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t <br />' On average, the mine will have a stripping ratio of 2.5:1. Thirty two and <br />one half million tons of waste rock will be removed over the life of the mine, <br />Five areas will be utilized for waste rock disposal. The largest of these <br />disposal areas will be located south of the Rito Seco and will be utilized for <br />disposal of waste rock and dewatered tailings. Three smaller waste rock disposal <br />areas are proposed north of the stream. The fifth waste rock disp~~sal area is <br />the East Pit. Once mining is complete in the East Pit, waste rock from the West <br />' Pit will be used to partially backfill the East Pit. For a mare detailed <br />discussion on waste rock disposal see Section D.3. <br />' Once mined, the ore will be separated into high-grade ore for processing <br />' in the mill and lower-grade ore for heap leach processing. It ~s currently <br />anticipated that approximately 6.5 million tons of ore will be leashed and 6.5 <br />million tons of ore will be milled. <br />1 <br />The heap leach ore will be crushed to minus 3/16 inch and placed on the <br />leach pad. The leach pad will be a double-lined facility with a secondary <br />recovery system between the liners. The leach pad system is designed to be non- <br />, discharging under normal operating conditions and the 100-y r, 24-hr design storm <br />conditions. The capacity of the leach pad and associated pond systea is designed <br />to contain the precipitation from a 100-yr, 24-hr storm in addition to total pad <br />draindown without discharging. The pad will be sloped to the southwest to free- <br />drain into a barren and pregnant pond system located in the southwest corner of <br />' the leach pad. The heap leach facility is described in detail in Section D.7. <br />' The mill facility will consist of an additional crushing circuit to crush <br />the ore to minus 250 microns, atypical flotation circuit, a cyanidation circuit, <br />and a gold recovery circuit. The mill tailings will be dewatered and disposed <br />in the southern waste rock disposal area. More complete discussions of the <br />' milling operations and tailings disposal method are contained in iections D.5 <br />and D.3, respectively. <br />' The main drainage through the project area is the Rito Seco. The only <br />disturbance in or adjacent to the drainage will be for minor road crossings <br />I associated with the county road relocation and hauling during the life of the <br />project. Ongoing aquatic life and surface water quantity and quality monitoring <br /> <br />ii <br />1 <br />