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' <br />Pikeview Quarry Environmental Assessment Page 14 <br />T , <br />1. <br />he proposed mining process would allow reclamation on slopes of 2:1, with the <br />exception of cliffs. To the extent practical, the post-mining contours will be shaped t~3 <br />simulal.e natural topographic conditions. <br />2. Prior to mining, lazge trees would be harvested. The applicant would be allowed to <br />purcha:>e tree materials larger than 4 inches in diameter. Slash, brush and residual plant ' <br />materials on the National Forest System lands would be stripped along with the topsoil <br />in order to provide better stabilization during the reclamation. <br />N 1 <br />3. Topsoil on <br />ational Forest System lands would be stripped and stockpiled in two lifts. <br />The upper lifr with the residual organic debris would be separately salvaged and stored <br />from the lower lift. The subsoil would be stockpiled separately. The selective separation <br />of the topsoil and subsoil should be conducted in the most efficient and safe manner. <br />The rernaining materials (limestone and weathered granite) would be used throughout. <br />the entire reclaimed azea, as needed. ' <br />4. Topsoil. salvaged from National Forest System lands will remain on those lands at all <br />times during the mining process. Large quantities of donated topsoil could be used on ' <br />private lands but not on National Forest System lands. Small quantities of donated <br />topsoil with similaz characteristics and materials as the existing topsoil can be used as <br />soil supplementation on National Forest System lands. Castle Concrete will make , <br />efforts to screen the donated topsoil to comply with Forest Service requirements. <br />5. Reclamation grading, including slope backfill, topsoil placement, and planting would ' <br />proceed from the west concurrently with mining (downslope) to the east. <br />6. Sloped back-walls would be created on each bench with staggered drilling depths. ' <br />Then, decomposed granite and limestone (if existent) would be used as backfill, which <br />would create a subsoil of approximately one to fifteen feet thick. This subsoil would be <br />stable because granite does not lose strength with moisture and the slope backfill is ' <br />supported with the stable underlying benches. <br />7. Excess granite materials removed from National Forest System lands would <br /> <br />immediately be moved to the north end of the layback area to begin construction of the ' <br />northern access road. This activity would continue until that road is completed, most <br />likely vrithin 2 years of the start up. These materials would be removed by bulldozer. , <br />8. The topsoil placed on the disturbed areas would be limited to a maximum thickness of <br />one foot in National Forest System land and two feet on private land. Average topsoil <br /> <br />thickness should be between six inches (the minimum for successful grass , <br />establishment) and one foot. With time, some of the topsoil materials are expected to <br />migrate into the underlying backfill materials and improve moisture retention and tree <br /> <br />root development. ' <br />9. Areas covered with topsoil would then be seeded following mechanical roughening of <br /> <br />the surface crust, if necessary. Seed would be broadcast by hand. Raking using metal- ' <br />Hydrnsphere Resource Consultants, 1002 Walnut Street Suite 200, Boulder. CO 80302 <br />1 <br />