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The active mining face will progress to the south. A portable crushing plant will process <br />aggregate each year for 60 to 100 days. Each year the plant will be set up near the mining face. <br />During mining and prior to reclamation, the phase walls will be a nearly vertical to %zHa V slope. <br />The aggregate material will be temporarily stockpiled or placed directly onto a conveyor system <br />or haul truck units for transport to the customer area. <br />In all phases, the side slopes for the resultant lake will be constructed as the mining phases are <br />excavated. Although the interior phase wall will remain disturbed and vertical until the phase is <br />mined out, the exterior walls of the phase will be backfilled, graded to a 3H:1 V slope, and seeded <br />as mining progresses. Once backfilling and grading has been completed in an area, the top of the <br />slope and the side slopes will be seeded as soon as practicable (based on first available seeding <br />season). Additionally, areas on the pit floor not subject to traffic will be rough graded and seeded <br />to reduce erosion. <br />The following table illustrates the maximum mining disturbance on the site. In addition to the <br />aggregate operation, an asphalt plant, concrete plant, processing plant, and associated product <br />stockpiles will be in place in the bottom of the mining pit. <br /> <br />Minin O eration Disturbed Area <br />(Acres <br />Roads 3 <br />Dewatering trench 1 <br />Minin area 6 <br />Stri ped area ahead of mining 6 <br />Work and Plant areas 18 <br />Inert fill area 1 <br />Grading area ready for revegetation 2 <br />Maximum total disturbed area 37 <br />River Ya!!ey Resource <br />DMG ll2 Permit Ameudment <br />Pnge 6 <br />