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• • 3-9 <br />use (wildlife habitat) and compatible with surrounding topo- <br />raphic features (see Figure 3.1-1). <br />The maximum slope within the worked area will be approxi- <br />mately 3:1 in the upper portion of the area along the natural <br />cliff area. The outcrop highwall is in fact a natural rock <br />outcrop and was not a result of excavation. The average slope <br />in the disturbed area will approximate original contours. <br />The existing cut slope on the south side of the mine bench <br />will be cut back. Material from the upper portions of the <br />cut will be compacted along the toe of the slope to form a <br />buttress. <br />Figure 3.1-2 shows the existing cut slope as well as the slope <br />proposed for reclamation. The location of this section <br />(labeledCC) is shown in Fiqure 3.1-1. <br />Stability analyses were run for both the existing and proposed <br />configurations. Since no site specific information was <br />available for soil strength parameters, results from Munger <br />Canyon tests were used. These numbers are as follows: <br />~ = 15° <br />cohesion = 1300 PSF <br />= 130 PCF <br />The analysis for the existing cut slope shows a safety factor <br />of 1.234. This correlates well with history of this slope as <br />it has been stable with only very minor surface sloughing. <br />The analysis of the proposed configuration (reclamation) shows <br />6/10/83 <br />