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1 <br /> <br />1 <br />' MINING PLAN <br />E%HIBIT D <br /> T}~e Distel Farm Resource will be used by C & M Companies as a <br />' source for concrete sands, fill material, and ag gregates. The <br /> a~~plicant owns a portion of the property and holds mineral leases <br />' for the remainder. The general <br />a:~ong St. Vrain Creek, south of location of the <br />State Highway 119 mining area is <br />and west of Del <br /> Camino. The total area of prope rty to be mined is 114 acres. <br />' Tl~e Distel Farm property will be mined using dry mining <br />techniques. Any groundwater intercepted during the mining <br />operation will be pumped from the open pit and discharged to St. <br /> Vrain Creek. A stationary plant site will be located near the <br />' s~~utheast corner of the permit for processing and stockpiling <br /> material. If groundwater inflow into the pit becomes to <br />' v~3luminous <br />methods to to handle efficiently the operator <br />wet mining by dragline. may change mining <br />The material to be extracted on this property is sand and gravel. <br />' The nature of the stratum is typically a layer of topsoil ranging <br />from 0 to 7-1/2 feet in thickness overlaying a sand and gravel <br />deposit that ranges in thickness from 1 to 17 feet. A claystone <br /> bedrock is encountered from 6 to 19 feet below ground. There are <br />' iinterspersed lenses of clays and silts deposited by St. Vrain <br /> Creek. Bore logs taken in October, 1983 encountered groundwater <br /> at a depth of 4 to 8 feet below the ground surface. Given that <br />' t!ne borelogs were taken at a late time period of the year, it is <br /> reasonable to assume groundwater can be much higher during the <br /> spring and summer months. <br />' The sand and gravel in this area is cataloged by t he Colorado <br /> Geologic Survey in a 1974 report titled Sand, Gravel and Quarry <br /> Resources; Colorado Front Range Counties. St V rain Creek <br />' deposits are recognized as a valuable mineral resour ce and the <br /> aggregates are classified as high quality. <br />' Mining will be done by phases. The land area opened for mining <br />will be limited to only that necessary to satisfy market demands. <br />Mineral extraction is currently projected to be 200,000 tons per <br />' year. Average material depths range from 5 feet to 17 feet of <br />material. Maximum disturbance in the open pit will be limited to <br />8 acres. <br />1 <br />t <br />1 <br />D-1 <br />