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<br />Cripple Creek & Victor Gold Mining Company Exhibit D Cresson Project Amendment 13 16 <br />discussed in previous plans. Backfill configurations and sequencing for VLF2 Phase 3 during mine operations are presented in the Valley Leach Facility 2 Phase 3 Detailed Design Report, included in Appendix 1. Backfill configurations and sequencing for other mine areas are provided in previous amendments and plans. Note that the actual amount of backfill and the timing of backfilling activities for a mine area and a particular year may change based on project economics and may vary from what is shown on these permit drawings. Backfill configurations for reclamation are shown on drawings presented in Exhibit F. <br />Once condemnation sampling is performed and a surface mine area is deemed complete, these mine areas will become available for backfill of overburden. Overburden backfilling will occur in the Main Cresson, East Cresson and North Cresson (including the Schist Island) mine areas. The extent of backfilling in these areas is dependent on mine-sequencing and material availability. Existing OSAs may be utilized as a resource depending on changing economic circumstances (as approved by TR-104), which would create additional capacity in existing OSAs for overburden deposition. Backfill and grading activities are discussed below. <br />Backfill and Grading Activities <br />Backfilling will be accomplished by truck placement of the overburden material in “lifts” that vary in height, depending on the logistics of truck hauling, the geographic locations relative to the mine areas, and overburden removal scheduling. Drawing F-1 shows the post-mining topography for backfilled mine areas and is provided in Exhibit F. <br />Backfill will be placed generally to the grades and elevations shown in Exhibit F. Backfill will be graded to provide positive surface water flow and will be blended with the surrounding topography. Newly created backfill of the Main Cresson will be graded to a 2.5H:1V or flatter. Differing areas of 2H:1V slopes will be oriented against the highwalls to blend the topography. A portion of the Wildhorse Extension (WHEX) mine area will be backfilled as approved in TR-96. Generally, the pit will be backfilled and sloped to allow stormwater drainage to the west towards the Globe Hill pit. As described above, the Schist Island mine area will be backfilled to the target design elevation, 10,650 ft, for VLF2 Phase 3. <br />The main portion of WHEX and western portion of the Globe Hill mine areas will be regraded to promote free drainage of stormwater runoff from these areas at closure. Backfill will result in only a partial end-dumped backfill of the Main Cresson mine area. <br />The backfilled North Cresson and East Cresson mine areas will be graded to be free draining for surface water. Drainage will be directed to one of several Enhanced Management Ponds (EMPs).