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Chavers Mining Resource <br /> DRMS Permit No.M-2015-030 <br /> Amendment No.2(AM-02) <br /> January 2024 <br /> Page 8 <br /> proceed with the revegetation process. The approximate final contours of the Site are <br /> shown on Exhibit F -Reclamation Plan Map. <br /> ■ Seeding and Growth Monitoring: The topsoil layer will be seeded with a native grass <br /> seed mix to return the property to rangeland use. Growth of the grass will be monitored <br /> quarterly until established to ensure a successful transition back to rangeland use. <br /> 6.4.5 (2)(b) Land Uses in the Vicinity <br /> Reclamation to rangeland land is a positive and useful post-closure land use that is compatible <br /> with surrounding uses which include multiple sand and gravel mines, oil and gas industry sites, <br /> and other rangeland/agricultural lands. <br /> 6.4.5 (2)(c) Reclamation Performance Standards <br /> The following sections describe how this reclamation plan meets applicable requirements of <br /> Construction Materials Rule No. 3, Section 3.1 Reclamation Performance Standards. <br /> RULE 3: Section 3.1 -Reclamation Performance Standards <br /> 3.1.1 Establish Post Mining Land Use: The post-mining land use shall return the property to <br /> rangeland use. The Site is currently zoned Agricultural by the City of Fort Lupton. <br /> 3.1.2 Reclaiming Substituted Land:Not Applicable <br /> 3.1.3 Time Limited and Phased Reclamation: A phased reclamation approach will be <br /> implemented. Reclamation will occur in two (2)phases: <br /> ■ Reclamation Phase 1: Backfill—Reclamation Phase 1 will backfill excavated <br /> with on-site overburden, crusher fines, wash plant fines, and imported clean, <br /> uncontaminated material. Backfill will occur concurrently with mining whenever <br /> possible; however,backfill will continue after mining is complete. Reclamation <br /> Phase 1 will be complete when backfill of the entire Site is within approximately 2 <br /> - 3 feet of final grade as indicated by ASCI survey. Should completion of <br /> Reclamation Phase 1 not be feasible within five(5)years from the date ASCI <br /> informs the DRMS that all material extraction and stockpile removal is complete, <br /> an extension will be submitted based on the remaining backfill volume required at <br /> that time. <br /> ■ Reclamation Phase 2: Grading,Topsoil, Seeding,and Growth Monitoring—In <br /> Reclamation Phase 2,ASCI will remove existing structures, grade Site contours <br /> for the±87 acres of affected area to approximately twelve (12) inches below the <br /> final grade, and place a minimum final cover topsoil layer twelve (12) inches thick <br /> across the affected area. Changes to topography will be made as necessary until the <br /> final grade is within acceptable limits and returned to pre-mining elevations. Once <br /> final grade is achieved, site seeding, fertilizing, and mulching will occur in the <br />