PERMFILE71521

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 9/11/2006
• 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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4
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right Freeboard Freeboard Freeboard
Sideslope
Width (R)} Sideslope Slope (%) Mutt. x
Ratio Ratio Depth (R) % of Depth
(VxD)
3.00 1.5:1 1.5:1 50.0 0.30
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 12.35 ds
Depth: 0.12 ft 0.42 R
Top Width: 3.36 ft 4.26 ft
Velocity*:
X-Section Area: 0.38 sq R
Hydraulic Radius: 0.111
Froude Number*;
Manning's n*:
Dmin: 6.00 in
D60: 18.00 in
Dmax: 22.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #8 (Erodible Channel)
FS
Triangular Erodible Channel Inputs:
Material: Shales and hardpans
Left Right Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n Mult
x Velocity
Ratio Rato .
Depth (R) % of Depth (VxD) (fps)
5.0:1 20.0:1 2.0 0.0250 0.30 6.0
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 5.66 cfs
Depth: 0.40 ft 0.70 R
Top Width: 9.94 ft 17.44 R
Velocity: 2.86 fps
X-Secton Area: 1.98 sq ft
Filename: POND F.sc4
Printed 09-01-2006
h'PPRave~
TR-43 q~„~ay App. B-13 09106