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112 APPLICATION PAGE 20 OF 35 <br />The ponds will allow suspended soils time settle from the groundwater <br />before being discharged offsite. The CDPS permit also requires monitoring <br />for specific pollution sources with quarterly Discharge Monitoring Reports <br />submitted to the State. <br />3) The operator shall provide an estimate of the project water requirements including flow rates and annual <br />volumes for development, mining and reclamation phases of the project. <br />During sand and gravel mining operations, the site will need to be dewatered to <br />access all of the sand and gravel. The groundwater collected within the mining areas <br />will be pumped into the 33 Road Ditch which is located west of the project area. This <br />ditch is owned and operated by the Grand Valley Drainage District. The groundwater <br />will be pumped from the mining operations using pumps with a discharge capacity of <br />approximately 0.6 cubic feet per second, during the mining of the sand and gravel, <br />and for a portion of the backfill placement. On a yearly basis, the applicant estimates <br />it will discharge 2.8 acre-feet of groundwater into the 33 Road Ditch, which flows into <br />the Colorado River. The total amount of depletions for the mining and reclamation <br />phases of the project is permitted to be 111. 16 acre-feet per year. The depletions <br />include the quantities used for dust control, gravel production, and evaporative losses. <br />Reclamation plantings for the site will not require an irrigated water source. <br />4) The operator shall indicate the projected amount from each of the sources of water to supply the project <br />water requirements for mining operation and reclamation <br />Water collected within the pit will also be used for dust control and gravel crushing <br />within the project site. This could amount to as much 24,000 gallons per day for dust <br />control, 46,000 gallon per day discharge water rate, and 10,000 gallons per day for <br />gravel crushing. <br />No irrigated water source will be required for reclamation on the site. The revegetation <br />seed mix will be planted during the wet spring or fall planting seasons. Natural moisture <br />will be used to establish and maintain the vegetation. <br />5) The operator shall affirmatively state that the operator has acquired (or has applied for) a National <br />Pollutant Discharge Elimination System (NPDES) permit from the Water Quality Control Division at the <br />Colorado Department of Health, if necessary. <br />The operator has acquired NPDES permit. See Exhibit M for a copy of the permit.