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• <br />Extraction Operation <br />Areas to be mined will be dewatered. <br />Approximately six (61 weeks in advance of mining a trench will be excavated to <br />bedrock around the area to be mined (5 to 10 acresl. A pump will be installed at <br />the low point of the trench and the groundwater will be removed and discharged <br />into St. Vrain Creek. The dewatering activities will be addressed by a well permit <br />and plan of augmentation (Colorado Division of Water Resources) and by a NPDES <br />permit (Colorado Department of Water Resources) and by a NPDES permit (Colorado <br />Department of Health and Environment) for the discharge. <br />County Roads and Bridges to be Utilized/Transoortation <br />All aggregate materials will be hauled off the property by gravel haul trucks. The <br />ingress-egress point is shown on Exhibit C-2. The trucks will enter onto County <br />Road 15, travel south to County Road 26, west to County Road 13, south to State <br />Highway 119, and west to Interstate 25. <br />No more than five (5) to ten (10) acres will be worked at any one (1) time before <br />reclamation commences. <br />Time Table <br />,. <br /> <br />Phase 1 <br /> <br />28.54 .. <br />.~- <br />1.141.600.00 <br />.. <br />7.61 <br />Phase 2 46.47 2,251,298.00 15.00 <br />Phase 3 6.48 229,373.50 1.53 <br />Phase 4 4.85 159,877.60 1.07 <br />TOTAL 86.34 3,782,149.10 25.21 <br />• Assumes Production of 150,000 tons per year. <br />Average annual production is estimated to range from 150,000 to 300,000 tons <br />per year. Assuming 250 operating days per year and 25-ton capacity haul trucks, <br />the truck trips generated would be as follows: <br />