PERMFILE138596

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 6/2/2006
• Section_Exhibit Name: Exhibit 72 Preventative Measure, Geotechnical Eval, Seismic Eval for Monument Dam
• Media Type: D
• Archive: No

Geotechnical Evaluation of Mlne-Induced Seismicity on Monument Dam
Dorsey 8 Whitney, LLP
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List of Tables
Table 2.1 Monument Reservoir Dam, Pertinent Data
Table 2.2 Summary of Dam Left Abutment Landslide Movement
Table 4.1 Mine-Related Earthquakes from NEIC Catalog
Table 4.2 Calculated Accelerations for Selected Mine-Related Earthquakes
Table 4.3 Calculated Accelerations for Selected Natural Earthquakes
Table 5.1 Material Properties Used in the Static Analysis of the Dam
Table 5.2 Results of the Static Analysis on Earthfill Dam
Table 6.1 Material Properties Used in Back-Calculation of Failure Zone Shear Strength
Table 7.1 Results of Preventive Measures Stability Analysis
List of Figures
Figure 2.1 Site Location Map
Figure 2.2 Plan View of Dam and Instrument Locations
Figure 2.3 Plan View of Dam and Landslide Areas
Figure 3.1 Site Geologic Map
Figure 3.2 Generalized Stratigraphic Cross-Section
Figure 5.1 Earthfill Dam Section for Stability Analysis
Figure 5.2 Earthfill Dam Steady Seepage Slope Stability Analysis
Figure 5.3 Earthfill Dam Partial Seepage Slope Stability Analysis
Figure 5.4 Earthfill Dam Yield Acceleration Slope Stability Analysis
Figure 6.1 Landslide Section for Stability Analysis
Figure 6.2 Landslide Pre-Failure Slope Stability Analysis(Back-Calculation)
Figure 6.3 Landslide Post-Failure Slope Stability Analysis
Figure 6.4 Landslide Seismic Yield Acceleration Slope Stability Analysis
Figure 7.1 Plan View of Preventive Measures
Figure 7.2 Earthfill Dam Section and Preventive Measures
Figure 7.3 Landslide Buttress
List of Appendices
Appendix A Stability Analysis Output Plots For Preventive Measures
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