2010-05-07_PERMIT FILE - C2009087 (58)

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Civil Software Design -- SEDCAD+ Version 3.1 Copyright (C) 1987 -1992. Pamela J. Schwab. All rights reserved. Company Name: Peabody Coal Company • Filename: C: \SEDCAD3 \SEN2 \OFFICEI User: TJW Date: 12 -01 -1992 Time: 11:34:59 OFFICE DITCH (10yr-24hr Storm) Storm: 1.60 inches, 10 year -24 hour, SCS Type II Hydrograph Convolution Interval: 0.1 hr NON-POND STRUCTURE INPUT /OUTPUT TABLE J1, B1, S1 UPPER REACH OF DITCH Drainage Area from J1, B1, S1, SWS(s)1: 2.9 acres Total Contributing Drainage Area: 2.9 acres R Runoff Peak Volume Discharge (ac -ft) (cfs) IN /OUT 0.11 1.53 J1, B1, S2 LOWER REACH OF DITCH Drainage Area from Ji, B1, S2, SWS(s)1: 0.1 acres Total Contributing Drainage Area: 3.0 acres MATERIAL: Rock Riprap Trapezoidal Riprap Channel Steep Slope Design - Simons /OSM Method • Design Bottom Manning's Discharge Width ZLeft ZRight Slope n (cfs) (ft) 1.59 10.0 3-0:1 3.0:1 10.0 0.030 7- 6 -3 -26 ry£. MATERIAL: GRASS MIXTURE Triangular Vegetated Channel Limiting Variable: Velocity = 5.000 fps Design Bottom Discharge Width ZLeft ZRight Slope (cfs) (ft) - - - -- M -------- - 1.53 -- 3.0 1 3.0:1 3.3 • Top Manning's Hydraulic Froude Retardance Depth Velocity Width N Radius Number Class (ft) (fps) (ft) == =0.196 - - -- Stability C - == 0.82 - - - == 0.744.9 5.7 0.310 0.390 0.450 0.20 0.13 Capacity B 0.95 0.51 w/ Freeboard + B 0.95 5.7 R Runoff Peak Volume Discharge (ac -ft) (cfs) IN /OUT 0.11 1.53 J1, B1, S2 LOWER REACH OF DITCH Drainage Area from Ji, B1, S2, SWS(s)1: 0.1 acres Total Contributing Drainage Area: 3.0 acres MATERIAL: Rock Riprap Trapezoidal Riprap Channel Steep Slope Design - Simons /OSM Method • Design Bottom Manning's Discharge Width ZLeft ZRight Slope n (cfs) (ft) 1.59 10.0 3-0:1 3.0:1 10.0 0.030 7- 6 -3 -26 ry£.