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The operation plan, which had not been discussed in detail <br />in the Permit, will result in the improved 'distribution of <br />topsoil and subsoil in the 1983 and 1984A pits. Mining will <br />begin in the northeast part of the 1983 pit where the new haul <br />road will enter. Prior to removing any topsoil from the pit <br />area, the temporary overburden stockpile (TOS) area will be <br />cleared of topsoil and subsoil. The topsoil and subsoil will be <br />cleared separately and will be placed in separate areas to form <br />the base for future topsoil and subsoil piles. From Map 8 <br />(presented in reduced form in Figure 6.1), the TOS covers the <br />area of a circle 260 feet in diameter. The amounts of topsoil <br />and subsoil in this area to be removed are 650 and 2290 cubic <br />yards, respectively. These volumes are obtained as follows: <br />Topsoil: Pi x (260**2) x 4" x lc~u.~d. 650 c.y. <br />T ~'f"/' 27 cu.ft. <br />Subsoil: 14"/4" x 650 = 2290 c.y. <br />Once this step is completed, the pit will be opened, and the <br />topsoil and subsoil from the opening will be segregated and <br />placed in the appropiate stockpile. From this point, live <br />handling of the topsoil and subsoil is anticipated, resulting in <br />little, or no activity, at the stockpiles. The variation in <br />soil horizon depths that is indicated by the sampling program <br />may result in drawing from the stockpile if shallow horizon(s) <br />are encountered, and conversely, material will be added to the <br />stockpile if more than average horizon thickness is encoutered. <br />The pit will be about 320 long by 100 feet wide and will move <br />north to the pit boundary before turning south (Figure 6.2). <br />The north-south pattern will be continued through the pit. The <br />