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bordering the mine plan adjacent area to the south is subject <br /> to severe landsliding. <br /> One spring exists in the Clear Fork of the Last Muddy <br /> Drainage adjacent area and is located in the NW4, SE4 of <br /> Sec. 14, T. 10S, R. 9OW on an intermittent drainage of Rock <br /> Creek. ' This is felt to be a landslide related feature <br /> occurring as seepage in a poorly drained area. <br /> Coal Basin Mine Affected Area, indicates this is a land- <br /> slide area (Tweto, 1978) . The change of topography from <br /> an even hillslope to an irregular drainage is also reflective <br /> of this landslide condition. <br /> There are no points of discharge from the Coal Basin Mine <br /> west of Huntsman Ridge, nor are any planned. The only planned <br /> surface development on the lease area in the East Muddy Creek <br /> watershed are the access roads to the test boring locations . <br /> Mining will occur beneath the base area at a depth of approximately <br /> 2000 ft . over a 40-year period. <br /> Drainage Description <br /> Drainages off the west side of Huntsman. Ridge are moderately <br /> steep , averaging about a 20% slope . Hillslopes are character- <br /> ized in places by an irregular topography indicative of land- <br /> sliding in the area. Vegetation consists of aspen, spruce, <br /> and scrub oak, with areas of open parks and meadows ; overall <br />