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<br />' Following backfill placement in the East Pit, topsoil <br /> will be distributed to a depth of 18 inches, and the areas will <br />' be revegetated using the approved seed mixture. <br /> E.3.7.2 West Pit <br /> <br /> As shown on Figure C-2, the West Pit will be mined in <br />' an irregular configuration, As part of the mining, the pit will <br /> be constructed with several wide benches separated by a series <br />' of highwalls and narrower benches. In most case>, a maximum <br /> height of 45 ft of bench highwall configuration will be <br /> maintained between wide benches. Wildlife access to the <br />' postmining West Pit area will be maximized through the use of <br /> land shaping techniques. Such land shaping will include manmade <br /> talus slopes placed at an angle of repose and walked with a <br /> dozer to ensure stability. These slopes will :+llow access <br />' between benches for wildlife and will be placed at irregular <br /> intervals throughout the pit. In addition, several of the <br /> access ramps from bench to bench will be left in place to <br />' create a different type of access. <br />' Topsoil will be replaced on the wide benches to a depth <br />of 18 inches. and these areas will be seedf~d with the <br />' reclamation Need mixture in accordance with the procedures <br />• outlined in Section E.2. Figure F-2 shows the approximate post <br />mining contours for the West Pit area. <br />' Upon completion of mining, the Soutti Pit wall will be <br />approximately 100 ft from the Rito Seco. All of the pit walls, <br />' with the exception of the south wall of the West Pit, have bAen <br />determined to be stable subsequent to mining in their as-mined <br />configuration. To ensure long-term stability of the south wall <br />' of the West Pit, a rock buttress will be constructed composed <br />of interburden waste rock material. The preliminary buttress <br />' design is shown on Figure E.3.1-2. <br />' E-10 (Revised 4!20/89) <br />