Laserfiche WebLink
<br />C~ <br /> <br />latter test was~erformed for OXY on fragmented•l shale from the Logan <br />Wash site (Woodward-Clyde Consultants, 1975) which indicate an angle of <br />internal friction approaching 40°. <br />A plane shear analysis, (Appendix A and figure 8) shows a failure is unlikely <br />in an oil shale rock disposal pile because the force that tends to cause <br />failure is less than the resisting force even when the additional effects of <br />the cohesion and interlocking along the maximum stress path are not considered. <br />Site Rehabilitation Pl <br />The Garfield County, Colorado Zoning Resolution of April, 1975 requires a <br />Special Use Permit fora Mineral Waste Disposal area under Article 3.11.03. <br />Article 4.03.01 (5) (a) further requires that a site rehabilitation plan be <br />submitted for approval by the County Commissioners before issuance of a <br />Special Use Permit. This, then, is submitted as a site rehabilitation <br />plan fora mineral waste disposal area located in a box canyon locally <br />named Dry Gulch in the E4NW~, Sec. 25, T7S, R97W, 6th PM. <br />A permit for a relatively small mineral waste disposal area was granted in <br />1974. It is now desired to enlarge this existing disposal area to cover <br />approximately 30 acres. <br />The east side of Dry Gulch has no vegetation due to the presence of the <br />existing mineral waste except for the northernmost 1000 feet of the area <br />where sparse mountain browse occurs on natural talus. The west side of <br />Dry Gulch has a sparse mountain browse community interspersed with barren <br />scree (talus) slopes. The mountain browse community on this slope is <br />dominated by service berry (Amelanchier alnifolia) and lacks any appreci- <br />able grass or forb undercover. The scree slopes are narrow strips of <br />colluvial material wasting from the Mahogany Ledge. These narrow strips <br />resemble "landslides" and occur at all exposures on OXY property as well as <br />-5- <br />