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

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Structure Detail;
Structure #16 (Erodible Channel)
DITCH J14
Triangular Erodible Channel Inputs:
Material: Alluvial silts colloidal
Left Right
Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope ( %) Manning's n
Velocity (fps)
Ratio Ratio
Depth (ft) % of Depth Mult.. x (VxD)
1.5:1 1.5:1 5.0 0.0250
0.30 5.0
Erodible Channel Results:
Filename: Pond J-10 Year Event 013014.so4 Printed 02 -04 -2014
TR -84 Volume XI, App. B -23 02/14
w/o Freeboard w/ Freeboard
Design Discharge:
Depth:
Top Width:
1.49 cfs
0.47 ft 0.77 ft
1.41 ft 2.31 ft
Velocity:
4.49 fps
X- Section Area:
H draulic Radius:
y
0.33 sq ft
....... -- - - - - -- _._ - ..........
0.196 ft
.._ .... - -.. --
Froude Number:
— ..
1.63
Filename: Pond J-10 Year Event 013014.so4 Printed 02 -04 -2014
TR -84 Volume XI, App. B -23 02/14