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<br />• <br />5.3 MINE FACILITIES INFLUENCING THE ALLUVIAL VALLEY <br />The mine-related facilities located in the North Fork <br />Gunnison River study area include the coal loadout facility <br />and the stockpile area, as shown on Plate 2. <br />The stockpile area is located entirely outside of the <br />alluvium. A 450' x 300' (approx.) platform was created for <br />the stockpile by excavation of pediment material, which left <br />steep slopes on three sides of the pile area. A small sedi- <br />mentation pond is located in the extreme northeast corner of <br />the excavated area. Man-made fills border the pile area on <br />the southeast, where they support rail tracks, and on the north- <br />east, where the roadway fill allows an underpass for the rail- <br />road spur. A large area between the railroad spur and the al- <br />luvial valley was excavated to provide borrow material for <br />these fills. The stockpile site has apparently been used as <br />flood irrigated orchard land in the past. <br />The loadout facility has been constructed partly on the <br />uplands northwest of the North Fork Gunnison River and partly <br />on the alluvium. The construction required excavation of several <br />fills, notably the fill for the truck unloading facility and a <br />road fill east of the coal storage area. In order to achieve the <br />same elevation for the facility, a fill has also been construc- <br />ted on a limited portion of the alluvium on the northeast end <br />of the facility. A fill for the railroad spur extends further <br />across the valley and to the other side of the river. <br />We have estimated that the total area of the coal load- <br />out facility is about 16 acres. From this, about 5 acres of <br />fills have been placed directly on the alluvium. This includes <br />- 1S - <br />c~onroao consu~nr~, iNC. <br />