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SEDCAD 4 for Windows <br />r:nn ;r H+ t aaa _7nn7 P—i. 1 QrK—.K <br />12 <br />Structure #44 (Null) <br />West Side Stockpile Berm <br />Structure #42 (Null, <br />FA -6A <br />Structure #43 (Null <br />FA -6 <br />Structure #45 (Pond) <br />Upper Coal Stockpile Sump (USCC) <br />Pond Inputs: <br />Structure Detail; <br />Initial Pool Elev: 6,664.20 ft <br />Initial Pool: 2.31 ac -ft <br />Straight Pipe <br />• <br />Emergency Spillway <br />Spillway Elev Crest Length Left Right Bo!IMO <br />(ft) Sideslope Sideslope Widft) <br />6,665.00 25.00 3.00:1 3.00:1 .00 <br />Pond Results: <br />Peak Elevation: 6,665.09 ft <br />Dewater Time: 1.30 days <br />De watering time is calculated from peak stage to lowest spillway <br />Elevation- Capacity-Discharge Table <br />U <br />Barrel <br />Barrel <br />Entrance Tailwater <br />B <br />Barrel <br />:Manning <br />Spillway <br />Diameter <br />Length <br />. <br />Loss Depth <br />Slope ( %) <br />n <br />Elev (ft) <br />(in) <br />(ft) <br />( <br />Coefficient (ft) <br />12.00 <br />50.00 <br />2.501 0.0240 <br />6,664.001 <br />0.90 0.00 <br />Filename: PM- 1_Operational_100Yr24Hr 1209.sc4 <br />2.05.3 -E2.G -2.12 <br />Printed 12 -23 -2009 <br />12/09 <br />