2015-12-07_GENERAL DOCUMENTS - M1974132

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Area in Fill: 362532.9 sq ft, 8.323 acres Total inclusion area: 364353.7 sq ft, 8.364 acres Cut to Fill ratio: 0.00 Average Cut Depth: 0.09 Average Fill Depth: 6.67 Cut (C.Y.) / Area (acres): 0.69 Fill (C.Y.) / Area (acres): 10713.66 Cut volume: 154.93 cubic ft, 5.74 cubic yards Fill volume: 2419563.51 cubic ft, 89613.46 cubic yards The fill volume of 2,419,563 cubic feet far exceeds the 894,400 cubic feet needed to contain the 100 year event, therefore the reservoir is adequate to prevent breaching into the pit and the sediment pond located within the mine area. The two principal ways that the gravel pit could affect the water quality of the area downstream is through poor sediment control within the site causing increased sedimentation downstream and by fuel leakage from a ruptured tank. As described in the mining plan, berms will line the entire downstream portions of the property and a large sediment pond will be employed to handle the 100 year event for all runoff within the mine area, therefore, no NPDES permit is needed. Any sediment - laden water resulting from the operation will be allowed to seep back in the ground at the sediment pond. Fuel leakage is also not a problem since all fuel tanks on site will be double -walled and specially designed to contain any spills. All equipment will be fueled by a service truck that makes a visit to the site as needed. 2. Groundwater The river mining will not encounter groundwater since the lowest elevation of extraction in the mine area is 6313 feet while the river elevation south of the pit is 6250 feet. As of March of 2002, no water has been encountered in all previous operations of the pit. There are no groundwater wells within reasonable distance to the operation that could be affected and even if any wells were within this distance, it would highly improbable that they would be Berry Pit 3/02 22