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SEDCAD 4 for Windows <br />r'-Mm ht 1QQR - 9!11!1 P -1. I Qrh, -h <br />Structure Detail; <br />Structure #15 (Pond <br />Impndmnt upstrm of main pond <br />Pond Inputs: <br />Pond Results: <br />Initial Pool Elev: 90.01 ft <br />Initial Pool: <br />0.00 ac -ft <br />*Sediment Storage: <br />0.00 ac -ft <br />Dead Space: <br />20.00% <br />*No sediment capacity defined <br />Emergency Spillway <br />Spillway Elev Crest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (ft) <br />94.40 20.00 2,00:1 2.00:1 20.00 <br />Peak Elevation: 95.78 ft <br />H'graph Detention Time: <br />0.22 hrs <br />Pond Model: <br />CSTRS <br />Dewater Time: <br />0.55 days <br />Trap Efficiency: <br />47.60% <br />Dewatering time is calculated from peak stage to lowest spillway <br />Elevation- Capacity- Discharge Table <br />Elevation <br />Area <br />(ac) <br />Capacity <br />(ac -ft) <br />Discharge Dewater <br />Time <br />(CFs) (hrs) <br />90.00 <br />0.050 <br />0.000 <br />0.000 Top of Sed. Storage <br />90.01 <br />0.050 <br />0.001 <br />0.000 <br />90.50 <br />0.062 <br />0.028 <br />0.000 <br />91.00 <br />0.075 <br />0.062 <br />0.000 <br />91.50 <br />0.089 <br />0.103 <br />0.000 <br />92.00 <br />0.104 <br />0.151 <br />0.000 <br />92.50 <br />0.121 <br />0.207 <br />0.000 <br />93.00 <br />0.139 <br />0.272 <br />0.000 <br />93,50 <br />0.158 <br />0.347 <br />0.000 <br />94.00 <br />0.179 <br />0.431 <br />0.000 <br />Filename: WTPond 25 24 active mining case 082610.sc4 Printed 08 -26 -2010 <br />Exh. 7 -20C -104 Revision Date: 8/27/2010 <br />Revision No.: TR -88 <br />