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2. PIT PUMPING AND WATER DISCHARGE <br />Since the mine will encounter water in the mining operation below 5-12 feet of excavation, pit <br />pumping is needed. A diesel powered pump will be placed at the low point of the pit, from which <br />PVC pipe will deliver the water to the sediment pond. Pumping is expected [o be from 1000 to <br />2000 gallons per minute during the initial stages and after one month, the rate should drop to less <br />than 700 gallons per minute. Gravel filter berms will be used in the pit itself to reduce <br />sedimentation and the 1 acre sediment pond will further reduce sediment for discharge. The pond <br />will have a manually operated gate valve structure for controlling the discharge. <br />Fruita Marketing and Management, Inc. has a fully permitted dischazge permit (CO-0046175) <br />specifically for sand and gravel mining of [his site. As part of this permit, as well as [he Waste <br />Management Contingency Plan, water sampling and monitoring will ocwr to ensure that no <br />contaminated water leaves the site. The pond discharge enters an existing wide ditch on the FMM <br />property which flows west to Reed Wash, which enters the Colorado River a short distance <br />downstream and west of the permit area. If testing or visual observation shows that the water may <br />be contaminated, the discharge structure at the pond will be closed and no water will be allowed [o <br />leave until remediation occurs. <br />3. WATER CONSUMPTION FOR THE OPERATION AND WATER RIGHTS <br />Since the mine will encounter water in the mining operation below 5-10 feet of excavation, and a <br />permanent lake will be left as part of the reclamation plan, it is demonstrated in this section that <br />there are sufficient water rights for this operation and the reclaimed Iake after mining is completed. <br />A welt permit has been applied for with the Division of Water Resources. Since the Colorado River <br />has unused water in this area, an augmentation plan is not needed. The well permit will cover pit <br />pumping as well as all consumptive uses for the operation. During the mining stage of the project, <br />consumptive uses will be limited to the evaporation from the sediment pond, road watering, plant <br />water sprays, and gravel retention. After mining, the consumptive use will be lake evaporation. All <br />consumptive uses are shown below: <br />Gilsonite Pit 10/02 _ 24 <br />