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adjacent to Interstate Highway 70, in Mcsa County, CO <br />(fig. 1). The site includes parts of sections 26. 34, 35, T 10 <br />S, R 98 W on the Cameo 7.5 -min U.S. Geological Survey <br />quadrangle map, and parts of sections 1 and 2, T 11 S; <br />R 98 W on the Palisade and Cameo quadrangle maps. <br />Approxituately 300 acres are included in the monitoring <br />areas. Three distinct areas were designated to be moni- <br />tored over the duration of this study. the northwest sec- <br />tion, the southwest section, and the third -west section. <br />The topography over the panels is generally rolling, with <br />a few vertical faces (,ordering the northwest study arca <br />(fig. 2). The maximum ground slope in the general area <br />is approximately 45 pet, with maximum topographical relief <br />occurring over the third -west section. The average surface <br />elevation of the study site is 5,300 It. Vegetation consists <br />mostly of sagebrush, with some heavily forested areas in <br />the third -west monitoring section. The location of the <br />monitoring area in the north is such that surface vcgeta- <br />tion allowed clear lines of sight for the monitoring surveys. <br />The southern section ties under a partially wooded area <br />that required some cutting and clearing to establish clear <br />lines of sighi. Cottonwood Creck, a perennial stream, is <br />located over the third -west section. Another perennial <br />stream, Rapid Creek, which is located north of the moni- <br />toring sccOnn, was also undermined. Several service roads <br />ovcrlic the mine property and provide access to both the <br />Rapid Creel: and Cottonwood Creek drainage. Two 8-in- <br />diam watcrhncs belonging to the city of Palisade and a <br />24-in-diam waterline belonging to the Ute Water Conscrv- <br />ancy District tramse the property, including the moni. <br />tored southwest section. These waterlines are used for <br />public drinking water and irrigation. Electrical transmis- <br />sion tines providing service to both the mine and water <br />plant traverse the northwest undermined area. <br />REGIONAL GEOLOGY <br />Coal is produced from the Cameo 'B' Seam, a se- <br />quencc of carbonaceous coal -bearing strata within the <br />Bookcliffs Coalfield. The Cameo V Scam is one of the <br />four definable coal scams within the Mount Garfield For- <br />mation, Mcsavcrde Group (fig. 3). A more detailed strati. <br />graphic column of the Mount Garfield Formation (in the <br />immediate proximity of the Cameo 'B' Scam) is shown in <br />figure 4. The scale on this geologic column begins at the <br />approximate site elevation for all three sections. This <br />f <br />" tltsi :ounty <br />L_._ y <br />F19we t.—Propel towdon map. <br />