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to discrepancies found in the Peabody topsoil depth estimates. A mitigation plan was approved by the Division and implemented by the mine in 1996. When possible, topsoil is live hauled to active reclamation azeas. However, this is not always possible and some topsoil will be stockpiled. Stockpiled topsoil will be protected from wind and water erosion by roughening and ditching azound the pile, establishing an annual cover crop, or establishing a perennial grass cover, depending on the length of time a stockpile will be in place. Excavation is performed by dozers, trucks and shovel. The anticipated mining schedule for each azea where mining will occur is graphically shown on Map 2.05.3-1 in the permit document. Overburden is removed by a shovel and trucks after an area has been drilled and shot. An ANFO slurry is the primary agent used in the blast. All shots are monitored with seismographs located at structures neazest to the blast. Blasting schedules aze published in the local newspaper. Most blasting occurs mid-day eazly in the week. Daily notifications are made to certain individuals that request this service prior to each blast. The primary coal seam to be recovered is the Lower Dakota seam; however, the Upper Dakota seam will be recovered if it is thick enough and of sufficient quality. Maximum overburden depth will approach 120 feet. Excavations currently have a generally east-west orientation and will progress northwazd for about one more year. Then the developing north-south slot-cut pit will progress westwazd for the next 10-15 years. Mining began along the eastern subcrop of the New Horizon Mine 2 azea and uses a panel mining method to develop the pits (see Map 2.05.3-1). The panels will vary in length and width according to conditions, but will average approximately 2000 feet long and 120 feet wide. The mine will occasionally have up to two pits actively working in order to effectively mine the two seams. Exhibit 2.05.2-4 shows a typical cross section of the Pit Turn Slot Cut and volumetric aze listed. The overburden is excavated using a shovel and trucks and then placed or pushed into an adjacent or nearby mined-out pit panels, with the exception of the initial cut, which was placed adjacent [o the pit onto land designated as a temporary overburden stockpile (see Map 2.05.3-1). During overburden removal operations, some selective handling of material will be performed based on chemical and physical core data contained in Section 2.04.6, Geology Description, and discussions presented in Section 2.05.4(2)(d), Topsoil (Redistribution) of the permit application. Following recovery of the lower Dakota coal seam, the pit will be backfilled to approximate original contour. Overburden testing is being done to ensure that acid or tonic forming overburden is not placed within four feet of the surface and areas retreated as necessary. Topsoil will then be replaced in approximate thickness of 1.0 feet on dryland pastures and 1.5 feet on irrigated pastures, dependent upon the actual amount of topsoil recovered. The areas will then be seeded and irrigated for pasture establishment. At the New Horizon Mine 2 area, a total soil replacement depth of approximately 3.4 feet is projected for irrigated haylands and irrigated pasturelands designated as "Block A", on Map 2.05.4- 4. A total replacement depth of approximately 1.9 feet is projected for "Block B" irrigated pasturelands, 1.1 feet for "Block C", which includes both irrigated pasturelands and dryland pasture; 12