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be an integral, ongoing portion of the mining operation. The Lift B material will consist of suitable <br />material selected from the upper bench and is essentially the same as the uppermost four foot <br />of regraded spoil as described in an earlier section. <br />Topsoil Storage. When the direct haul of topsoil is not feasible, the topsoil will be stored in <br />approved stockpiles (see Map 2.05.3-1, Operations Plan New Horizon 2). Stockpiling of topsoil <br />will be required for topsoil removal in the initial box cut, haul road, spoil stockpile areas, sediment <br />pond, shop area, and final piUhighwall reduction areas, Topsoil stockpiles will be located in <br />areas that will not be disturbed or contaminated by the ongoing mining operation and where the <br />stored topsoil will not be lost to wind erosion or surface runoff. When a topsoil stockpile is <br />placed, it will not be moved until soil is needed for distribution on graded areas, or with DMG <br />approval, is consolidated into other existing stockpiles. Stockpile locations were also evaluated <br />and selected to minimize scraper travel distance, to reduce equipment cost, and to increase <br />efficiency. <br />Three classes of topsoil stockpiles, one for irrigated/pasture and one for dryland pasture will be <br />established as well as one for mixed irrigated/dryland pasture. Irrigated pasture/ hayland topsoil <br />• stockpile (70B, D70B, 30C, 30C-A, 30C-A-1, 30C-A-2: 1988, 1996) (98A, 98D, 98E, 98F, and <br />98G: 1999) locations will include two piles; one for first lift material (A, Bw and Bt horizons) and <br />the other for second lift material (Bk and C horizons). Dryland pasture topsoil stockpiles (1 E, <br />1 EW, 1 E-A, 20C, 20C-A: 1988, 1996) (98B, and 98H: 1999) will have one pile for a single lift of <br />mixed material (A, B, and C horizons). Mixed irrigated/dry pastureland soil map unit 98C (1999) <br />will include two piles; one for first lift material (A, Bw and Bt horizons) and the other for second <br />lift material (Bk and C horizons). <br />Mine personnel are instructed that topsoil stockpiles are not to be disturbed or contaminated. <br />Signs will serve as continuing reminders to personnel that stockpile areas are to be preserved <br />and undisturbed. <br />Any topsoil stockpile which will remain in place less than 90 days will not be revegetated. The <br />surface of each pile will be left in a roughened condition to retard wind and water erosion. A self- <br />contained V-ditch or berm will be constructed around the perimeter of the stockpile to prevent <br />• (Revised (3/iz/o21 2.05.4(2)(d) - 12 <br />