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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 ;>� ? t��ia '07 <br />