Laserfiche WebLink
E-10 <br /> compaction effects, and to ensure that residual plant root systems and organic materials are retained <br /> within the uppermost 12-inches. A nominal 8- to 12-inch cover of growth medium will be applied <br /> across the area in its entirety; and,the area will then be considered ready for seeding. <br /> Waste Stockpile Area: CSC will utilize a dozer and/or excavator for crest and further overall slope <br /> reduction within the waste stockpile area. In order to ensure full-depth burial of the concrete debris <br /> emplaced adjacent to the stockpile, slope reduction will incorporate the dozing of sufficient material <br /> over the top of the debris(i.e.,to ensure a nominal 5-to 10-ft. cover depth; and,to ameliorate potential <br /> settling effects) such that the resultant slope will more closely approximate 5H:1 V in this locale. This <br /> may be followed by a discing of the surface (if determined necessary), to minimize or mitigate any <br /> compaction affects and to ensure that residual plant root systems and organic materials are retained <br /> within the uppermost 12-inches. A nominal 8-to 12-inch growth medium cover will be applied across <br /> the area in its entirety;and,the area will then be considered ready for seeding. <br /> Mine Pits: CSC will utilize a dozer and/or excavator for crest and further overall slope reduction along <br /> pit perimeter sidewalls, etc. (typically during the concurrent reclamation phase). The pit depression <br /> depth(i.e.,post-mining profile) is anticipated to range from approximately 20 ft. to as much as 30 ft., <br /> with the localized post-mining depth being dependent on a number of variables,to include undulations <br /> in natural topography, mineable depth as determined by economically viable resource presence, etc., <br /> all of which are anticipated to differ across the full extent of the Permit Area. Immediately following <br /> pit sidewall slope reduction(to a 314:1 V gradient or less), a nominal 8- to 12-inch course of"growth <br /> medium" will be placed on the side-slopes and base of the pit depression(s); and, the areas will be <br /> considered ready for seeding. <br /> Since the reclaimed pit floor areas will consist of marginal quality eolian sands and/or silts, in <br /> conjunction with the nominal 8-to 12-inch growth medium overlay,the pit depression(s)will not result <br /> in "impounding" features, but rather, they will function as "infiltration" features, thereby facilitating <br /> localized infiltration of precipitation, etc. Aesthetically, the pit depressions (due to their large areal <br /> extent)are anticipated to blend with the surrounding natural topography. <br /> Seeding: Revegetation is largely focused on reestablishment of the rangeland plant species identified <br /> in Exhibit J: Vegetation Information. No trees or shrubs are planned as a component of the <br /> revegetation process; rather, all revegetation activities will be focused on reestablishment of the <br /> rangeland grass species. <br /> Keenesburg No. 2 Mine_112 Reclamation Operation—November 22, 2019 <br />