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Section 8166.102(e) Continued. <br />• Kerr Coal will conduct final grading and shaping of the mined areas to produce as <br />many flat surfaces with short slopes as possible and will leave the surface in a rough <br />or furrowed condition on the contour. The resulting undulating surface will help to <br />prevent soil slippage, increase rainfall infiltration needed to promote plant <br />establishment and growth, reduce runoff potential, and minimize erosion while <br />providing topographic cover essential to wildlife. Smooth compacted surfaces with <br />long slopes will be avoided by grading along the contour and leaving the surface in a <br />rough state so erosion and subsequent sedimentation problems are reduced. <br />The final grading before topsoil placement will be done along the contour by dozers <br />and motor graders unless site-specific slope conditions would cause a safety hazard <br />to the operator. In the event that soil is not replaced on the regraded surface within <br />two weeks of final grading, Kerr will rip the graded surface in advance of soil <br />placement. The final surface grades as shown on Map 37a, Kerr Mine Area <br />Postmining Topography, will assure long-term stability and provide for effective <br />drainage. The final regraded slopes will be surveyed to assure they are within <br />acceptable limits similar to the original contours. <br />. Following the cessation of operations, facility removal and cleanup at the tipple, all <br />disturbed lands in the Tipple Area will be leveled and graded to their approximate <br />original, contour, except that the existing perimeter berm will be retained to provide <br />long-term drainage control. Since the area has little topographic relief and little <br />excavation, filling, or grading was done in construction of the facility, the extent of <br />final grading will be minimal. <br />The Tipple Area will be graded using bulldozers and motor graders. It will be <br />smoothed to blend with the surrounding undisturbed area consistent with the original <br />topography as shown on Map 35, Kerr Tipple Area Premining Topography; Map 36, <br />Kerr Tipple Area Postmining Topography; and Map 39, Premining and Postmining <br />Cross Sections (Kerr Tipple Areal• <br /> <br />TR-19 816-135 Revised August 1999 <br />