2014-05-07_PERMIT FILE - C1996083 (2)

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Volume III, Tab 7 stony sandy clay loam is recommended for salvage as Topsoil, and the underlying 14 inches as Subsoil. Rock fragment content increases below about 30 inches in depth to over 35 percent and is considered too much to recommend for salvage. 2.2 Map Unit 2: Meadow-Mtn Shrub stony sandy clay loam, a typic Haplargid Map Unit 2 (Meadow-Mtn Shrub stony sandy clay loam, a typic Haplargid) is mapped largely on areas dominated by the "Mountain Shrub" vegetation community. The "Meadow-Mtn Shrub" soil unit is moderately deep (20 to 40" to bedrock) to deep (40 to 60" or more to bedrock) and well drained. It is both nonsaline and nonsodic and is forming in colluvial slopewash deposited from upslope positions. Map Unit 2 is suitable for salvage to a depth of about 28 inches, which is very consistent with the 28.3-inch salvage recommendation for Map Unit 2 as stated in the 1995 soil study (Champion, 1995). The "Meadow-Mtn Shrub" soil has moderate permeability and moderate available water holding capacity. The effective rooting depth is 28 inches or more. Runoff is medium and the water erosion hazard is moderate to severe. In a typical profile, the soil has a stony sandy clay loam surface layer about 2 inches thick. The argillic "Bt1" upper subsoil layer is also a stony sandy clay loam about 5 inches thick (from 2 to 7 inches in depth). The argillic "Bt2" lower subsoil layer is a stony sandy clay loam about 11 inches in thickness (from 7 to about 18 inches in depth). Rock fragment content of the upper 18 inches is about 15 to 20% gravel, cobble, and stone size rocks. A substratum "BC" horizon exists from about 18 to 28 inches in depth. It has stony clay loam to sandy clay loam texture with about 25% rock fragments. The lower substratum "C" horizon below 28 inches is "skeletal" with greater that 35% rock fragments and very difficult to dig. The "Meadow-Mtn Shrub" soil was fully described and sampled for laboratory analysis at one representative site, S4. The sample location is plotted on the soils map and is within the projected Gob Pile disturbance area. Meadow-Mtn Shrub Typical Soil Sample "S4" Site and Profile Description: 16% slope, south aspect; "MS" Mountain Shrub vegetation community; slopewash colluvium over residuum at depth; moderately sloping alluvial fan; stable surface, no erosion in vicinity of sample site location; moderate permeability. A horizon - 0 to 2 inches; dark grayish brown (10YR 4/2) stony sandy clay loam with about 15% gravel, cobble, and stone-sized sandstone rock fragments, very dark grayish brown (10YR 3/2) moist; moderate medium granular structure; soft to slightly hard, friable, slightly sticky and slightly plastic consistence; many medium, fine, very fine, and few coarse roots; noneffervescent; from lab data: pH=6.3 (slightly acid), EC=0.5 (nonsaline), SAR=0.3 (nonsodic), OM=12.8% (weight loss on ignition method); gradual smooth 7 Exhibit 7 - 2007 Soil Survey Report