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Geotechnical Evaluation of Mine-Induced Seismicity on Monument Dam <br />Dorsey 8 Whitney, LLP <br />• 6.1. The strength of the failure zone was not reduced because it was already considered to be <br />near its lowest value of residual strength. <br />6.3.4 Results <br />We considered potential failure surfaces passing only through the failure zone of the <br />landslide. The yield acceleration computed from the pseudo-static analyses is 0.007 g, or <br />approximately 0.01 g. A computer plot of the pseudo-static analysis of the landslide is <br />shown on Figure 6.4. <br />6.4 Discussion of Earthfill Dam and Landslide Stability Analysis <br />Results <br />The results of the stability analysis, coupled with the observed field conditions and <br />instrument measurements, indicate the landslide is likely the component of the dam/landslide <br />system that presents the most critical stability issue. However, for full reservoir, steady- <br />seepage conditions the earthfill dam static stability also does not meet the recommended <br />minimum factor of safety. <br /> <br />GEI <br />23 <br />060150 0603-16 Mmiwnmt Dem Gmmclxid Evel <br />March 2006 <br />