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 #47 (Vegetated Channel)
Ditch to Coal Stockpile Pond
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right Retard
Bottom ance
Freeboard
Freeboard Freeboard
Limiting
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio Classes
Mult. x
Depth (ft) % of Depth
Velocity
(fps)
Depth:
(VxD)
1.04 ft
12.00 2.0:1 2.0:1 3.0 D, B
14.56 ft
7.0
Vegetated Channel Results:
Structure #46 (Null
Null above Coal Stockpile Pond
Null
Structure #44 (Null)
Addition from the western area
Structure #45 (Pond)
Coal Stockpile Pond
Pond Inputs:
Initial Pool Elev:
Stability Stability
Class D w/o Class D w/
Freeboard Freeboard
Capacity Capacity
Class B w/o Class B w/
Freeboard Freeboard
Design Discharge:
33.10 cfs
33.10 cfs
Depth:
0.64 ft
1.04 ft
Top Width:
14.56 ft
16.18 ft
Velocity:
3.89 fps
2.25 fps
X -Section Area:
8.51 sq ft
14.71 sq ft
Hydraulic Radius:
0.573 ft
0.882 ft
Froude Number:
0.90
0.42
Roughness Coefficient:
0.0457
0.1054
Structure #46 (Null
Null above Coal Stockpile Pond
Null
Structure #44 (Null)
Addition from the western area
Structure #45 (Pond)
Coal Stockpile Pond
Pond Inputs:
Initial Pool Elev:
7,212.79 ft
Initial Pool:
2.49 ac -ft
*Sediment Storage:
0.00 ac -ft
Dead Space:
20.00%
7
Filename: Initial Disturb JustCoalPond 1024v4.sc4 Printed 05-09-2017
Exh. 7-23M-36 Revision Date: 5/18/2017
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