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PERMFILE108744
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PERMFILE108744
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Last modified
8/24/2016 10:01:13 PM
Creation date
11/24/2007 5:16:36 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056A
IBM Index Class Name
Permit File
Doc Date
9/10/2004
Section_Exhibit Name
2.05 Operation and Reclamation Plans Part 2
Media Type
D
Archive
Yes
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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 the <br />contour whenever possible. The tracks made by scrapers create a "terracing" effect that helps to reduce overland <br />surface flow and the potential loss of topsoil. Following topsoil reapplication, but before seeding, the topsoil will be <br />graded to insure a uniform and stable thickness which will be consistent with the reclamation and revegetation <br />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 of <br />temporary stabilization prior to vegetation establishment. Dollhopf et al. (1977) reported that chisel-plowed topsoil <br />at the Savage, Beulah and Colstrip Surface Mines were only surpassed by the radical treatment of dozer basins in <br />reducing overland water flow from reclaimed mine sites. The water detention capacity of chisel-plowed topsoil is <br />reported by Dollhopf et al. (1977) as 176,400 liters 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 azea will be contour furrowed following seeding. Atypical cross section of a contour furrow is <br />depicted in Figure l2, 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 />TR 04-44 2.05 - 106. l 09/ 10/04 <br />
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