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adjacent north and south slopes by creation of a shallow drainage divide roughly in the center of the <br /> Glory Hole Pad. The divide will trend from east to west. Excavated benches exist at the eastern and <br /> western margins of the Pad. These will be graded toward the center of the Pad at a slope of no steeper <br /> than 3H:1V. The northern and southern margins of the Glory Hole Pad will be excavated to a 3H:1V <br /> slope for a downslope distance of no less than twelve feet (12'). The excavated material will be placed <br /> near the center of the Pad and graded to achieve positive drainage to the north and south, however in <br /> no case shall this material be placed at slopes steeper than 3H:1V. Upon completion of grading <br /> operations, the Glory Hole Pad will be ripped to a minimum depth of eighteen inches (18") parallel with <br /> the contour. Rippers shall be spaced on the machine no farther apart than thirty inches (30"). <br /> Stockpiles B and M <br /> Grading of the two stockpiles will be treated as one task for purposes of this portion of the Invitation for <br /> Bid. The goal of this task is to eliminate steep, erosive slopes and to encourage controlled drainage <br /> from both of the stockpiles. Refer to Figure 3, Stockpiles B and M Cross Sections, and Map 5, Stockpile <br /> Topography and Map 6, Idealized Post Reclamation Topography, Stockpiles. <br /> Grading shall proceed as follows: <br /> Initially, coal fines which are accumulated on the bench of each stockpile shall be graded against the <br /> face of the back wall at each area prior to beginning back wall reduction operations. No coal fines will <br /> remain on the benches immediately prior to commencing back wall reduction operations. <br /> Grading shall begin at the northern portion of Stockpile B, and progress south across the Stockpile <br /> yard, Road A and through the Stockpile M yard. All slopes in the area will be graded so that no slope <br /> segment exceeds 2.5H:1V. The fill shall be compacted every six feet (6') as measured from the vertical, <br /> by sheeps foot roller. <br /> Grading of Road A remnant shall occur so that the slope of the road surface is to the south at a cross <br /> sectional slope of five percent (5%). The inside ditch shall be filled as part of the grading operations. A <br /> portion of Road A shall remain after grading of both stockpiles is completed so that access to the mine <br /> site west of the stockpiles area is unimpeded. A minimum twenty feet (20') wide road running surface <br /> shall be maintained during and after reclamation operations. Access to portions of the mine site west of <br /> this project area must be maintained throughout performance of the project. <br /> Near the eastern margin of Stockpile M are two tunnels which were described in Task 2, Demolition. <br /> These tunnels were partially filled with concrete rubble during Task 2, Demolition. The outside most five <br /> feet (5') of each tunnel was not backfilled with concrete rubble in Task 2, Demolition. Each tunnel will be <br /> filled the last five feet (5') with earthen materials from top to bottom and side to side. The materials shall <br /> be packed and compacted as necessary to minimize the potential for sloughing. Earthen materials <br /> shall be placed so that the backfilled tunnels blend with adjacent topography, and so that no backfilled <br /> slope is steeper than 3H:1V when completed. This backfill shall be compacted every six feet (6') as <br /> measured from the vertical, by sheeps foot roller. <br /> The southern perimeter of Stockpile M contains material suitable as a topsoil substitute. This material <br /> shall be pushed north across the stockpile floor at an average depth of six inches (6") after grading and <br /> ripping is completed. However, no soil shall be placed in the location of the drainage to be constructed <br /> during performance of Task 8, Channel Construction. <br /> 11 <br />