2023-09-06_PERMIT FILE - M2023032 (21)

Home Browse Search

(b) A comparison of the proposed post-mining land use to other land uses in the vicinity and to adopted state and local land use plans and programs. The water storage reservoirs will be compatible with the other land uses in the vicinity, which includes farmland, industrial land, and rural residential. Municipal boundaries have approached the vicinity of the site and represent a growing need for both construction materials and water storage facilities. The Arkansas Basin Implementation Plan, developed as part of the Colorado Water Plan, recognizes the need to develop water storage opportunities in the Arkansas River Basin. (c) A description of how the Reclamation Plan will be implemented to meet each applicable requirement of Section 3.1. The Operator will carry reclamation to completion with reasonable diligence. Each phase of reclamation will be generally completed within one to two years from completion of mining, but not more than five years from the date the Operator informs the Board or Office that final reclamation of a particular phase has commenced. Section 3.1.5 Reclamation Measures Material Handling: Grading will be performed to help control erosion and siltation of the affected lands through phased mining, implementing good operation techniques to handle material as little as possible, and seeding/vegetation of stockpiles remaining in place for more than 180 days. The seed mix used for stockpiles will consist of: Bluestem (Champ, Chet) 1.00 Ibs plslacre Sand Lovegrass (Bend, Native, Ne27)2.50 Ibs plslacre Indian Ricegrass (Nezpar, Rimrock)3.00 Ibs pis/acre Prairie Sandreed (Goshen)0.75 Ibs plslacre Green Needlegrass (Lodorm) 1.50 Ibs pis/acre Little bluestem (Blaze, Cimarron, Camper)0.75 Ibs pis/acre Yellow Indiangrass (Cheyenne, Holt, Scout)0.50 Ibs plslacre Switchgrass (Blackwell, Nebraska 28) 1.50 Ibs pis/acre Sand Dropseed 0.50 Ibs plslacre Total: 12.00 pounds plslacre Although the use of erosion protection devices is not anticipated, if deemed necessary by the operator at the time of excavation, silt fence, haybale dams or other erosion control devices will be installed. Backfilling and grading will be completed as soon as feasible after the mining process is complete for each phase. Maximum final slopes and slope combinations will be compatible with the selected post- mining land use. Mining will occur at a slope that is stable. Reclaimed slopes in the water storage reservoirs will not be steeper than a 3:1 ratio (horizontal:vertical). Representative samples of the fill material will be analyzed for Standard Proctor moisture/density relationships prior to backfilling the slope. The material will be worked to within 2%of the optimal moisture content and placed back into the slope at lifts not exceeding 1-foot. The Martin Marietta Materials—Thunderbird Sand and Gravel—MLRB 112 Permit Application Exhibit E-2