2020-06-23_PERMIT FILE - M2020032

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with each pass . The east slope will be created as material removal progresses so that at the end only resoiling and seeding will be needed on the east slope . The building envelope (floor) area will have a slight grade from southeast to the north and west to preserve the historic drainage pattern across the property. All stormwater on the site will be directed towards the temporary settlement basin shown on the Reclamation Map, where it can soak in or be treated before release . This basin will be removed once reclamation is com- plete . Stormwater will not be retained on the site for more then 72 hours . Grading and shaping will run concurrent with mining so that if the project ended prematurely only resoiling of the disturbed area, grading, shaping and resoiling would be needed. Of the 9 . 99 acres ± in the permit area, approximately 7 . 0 acres ± will be disturbed. The remaining 2 . 99 acres will be the undisturbed are on the north. A 10 foot setback is used on the east to maximize the amount of level area that can be developed. The material will be excavated using scrapers and if needed push dozers . All of the material will be removed as pit run with no processing taking place on the site . The RECLAMATION PLAN MAP- E-2 shows how the area will look when mining ends and reclamation is complete . On-site equipment may include, but is not limited to, motor graders, motor scrapers, dozers and a water truck. All material will be transported off site for disposal, meaning no processing will take place on the project area . We expect the grading project to last for less then 8 months weather permitting. When topsoil is encountered, it will be stripped and stock- piled around the perimeter of the site or on the floor for use in reclamation. We will place an average of eight (8) inches of salvaged topsoil on the slopes . The floor will not be topsoiled initially as it will be under development until the facility are constructed. Topsoil will be saved for the area needing resoiling after the strictures and arena is completed. If the soil stockpiles remain undisturbed for more than one growing season it will be temporarily seeded using the approved seed mix at a rate of 12 . 8 lbs-pls per acre . We expect to have 7 . 0 acres ± or less disturbed at any-one- time . The bond estimate presented on page 24 shows the amount of land that will disturb at a worse case scenario. No sloping will be needed as the slope will be created as material removal is taking place . Track 4 Grading Project June 11, 2020 24