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6.4.4 Exhibit D — Mining Plan <br /> The following sections detail changes from the existing Exhibit D. <br /> (a) Description of Methods <br /> Both Cells 2 and 4 will utilize conventional dry mining techniques whereby <br /> dewatering trenches are first constructed around the perimeter of the active <br /> excavation. Mining highwalls will vary from 1H:1V to 3H:1VTopsoil is then <br /> removed with scrapers and stockpiled separately form overburden. Overburden <br /> materials are then striped with an excavator loading into non-road haul trucks <br /> (rock trucks) where it is hauled to the overburden stockpile area to the west. <br /> (b) Earthmoving <br /> The primary earhmoving activity will be: <br /> 1. Stripping of topsoil and stockpiling in areas shown in Exhibit C-2 <br /> 2. Excavation of overburden and hauling to the stockpile area shown in <br /> Exhibit C-2 <br /> 3. Excavation of pit run and hauling to the conveyor feed <br /> Table 6.4.4-1. Mining Earthmoving Quantities Summary <br /> CELL 2 <br /> 30-45ft deep <br /> ITEM VOLUMES AREAS <br /> Total Excavation 1,886,178.00 yd3 <br /> Overburden <br /> Excavation 1,163,592.00 yd3 <br /> Gravel 722,586.00 yd3 <br /> Excavation Area 170,917.35 yd2 <br /> Excavation Area 35.32 ac <br />