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Cripple Creek&Victor Gold Mine <br /> Valley Leach Facility Expansions ■ <br /> Detailed Design for Permitting <br /> NewFields Project No.475.0106.064• <br /> March 2024 <br /> Table 5.2—Calculated Minimum Factors of Safety <br /> Section Area Condition Factor of Safety(Note 1) <br /> Static 1.4 <br /> A VLF2 Phase 4 <br /> Pseudostatic 1.2 <br /> Static 1.8 <br /> B VLF2 Phase 4&6 <br /> Pseudostatic 1.5 <br /> Static 1.7 <br /> C VLF2 Phase 4 <br /> Pseudostatic 1.4 <br /> Static 1.8 <br /> D VLF2 Phase 6 <br /> Pseudostatic 1.4 <br /> Static 2.2 <br /> E VLF2 Phase 6 <br /> Pseudostatic 1.8 <br /> Notes:1.The GLE/Morgenstern-Price and Spencer methods were used to <br /> determine the minimum factors of safety. The presented factors of <br /> safety are the minimum factors of safety calculated by either method. <br /> • Results indicate that the VLF Expansion slopes achieve the prescriptive requirements from DRMS <br /> and Newmont and will remain stable under static and pseudostatic loading conditions. <br /> 5.2. Settlement Evaluation <br /> The VLF Expansion increases the ore stack height on the existing VLF2 facility and partially fills <br /> the interior basin of the VLF1 facility extending the footprint up the valley slope.Additionally,the <br /> proposed Elkton pit, located under the VLF 2 Phase 4 Expansion, will be backfilled. Differential <br /> settlement is expected to occur due to variable fill thickness and foundation transitions from <br /> intact bedrock to pit backfill.The evaluation was completed to estimate long-term settlement at <br /> critical sections and assess if the estimated strain, caused by settlement along the base of the <br /> facility, could compromise the integrity of the LLDPE liner. In addition, settlement of the VLF1 <br /> slopes surrounding the proposed PSSA was evaluated to ensure potential settlement would not <br /> reduce the storage areas capacity. <br /> The settlement evaluation was completed using the two-dimensional (2D) finite element stress <br /> analysis program RS2 v.11. Considering the nature of the backfill material and lack of <br /> groundwater presence, time-rate consolidation is not expected and an elastic approach to <br /> estimate deformations was completed. <br /> Page 21 <br />