2010-08-10_REVISION - C1981008 (9)

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SEDCAD 4 for Windows *Sediment Storage: 0.00 ac -ft - Dead Space: - -- 2 0.00% *No sediment capacity defined Perforated Riser Riser Riser Height Barrel Barrel Barrel Slope Number of Spillway Elev Diameter (ft) Diameter Length (ft) (%) Manning's n Holes per I (ft) (in) (in) Slope ( %) n Elev 24.00 10.00 24.00 100.00 1.181 0.0150 5,615.50 1 Straight Pipe Barrel Barrel Entrance Tailwater Tailwater Barrel Manning's Spillway Diameter Length Loss Depth Length Slope ( %) n Elev (ft) (in) (ft) Coefficient (ft) 18.00 40.00 1.00: 0.0150 5,616.00 0.50 0.00 Straight Pipe Barrel Barrel Entrance Tailwater H'graph Detention Time: Barrel Manning's Spillway Spillway Diameter Length Loss Depth Dew ater Time: - - - - - -- ----------------- Slope ( %) n Elev (ft) Elev (ft) (in) (ft) Coefficient (ft) 18.00 40.00 1.001 0.0150 5,616.00 0.50 0.00 Straight Pipe Barrel Barrel Entrance Taihwater H'graph Detention Time: 13.29 hrs Barrel Manning's Spillway Diameter Length Loss Depth Dew ater Time: - - - - - -- ----------------- 3.03 days -- -- - - - - -- Slope (%) n Elev (ft) (in) (ft) Coefficient (ft) 18.00 40.00 1.001 0.0150 5,616.00 0.50 0.00 Pond Results: Dewatenfig time is calculated from peak stage to lowest spillway Elevation - Capacity- Discharge Table Filename: 011POND 10YR post mine 1day pump 15septD9.sc4 9 Printed 09-16 -2009 REVISED AUGUST 2009 Attachment 2.05.3(3) -22 -18 Peak Elevation: 5,615.82 ft H'graph Detention Time: 13.29 hrs Pond Model: CSTRS Dew ater Time: - - - - - -- ----------------- 3.03 days -- -- - - - - -- Trap Efficiency: 95.17% Dewatenfig time is calculated from peak stage to lowest spillway Elevation - Capacity- Discharge Table Filename: 011POND 10YR post mine 1day pump 15septD9.sc4 9 Printed 09-16 -2009 REVISED AUGUST 2009 Attachment 2.05.3(3) -22 -18