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66E-Skylick Silt Loam. The Skylick silt loam soil is located on the steep, upland, • <br />mountain sideslopes and benches to the west of Bond Drainage. The soil profile is deep <br />and well developed with a thick, dark colored surface horizon and subsoil clay <br />accumulation. The soil has a lower subsoil clay content than Routt. <br />The recommended topsoil salvage depth is based on the entire soil profile depth since all <br />horizons have favorable chemical and physical properties. The mean in situ suitable <br />topsoil depth for 7 profiles is 5.0 feet. <br />The 66E map unit consists of 75 percent Skylick with 10 percent Wineveda, 10 percent <br />Routt,and 5 percent Coutis inclusions. A 4.0-foot mean salvage depth was used for this <br />map unit to calculate topsoil volumes listed in Table 9-7-1 and Exhibit 9-1. This topsoil <br />salvage depth figure accounts far topsoil loss during salvage due to brush clearing and <br />steep slopes. <br />P-Pond Area. The Pond area map unit includes the pond, dam, and embankment located in <br />Bond Drainage to the north of Pond 008. No suitable topsoil is available to be salvaged <br />from this area (Table 9-7-1 and Exhibit 9-1 ). • <br />Topsoil Salvage Areas <br />Topsoil will be salvaged from the projected disturbance area shown on Exhibit 12-1, <br />Operations Plan. Table 9-7-1 lists the affected area of each soil map unit within the <br />proposed East Wad ge Extension area and the topsoil salvage thickness, volume, and <br />limitations for each unit. <br />A one-lift soil handling operation will be utilized for all soil map units within the <br />projected disturbance area. This method of topsoil removal is desirable rvithin the East <br />Wadge Extension Area because the soils are either shallow (Splitro) to moderately deep <br />(Wineveda) and have minimal subsoil profile development (thick, organic-rich "A" horizons <br />directly overlie sandstone bedrock), landscape slopes are steep to excessive (equipment <br />mobility and efficiency is severely restricted), mixing will provide a more erosion <br />resistant and stable seed-bed surface (Skylick), and/or only the "A" horizon is <br />salvageable (A aberg, Binco, Buckskin, Capo, and Routt) due to excessive clay contents in <br />lower horizons. • <br />9-7-8 Revised 05/16/88 <br />