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2005-07-19_GENERAL DOCUMENTS - C1981018
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2005-07-19_GENERAL DOCUMENTS - C1981018
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Last modified
5/19/2020 12:10:08 PM
Creation date
11/23/2007 3:59:27 PM
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Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
General Documents
Doc Date
7/19/2005
Doc Name
Proposed Decision & Findings of Compliance for PR5
Permit Index Doc Type
Findings
Media Type
D
Archive
No
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and will be compatible with the natural surroundings. <br />Combustion of the refuse material will be minimized through compaction of the refuse. If <br />afire should start, individuals authorized by the mine operator will extinguish the fire. <br />Burned waste will be removed from the disposal area after approval from the appropriate <br />regulatory authorities. <br />The following specific findings apply to the approved refuse disposal azeas, RP-1, RP- <br />2/3/4, and RP-SA. <br />A. The Division approved plans for use, construction and maintenance of a coal mine <br />waste disposal area. The approval was based on a demonstration that no groundwater <br />exists to a depth of at least 44 feet below the refuse area, and no springs or seeps are <br />known to exist in the area (4.10.1(1)). <br />B. The Division finds that an alternative subdrainage system for the coal mine waste area <br />is not required to ensure the applicable static safety factor, stability of the fill, and <br />protection of the surface and ground water. This is due to the demonstrated lack of <br />groundwater in the coal mine waste area (4.10.3(5)). <br />C. The permittee has demonstrated, based on physical and chemical analyses of refuse <br />material and cover soil, and vegetation field trials, that the revegetation requirements <br />of 4.15 can be met with less than four feet of cover on the coal processing waste bank <br />(4.10.4(5)). <br />VI. Revegetatinn-Rule 4 1 S <br />Vegetation baseline information can be found in Section II.F, Volume 2 of the application. <br />Revegetation plan information is in Section V.I, of Volume 4. Methods to be used in <br />determinations of revegetation success aze addressed in Section V.J, of Volume 4. <br />Various aspects of the revegetation plan and methods for determination of revegetation <br />success were modified in association with RN-03. <br />The operator has proposed three seedmixes to be used on upland sites, and one additional <br />seedmix to be used for reclamation of the small riparian area in the vicinity of the White <br />River raw water lagoon. The upland seedmixes include a mix for "large permanent sites", <br />including the "D" Portal azea, refuse azeas, slot storage and rail loop facilities. This <br />mixture is composed of a diverse mix of predominately native grasses, forbs, and shrubs <br />(approximately 84% native species on a seed per squaze foot basis). The remaining upland <br />seedmixes, for "small and lineaz" and "interim and drill site reclamation", contain <br />comparatively fewer species, with a higher percentage of more aggressive, introduced <br />grasses. The introduced grass component is considered appropriate for these sites, due <br />primarily to the need for seeded species to be able to compete effectively with cheatgrass <br />present in adjacent azeas and respread topsoils, and also due to the desire for rapid site <br />stabilization. BLM, the surface management agency, has indicated their concurrence with <br />37 <br />
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