2003-06-16_PERMIT FILE - C1981041 (4)

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~- /dnalysis of the Cameo "B" seam based on channel samples from both the Roadside North and South Portals is provided in Figure 6-1. Analysis for marcacite is not applicable since the project area, as is generally the case in the Western United States, exhibits alkaline drainage conditions. (iv) A complete analysis representative of each roof material, coal seam, and floor material from the Cameo "B" seam and the coal processing waste is provided in Figure 6-2. An analysis of the coal processing waste is given in Appendix 6-2. Present plans do not call for development of any additional surface facility which would require removal of strata down to the level of the coal seam. (v) The near surface geology of the surface operations and facilities which are not underlain by the coal seam to be extracted has been defined from test boring. The disturbed surface areas at the mine sites are generally underlain by alluvial deposits olrtrpe Colorado River~(oodplain. The subsurtace material • has been described as a three-layer soil profile. The upper layer consists of a low density man-made fill material consisting of gravel, silt, sand, and coal debris. This material is confined to the immediate vicinity of coal handling and mine ancillary facilities. The second layer consists of the original native soil overlying bedrock. This low density, medium brown, alluvial silt ranges from lean clay to silty sand and contains scattered gravel and cobble-sized fragments. The depth of this alluvium ranges from 9 to 60 feet beneath the isturbed areas. The third layer is a bedrock unit of buff-colored, fine-grained sandstone. Physical and chemical properties of the affected strata are represented by the lithologic logs, gradation graphs, and soils analysis which are compiled in Appendices 6-1 and 9-1, Tab Section 9. Bore hole and soil sampling locations are shown in Exhibits 13 and 23, respectively. • 6-4 (New 3/1/96)