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Table D-3. Topsoil and Overburden Material Generated During Mining <br /> Material <br /> Generated(CY) <br /> Topsoil { 87,120 <br /> Overburden 116,160 <br /> The presence of the lake means that there will be more topsoil and overburden generated by <br /> stripping activities than needed for reclamation activities. The excess material will be used to <br /> achieve the grading shown in the Exhibit F maps and to augment topsoil thickness in areas <br /> above ten feet below the average water level of the lakes. Details pertaining to reclamation can <br /> be found in Exhibit E. <br /> 7. Stormwater — Diversions and Impoundments. <br /> Surface water from storms, known as stormwater runoff, will be collected in the mining pit during <br /> operations. As shown on Map G-1, the local drainage area consists principally of the North <br /> Hangs Mine and immediate area. The pit will act as a sediment pond during operations. No <br /> diversion of upstream waters will occur. Impounding of water will only be temporary, to trap <br /> sediment, with all stormwater runoff leaving the site within 72 hours. Exhibit G covers surface <br /> water management in detail. <br /> 8. Mining Timetable <br /> An approximate mining timetable for the mining operation is shown on Table D-4. <br /> Table D-4. Mining Timetable <br /> Years Activity <br /> 1-2 Stripping of processing area and initial pit of Phase 1. <br /> 2-15+ Sand and gravel mining. <br /> Over the life of the mine, a total of 1.5 million tons of material will be extracted at a rate of <br /> roughly 100,000 tons per year. This will result a mine life of approximately 15 years, depending <br /> on market conditions. <br /> 9. Disturbance Area <br /> Concurrent reclamation will take place as much as possible. The maximum unreclaimed <br /> disturbance area will be limited to 25 acres. See Exhibit L for a detailed discussion of the <br /> reclamation costs and bond calculations. <br /> North Hangs <br /> December 2024 D-5 Lewicki&Associates <br />