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additional slope failures to occur. It <br />• majority of slope failures occurred in the <br />mudstone layers of the Lower Bowie member, <br />Rollins sandstone and at and immediately b <br />tentatively identified at elevation 6400. <br />is believed that the <br />lower clay, shale and <br />immediately above the <br />glow the "D" coal seam <br />It is believed that during the normal , <br />valley forming processes, the majority of the slope failure <br />materials had been removed by erosion and have been partially <br />replaced by newer slope failures, presently occurring at and <br />above the "D" coal seam. In addition, the soils within the <br />proposed coal mine waste bank area are a combination of very <br />eroded old and new slope failure masses, colluvial soils, rock <br />fall materials and ancient alluvial "river" gravels and cobbles <br />• deposited by the North Fork of the Gunnison River when it was at <br />higher, relative elevations. <br />SITE AVAILABLE CONSTRUCTION SOILS <br />The soils and weathered materials of'the <br />Bowie and Rollins sandstone members are not well differentiated <br />on this site. A significant number of exploration pits and <br />possible exploration borings would be required to~ accomplish <br />meaningful mapping of this site. Based upon LinEoln DeVore <br />surface reconnaissance of this site, the weathered shales, silt- <br />stone and mudstones of the Bowie Formation appear to be quite <br />close to the ground surface in the lower reaches of. the unnamed <br />• dry creek, principally on the west bank. The east bank of this <br />5 <br />