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Disturbance Area <br />The maximum extent of all areas anticipated to be disturbed by mining, facility, and access <br />construction, and all reclamation activities at Yoast have been identified and are entirely encompassed <br />within the disturbance boundary as depicted on Exhibit 12-1, Operations Plan. The extent of this <br />boundary was conservatively defined, and may include areas, particularly in the vicinity of roads and <br />impoundments, that will not be affected by any disturbance. An affected lands boundary map was <br />not generated. The affected lands could be considered the area between the disturbance boundary <br />and the permit boundary. The area within the mining disturbance boundary includes the area mined, <br />the area upon which spoil is deposited and graded, and where final highwalls have been reduced. <br />A total of 2,318.3 acres are contained within the Yoast permit boundary. Exhibit 12-1, Operations <br />Plan, depicts areas that could potentially be disturbed during each permit term 11995-1999 and 2000- <br />20041. The boundaries shown on this map were drawn to allow some degree of flexibility in <br />operations. That is, if a haulage road had io be moved due to field adjustments, or a highwall <br />reduction area required additional slope area, these operations could be conducted without revisions to <br />the permit. In actuality, haul road disturbance is confined to a corridor approximately 100 feet to 200 <br />feet wide. The potential mine disturbance acreage of 924.6 acres reflects the shaded area as shown <br />on Exhibit 12-1, Operations Plan and the Revegetaticn Map, Exhibit 22-1, Post Mining Vegetation. <br />This area is conservatively overestimated for the reasons stated above..This acreage does not include <br />the 65.0 acres associated with the dragline deadhead road. Therefore, 989.6 acres may be~disturbed. <br />• <br />11 Revised 5100 <br />