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C-8 rl <br /> Initial pit development will encompass the establishment of a pit perimeter berm that will serve both as a <br /> safety feature to delineate the full extent of excavation and as a diversion feature to mitigate surface water <br /> run-on potential(into the pit). It is anticipated that development of the main mine pit will commence at the <br /> west end of the pit with a nominal 10%decline ramp. <br /> The primary pit (approximately 375-ft. long x 235-ft. wide) mined tonnage will be utilized to replenish <br /> ROM 1 stockpile (feed source to wet plant). An initial 12-ft. bench(cut)will be mined by front-endloader <br /> and/or hydraulic excavator loading to articulated haul truck units. Pit sidewalls will be maintained at a <br /> nominal 3H:1V slope (consistent with the natural angle of repose of the exposed sand material). Full pit <br /> development will follow, to include removal of a second 12- to 13- ft. bench (cut) to achieve the full pit <br /> depth objective of approximately 25 ft. <br /> The main mine pit will be mined to a nominal pit floor elevation roughly equivalent to that of the adjacent <br /> fines recovery pit. <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 utilizing either a hydraulic excavator or front- <br /> end loader(s). <br /> While it is indeterminate at this time whether or not the west pit extension (the surface of which is to be <br /> initially occupied by the growth medium stockpile TS-IA) will be mined, CSC may elect to do so if <br /> additional production tonnage is desired. In the event this were to occur,the growth medium stockpile TS- <br /> 1 A would first be relocated to an area within the mined-out pit in order to allow access to the underlying sand <br /> resource. The selected location for the relocated growth medium stockpile, likely at the east end of the pit <br /> floor, would be designated TS-1B. If the west pit extension zone is not mined, growth medium stockpile <br /> TS-IA will remain in-place until site reclamation is undertaken. <br /> Alternatively (or in addition to the potential west pit extension), incremental tonnage may be recovered <br /> through a deepening of the main mine pit, if warranted. <br />