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SITE CONDT 10iTS <br /> r <br /> GENERAL <br /> The Mine 1 and 2 areas are formed on excavated rock surfaces which <br /> are inclined toward the highwall at 2 to 10 per cent slopes parallel to <br /> the plane of the westerly dipping coal seam. The pad area surfaces are <br /> composed of loose, fractured sandstone and shale bedrock of the Mancos <br /> Formation, coal spoil and excavated bedrock waste piles. Each pad area <br /> has been notched into very steep mountainous terrain with average natural <br /> undisturbed slopes that range from 70 to 100 per cent and occasionally <br /> in excess of 45 degrees. Disturbance of even small areas of 0.1 acres <br /> involve large exposures of barren slopes that are difficult to vegetate <br /> over extended time periods. Many slope areas are stable with a mint-mum <br /> apparent factor of safety. <br /> KILIZNLMER1 - PALD1 <br /> Mine number 1 pad area includes 2.38 acres of both excavated and fill <br /> surface. The pad surface is irregularly inclined south at 10 to 15 per <br /> cent grade. Pad width averages 60 feet and ranges in width from 40 feet <br /> to 100 feet. (Plate i an4 Plate 2) <br /> The mine highwall extends up to 50 feet above the mine portal at <br /> 70 to 80 degree slopes. <br /> Drainage areas upstream from the mine include approximately 13.97 <br /> acres of undisturbed land. Much of the steeply sloping land is ravine <br /> with active avalanches in the printer. <br /> Sediment and drainage control structures have not been constructed <br /> for this mine portal. <br /> -3- <br /> 27 <br />