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I Bluestone and Section 16 Wildlife Issues Report Western Aggregates, Inc. <br />I This property was previously permitted by the CMLRB for sand and gravel mining by the <br />Cooley Sand and Gravel Company. That permit was allowed to expire when Cooley <br />I removed the bond. The property is zoned Mineral Conservation (MC) in Jefferson County <br />and was previously granted a Special Exception to mine by the Board of Adjustment. Since <br />I WAI proposes changing the County approved plan, a Special Use application must be filed. <br />The South Boulder Diversion Canal, railroad spurs, water pipelines, and various power lines <br />I cross the: property. An electrical power substation and a natural gas metering station occupy <br />the nort]Zwest corner. Remains of former underground coal mining and surface clay mining <br />activitie:t are found in the center of the site. The Francis Smart Reservoir (RFP Lake) and <br />' Smart Ditch are located on the south portion of the site. There are several unpaved roads <br />traversing the property. The property is currently used for rangeland, water storage, and <br />' rights-of-way. <br />Surrounding land uses are as follows: <br />North: West RFP access road, RFP buffer zone, clay, sand and gravel <br />mining, and 2 industriaUoffice buildings. <br />' East: RFP buffer zone. <br />South: City of Arvada's municipal boundary, undeveloped rangeland, <br />and State Highway 72. <br />West: State Highway 93 and undeveloped rangeland. <br />' Proposed post-mining land uses are rangeland, water storage, industria]/business park, and <br />wildlife habitat. <br />I <br />2.2.2 MINING PLAN <br />I Mining Would progress at an average rate of 600,000 tons per year (based on current market <br />' projections). The gravel would be removed in lifts of approximately 20 feet in thickness, <br />maintaining setbacks from property lines and existing rights-of-way. This would be <br />accomplished by the same process described above for the Bluestone expansion. Only 1 lift <br />' would bt; required west of the Boulder Diversion Canal because the deposit is thinner there, <br />whereas the deposit is thicker east of the canal. In this way the full thickness of the gravel <br />layers would be recovered while minimizing the total disturbed acreage. Gravel recovery <br />' would advance to approximately 15 to 30 feet below original grade, depending on location. <br />Reclaimed pit slopes would be no steeper than 3:1 (horizontal:vertical). <br />I <br />' Western Eu~systems, Inc. 5 December, 1994 <br />