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bedrock. Soils of this map unit are well draining and have moderately rapid permeability. These <br /> soils have a high erosion hazard to wind and water. <br /> Map Unit MS <br /> Soils of this unit are the result of past mining operations. Areas where this unit is mapped are <br /> flat with varying degrees of volunteer vegetation and are truncated hills or ridges. These soils <br /> are very gravelly (35%), of sandy loam or loamy sand textures. Wind erosion and water erosion <br /> hazard is low because of the high gravel content. This very high gravel content causes the <br /> surface of these soils to become quite warm during summer months, and young grass or other <br /> flora seedlings have high mortality rates. <br /> As described in the mining plan, all topsoil will be salvaged and used in reclamation, although <br /> many areas have no topsoil from pre-law mining activity. It is expected that total salvage depths <br /> in the virgin areas will average 6 inches and there will be no differentiation between the A, B, or <br /> C horizons. Soils are simply too thin to try to salvage separately. Only minor pockets of suitable <br /> fines are available from the disturbed areas. Most pre-law stockpiled gravels were washed by <br /> past pre-law attempts to mine gold and the fine material for rooting no longer exists. <br /> In addition to salvage of soils from virgin areas, substitute topsoil will be salvaged from the <br /> settling ponds of both the gold and gravel operations on-site. These will be stored in stockpiles as <br /> described in the mining plan and as shown on Map C-2. All stockpiles will be immediately <br /> seeded using the temporary seed mix shown in the mining plan. <br /> Alma Placer Mine CretIAwait*Ad kl, utrs NA <br /> December 2017 1-4 <br />