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Overland Belt Magnet (MR02-179 <br />When the overland belt is no longer needed, it and its associated structures will be dismantled and removed from the <br />property. The concrete piers will be demolished to three feet below grade and the concrete will be hauled to the pit for <br />burial. The metal from the framework will be recycled and the magnet offered to sister companies for use. The <br />concrete pad will be demolished and hauled to the pit for burial. The area then will be graded and reclaimed as per the <br />previously approved plan. <br />Soil Stabilization Plan <br />Proper site preparation and soil handling strategies will be utilized to control wind and water erosion. The <br />movement and manipulation of topsoil materials in a moist condition minimizes wind and water erosion. As <br />explained by Bauer et al. (1976), a protective surface seal develops as silt and clay fractions bond together after <br />reapplication of topsoil. This phenomenon is attributable to the rapid evaporation of surface moisture from <br />redistributed soil materials. <br />Disturbed areas will be subjected to final grading, but will remain in a rough condition to assist stability and resist <br />slippage of topsoil after reapplication. Leaving the graded surface in a roughened configuration also improves <br />moisture permeability between the spoil/topsoil interface (Bauer et at. 1976). Scrapers will reapply topsoil along <br />the contour whenever possible. The tracks made by scrapers create a "terracing" effect that helps to reduce <br />overland surface flow and the potential loss of topsoil. Following topsoil reapplication, but before seeding, the <br />topsoil will be graded to insure a uniform and stable thickness which will be consistent with the reclamation and <br />revegetation requirements. <br />Prior to seeding, which will be initiated as soon as practical after final grading, topsoiled sites will be chisel-plowed <br />in order to alleviate compaction and promote water infiltration. Chisel-plowing has been a highly effective means <br />of temporary stabilization prior to vegetation establishment. Dollhopf et al. (1977) reported that chisel-plowed <br />topsoil at the Savage, Beulah and Colstrip Surface Mines were only surpassed by the radical treatment of dozer <br />basins in reducing overland water flow from reclaimed mine sites. The water detention capacity of chisel-plowed <br />topsoil is reported by Dollhopf et al. (1977) as 176,4001iters per hectare, or 2,521.3 cubic feet per acre. <br />Another stabilization technique which serves to minimize erosion is contour furrowing. Disturbed land within the <br />proposed permit area will be contour furrowed following seeding. Atypical cross section of a contour furrow is <br />depicted in Figure 12, Design of Typical Contour Furrow. According to data derived from studies at the Energy <br />Mine No. 1, the water detention capacity of these furrows, when spaced thirty feet apart, is 2,599.7 cubic feet per <br />acre. <br />TR09-66 2.05 - 106.2 02/17/09 <br />