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North Pit <br />The North Pit will be mined first. A breakdown of the estimated North Pit areas aze included in <br />table D-2. Mining in the North Pit will begin with the installation and/or maintenance of ditches <br />#3,4, and 5. They provide isolation from the surrounding watersheds. These ditches are furtller <br />described in Exhibit G. An isolation berm will be constructed along the downhill edge of the <br />North Pit as the mining progresses northwazd. This berm will be constructed from bank material <br />and most likely will be dozed in_ The isolation berm can be seen on Map C-2. Then Mining Area <br />1's topsoil will be stripped with belly scrapers and stockpiled in berms surrounding the North Pit, <br />as shown on Map C-2. The berms will be sloped at 2.SH:1 V with an approximate height of 3 feet. <br />A triangulaz widening of the topsoil berm as seen on Map C-2 will provide additional storage for <br />excess topsoil. This berm will also provide isolation from the watershed to the west and north. <br />The raw gravel material will then be loaded into a portable crusher/screen plant where various <br />sizes of product will be made and placed in sepazate stockpiles. Dozers may also be used to move <br />topsoil or gravel. The portable crushing plant usually operates for a total of 18 month intermit- <br />tently per year, although future demand may require crushing for up to 25 weeks per year. Once <br />mining is completed in Mining Area 1 the topsoil of Mining Area 2 ~~dll be stripped and used to <br />reclaim the slopes of Area 1. A table of expected mining lives for the two North Pit azeas aze in- <br />eluded in table D-3. The life of an area is based on the anticipated annual average tonnage. After <br />mining is completed in the North Pit and while the South Pit is being developed and mined, the <br />entire North Pit area will be reclaimed and isolated from construction activity. For further recla- <br />motion description please see Exhibit E. <br />North Pit Area Description Acreage <br />Mining Area 1 6.42 <br />Mining Area 2 6.41 <br />Total Permit Area 12.83 <br />Table D-2 <br />Gugninil2/03 <br />