2011-05-19_PERMIT FILE - M2011029

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a 0/0, OT REGEIVED JUBILEE VENTURE, LLC APR 12 2011 EAGLE MINE PROJECT WATER REQUIREMENTS IA?TT0.ETRECE?SvNEERS The Jubilee Venture, LLC Eagle Mine Project is a proposed gold placer mining operation in the NEI A of Sec. 2, T. 10 N., R. 92 W., 6a' PM in the northern part of Moffat County, Colorado. This is in Colorado Div. of Water Resources District 54, an underappropriated district. The milling of the placer material will be done in a gravity plant employing plain water as the transporting agent for the ore as it passes through the plant. The proposed 200 ton per day mill will require 240,000 gallons (0.66 acre feet) of water per day, the water to be supplied from a 75 ft. deep well on the site. None of the water will actually be consumed except for evaporation losses. The remainder will be returned to the water table or be recirculated in the plant water system. The total used (not consumed) in a 180 day seasonal operation (May through October) will be approximately 132 acre feet. EVAPORATION There are several charts and tables used to project water pan evaporation that show that it will be 37 inches during the 180 day season. The literature I have researched indicates the pan evaporation is as good a factor as any to apply in industrial operations. The tilling of soil doesn't apply here. The sources for evaporation are as follows: Water storage pond surface - 40' X 60'= 2400 ft2 Mill tailings pond surface - 20' X 32'= 640 ft2 Plant open surfaces (sluice boxes, vibrating table, etc.) 720 ft2 Tailings stockpile surface (tailings removed from pond and stacked) 1966 ft2 Water for dust control on roads -1000 gallons per day At 37" per 180 day period the water storage pond will evaporate 0.17 acre ft. Tailings pond (180 days) 0.05 acre ft. Plant open surfaces (180 days) 0.05 acre ft. Tailings stock pile 0.14 acre & Water for dust control (1000 gpd for 180 days) 0.21 acre ft. Total water evaporated per 180 day period 0.62 acre fl. WATER SEEPAGE Water seepage back into the ground will occur in the unlined tailings pond and under the wet tailings storage where the tailings drain either into the pond or back into the ground but it is difficult to say how much will go to either place. The drained tailings are then hauled back into mined out areas as backfill. Because this will be an ongoing process, it is almost impossible to estimate how much evaporation will occur off of the backfilled tailings. There will be some but most will probably drain back into the ground. There are 1680 f12 of wetted surface in the tailings pond which should soak up 0.7 gpolft2 or 1176 gallons per day. Over 180 days that amounts to 4.9 acre fl. The ground under the tailings pile or tailings storage should soak up 1163 gpd or 4.81 _ acre ft. per 180 '4 2_/1