2025-07-10_PERMIT FILE - C1996083

• Permit No: C1996083
• IBM Index Class Name: Permit File
• Doc Date: 7/10/2025
• Doc Name: Appendix A through Appendix C
• Section_Exhibit Name: Volume IX Coal Mine Waste Disposal Area No. 2
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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Structure Detail;
9.1-ilclure #18 , /av Chatlnel)
F14 2% Channel Section
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Width (ft) Sideslope Sideslope Slope (%)
Ratio Ratio(ft)
Depth % of Depth Mult. x (VxD)
3.00 1.5:1 1.5:1 2.0
1.00
Riprap Channel Results:
PADER Method - Steep Slope Design
Filename: Pond F 100Year.sc4
Printed 01-07-2015
TR -98 App. B-43 01/15
w/o Freeboard w/ Freeboard
Design Discharge:
Depth:
11.22 cls
0.68 ft 1.68 ft
Top Width:
Velocity:
5.03 ft 8.03 ft
4.14 fps
X -Section Area:
2.71 sq ft
Hydraulic Radius:
0.498 ft
Froude Number:
0.99
Manning's n:
0.0320
Dmin:
1.00 in
D50:
1.50 in
Dmax:
3.00 in
Filename: Pond F 100Year.sc4
Printed 01-07-2015
TR -98 App. B-43 01/15