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F Irrespective of these possible areal changes, regrading activities will establish • approximately [he contours shown on Map M12 even though the actual regraded areas may no[ coincide exactly with the areas shown on the map. The majority of areas at Trapper Mine that have been mined or will be mined are on the north slope of the Williams Fork Mountains. As demonstrated by the post- mining topography map, mining and subsequent regrading operations will not affect the overall slope of the land. The final postmining graded slopes will not be uniform, but they will approximate Che general nature of the premining topo- graphy. The final slopes will not be steeper than the premining slopes in any general area, and they will be graded to the most moderate and favorable gradi- ents practicable to promote stability and effective revegetation. On occasion, in order to maximize coal recovery, overburden may be removed by other than draglines. The material will be placed on mined-out areas or at the ends of a cut on areas which have been stripped of topsoil, but not otherwise disturbed. Once the m ining operation necessary for coal removal is complete, these spoil piles will be handled in such a fashion that they blend into and com- • element the surrounding pos[mine topography. Regrading will continue to be perforr ment with occasional assistance from steeper than one vertical to three areas where [he original slopes were essary in these instances. red predominantly by dozers or similar equip- the draglines. Regraded slopes will not be horizontal ~Iv:3h) except For a few small steeper. Slopes up to 1v:2.25h may be nec- From past experience, this type of regrading results in stable ground upon which further reclamation ac[ivites such as topsoil replacement and revegetation are readily accomplished. Moreover, the final regraded topography blends into the surrounding natural ground. An .important aspect of regrading activities ChaC complements spoil stabilization ~is [he re-establishment of drainage patterns similar to [hose before mining with REVISION 3-42 APP V DATE ~~r/°7 ir„o-T~zr. ~:~ ..