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According to the CDMG's definitions, the change in disturbed area associated with PR-05 is accurate • <br />and does not include the undisturbed "minimal disturbance" areas. The acreages given below reflect <br />the shaded areas as shown on Exhibit 12-2 and the revegetation map, Exhibit 22-1, Postmining Vegetation. <br />The areas are conservatively overestimated for the reasons stated above. <br />Mine Area• <br />Acres Permitted for Disturbance 1,334.5 ac <br />Acres Actually Disturbed 1,248.8 ac <br />Tie-Across Haul Road: <br />Acres Permitted for Disturbance 200.0 ac <br />Acres Actually Disturbed 96.6 ac <br />Total Disturbed Area: <br />Acres Permitted for Disturbance 1,534.5 ac <br />Acres Actually Disturbed 1,383.8 ac <br />Backfillina and Gradino • <br />Rough grading will be performed with bulldozers, scrapers, graders and, occasionally the dragline. <br />Bulldozers and scrapers are used for final grading. SCC does not plan to remove any necessary reclamation <br />equipment from the area of operation until final reclamation is completed. Typically, the process of grading <br />begins with bulldozers building roadways into the ungraded spoil. Once sufficient access into the spoil is <br />provided, dozers or scrapers move the spoil material in the direction and the amounts required to achieve the <br />desired land form. The movement of spoil material is generally downslope, due to economic and safety <br />considerations. Completion of rough backfilling and grading will be attempted within 180 days following coal <br />removal unless specific variances are applicable. Backfilled materials shall be placed to minimize adverse <br />effects on ground water, minimize off-site effects, and to support the approved postmining land use. The <br />mine site will require a variance from contemporaneous reclamation for specific areas and situations as <br />described in Tab 19. <br />SCC's experience has shown that grading two spoil ridges simultaneously produces more desirable <br />reclamation results than grading one spoil ridge at a time. This is because the creation of graded slopes is <br />primarily dependent upon the ability to perform "area grading" versus grading one spoil ridge. Because of <br />many variables encountered in the overburden removal process, it is very difficult to predict the exact, final • <br />PR-05 2 Revised 04/06 <br />