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Cmc CONTINENTAL MATERIALS CORPORATION <br /> chips, compost, or other available organic material is mixed with the soil to provide the necessary <br /> nutrients. Imported topsoil and growth medium piles will be maintained near the plant area and <br /> hauled to the reclaimed slopes when they are ready for final planting and seeding. CMC commits <br /> to importing and stockpiling 56,000 cubic yards of topsoil or suitable soil for growth medium in <br /> 2020. Stockpiles will be stabilized with vegetative cover or other means to protect from erosion. <br /> Subsoil Generation <br /> Subsoils will provide a plant growth medium between the regraded materials and the topsoil. The <br /> weathered granite will be stockpiled and mixed with any available limestone fines or chipped <br /> woody materials to extend the rooting zone for plants. Highly weathered granite that is excavated <br /> during grading will be stockpiled, when conditions are suitable for safe operations, for use as <br /> subsoil between the re-grade and the topsoil. Alternatively, imported soil will be used for subsoil <br /> when available. <br /> Topsoil Application <br /> The Applicant will apply the salvaged topsoil from the site and imported topsoil from the public on <br /> reclaimed areas. Topsoil will be placed to a minimum thickness of 0.5 foot. A 1.0-foot thick <br /> subgrade of weathered granite will be placed over areas where shot rock remains at the surface; <br /> this is only expected to occur at the uppermost elevations of the graded slope considering the <br /> lower slopes will be constructed with fill dirt. Ideally, broadcast seeding should occur within five <br /> days of spreading the topsoil, otherwise mechanical roughening of the surface crust (formed by <br /> precipitation) may be needed prior to seeding operations. Topsoil will be applied to all disturbed <br /> areas, approximately 139.10 acres. Rock slopes with gradients steeper than 2:1 will be left as <br /> bare rock to mimic the topography and natural features surrounding the site, and approximately <br /> 2 acres will be left as a rock slope. Benches on the rock slopes will be topsoiled and vegetated. <br /> The Plan requires 112,000 LCY of topsoil, which will consist of on-site topsoil, imported topsoil, <br /> and growth medium. Additionally, topsoil may be generated onsite by mixing decomposed <br /> granite with wood chips and/or compost. <br /> CMC will discourage the donation of topsoil with weeds and will perform noxious weed <br /> management using backpack weed sprayers as needed. <br /> Revegetation <br /> Affected areas will be revegetated in such a way as to encourage a diverse, effective, and long- <br /> lasting vegetative cover that is capable of self-regeneration without continued dependence on <br /> irrigation, soil amendments, or fertilizer. Revegetation throughout the mine site will differ <br /> depending on surface ownership, elevation, and availability of water. The revegetation plan has <br /> not changed from the current plan. The western portion of the mine site is on National Forest <br /> System (NFS) lands. The 2001 EA sought re-establishment of a Douglas Fir- Lodgepole pine <br /> Pikeview Quarry Amendment 4 <br /> E-4 <br />