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Summary and Conclusions <br />Based on the Divisions Adequacy Comments, and subsequent discussions with Division staff <br />pertaining to slope stability issues, MCC understands that of the high priority tasks listed above, <br />only the substation is impacted by potential stability issues. Therefore, with the exception of the <br />substation site, MCC does not propose additional stability investigations, data collection, or special <br />construction techniques for these high priority azeas. MCC does however commit to covering these <br />construction sites in the general and geotechnical specific monitoring of field conditions proposed <br />earlier, and will modify their approach if conditions warrant. Furthermore, MCC commits to <br />construction of any size facilities necessary to provide a stable site over the long term. <br />For the substation, additional site-specific material property information has been collected, and <br />limited stability analyses for the cut slope have been completed. A cohesion value of 700 psf and a <br />friction angle of 45 degrees were obtained at the tce of the cut slope, indicating the current design <br />of the cut slope is probably conservative. However, a decision on the design of the cut slope <br />behind the substation will be postponed until additional analyses further up the cut slope are <br />completed. Due to the critical nature of this facility, MCC will nevertheless implement the top <br />down cut slope construction techniques described previously and conduct both general and site <br />specific observation monitoring at this site. <br />For the widening and realignment the existing Sylvester Gulch road, and for the completion of the <br />Water Tank light use access road from Landing #2 to the water tank, MCC will postpone <br />construction until such time as additional site specific geotechnical information is collected and <br />• analyzed. Current designs will be verified or modified prior to breaking ground. As with the <br />substation, MCC will implement the top down cut slope constmction techniques described <br />previously and conduct both general and site specific monitoring of each affected cut slope. <br />