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NEWMONT <br /> GOLDCORP <br /> revegetated because the coarse rock prevents erosion. Drainage channels or benches developed <br /> on the OSAs will be candidates for similar plating with rock and select slopes may be suitably <br /> plated with the overburden as a backdrop for other compatible uses. <br /> The stability of the reclaimed SGOSA was addressed in permit Amendment 10 documentation. <br /> Updates to the stability of the reclaimed slopes, based on the VLF2 Phase 3 modifications are <br /> presented in the VLF2 Phase 3 Detailed Design Report, provided in Appendix 1. The final <br /> reclaimed surface of the SGOSA will be graded to conform to the stormwater runoff patterns <br /> shown on the drawings in Exhibit F. An updated discussion of diversion/conveyance channels <br /> and detention basins for the new SGOSA configuration and VLF2 Phase 3 configuration is <br /> provided in the VLF/OSA Closure Stormwater Analysis provided in Appendix 3. <br /> ECOSA <br /> ECOSA is located along the southern (north and east-facing) slopes of Grassy Valley with the <br /> vast portions of the OSA lying within the volcanic diatreme. The maximum constructed height of <br /> ECOSA will be 10,960 ft amsl, as approved in Amendment 11. Out slopes will be graded to <br /> approximately 2.5H:1 V with drainage channels established at the back of each bench graded to <br /> drain water away from the ECOSA. A minimum of six inches of growth medium will be used to <br /> cover the graded overburden with a typical depth of growth medium ranging from six to twelve <br /> inches. The soil may be sampled to determine the need for additional soil amendments. <br /> Vegetation will be established according to the procedures presented in Section 1.3.3. <br /> As discussed in greater detail in Appendix 1, Volume Il, of Amendment 11 documentation, the <br /> neutralizing capability of the overburden to be placed in the ECOSA, along with the neutralization <br /> capacity of the rock in the diatreme, is estimated to be adequate to neutralize potential water <br /> quality changes as a result of the overburden placement into ECOSA. <br /> The stability of the reclaimed ECOSA was addressed in Amendment 11 and is discussed <br /> generally in Section 1.4.1 above. The previous analysis indicates that the reclaimed area of <br /> ECOSA will be stable over the long term. <br /> The final reclaimed surface of the ECOSA will be graded to conform to the runoff patterns shown <br /> on the drawings in Exhibit F. A discussion of diversion/conveyance channels and detention basins <br /> for the final ECOSA configuration is provided in the updated VLF/OSA Closure Stormwater <br /> Analysis provided in Appendix 3. <br /> Cripple Creek&Victor Gold Mining Company Exhibit E <br /> Cresson Project Amendment 13 <br /> 10 <br />