 and 2. These wells are rather junior in <br />their appropriation date and may be used to augment a portion of <br />the water consumptive uses described above. In addition, C & M <br />Companies may purchase more senior water rights in the basin for <br />augmentation. These water rights would be approved by the State <br />Engineer and transferred for use at this site. <br />The dewatering of the pit during mining will require an NPDES <br />permit from the Water Quality Control Commission. This permit <br />will be obtained prior to any water being discharged into the <br />concrete ditch and the South Platte River. <br />G-4 <br />