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December 31, 2003. Therefore, the total disturbance area requring topsoil as of December 31, 2003 was <br />280.9 acres at the mine site. <br />Soil Replacement Thickness <br />The soil replacement thickness for the first five-yeaz permit term was projected to be 1.0 feet for the mine <br />azea. The soil balance as of December 31, 2003 was calculated as follows: <br />Mine Area <br />Total disturbance area ° 584.2 acres <br />Permanent Facilities & Topsoil replaced = 303.3 acres <br />Disttu•bance area requiring soil = 280.9 acres <br />Soil in stockpiles (Table03.1) = 706 acre-feet <br />Mean replacement depth available = 2.5 feet <br />By dividing the soil available by the area requiring soil replaced, we arrive at the 2003 soil balance thickness <br />of 2.5 feet for the mine area. More than enough topsoil has been salvaged to reclaim the existing disturbance <br />with the permitted replacement thickness of 1.0 Feet. Planned reclamation activities for 2004 field season: <br />• See exhibit map and notes. <br />Reveae[ation <br />Revegetation activities in 2003 included revegetation by drill seeding 162 acres using seed mix #1 (see Seed <br />Tag &Table 03.2). Approximately 162 acres were permanently seeded during September, 2003. Of this 162 <br />acres 59 acres had been previously seeded but SCC re-seeded the area since the vegetation did not gow <br />adequately due to the extended drought conditions. One shmb plot was established in the Northern block. <br />(ET's head) See Table 03.3 for complete planting list. The area was roughened with a dozer making three <br />foot high push-ups to help retain moisture and create micro-sites for shmb establishment. <br />Wildlife Monitorin¢ <br />Big game aerial studies were completed by Powder River Eagle Studies of Gillette, Wyoming, during <br />February 2003. See the Wildlife Monitoring Report, Yoast Mine Site 2003 Big Game Aerial Survey, <br />wildlife tab. <br />L J <br />4 <br />