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' Mule Creek Gravel environmental Assessment ~ • Page 13 <br /> An interpretative photo of the mine under Alternative B is shown in Figure 2.2. <br /> Following is a detailed description of the activities associated with each phase of <br />' development. <br /> Pre-production site preparation activities aze designed primarily to secure the site <br /> boundaries, provide access for mining, storage and removal of gravel, and to implement <br />' drainage improvements. This phase of the proposed action would involve the following <br /> steps: <br />' 1. The entire site boundary would be fenced (4-strand barbed wire with metal <br /> posts) and signed to prevent trespassing and protect public safety. <br />' 2. The access road at the entrance to the site from Highway 67, located on <br /> private land, would be widened to approximately 40 feet, and new culverts <br />' and drainage improvements would be installed. <br /> 3. Highway 67 would be re-striped, in accordance with the State Highway <br /> Access Permit issued by the Colorado Department of Transportation, to <br />provide acceleration and deceleration lanes for vehicles entering and leaving <br /> the quarry. <br />' 4. An abandoned septic system and leach field located on private land at the site <br /> would be removed and reclaimed in accordance with state and local health <br />' regulations. <br /> 5. Drainage improvements including sediment traps, sediment detention basins, <br /> lining of drainage ways and silt fencing would be implemented to reduce <br />erosion and sedimentation. These facilities would be located on both private <br /> and National Forest System lands and would require ongoing modification <br />' and maintenance throughout the mining and reclamation phases of the project. <br /> 6. Upon completion of the drainage improvements, the area to the west of the <br />' base of the existing cut slope, located on both private and National Forest <br />System land, would be leveled and configured to provide areas for gravel <br /> storage and loading of gravel onto trucks for removal from the site. <br />' 7. The trees and shrubs located on National Forest System land, above and to the <br /> east of the existing cut slopes, would be removed. The trees would be sold for <br />t lumber or firewood and the tree limbs, shrub material, and stumps would be <br />ped and stored for use as mulch in the reclamation process <br />chi <br /> . <br />p <br />' 8. Topsoil would be removed, stockpiled, and stabilized with a sterile seed such <br />as regreen or other variety of sterile wheat or milo for use in reclamation. The <br /> stockpiles would be located on National Forest System land along the <br />' northern and eastern boundaries of the site and would be revegetated and <br />surrounded with erosion control fencing to prevent loss of the topsoil from <br /> erosion. <br /> <br />' Hydrosphere Rcsource Consultants, 1002 Walnut Suite 200, Boulder, CO 80302 <br />