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Rifle Gravel Pit #1 June 2021 <br /> compaction and sloping will be tracked in. Recontouring to a rough texture will support the <br /> establishment of broadcasted seeds 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 133, Exhibit E1. This figure shows the <br /> anticipated maximum slope gradient range for reclamation as depicted in the Typical <br /> Section. The site will need to take on fill dirt for a source of a disposal area for clean dirt and <br /> to fill part of the pit, minimizing the size of the pond and reducing evaporation potential. <br /> The creation of a pond is planned for the site. Existing ephemeral draws and washes <br /> passing through the mine area will be reestablished or allowed to continue conveyance of <br /> ephemeral flows through the site. <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 14, Exhibit E2 provides specific information regarding <br /> the reclamation plans, final reclaimed pit pond footprint, typical section of the reclaimed pit, <br /> estimate of revegetation areas, including the types of vegetation. <br /> 6.3.3.1 Temporary Seed Mix <br /> Final seeding is best done in the late fall; therefore, if construction occurs in the summer, it <br /> Jmay be desirable to apply a temporary seed mix to the area to help minimize erosion and <br /> provide some site stabilization. Temporary seed mixes are relatively inexpensive, and the <br /> large seeds germinate quickly. Figure 14, Exhibit E2 provides detailed information <br /> regarding the various types of seed mixes proposed including form and application rate. <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 14, Exhibit E2 provides detailed <br /> information regarding the various types of seed mixes proposed including form (shrub, <br /> bunch, sod, etc.) and application rate. <br /> 26 <br />