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King Mine, the Gelwick Mine, the old Blue Ribbon Mine and the Farmers' Mine. The old <br />townsite of Bowie is located within the Bowie No. 2 permit area. There are no known historical <br />sites that are eligible to the National Register in the areas to be disturbed under Permit Revision <br />No. 6. Three historic sites, not associated with important persons or events in history and not <br />eligible to the National Register, were determined by the CHS to not have much integrity due to <br />deterioration and alteration. As requested by the Colorado Historical Society, BRL has <br />committed to stop construction and evaluate the situation appropriately, in consultation with the <br />Colorado Historical Society, if previously unknown cultural resources should be discovered. <br />Geology - <br />Detailed information regarding the geology in and adjacent to the Bowie No. 2 Mine permit area <br />is provided in Sections 2.04.5 and 2.04.6 of the permit application document. A brief summary is <br />provided below, and this summary is derived from the information presented within Sections <br />2.04.5 and 2.04.6 of the permit application. <br />The Bowie No. 2 Mine permit area is located in the North Fork Valley of the Gunnison River, <br />neaz the western margin of the Colorado portion of the Central Rocky Mountains. The elevation <br />of the permit azea ranges from about 6,000 feet above sea level to over 8,000 feet above sea <br />level. The general area is situated along the southern flank of the Piceance Creek structural and <br />sedimentary basin. The azea is bounded by Iarimide structural and physiographic features on the <br />following sides: West Elk and Elk Mountains on the east; the Gunnison Uplift on the south; the <br />Uncompahgre Uplift on the west-southwest; and the Grand Mesa-Piceance Basin on the north. <br />The geologic structure of the permit azea exhibits an attitude of N66'W, with a 3to 5-degree dip <br />to the northeast. There is one identified fault located in the southwest comer of the permit area. <br />The fault trends approximately N55'W and it dips 70 to 80 degrees to the northeast. The throw of <br />the fault ranges from 7 to 30 feet, with the downside located on the south side of the fault. <br />The coal in the area is situated within Mesaverde formation which contains interbedded <br />sandstones, mdstones, shales, siltones and coal beds. The Mesaverde formation lies upon the <br />Rollins Sandstone Member of the Iles formation and below the Wasatch formation. The coal <br />bearing member of the Mesaverde formation locally contains up to nine (9) coal seams. These <br />seams are located within a stratigraphic interval of approximately 500 to 600 feet above the <br />Rollins Sandstone. These coal seams are, in ascending order, the A-Seam, the B- I Seam, the B-2 <br />Seam, the C-Seam, the D-1 Seam, the D-2 Seam, the E- I Seam, the E-2 Seam and the F-Seam. <br />The B-2 and D-2 Seams are mineable within the permit azea, and mining will occur within the <br />D-2 Seam during the second five-year permit term, as it had during the first five-year permit <br />term. The D-2 Seam overlies the Rollins Sandstone by 350 to 450 feet, and it ranges in thickness <br />from about 8 to 16 feet. <br />t2 <br />