2014-09-02_PERMIT FILE - C1996083A ‎(2)‎

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 9/2/2014
• 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 #8 (Erodible Channel
DITCH J4
Triangular Erodible Channel Inputs:
Material: Shales and hardpans
Left Right
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope { %) Manning's n
Depth:
Velocity (fps)
Ratio Ratio
Depth (ft) %of Depth Mutt, x (VxD)
Velocity:
— ------ ._.
1.5:1 1.5:1 0.1 0.0250
0.30
1 6.0
Erodible Channel Results:
Filename: Pond J-10 Year Event-01 3014.sc4
1
Printed 02 -04 -2014
TR -84 Volume XI, App. B -19 02/14
w/o f=reeboard w/ Freeboard
Design Discharge:
21.78 cfs
Depth:
2.68 ft 2.98 ft
Top Width:
8.03 ft 8.93 ft
Velocity:
— ------ ._.
2.03 fps
-
X- Section Area:
10.75 s q ft
Hydraulic Radius:
1.114 ft
Froude Number:
0.31
Filename: Pond J-10 Year Event-01 3014.sc4
1
Printed 02 -04 -2014
TR -84 Volume XI, App. B -19 02/14