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EXHIBIT C <br /> MINING PLAN <br /> COUNTY: Lincoln <br /> OPERATOR: Castle Rock Construction Company of Colorado, LLC <br /> 1. Mining will commence in late June 2019 or as soon thereafter as this permit is <br /> approved and will continue until the completion of I70 Arriba to Flagler re- <br /> construction project near Arriba. The completion of this project will be in the fall <br /> of 2020. Reclamation will be complete just after the project is finished. <br /> 2. All of the topsoil along with the grass root zone on the existing rangeland will be <br /> salvaged for use in the reclamation process. Topsoil on the disturbed portions of <br /> the pit will be striped to a depth of 8-10 inches and stockpiled as shown on <br /> Exhibit E - Mining Plan Map, East of the affected area. The topsoil will be placed <br /> back on the reclaimed area to the same 8-10 inches, when possible, during <br /> excavation as the remaining aggregate is excavated, thereby minimizing the size <br /> of the topsoil stockpile. <br /> 3. While in the process of mining we will be making a vertical cut of 4' with an <br /> excavator across the pit and doing that again working our way down to the 12' <br /> maximum depth. Once we reach the limits of the pit, we will roughly shape them <br /> at a 4:1 slope until we are complete with the borrow activity and we will reclaim <br /> the whole pit not exceeding a 4:1 slope. <br /> 4. All haul roads, storage areas, facilities, equipment, machines, tools or other <br /> materials or property will remain within the boundaries of the pit. <br /> 5. (Redacted statement) <br /> 6. Overburden is not anticipated in this mining operation. <br /> 7. If stock piles are left for extended time over 180 days it will temp seeded. <br /> Temporary seeding will utilize the seed mix stated in the reclamation plan. Any <br /> runoff from the stockpile will be channeled toward the excavation area. No <br /> drainage ways will be blocked by or contact the stockpile of topsoil. Topsoil <br /> placement will be complete by the late fall of 2020. <br /> 8. Thickness of borrow material will be a maximum of 10 feet. <br /> 9. Borrow material will be excavated within the pit limits and hauled directly to the <br /> project site off of the property. No processing of the material will occur on the <br /> site. <br />