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999 <br /> 4y- 77- 4� <br /> MINING PLAN <br /> 1. For stabilization of the topsoil stock piles, a ditch will be cut <br /> at the toe and a contour furrow midway up the piles for run-off <br /> and erosion control . These stockpiles will be immediately seeded <br /> with the approved mixture. <br /> 2. On the Doagy No. 2, the soil is a Bouldery Clay Loam, Unit I with <br /> approximately four (4) inches of useable topsoil . Salvageable area <br /> of the waste dump will be approximately 2.5 acres which should yield <br /> 1340 cubic yards of topsoil . <br /> On the affected area of the JD-8 lease block the soil is an un- <br /> named Silt Loam, Unit IV with approximately fourteen (14) inches of <br /> useable topsoil and subsoil . Salvageable area of the waste dump <br /> will be four (4) acres which should yield about 7530 cubic yards of <br /> topsoil . To maintain quality growth media in the stockpile, color <br /> and alkalinity (pH 7.4-7.6) will be used to determine cut off depth. <br /> 3. Road construction in sagebrush parks will be avoided by using <br /> existing roads as shown on Exhibit C-1. <br /> 4. Potential for the Production of Leachates <br /> This discussion addresses the potential for the production of leachates <br /> from the waste rock piles and the probable characteristics of such <br /> leachates. Leachate is produced when precipitation infiltrates a <br /> I <br />