Laserfiche WebLink
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 /> Specification will be developed for this work that outlines the allowable fill materials, lift <br /> thickness, and the minimum number of passes required from the mining equipment to achieve <br /> required compaction.Stage B of VLF1 Phase 6 will generally follow existing ground contours with <br /> the exception of cut areas that are needed to facilitate safe and constructable slopes.Stage B will <br /> drain towards the proposed VLF1 Phase 6 PSSA and is the final stage in the VLF Expansions <br /> project.Any historical underground mine workings that are encountered during construction will <br /> be remediated according to the guidelines described in Section 2.3. <br /> 4.4. VLF1 Phase 6 Process Solution Storage Area <br /> The VLF1 Phase 6 PSSA is the internal pond in the VLF for solution containment. The VLF1 Phase <br /> 6 PSSA consists of the following elements: <br /> Earthen Embankment, <br /> Y Composite Lined Basin, <br /> • High Volume Solution Collection Recovery System. <br /> • The PSSA has a Storage Capacity of 132.8 million gallons, <br /> o Based upon the water balance evaluation, the minimum storage capacity of the <br /> • VLF1 Phase 6 PSSA is 27 million gallons. <br /> ➢ An Emergency Spillway, which is 50' wide, 5' deep, has been situated to drain into the <br /> VLF1 Phase 4 PSSA if activated. <br /> The following sections discuss each element of the VLF1 Phase 6 PSSA. <br /> 4.4.1. PSSA Embankment <br /> The VLF1 Phase 6 PSSA embankment will be constructed during the Stage A construction of the <br /> VLF1 Phase 6 Expansion. Once constructed, the earthen embankment will provide containment <br /> for the PSSA along the western edge of the expansion.The VLF1 Phase 6 PSSA embankment has <br /> the following dimensions: <br /> • Average embankment height of 120 feet, measured from the downstream toe to the <br /> crest; <br /> The embankment is 1,275 feet long, measured along the crest; <br /> Minimum crest width of 25 feet; <br /> • 2(H):1(V) upstream and downstream slopes. <br /> Prior to the placement of structural fill for the embankment, the footprint will be: <br /> Removal of Crusher equipment and supporting infrastructure, <br /> • Cleared and grubbed to remove unsuitable materials, <br /> I <br /> Page 12 <br />