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Sedgwick County Road and Bridge Gravel Pit Page 3 <br /> 112(c) Operation Reclamation Permit February 25, 2024 <br /> cubic yards in volume. Each basin will have at least 1,050 cubic yards of volume. This should be <br /> sufficient to settle any collected sediment during extreme rainfall events. <br /> 4.3 Projected Extraction Rate <br /> 5,000 tons of gravel are expected to be removed each year for 20 years. Mining shall be separated <br /> into 3 phases, approximately 7 years for each phase. In each phase about 33,000 tons of material <br /> will be extracted. <br /> 4.4 Mining Phases <br /> Each phase of mining will last approximately 7 years. There are 3 phases. See Figure 3 for <br /> a map of the proposed mining phases. <br /> Phase 1 2024-2030 <br /> Phase 2 2031-2037 <br /> Phase 3 2038-2044 <br /> Phase 1: <br /> Description: Removal of the top of the northwest dune that progresses downward and <br /> outward to the contour outlined in red in Figure 5. <br /> Area: 1.87 acres <br /> Location: <br /> Top of Dune: Lat: 40.949377° Long: -102.240557° <br /> Volume Extracted: 31,657 cubic yards <br /> Depth of Extraction from top of dune: 24 feet <br /> Phase 2: <br /> Description: Removal of the top of dune directly east of first dune that progresses <br /> downward and outward to contour outlined in red in Figure 5. <br /> Area: 1.95 acres <br /> Location: <br /> Top of Dune: Lat: 40.949179° Long: -102.239440° <br /> Volume Extracted: 32,550 cubic yards <br /> Depth of Extraction from top of dune: 20 feet <br /> Z:IP%/ectslSedgweck County12023 Gravel Pit Perm,tt,nglPerm,t AEC <br />