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• predicted deformation of the pins after installation is shown on Figure 7 and the shear and <br />moments developed within the pins during the deformation is in Appendix D. <br />4.4 RCC Buttress <br />The FLAC and ALGOR computer models and hand calculations were used to design the anchoring <br />system for the RCC buttress. A Figure with the results of the FLAC model is in Appendix E. <br />4.5 Summary <br />The important aspect of the different models and the results is that they can be used as part of the <br />Observational Approach to evaluate the landslides' performance. The analyses show that the <br />existing corrective measures will stabilize the toe but movement at the head is still a possibility. <br />Based upon the monitoring data, additional corrective measures at the head may be implemented. <br />Additional corrective measures that have been proposed at the head of the landslide include <br />dewatering trenches and the walUbuttress at the Portals. <br />• <br />• <br />0626024\58991-LABM 9 <br />