2014-09-22_PERMIT FILE - C1996083A ‎(2)‎

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 9/22/2014
• Doc Name: Appendix B - Protection of Hydrologic Balance
• Section_Exhibit Name: Volume XI Coal Mine Waste Disposal Area No. 3
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure Detail;
Structure #7 jErodib /e Channel)
DITCH J3
Trapezoidal Erodible Channel Inputs:
Material; Shales and hardpans
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Width (ft) Sideslope Sideslope Slope Manning's n
Depth,
Velocity (fps)
Ratio- Ratio
Depth (ft) % of Depth MuIL x (1hcD)
Velocity:
3.00 1.5:1 1.5:1 0.6 0.0250
0.30
6.0
Erodible Channel Results:
Filename: Pond J100 Year Event-1 10513.sc4
1
Printed 11 -24 -2013
TR -84 Volume XI, App. B-49 02/14
w/o Freeboard w/ Freeboard
Design Discharge:
33.31 cfs
-1.50
Depth,
_ ft 1.80 ft
Top Width:
7.50 ft 8.40 ft
Velocity:
4.23 fps
X- Section Area:
7.87 sq ft
Hydraulic Radius:
0.936 ft
Froude Number:
0.73
Filename: Pond J100 Year Event-1 10513.sc4
1
Printed 11 -24 -2013
TR -84 Volume XI, App. B-49 02/14