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Table GS-2. Factors of Safety for Slope Stability <br /> Slope Condition Lowest Factor of Lowest Factor of Safety Nearest Structure and Distance to <br /> Safety(static) (seismic) Failure Slope <br /> Active Mining 1.87 N/A Wastewater lagoons, >200-ft <br /> Final Reclamation 2.26 1.70 i Wastewater lagoons, >200-ft <br /> 3. Conclusion <br /> The Active Mining condition slope has a minimum factor of safety (FoS = 1.87) of greater than <br /> 1.5 for static conditions. The Final Reclamation slope has a minimum factor of safety (FoS = <br /> 2.26) of greater than 1.5 for static conditions. This Factor of Safety is greater in both conditions <br /> than the CDRMS minimum for critical structure of 1.5. The seismic analysis for the permanent <br /> Reclaimed Condition is similarly above the CDRMS minimums for critical structures: 1.70 > 1.3. <br /> The slope stability analysis in this permit has been prepared according to appropriate <br /> engineering standards and practices. <br /> o�POo LI cF4, 14Vs' <br /> • <br /> Ben Langenfeld, P.E. <br /> P.E.#0047151 <br /> • North River Pit GS-4 111 <br /> April 2025 Lewicki&Associates <br />