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Area Time for Mining <br /> Mining Phase Acres Years <br /> 10 5.87 1 <br /> 11 4.92 l <br /> 12 5.35 1 <br /> 13 1 3.66 l <br /> TOTAL 1 83.97 13.5 <br /> It is anticipated that the majority of the overburden from all phases will be placed back in the <br /> mined out pit for side sloping and shaping of the shoreline. Throughout the life of the operation, <br /> inert fill from on-site and off-site sources will be used for reclamation. As illustrated on the Pre- <br /> Mining/Mining Plan Map (Exhibit Q, mining will generally be conducted from the northwest to <br /> the southeast. <br /> Mining Methods <br /> The deposit will be dry mined using dewatering trenches and pumps. Dewatering trenches along <br /> the perimeter of the mining area will be used to dewater the deposit prior to mining below the <br /> water table. Pumps will be used to remove the water that drains from the deposit and surrounding <br /> alluvium into the trench. If necessary, water from the trenches will be circulated through a <br /> settling basin prior to it being discharged to irrigation ditches or the Yampa River. <br /> When the alluvium is sufficiently dewatered, the aggregate material will be recovered using <br /> equipment and facilities typical for sand and gravel mining operations. The equipment and <br /> facilities may include, but are not limited to the following: <br /> Processing Equipment <br /> Portable crushing and screening plant <br /> Concrete plant (this plant will be relocated from the nearby North Pit) with accessory office, <br /> storage, and employee rooms <br /> Asphalt plant (this plant will be relocated from the nearby North Pit) with accessory office, <br /> storage, and employee rooms <br /> Portable wash plant <br /> Earth Moving Equipment <br /> Dozers, loaders, scrapers, excavators, and compactors will be used for mining and earth <br /> moving operations. Field conveyors and off-road haul trucks will be used as needed for <br /> mining operations. <br /> Miscellaneous <br /> An employee/storage trailer, office/scale house, maintenance shop, and fueling/lubricating <br /> station will be located on-site. Dewatering pumps and generators and watering trucks will be <br /> used as needed. An area for outdoor storage will be located near the concrete plant. <br /> As mining progresses, topsoil and overburden will be stripped with scrapers to expose the <br /> aggregate product below. All soil and overburden material will be used on-site for reclamation; <br /> River Valley Resource <br /> DMG 112 Perma <br /> Page 5 <br />