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E-7 <br /> of the process waste stockpile), it is estimated that the TS-1 stockpile will contain approximately <br /> 459,000 cubic yards of growth medium,occupying an approximately 16-acre footprint area. <br /> Years 2 through the end of life-of-mine will see concurrent reclamation activities with mining. Growth <br /> media will be removed in advance of mining and subsequently directly placed behind mining activities <br /> in a nominally equivalent thickness of 8-12 inch depth. Seeding of this growth media will occur each <br /> fall for Years 2 thru EOM during fall seeding season. <br /> Stabilization,Grading,and Compaction of Spoil <br /> There will be no "spoil" generated during the mining activities conducted at the Keenesburg No. 2 <br /> Mine,as there is no"overburden". Only"growth medium"overlies the target sand mineral to be mined, <br /> and all aspects pertaining to pre-stripping(salvage),stockpiling,and stabilization are addressed above. <br /> With concurrent reclamation(steady-state conditions), virtually all growth medium generated by pre- <br /> stripping (in advance of mining) will be placed atop the prior year's (mined out) pit floor, except as <br /> otherwise noted in Table E-1: Reclamation Sequence and Projected Material Balance. In areas <br /> where the sand resource base is less than the nominal 30-ft. thickness (resulting in the mining of an <br /> incrementally larger surface area to accommodate annual ROM requirements),surplus growth medium <br /> will be transported to the TS-1 long-term stockpile. <br /> In the pre-strip operation,the material will be excavated utilizing hydraulic excavator and/or front-end <br /> loaders. Due to the nature of the material and the method of excavation,the material will be in a loose, <br /> unconsolidated condition when placed atop the (mined out) pit floor, as part of the concurrent <br /> reclamation effort. Using dozers and/or other suitable equipment,the material will then be spread in <br /> a manner that achieves a relatively consistent and nominal 8-to 12-inch cover across the entire pit floor <br /> area. Other than the limited(and unavoidable) heavy equipment induced compaction,no compaction <br /> is proposed. Natural consolidation,as a component of the re-placement,is the desired end-result(prior <br /> to seed application)to facilitate revegetation efforts. <br /> The planned replacement thickness for growth medium is virtually equivalent to that removed during <br /> pre-stripping activities (that being a nominal 12-inches as the objective). However, due to localized <br /> surface irregularities, etc., CSC anticipates that the replacement thickness may vary from location to <br /> Keenesburg No. 2 Mine_112 Reclamation Operation—November 22, 2019 <br />