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• not be moved until soil is needed for distribution on graded areas, or with DMG approval, is <br />consolidated into other existing stockpiles. Stockpile locations were also evaluated and selected <br />to minimize scraper travel distance, to reduce equipment cost, and to increase 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 (706, 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 />1EW, 1E-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 lift <br />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 /> <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 loss <br />of the topsoil resource. <br />Any topsoil stockpile which will remain in place 90 to 180 days will be stabilized by utilizing an <br />annual grain (barley, oats or wheat) cover crop. The seeding rate will be 70 pound per acre <br />broadcast. <br />Protection and maintenance of "long-term" topsoil stockpiles will begin when a stockpile is <br />temporarily or fully completed and no more additions or withdrawals of topsoil are to be made <br />within a 180 day time period. Topsoil stockpiles will be stabilized primarily by perennial plant <br />establishment. The seed mixture, and seeding rate for long-term topsoil stockpiles is described in <br />the Revegetation Plan, Section 2.05.4 (2)(e). <br />• cxe~aeea is xov oz~ 2.05.4(2)(d)- 12 <br />