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~= Rh~b•t iq /nl. Z <br />UJ~oming Fuel Compon~ <br />• INTEROOFFICE CORRESPONDENCE <br />TO: Mike Kolin ~~.. "~ November 10, 1987 <br />FROM: Dave Stout <br />iN qE: Results of Required Annual Pond Surveys - Ponds 006 & 007, <br />New Elk [dine, Permit C-012-81 <br />On August 25, 1987, Steve Magnuson and I surveyed Ponds 006 and <br />007. The results are attached. Pond U07 requires 6.6 acre-feet <br />of capacity above the 10U8 sediment level to handle a 10-year <br />24-hour runoff event. Currently this pond has 5.9 acre-feet of <br />capacity. WFC needs to remove 0.7 acre feet or approximately <br />1,129 cubic yards. Approximately 1,111 cubic yards could be <br />removed by cleaning an area 200 feet east of the inlet 75 feet <br />wide and 2 feet deep. <br />The total surveyed volume for Pond 006 was 3.U4 acre-feet. <br />Design volume is 3.2 acre-feet. WFC should remove 0.16 acre-feet <br />or approximately 258 cubic yards. WFC can accomplish this by <br />removing approximately 2 feet of sediment in an area 90 feet from <br />the inlet and 40 feet wide. Total volume removed defined by this <br />area will be approximately 266 cubic yards. <br />In addition to these cleaning efforts, WFC must also complete <br />• construction of Pond 006 as per design. Attached are the design <br />specifications which includes the pumping system, construction of <br />the emergency spillway and gated principal spillway. <br />Design criteria for Ponds 006 and 007 can be found in Exhibit 19, <br />Volume 2 of the New Elk Permit Application. <br />DS/sb/61 <br />CC: S. Magnuson <br />