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

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• SEDCAD 4 for Windows *Sediment Storage: 0.00 ac -ft Dead Space: 20.00 *No sediment capacity defined Perforated Riser Riser Barrel Number of Riser Height Barrel Barrel Slope Spillway Elev Diameter (ft) Diameter Length (ft) (off) Manning's n (ft) Holes per (in) (in) Elev 24.00 10.00 24.00 100.00 1.18 0.0150 5,615.50 1 Straight Pike Barrel Barrel Entrance Tailwater Peak Elevation: Barrel Manning's Spillway Diameter Length Loss Depth Pond Model: Slope ( %) n Elev (ft) (in) (k) Coefficient (ft) 18.00 40.00 1.00 0.0150 5,616.00 0.50 0.00 Straight Pike Barrel Barrel Entrance Tailwater Peak Elevation: Barrel ' Manning's Spillway Diameter length Loss Depth Pond Model: Slope ( %) I n Elev (k) (in) (ft) Coefficient (ft) 18.00 40.00 1.00 0.0150 5,616.00 0.50 0.00 • Barrel Barrel Entrance Tailwater Peak Elevation: Barrel Manning's Spillway Diameter Length Loss Depth Pond Model: 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 Pond Results: Dewatering time is calculated from peak stage to lowest spillway Elevation-Capacity-Discharge Table Filename: 011POND 10YR post mine 1day pump 15sept09.sc4 Printed 09 -16 -2009 • Revised February 2010 (P R06) Attachment 2.05.3(3) -22 -18 Peak Elevation: 5,615.82 ft H'graph Detention Time: 13.29 hrs Pond Model: CSTRS Dewater Time: 3.03 days Trap Efficiency: 95.17% Dewatering time is calculated from peak stage to lowest spillway Elevation-Capacity-Discharge Table Filename: 011POND 10YR post mine 1day pump 15sept09.sc4 Printed 09 -16 -2009 • Revised February 2010 (P R06) Attachment 2.05.3(3) -22 -18