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EXHIBIT C MINING PLAN <br /> 1 . General Mining Plan <br /> Map E-2 outlines the mining plan, indicating that the mining activity will impact roughly 7.1 acres <br /> of the 9.9 acre affected area. Rock glacier will be mined using dozers and excavators for use in <br /> construction materials such as rip-rap, crushed rock, sand, screened rock, and substitute <br /> topsoil. Mining will extend to the bottom of the deposit, maintaining final mining slopes at <br /> 1.5H:1 V along the perimeter. Because of the nature of rock glaciers, the final cut slope will be <br /> left at a 1.5H:1V and allowed to weather in. This means the exposed matrix will be allow to be <br /> washed out by precipitation events. This sediment will be collected on the floor of the pit and <br /> then revegetated. The rock glacier is expected to extend to approximately the elevation of the <br /> creek. <br /> No blasting will occur at the London Borrow Pit. If refuse, acid, or toxic materials are <br /> unexpectedly encountered, these materials will be removed from the site and disposed of <br /> appropriately. <br /> Cross sections of mining can be seen on Map E-3. <br /> 2. Mining Timetable <br /> Mining operations at the London Borrow Pit are expected to take approximately 7.3 years to <br /> complete, based on an annual average production of 100,000 tons. Actual production rates will <br /> fluctuate based on market conditions. An approximate mining timetable based on this <br /> production and the phased mining plan is shown in Table D-1. <br /> Table D-1 Mining Timetable <br /> Description Time Required <br /> Construction of access road and working area. 1 months <br /> Mining 3 years <br /> Closure grading 1 month <br /> Substitute topsoil and seeding 1 month <br /> Total 3.3 years <br /> 3. Mine Facilities and Operation <br /> The site will contain the following facilities and equipment: <br /> Facilities: <br /> London Borrow Pit <br /> April 2024 C-1 Lewicki&Associates <br />