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lining the channel reaches above the outcrop with riprap will provide stable channels. <br />In the area along the road just below the mine site, steep slopes are present. The <br />Operator will utilize tercaces 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 shall be rounded or reduced and shaped <br />to conform the site to adjacent terrain. Minimal material will be excavated from the <br />slope immediately below the berm in this narrowest portion of the road. Material to fill <br />these steeper areas will be excavated from the switchback just below the steep area. <br />This material will be moved into place with a dozer or other suitable equipment. To <br />ensure that the configuration proposed would create a material balance, the volume of <br />cut and fill was calculated. The tabulated calculation is presented in Table 3.9-2 and <br />shows that there will be a total of nearly 34,000 bank cubic yards of material with a <br />slight deficit of 235 cubic yards of material. The deficit is not significant. <br />. Mine Road Stability Analvsis <br />To ensure that the reclamation of the mine site and road will be stable, analysis <br />of stability was performed on three areas on the road and two on the mine site. These <br />calculations indicate that the reclaimed slopes will be stable. The locations of these <br />cross sections are shown on Figures 3.1-2 through 3.1-7. These sections generally <br />duplicate the location of stability analysis performed in 1982 in response to questions <br />by the Division about future haul road construction. In conjunction with the previous <br />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 teraaces." The soil <br />has low cohesion, 200 PSF; a high angle of internal friction, 28°, and a density of 125 <br />TR-22 3-8 05/23/07 <br />