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yards. Once topsoil is stripped from this azea, the material excavated from the pond will be placed <br />• on the site immediately to the east. <br />Volume Report Lined Untreated Water Pond 6/14/200716:31 <br />Comparing GRiD file: //GREGl/PROJECTS/BNERGY FUELS URANIUM/AUTOCAD/POND <br />SIZE.GRD <br />Plane elevation: 7050.00 <br />"Grid corner locations: 1986673.40,1314596.63 to 1986822.53,1314709.17" <br />"Grid resolution X: 50, Y: 50 Grid cell size X: 2.98, Y: 2.25" <br />"Area in Cut : 0.1 S.F., 0.00 Acres" <br />"Area in Fill: 4,259.3 S.F., 0.10 Acres" <br />"Total inclusion azea: 4,259.4 S.F., 0.10 Acres" <br />Cut to Fill ratio: 0.00 <br />Average Cut Depth: 0.01 Average Fill Depth: 5.02 <br />Max Cut Depth: 0.04 Max Fill Depth: 12.00 <br />Density: 126.00 (lbs/ft^3) <br />Cut (C.Y.) /Area (acres): 0.00 <br />Fill (C.Y.) /Area (acres): 8102.12 <br />"Cut volume: 0.0 C.F., 0.00 C.Y., 0.00 Tons" <br />"Fill volume: 21,390.6 C.F., 792.24 C.Y., 1,347.61 Tons" <br />= 159,870 GALLONS USING 2H:1 V SLOPES AND 1.5 FT FREEBOARD <br />The 1.5-foot berm azound the surface of the lined untreated water pond provides approximately <br />78,000 gallons (i.e., 1.5 feet over 0.16 acre) of additional capacity in event of a large storm event or <br />upset conditions. <br />16.1 Whirlwind Surface Drainage <br />Surface drainage in the Whirlwind portal azea will include installation of long-term drainage <br />controls in the facility areas (i.e., buildings and water treatment system) and phased drainage <br />controls at the ore pad and waste pile azeas. The proposed drainage ditches and culverts are <br />illustrated on Map C-6. Collection ditches within the site aze shown in light blue and diversion <br />ditches around the site aze shown in purple. All collection ditches drain to the sediment pond while <br />diversion ditches divert surface water runoff from undisturbed areas azound the site. The sediment <br />pond is sized to safely pass the 100-year storm event with a dischazge rate of less than 3 cfs. The <br />pond will remain throughout the life of mine and during the initial period after reclamation until <br />vegetation has been adequately reestablished over the mine azea. <br /> <br />Whirlwind Mine July 07 D-26 <br />