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<br />SEDCAD 4 for Windows <br />r~,,,,r:,.m ivva .>rv~v vemee~.i trr~...~n <br />29 <br />Dead Space: 20.00 <br />*Sediment capacity based on Average Annua/ R of 10.0 for I year(s) <br />Perforated Riser <br />Riser <br />Riser Height Barrel <br />Barrel Barrel Slope <br />Spillway Elev <br />' Number of <br />Diameter (ft) Diameter Length (R) (a~) Manning <br />s n (ft) Holes per <br />(in) (in) Elev <br />18.00 16.00 18.00 150.00 2.00 0.0150 7,071.00 2 <br />Emeroencv Soillwa <br />Spillway Elev Crest Length Left Right Bottom <br />(ft) Sideslope Sideslope Width (R) <br />7,077.00 30.00 2.00:1 2.00:1 30.00 <br />Pond Results: <br />Peak Elevation: 7,070.68 ft <br />H'graph Detention Time: 10.72 hrs <br />Pond Model: CSTRS <br />Dewater Tme: 1.56 days <br />Trap Effaency: 63.16 <br />Dewatering time is ra/cu/aced ham peak stage to /owestspi//way <br />Elevation-Capacity-Discharge Table <br /> <br />Elevation Area <br /> <br />(ac) Capacity <br /> <br />(ac-ft) Discharge Dewater <br />Time <br />(~s) (hrs) <br />7,057 .25 0.150 0.000 0.000 Top of Sed. Storage <br />7,057 .50 0.155 0.039 0.000 <br />7,058. 00 0.165 0.119 0.000 <br />7,058 .50 0.176 0.204 0.000 <br />7,059 .00 0.187 0.294 0.000 <br />7,059. 50 0.198 0.391 0.000 <br />7,060 .00 0.209 0.492 0.000 <br />7,060 .50 0.220 0.600 0.000 <br />7,061. 00 0.231 0.712 0.000 <br />7,061. 50 0.243 0.831 0.000 <br />7,062 .00 0.254 0.955 0.000 <br />7,062. 50 0.266 1.085 0.000 <br />7,063. 00 0.279 1.221 0.000 <br />7,063. 50 0.291 1.369 0.000 <br />• <br />Filename: STSec28Ten24.030807.sc4 Printed 03-09-2007 <br />Exh. 7-20A-33 Revision Date: 3/12/07 <br />Revision No.: PR-02 <br />