2010-05-25_REVISION - C1981008 (37)

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SEDCAD 4 for Windows Structure #1 NeQetated Channel) Mined Land Disturbed (poor) Trapezoidal Vegetated Channel Inputs: Material: Grass mixture Stability Class D w/o Freeboard Stability Class D w/ Freeboard Capacity Class 8 w/o Freeboard Capacity pass B w/ Freeboard Design Discharge: Depth: 19.67 cis 0.38 ft 1.38 ft 19.67 cis 0.71 ft 1.71 It Top Width: 27.52 ft 47.52 ft 34.28 ft 54.28 ft Velocity: 2.20 fps 1.02 fps X- Sedan Area: 8.93 sq ft 1.33 ft 19.38 sq ft 1.65 ft Hydraulic Radius: 0.324 ft 46.60 ft 0.564 ft 53.02 ft Froude Number: 0.68 0.24 Roughness Coefficient: 0.0646 0.2027 Structure #1 NeQetated Channel) Mined Land Disturbed (poor) Trapezoidal Vegetated Channel Inputs: Material: Grass mixture Vegetated Channel Results: Stability eft Bottom fight Retardance Freeboard Freeboard Freeboard Capacity Si Width (ft) Ratio Sid Slope (%) Ratio Cusses Depth (ft) % of Depth MVxD) Velocity Class B w/o Class B w/ (f0,) 20.00 10.0:1 10.0:1 4.1 D, B 1.00 10.00 5.0 Vegetated Channel Results: Structure #5 (Pond) pond Pond Inputs: Initial Pool Elev: 5,611.90 ft Initial Pool: 4.99 ac -ft Filename: 011 POND 10YR post mine 1 day pump 15sept09.so4 Printed 09- 16.2009 REVISED AUGUST 2009 Attachment 2.05.3(3) -14 -19 Stability Stability Capacity Capacity Class D w/o Class D w/ Class B w/o Class B w/ Freeboard Freeboard Freeboard Freeboard Design Discharge: 14.37 cfs 14.37 cis Depth: 0.33 ft 1.33 ft 0.65 ft 1.65 ft Top Width: 26.60 ft 46.60 ft 33.02 ft 53.02 ft Velocity: 1.87 fps 0.83 fps X- Section Area: 7.69 sq ft 17.26 sq ft Hydraulic Radius: 0.289 ft 0.522 ft Froude Number: 0.61 0.20 Roughness Coefficient: 0.0704 0.2345 Structure #5 (Pond) pond Pond Inputs: Initial Pool Elev: 5,611.90 ft Initial Pool: 4.99 ac -ft Filename: 011 POND 10YR post mine 1 day pump 15sept09.so4 Printed 09- 16.2009 REVISED AUGUST 2009 Attachment 2.05.3(3) -14 -19