PERMFILE58585

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 9/26/2005
• Doc Name: Appendix A to Appendix C -Report Dated 11/10/03
• Section_Exhibit Name: Coal Mine Waste Disposal Area No. 2
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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22
Left Right ~ Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n Mult
x Velocity
Ratio Ratio .
Depth (ft) % of Depth NxD) (fps)
1.5:1 1.5:1 2.0 0.0250 0.30 6.0
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 7.63 ffs
Depth: 1.03 ft 1.33 ft
Top Width: 3.09 ft 3.99 ft
Velocity: 4.79 fps
X-Section Area: 1.59 sq ft
Hydraulic Radius: 0.429
Froude Number: 1.18
Structure #26 (Culvert1
C-F2
Culvert Inputs:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater Loss Ccef.
(ft) (ft) (Xe)
36.00 2.00 0.0240 3.50 0.00 0.9f
Culvert Results:
Material: Riprap
Bottom Left Right Freeboard Freetx>ard Freeboard
Width (ft)} Sideslope Sideslope Slope (%) De th ft % of Depth Mult. x
p ()
Ratio Ratio (VxD)
3.00 1.5:1 1.5:1 2.0 1.00
Riprap Channel Results:
• Simons/OSM Method -Steep Slope Design
Design Discharge = 40.49 cfs
Minimum pipe diameter: 1 - 36 inch pipe(s) required
Structure #7 Ri rap Channel
D-F7
Trapezoidal Riprap Channel Inputs:
Filename: GobPileDitches.sc4
APP-B - 30 -
Printed 10-29-2003
11 /03