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Rifle Gravel Pit#1 April 2022 <br /> 6.3 Implementation of the Reclamation Plan <br /> The plan and general schedule for when and how reclamation will occur throughout the <br /> mining phases is provided on Figure 14, Exhibit E1 and Figure 15, Exhibit E2, including <br /> extent, location, and sequence for reclamation. These exhibits also depict the final grading, <br /> seeding, revegetation and topsoiling. <br /> 6.3.1 Topsoil Segregation, Preservation, and Replacement <br /> The excavated topsoil will be used for berm surfacing during Phase 1 to support the <br /> revegetation of the site, with the excess stockpiled and stabilized adjacent to the Operations <br /> Area. <br /> Recontouring of the Operations Area will occur after the mining and extraction activities <br /> finish. Recontouring to a rough texture will support the establishment of broadcasted seeds <br /> and moisture retention. <br /> Stored topsoil and growth medium will be replaced evenly to a depth of 4-6 inches unless <br /> site conditions preclude this depth. Topsoil will also be left very rough. Soils will not be <br /> worked when wet to avoid mixing, loss of topsoil, and potential erosion issues. <br /> 6.3.2 Final Grading <br /> Final grading of the site is depicted in Figure 14, Exhibit E1. This figure shows the <br /> anticipated grading for reclamation. Typical sections are also provided in Figure 11, Exhibit <br /> C6. The intention is for the site to use as much topsoil and fill dirt as necessary to complete <br /> reclamation, with the remainder sold as top soil and clean fill, respectively. If necessary, <br /> additional spoils will be used to fill part of the pond, minimizing the size of the pond and <br /> reducing evaporation potential. <br /> The pond that will develop within the excavation area is planned to be the final condition for <br /> that portion of the site. There are no natural surface drainages that intersect the pond area, <br /> and conveyance of ephemeral flows in the vicinity will be unaffected. The Last Chance Ditch <br /> Tailwater Channel will continue to discharge into the pond, as previously described (Section <br /> 5.2.3.3). <br /> 6.3.3 Seeding <br /> There are different types of seed mixes to support temporary and permanent stabilization <br /> and reclamation of the site. Figure 15, Exhibit E2 provides specific information regarding <br /> the seed mixes and the locations and extent where the seed mixes will be applied. <br /> 6.3.3.1 Temporary Seed Mix <br /> A temporary seed mix is not proposed at this time. Construction is proposed to begin in <br /> summer of 2022, and the permanent reclamation seeding would be applied in the fall. <br /> Temporary seed mixes may be considered if the site needs additional stabilization, but the <br /> completion of reclamation in concert with mining operations should obviate the need for this <br /> measure. <br /> 6.3.3.2 Long-Term/Permanent Seed Mix <br /> Seeding should occur in the late fall to avoid seeds from germinating in the summer or early <br /> fall, and then either desiccating or freezing. Figure 15, Exhibit E2 provides detailed <br /> 40 <br />