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• on past studies in the area. A summary of all strength values used is summarized in Table <br />2.0. <br />SEI utilized the computer program "SLOPE/W" to evaluate the stability of the existing <br />slopes, proposed roadway and borrow site. SLOPE/W, developed by GEO-SLOPE, is a <br />software package that uses limit equilibrium theory to compute the factor of safety and <br />earth and rock slopes. Slope stability was evaluated utilizing both wedge and circular <br />failure scenarios. <br />Table 3.0 is a summary of the locations and calculated factors of safety for the proposed <br />roadway and borrow site. Two stability calculations were performed at each location. The <br />first calculation was to determine the existing factor of safety based on current <br />topography. The second calculation was to determine the effect of the proposed <br />construction on the current stability. The slope stability models showed that the <br />construction of the new roadway will improve the stability of the hillsides except for <br />three locations where the stability is still above the minimum factor of safety of 1.3 <br />utilized by the CDMG. In the three sections where the stability was lowered, the <br />minimum factor of safety was still over 1.52 for the proposed roadway sections. <br />The figures depicting the failure circles and its associated factor of safety is presented in <br />Appendix F of this report. <br />• SECTION 6.0 HYDROLOGY, HYDRAULICS <br />A surface hydrology study was prepared to determine the 100 year 24 hour surface flows <br />to design all hydraulic structures needed for this project. This information is summarized <br />in Appendix G of this report. <br />SECTION 7.0 MONITORING <br />7.1 Quality Control <br />Quality control will be utilized by MCC during the construction of the roadway. This will <br />involve construction management to ensure the roadway is built according to the <br />drawings found in Appendix A of this report. Sediment control practices presented in the <br />drawings will be implemented prior to construction. Topsoil will be stripped from the site <br />and organics removed from any fill area. All roadway embankment material will be <br />compacted to 95 percent of Standard Proctor within three percent of optimum moisture. <br />7.2 Slope Stability <br />• The stability of the hillsides in areas of landslides will be closely monitored during the <br />construction. The critical area to be monitored is from Station 132+00 to 150+00. <br />