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D-16 <br /> The results of soils investigation efforts conducted to date indicate that the root zone depth to be <br /> encountered within the Permit Area will generally extend to a depth 8-to 12-inches below existing ground <br /> surface,as the vegetative community at the site is limited to that of various grasses,prickly pear cactus,and <br /> sand sagebrush, all of which are typical of the types of vegetation found regionally on similar, heavily- <br /> grazed,rangeland. <br /> Based on the foregoing, pre-stripping of the plant area will encompass the removal of the uppermost <br /> (nominal) 12-inches of "growth medium" for salvage, interim storage, and eventual re-use in site <br /> reclamation activities. This will be accomplished by dozer push and/or front-end loader/excavator loading <br /> and truck haul to stockpile or tractor and scrapers. CSC notes that the "growth medium"material to be <br /> stored in the stockpiles does not constitute"topsoil"per se,but rather,it is the topmost 12-inches of material <br /> in which a nominal 8-inch(+/-) "root zone"has been determined present,based on baseline soil sampling <br /> carried out across the Permit Area. <br /> In total, the plant area, which is comprised of the wet and dry plants and ancillary facilities, loadout and <br /> service road(s), and the ROM stockpile, will encompass on the order of 54 acres. Pre-strip of this area(to <br /> be accomplished prior to site grading and leveling) will require the initial stockpiling of approximately <br /> 95,000 cubic yards of growth medium. This material will initially be stockpiled at a designated interim <br /> location(TS-0)to the south-southeast of the plant area,to be shortly thereafter(Year 2)relocated to a long- <br /> term storage location (TS-1) within the westernmost extent of Year 1 mine block as mine development <br /> progresses. <br /> The sand resource is an unconsolidated,eolian sand deposit that is anticipated to be relatively consistent in <br /> terms of size distribution and quality characteristics across the entirety of the planned pit area. Due to the <br /> unconsolidated and free-flowing nature of the material, blasting is neither required, nor proposed. All <br /> material extraction will be accomplished via direct excavation methods utilizing hydraulic excavator(s) <br /> and/or front-end loader(s). <br /> MINING SEQUENCE AND ANNUAL PRODUCTION <br /> The CSC mine plan has been developed on the basis of a number of operating design parameters,many of <br /> which have, in turn, been developed on the basis of identified site-specific limitations or constraints, to <br /> include considerations relative to the presence of an extensive array of utility and other "easements" or <br /> "rights-of-way"across the entirety of the Permit Area;and,prudent mine engineering standards,to include: <br /> Keenesburg No. 2 Mine_112 Reclamation Operation—November 22, 2019 <br />