2014-06-04_PERMIT FILE - C1996083A

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 6/4/2014
• 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 4.0
I Q,I—h
East Clean Water Diversion X7.5% - 10 Year Event
Material: Riprap
Triangular Channel
Left lUbht
Sldeslope Sideslope Slope (%)
Freeboard Freeboard Freeboard
Ratio Ratio
Depth (ft) % of Depth Molt, x (VxD)
1.5,1 1.5:1 7.5
1.00
PADER Method - Steep Slope Design
Flow Derived from:
Drainage Area "D" (10-year): 3.47
W. Div. Ditch #1 (10-Year): 4.44
Mine Water discharge: 0.50
Individual SWS: 0.88
Total: 9.29
SEDGAD Utility Run
Printed 11-21-2013
I
TR-88 Volume X1, App. B-72 05/14
w/o. Freeboard w/ Freeboard
Design Discharge:
9.29 cfs
Depth:
0.98 ft 1.98 It
Top Width:
2.95 ft 5.95 ft
Velocity:
5.92 fps
-X-Section Area:
1.45 sq ft
Hydraulic Radius.,
0.409 ft
Froude Number:
1.49
Mannlng's n:
0.0380
Dmln:
2.00 In
DSO:
3.00 In
Dmax:
4.50 In
Flow Derived from:
Drainage Area "D" (10-year): 3.47
W. Div. Ditch #1 (10-Year): 4.44
Mine Water discharge: 0.50
Individual SWS: 0.88
Total: 9.29
SEDGAD Utility Run
Printed 11-21-2013
I
TR-88 Volume X1, App. B-72 05/14