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Pikeview Quarry Environmental Assessment Page 12 ' <br />A_Minin ' <br />Pha:>e 1 <br />Pre-production site preparation activities aze designed primarily to secure the site <br />boundaries>, provide access for mining, salvage and storage of topsoil, and to implement <br />drainage improvements. Phase 1 also includes benching and initial backfilling. This phase <br />of the proposed action would involve the following steps: <br />1. The proposed cliff (sloped high-wall) locations would be surveyed and the boundary of , <br />the proposed disturbance area would be field marked. <br />2. Bulldozers would be used to build temporary access roads to the top of the proposed , <br />disturbance area, west of the current permitted boundary. These roads would be located ` <br />south of the main drainage area thus not interfering significantly with the occasional ' <br />runoff to [he quarry during storm events. <br />Tree hluvest would be followed by salvage of topsoil with residual vegetation. ' <br />Vegetation would be stripped, topsoil would be stockpiled, and ripping and dozing <br />operations would remove the weathered granite and limestone materials until materials <br />requiring blasting would be encountered. These materials would be pushed northward <br />from each ridge to allow construction of access Toads for haul trucks. Topsoil stockpiles <br />would be located on the west end of the National Forest System lands, on the area not <br />affected by the layback but within the permitted 26 acres. Topsoil would be removed to ' <br />the layback area as reclamation operations take place. <br />4. Benches would be developed on both the north and central ridges through drilling and <br />blasting operations. Fill materials will be used initially to construct haul roads after the , <br />placement of culverts. <br />5. After the highest cliffs are constructed by pre-split drilling and blasting the granite in the ' <br />ridges :tt the western edge of the mining azea, benching and slope backfilling would <br />begin on the slope below. Slopes would be no steeper than 2:1. , <br />6. The placement of topsoil donated by the community and stockpiled at the quarry for use <br />in reclamation on private land would be placed after the completion of each 30-40 <br />vertical feet of slope. No large amounts of donated topsoil will be used on National <br />Forest System lands. Small quantities of donated topsoil with similar characteristics and <br />materials as the existing topsoil can be used as soil supplementation on National Forest <br /> <br />System lands. Castle Concrete will make efforts to screen the donated topsoil to comply ' <br />with Forest Service requirements. <br />7. The sequence presented in steps 5 and 6 would occur along the entire western slope of ' <br />the expanded quarry. <br /> <br /> ' <br />Hydrosphere Resource Consuluinls, 1002 Walnut Sveet Suite 200, Boulder, CO 80302 <br /> 1 <br />