Laserfiche WebLink
• <br /> • <br /> SSR <br /> MINING <br /> 2.1 Grading and Ripping <br /> Grading or re-contouring will be accomplished using conventional dozers, loaders, and track-hoes <br /> as soon as practicable after completion of placement of post-mining materials. The graded slopes <br /> of OSAs and disturbed areas other than mine highwalls will be final-graded to overall slopes, <br /> which are generally at a slope ratio of 2.5 horizontal feet(H) to 1 vertical foot(V) (2.5H:1V) overall <br /> or shallower, unless steeper slopes are required either to blend with the surrounding topography <br /> or to create irregular landforms with a more natural appearance. If steeper slopes are required, <br /> the size of the area will be commensurate with the intended objective of blending or creating <br /> irregular landforms. Prior to final reclamation, CC&V will submit an updated reclamation plan <br /> showing locations where slopes will be maintained through rock plating. <br /> Some steeper slopes may be plated with rock to protect against potential stormwater runoff <br /> erosion or to emulate historic underground development rock piles in the Cripple Creek Mining <br /> District. Contour benches may be retained or cut along the contours of the longer slopes to control <br /> stormwater runoff and provide access for reclamation activities. The development of 2.5H:1V <br /> • overall slopes on selected mine area backfills, the VLFs, and the OSAs was used in the financial <br /> warranty calculations presented in Exhibit L. <br /> Areas that have been compacted through traffic or placement of structures and identified for <br /> reclamation will be ripped before and/or after grading to loosen the soil and facilitate revegetation. <br /> 2.2 Growth Medium Materials <br /> The availability of growth medium has been updated to reflect current availability. Drawing C-4b <br /> shows location and size of growth medium storage areas. Soil types were mapped based on <br /> existing data available from the National Resources Conservation Service, as confirmed by field <br /> reviews (Arcadis 2015). The results of this mapping are summarized in Exhibit I and the report, <br /> titled Baseline Technical Report for Soils and Biological Resources (Arcadis 2011 and 2015), is <br /> included in Appendix 5. <br /> The reclamation and closure plan incorporates a minimum of six inches of growth medium <br /> replacement on overburden storage areas (OSAs), select haul roads into the surface mines, <br /> certain surface mine backfills, the Arequa Gulch Valley Leach Facility (VLF1) and re-contoured <br /> Valley Leach Facility 2 (VLF2), support facility sites, reclaimed portal area, and other ancillary <br /> disturbance areas to be reclaimed. To accomplish this reclamation, approximately 3.3 million <br /> • Cripple Creek&Victor Gold Mining Company Exhibit E <br /> Cresson Project Amendment 14 <br /> 2 <br />