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E-2 <br /> end of life-of-mine. Thus,areas of(prior)mining disturbance will be at varying stages of revegetation <br /> growth(due to the sequential annual aspect),but all areas will be subject to a five-year monitoring and <br /> maintenance period. Upon cessation of mining activities, the terminal pit will be reclaimed; and, all <br /> structures and other appurtenant facilities will be concurrently demolished and/or removed from the <br /> site and the respective affected areas reclaimed in a manner consistent with the Reclamation Plan. <br /> No ponds or impounding features are anticipated to remain post-closure within those areas that were <br /> subject to mining. The remnant (wide-area) mine pit depressions, however, will serve as natural <br /> infiltration features, thereby eliminating the potential for adverse erosional effect(s) normally <br /> anticipated with more natural run-on and/or run-off conditions. Side-slopes associated with pit <br /> perimeters and/or encountered utility (and other) easements will be established at a minimum 3H:1 V <br /> (and in some instances,as much as 5H:IV)to ensure long-term stability(as slopes will be at or greater <br /> than natural angle of repose for the sand matrix) and to facilitate ease of accessibility throughout the <br /> area by livestock,consistent with the prescribed post-mining land use designation of rangeland. To the <br /> extent present, existing ranch access and/or oil and gas service roads will be either maintained in, or <br /> restored to, their approximate original configuration(s). In general, mine planning has strived to <br /> minimize impacts on existing features, instead employing "avoidance" as a key mine planning <br /> parameter. <br /> (a) Reclamation Measures for Other Features <br /> There will be no waste rock dumps nor any underground mine openings associated with the Keenesburg <br /> No. 2 Mine Project, as the Project will employ open-cut mining only. <br /> Pit perimeter diversions, to the extent present (as safety berms), will be removed as a component of <br /> crest reduction when establishing the minimum 3H:1 V slope gradient conditions along pit perimeter <br /> and/or utility(and other) easements. To the extent(internal)minor seepage routing or other diversion <br /> features are present, such features will be removed in conjunction with concurrent reclamation efforts. <br /> Post-mining topography will ostensibly reflect that of the pre-mining topography,except all mined-out <br /> areas will be "lowered" (typically,by as much as 30 ft.) across the pit area(s), generally reflective of <br /> the varying vertical extent of sand resource extracted. As such, the end-result will be the re- <br /> establishment of the predominant natural drainage direction across the "affected area", within the <br /> confines of the post-mining pit depressions. <br /> Keenesburg No. 2 Mine_112 Reclamation Operation—November 22, 2019 <br />