2010-12-08_PERMIT FILE - C1981008A (2)

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• SEDCAD 4 for Windows DOA _onm i c,K —h 9 Dead Space: *No sediment capacity defined Perforated Riser Riser Riser Height ', Barrel Barrel Barrel Slope Spillway Elev Number of Diameter (ft) Diameter Length (ft) ( %) Manning's n (ft) Holes per (in) (in) Elev 12.00 10.00 12.00 100.00 1.18 0.0150 5,615.50 1 Straight Pipe Barrel Barrel Entrance Tailwater H'graph Detention Time: Barrel Manning's Spillway Diameter Length Loss Depth Dewater Time: 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 Diameter Length Loss Depth Dewater Time: 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 Diameter Length Loss Depth Dewater Time: Slope ( %) n Elev (ft) (in} {ft) Coefficient (ft) 18.00 40.00 1.00 0.0150 5,616.00 0.50 0.00 Pond Results: Dewatering time is calculated from peak stage to lowest spillway Elevation - Capacity- Discharge Table Filename: 011 POND 25YR post mine 1day pump 15sept09.sc4 Printed 09 -16 -2009 • Revised February 2010 (PR06) Attachment 2.05.3(3) -22 -31 Peak Elevation: 5,616.57 ft H'graph Detention Time: 10.82 hrs Pond Model: CSTRS Dewater Time: 3.32 days Trap Efficiency: 93.29% Dewatering time is calculated from peak stage to lowest spillway Elevation - Capacity- Discharge Table Filename: 011 POND 25YR post mine 1day pump 15sept09.sc4 Printed 09 -16 -2009 • Revised February 2010 (PR06) Attachment 2.05.3(3) -22 -31