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<br />In the area along the road just below the mine site, steep slopes are present. The <br />Operator utilized terraces on the reclaimed slope to prevent excessive erosion and to <br />provide long-term stability in cut and fill slopes. To the extent practicable, the terraces <br />and the crest of the remnant cut and fill slopes were rounded or reduced and shaped to <br />conform to adjacent terrain. Minimal material was excavated from the slope <br />immediately below the berm in this narrowest portion of the road. Material to fill these <br />steeper areas was excavated from the switchback just below the steep area. This <br />material was moved into place with the wheel loader and dozer. To ensure that the <br />configuration proposed would create a material balance, the volume of cut and fill was <br />calculated. The tabulated calculation is presented in Table 3.9-2 and shows that there <br />will be a total of nearly 34,000 bank cubic yards of material with a slight deficit of 235 <br />cubic yards of material. The deficit is not significant. <br />Mine Road Stability Analysis <br />To ensure that the reclamation of the mine site and road would be stable, <br />analysis of stability was performed on three areas on the road and two on the mine site. <br />These calculations indicate that the reclaimed slopes will be stable. The locations of <br />these cross sections are shown on Figures 3.1-2 through 3.1-7. These sections <br />generally duplicate the location of stability analysis performed in 1982 in response to <br />questions by the Division about future haul road construction. In conjunction with the <br />previous stability analysis, detailed geologic mapping of the area and triaxial tests were <br />performed to determine the engineering characteristics of the soil types existing along <br />the road. Some areas not analyzed previously where added because the existing <br />configuration does not include the large cuts anticipated for the previous submittal. <br />The mapping and analysis revealed that two soil types exist along the road. First is soil <br />of alluvial origin that is high in gravel and sand content and exists along the lower <br />portions of the road on the points that Geo-Hydro identified as "river terraces." The soil <br />has low cohesion, 200 PSF; a high angle of internal friction, 28°, and a density of 125 <br />TR-23 3-8 12/07 <br />