2017-07-18_PERMIT FILE - C1981019A ‎(2)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 7/18/2017
• Doc Name: Sediment Control for Initial Disturbance Coal Stockpile Pond Using Total Containment
• Section_Exhibit Name: Volume 18 Exhibit 7, Item 23 Part M
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure Detail:
Structure #1 (Erodible Channel)
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope (%) Manning's n
Width (ft)
Mult. x
Velocity
Ratio Ratio
Depth (ft) % of Depth (VxD)
(fps)
3.00 1.5:1 1.5:1 1.0 0.0250
X -Section Area:
6.0
Erodible Channel Results:
Structure #2 (Erodible Channel)
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Left Right
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
1.65 ds
Depth:
0.24 ft
Top Width:
3.71 ft
Velocity:
2.06 fps
X -Section Area:
0.80 sq ft
Hydraulic Radius:
0.207 ft
Froude Number:
0.78
Structure #2 (Erodible Channel)
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Left Right
Bottom
Freeboard
Freeboard Freeboard
Limiting
g
Sideslope Sideslope Slope (%) Manning's n
Width (ft) Ratio Ratio
Mult. x
Depth (ft) % of Depth
Velocity
(fps)
Top Width:
(VxD)
Velocity:
3.00 1.5:1 1.5:1 1.0 0.0250
X -Section Area:
6.0
Erodible Channel Results:
Filename: WCollectorDitch1024.sc4 Printed 05-15-2017
Exh. 7-23M-27 Revision Date: 5/18/2017
T?RG. • TR_111
w/o Freeboard w/ Freeboard
Design Discharge:
2.95 cfs
Depth:
0.33 ft
Top Width:
4.00 ft
Velocity:
2.52 fps
X -Section Area:
1.17 sq ft
Hydraulic Radius:
0.278 ft
Froude Number:
0.82
Filename: WCollectorDitch1024.sc4 Printed 05-15-2017
Exh. 7-23M-27 Revision Date: 5/18/2017
T?RG. • TR_111