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C-15 <br /> supervisory pickup truck travel, and mined/processed material movement throughout the plant area (e.g., <br /> in-pit haul ramp and haul segment to ROM stockpile). <br /> While these areas may be graded prior to plant assembly, the areas will not be pre-stripped of growth <br /> medium. They will; however,be subject to regrading and revegetation during site reclamation activities. <br /> CSC acknowledges that these areas may require routine re-grading and/or water application (as a dust <br /> suppressant) during the operational duration of the mine and plant operations. Such activities will be <br /> employed, as warranted. <br /> Mine Pit: <br /> The main mine pit will be roughly rectangular in shape (longitudinal axis oriented west to east), with a <br /> nominal length of 575 ft., width of 235 ft. and a projected depth limit of approximately 25 ft. to 30 ft., <br /> dependent on existing topography. CSC shall retain the right to mine to greater depths, in the event <br /> incremental resource is present and recoverable within design limitations, and market conditions warrant <br /> doing so. Pit sidewalls will be maintained at a nominal 3H:1 V slope, which is anticipated to be roughly <br /> equivalent to natural angle of repose of the material after exposure from excavation activities. <br /> Fines Recovery Pit <br /> The fines recovery pit will be a smaller,rectangular-shaped area(in footprint),nominally 275 ft. in length <br /> (west to east) by 235 ft. in width(north to south). It will be excavated to a depth nominally equivalent to <br /> that of the main mine pit. At its design pit depth of 25-ft.,the feature yields an estimated holding capacity <br /> of approximately 43,000 yd3. <br /> Based on laboratory-scale analyses and anticipated yield factors, the design capacity of the feature is <br /> sufficient to accommodate the anticipated 38,000 yd3 of plant reject,which will be slurried to the pit at an <br /> approximately 40-to 50%moisture content,by weight. The remaining 13% (or 5,000 yd3) of the feature's <br /> overall volumetric capacity will be reserved for storm water collection/detention and freeboard capacity. <br /> Keenesburg Project—Limited Impact 110 Application_May 24,2019 <br />