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Irrespective of possible areal changes, regrading activities will establish approximately the contours <br /> shown on Map M12 even though the actual regraded areas may not coincide exactly with the areas <br /> shown on the map. <br /> The majority of areas at Trapper Mine that have been mined or will be mined are on the north slope of the <br /> Williams Fork Mountains. As demonstrated by the postmining topography map, mining and subsequent <br /> regrading operations will not affect the overall slope of the land. The final postmining graded slopes will <br /> not be uniform, but they will approximate the general nature of the premining topography. The final <br /> slopes will not be steeper than the premining slopes in any general area, and they will be graded to the <br /> most moderate and favorable gradients practicable to promote stability and effective revegetation. <br /> On occasion, in order to maximize coal recovery, or to manage geologic or geotechnical issues, <br /> overburden may be removed by other than draglines. The material will be placed on mined-out areas, at <br /> the ends of a cut on areas which have been stripped of topsoil or in areas designated as permanent fill <br /> locations. Once the mining operation necessary for coal removal is complete, this material will be handled <br /> in such a fashion that they blend into and complement the surrounding postmine topography. <br /> Regrading will continue to be performed predominantly by dozers or similar equipment with occasional <br /> assistance from the draglines, scrapers, or truck/loader operations. Regraded slopes will not be steeper <br /> than one vertical to three horizontal (1v:3h) except for a few small areas where the original slopes were <br /> steeper. Slopes up to 1v:2.25h may be necessary in these instances. <br /> From past experience, this type of regrading results in stable ground upon which further reclamation <br /> activities such as topsoil replacement and revegetation are readily accomplished. Moreover, the final <br /> regraded topography blends into the surrounding natural ground. <br /> An important aspect of regrading activities that complements spoil stabilization is the re-establishment of <br /> drainage patterns similar to those before mining with <br /> MAY 21 2013 3-42 <br />