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2.05-54 Rev. 11/96- PR07; 10/20 TR148 <br />minimizes dilution as far as is technologically and economically feasible. Seedbed quality material <br />is the final reclaimed soil surface. Table 36 presents the topsoil availability in the surface facilities <br />and refuse disposal areas. <br /> <br />Topsoil in the affected areas is stripped and either applied to surfaces ready for reclamation or <br />stockpiled for other use as shown in that table. Subsoil, not fully suitable for seedbed material, is <br />also excavated, as necessary, for construction purposes. Topsoil consisting of all of the A horizon <br />and part of the B horizon of each soil series present is stripped before construction begins and <br />replaced following operational activities. <br /> <br />Evaluation of the soils present in the permit area indicates the upper portions of the B horizon are <br />suitable for use as seedbed quality material. Lower portions of the B horizon were unsuitable due to <br />the presence of heavy clay and/or coarse rock fragments. Mountain Coal Company can meet the <br />final land use and bond release criteria without segregating A from B horizon material since both <br />are good seedbed quality. This is also true for the soils in the Sylvester Gulch Facilities Area <br />(Exhibit 27A). <br /> <br />The amount of stripped topsoil has been calculated to be adequate to cover the surface disturbed <br />area of the main mine facilities with a minimum depth of 12 inches of seedbed quality material, the <br />refuse disposal area with a minimum depth of 9 inches (or approximately half of the total soil cover <br />per the approved variance), and a minimum of 12 inches to be replaced on the Sylvester Gulch <br />Facilities Area. A Topsoil Assessment conducted in 1981 and verified in 1984 confirmed the <br />availability of sufficient quantities of topsoil to reclaim the disturbed areas at West Elk. Another <br />topsoil survey and balance was completed in 1993, again confirming sufficient topsoil quantities. <br />Therefore, there is no need to salvage subsoil in the form of underlying B and C horizon materials. <br />Any topsoil remaining after the above described amounts have been replaced over the disturbed <br />areas, will be applied to slope faces and other areas subject to high erosion hazard potential before <br />final seeding operations begin. <br /> <br />Table 39 Temporary Stabilization Seed Mix <br /> <br /> <br /> <br />Common Name <br /> <br />Species Name <br /> <br />Variety <br /> <br />Character1 <br /> <br />Seeds/Lb. <br /> <br />Seeds Sq. <br />Ft. <br />Seed Rate <br />lbs. <br />(PLS)/ac2 <br />Graminoids <br />Bluebunch wheatgrass Agropyron spicatum Secar N, C, B 145,000 4 1.20 <br />Pubescent wheatgrass Agropyron tricophorum Topar I, C, S 90,000 10 4.84 <br />Smooth brome Bromus inermis Manchar I, C, S 140,000 15 4.67 <br />Western wheatgrass Agropyron smithii N, C, S 125,000 7 2.44 <br /> <br />Forbs <br />Cicer milkvetch Astragalus cicer Monarch I, C, L 130,000 10 3.35 <br />Small burnet Sanguisorba minor Detar I, C 42,000 4 4.15 <br /> <br />Totals 50 20.65 <br />Notes <br />1. Character codes: N = native, I = Introduced, C = Cool-season, B = Bunch grass, S = Sod-former, L = Leguminous <br />2. Rates proposed are for drill seeding, broadcast rate or hydroseeding 2X the rate. Table 39A <br />