2020-10-12_PERMIT FILE - M2020047

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EXHIBIT C Mining Plan a) Sediment extraction will be non-continuous and will occur at least twice per year. Conditions are favorable in late fall (September - November) and in the early spring (March-April). Each extraction effort will last 7 - 15 days, summing to approximately 30 days per year. b) The estimated depth to which sediment will be salvaged is 1 to 4 feet, totaling up to 600 cubic yards in 2020 and increasing up to 5 acre/feet per year following. As the site is a reservoir bed, with no existing vegetation, there will not be a re-vegetation plan except as described for the access path (part g of this exhibit). c) The quantity of overburden supplies and waste rock is estimated at 0 cubic yards. There is no overburden. d) The sediment we will use is on the surface of the reservoir bed. IE, depth of 0 feet. e) As this site is temporary, there will not be any structures or processing facilities erected. The access route will be from County Road 2, down the Paonia Reservoir Boat Ramp, and across the alluvial reservoir sediment to the desired site. An excavator, front end loader, or skid steer loader and dump truck(10 or 20 cubic yard capacity) will be used to remove the sediment, entering and returning by the route indicated above. f) The dimensions of the affected area encompass no more than an area of 4.4 acres in surface area. g) No improvements will be needed to County Road 2, or to the boat ramp for this site. However, equipment will need to be driven across the dry reservoir bed to harvest sediment. The small drainage entering the reservoir near the boat ramp has carved a channel in the alluvium in the reservoir bed. Depending on the morphology of the alluvial fan each year, it may be necessary to grade this channel to allow equipment to access the site and sediment. Additionally, this alluvial channel has a small amount of willows, which may need to be temporarily moved to allow access to the site. Any willows will be gently removed, keeping the root ball intact, and will be returned to their site upon completion of the excavation. To cross the channel, a temporary pipe will be placed to maintain the existing water path, with surrounding sediment piled on top of the pipe to enable it to be driven across. Pipe will be corrugated galvanized steel culvert pipe, 12" or 18" in diameter. The pipe will then be removed at the end of each excavation. The intended route is roughly 200 to 300 yards from the boat ramp, and will be no more than 20 yards wide. There are no improvements needed on this access route other than to cross the seasonal alluvial channel. This work does require a Nationwide Permit 33 permit from the Army Corps of Engineers, which we have obtained. We are in communication with Paonia State Park, Fire Mountain Canal and Reservoir Company, the North Fork Water Conservancy District, and Gunnison County. All are broadly supportive of this project and will be kept informed of specifics.