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SEDCAD 4 for Windows <br />r.,.,,m~n++°oa o~~.,via i c.+.,.,en <br />Structure Detai/: <br />Structure #1 (Silt Fencel <br />pad runoff <br />Silt Fence Inputs: <br />Fence Flow Width along Land Slope Tie-back <br />Rate contour (ft) Height (ft) (y0) distance (ft) <br />(gpm/sq ft) <br />0.3 300.0 3.0 3.00 100.0 <br />*Sediment Storage: 0.00 ac-ft <br />*No sediment capacity defined <br />Silt Fence Results: <br />Peak Fence Stage: 0.55 ft <br />Peak Water Stage: 0.55 ft <br />Dewater Time: 0.50 days <br />Trap F3Fciency: 77.29 <br />Dewatering time is calculated from peak stage to lowest spillway <br />Stage-Capacity-Dischar4e Table <br />Fence Sage <br /> <br />(ft) Water Stage <br /> <br />(ft) Area <br /> <br />(ac) Capadty <br /> <br />(ac-ft) Discharge <br /> <br />(c~) Dewa[er <br />lime <br />(hrs) <br />0.00 0.00 0.000 0.000 0.000 Top of Sediment <br />0.10 0.10 0.023 0.001 0.020 1.60 <br />0.20 0.20 0.046 0.009 0.041 2.80 <br />0.30 0.30 0.069 0.010 0.062 2.05 <br />0.40 0.40 0.092 0.018 0.084 2.00 <br />0.50 0.50 0.115 0.028 0.106 2.05 <br />0.55 0.55 0.126 0.034 0.116 0.62 Peak Stage <br />0.60 0.60 0.138 0.041 0.128 <br />0.70 0.70 0.161 0.056 0.151 <br />0.80 0.80 0.184 0.073 0.175 <br />0.90 0.90 0.207 0.092 0.199 <br />1.00 1.00 0.230 0.114 0.223 <br />1.10 1.10 0.253 0.138 0.248 <br />1.20 1.20 0.275 0.165 0.273 <br />1.30 1.30 0.298 0.193 0.298 <br />1.40 1.40 0.321 0.224 0.324 <br />1.50 1.50 0.344 0.258 0.351 <br />1.60 1.60 0.367 0.293 0.378 <br />Filename: Mtncoal Pad - 0.6-acre.sc4 Printed 07-22-2005 <br />