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<br />The specific method for disposing of spent catalyst and arsenic <br />removal waste material will be based on RCRA requirements. Colo- <br />ny's present preferred alternative is to transport the material <br />to the disposal area and dispose of it in association with the <br />pile. Table D-2 shows the latest estimate of solid wastes to be <br />generated by the plant and mine. The years shown do not necessar- <br />ily agree with those in Exhibit E.. Year 1 here is roughly equi- <br />valent to year 5 in E. <br />Processed shale disposal will be carried out continuously at <br />various locations in Davis Gulch. Davis Gulch is a side drainage <br />of Parachute Creek, approximately 17 miles from Grand Valley. <br />The gulch is quite steep as it descends to its confluence with <br />Parachute Creek. After that Parachute Creek meanders with only <br />about an 800-foot elevation drop to Grand Valley. <br />• Three structures will be installed to provide support for the <br />disposal operations, a processed shale truck load-out station <br />where materials move from conveyor to trucks, a mobile equipment <br />maintenance building, and a changehouse/ office facility to house <br />the engineering and operations personnel involved in the processed <br />shale disposal work. The structures will be constructed near the <br />8,000-foot elevation on the western side of Davis Gulch. Access <br />roads, utilities and sanitation equipment will be constructed <br />to operate the processed shale disposal facility. <br />Processed shale will be moistened to about 11-15 percent by weight <br />at 200°F at the retorting facility with waste water. The solid <br />material will be transported by a covered conveyor to the Davis <br />Gulch disposal site. It will be transferred to trucks for trans- <br />portation to the active disposal area where the processed shale <br />embankment will be constructed as a compacted landfill. The site <br />will be located in the western draws of Davis Gulch and the exact <br />locations can be seen on Figures D-11, D-12, and D-13. <br />D-29 <br />