PERMFILE114540

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 3/20/2007
• Doc Name: Appendix A to Appendix C Report, 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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Structure #18 Ri rap Channe/~
• F14
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom LeR Right Freeboard Freeboard Freetxurd
Width R Sideslope Sideslope Slope (%)
( )} ° Mult. x
Ratio Ratio Depth (R) /o of Depth ~/xD)
3.00 1.5:1 1.5:1 50.0 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 26.54 cfs
Depth: 0.19 ft 1.19 ft
Top Width: 3.56 ft 6.56 ft
Velodty*:
X-Section Area: 0.62 sq R
Hydraulic Radius: 0.168
Froude Number*:
Manning's n*:
Dmin: 7.00 in
D50: 21.00 in
Dmax: 26.25 in
Velocity and Manning's n calculations may not apply for this method.
Structure #20 Ri rap Channel
F16
Trapezoidal Riprap Channel Inputs:
Material: Riprap

Bottom LeR Right Freeboard Freeboard Freeboard

Width (R)} Sideslope Sideslope Slope (%)
Depth (R) % of Depth Mult. x
Ratio Rato (VxD)
3.00 1.5:1 1.5:1 10.0 1.00
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
Filename: POND F.sc4
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App. B - 16
Printed 09-27-2006