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Irrespective of possible areal changes, regrading activities will establish approximately the contours shown <br /> on Map M12 even though the actual regraded areas may not coincide exactly with the areas shown on the <br /> 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 slopes <br /> will not be steeper than the premining slopes in any general area, and they will be graded to the most <br /> 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,overburden <br /> may be removed by other than draglines. The material will be placed on mined-out areas, at the ends of a <br /> cut on areas which have been stripped of topsoil or in areas designated as permanent fill locations, Once <br /> the mining operation necessary for coal removal is complete, this material will be handled in such a fashion <br /> 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 1 v: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 the predominant drainage characteristics <br /> reconstructed. Seventeen of the twenty drainageways anticipated to be disturbed and/or reconstructed in <br /> this permit term drain a watershed of less than one square mile above the uppermost sediment control <br /> pond in the drainage. All of the drainages impacted by mining in this permit term are ephemeral. The <br /> seventeen smaller watersheds are drained by West Pyeatt(256 acres), Middle Pyeatt(411 acres), Grouse <br /> (254 acres), Sage (109 acres), Oak (437 acres), Ute (81 acres), West Flume (209 acres), Middle Flume <br /> (512 acres), East Middle Flume (465 acres), East Flume (73 acres), Deal (176 acres), Deal 2 (29 acres), <br /> Deacon (398 acres), Jeffway 1 (86 acres)and Jeffway 2 (73 acres). The larger watersheds are No Name <br /> (1,379 acres), Johnson (1,359 acres), and East Pyeatt(1,157 acres). <br /> 3-42 Revision: P P, <br /> Approved: <br />