2018-04-02_PERMIT FILE - C1981019A ‎(20)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 4/2/2018
• Doc Name: Sediment Pond and Associated Modeling During Mining
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part C
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
5
Structure Detail;
Structure #11 (Vegetated Channel
D2 Ditch
Trapezoidal Vegetated Channel Inputs:
Material: Tall fescue
Bottom
Left Right Retardance Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) f DMult. x Velocity
Width (ft) Ratio Ratio Classes Depth (ft) % of (VxD) (fps)
12.00 2.0:1 2.0:1 4.9 D, B 7.0
Vegetated Channel Results:
Structure #8 (Vegetated Channel
D6 Ditch
Trapezoidal Vegetated Channel Inputs:
Material: Kentucky bluegrass
Bottom
Left Right Retardance Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Classes Mult. x Velocity
Width (ft) Ratio Ratio Depth (ft) % of Depth (VxD) (fps)
20.00 2.0:1 2.0:1 5.9 D, B 6.0
Vegetated Channel Results:
Filename West Side Temp Spoil Pile Model 25yr24hr sc4 Printed 01-17-2018
Page Exh. 7-23C-35 Revision Date: 1/19/18
Revision No.: TR -118
Stability Stability
Class D w/o Class D w/
Freeboard Freeboard
Capacity Capacity
Class B w/o Class B w/
Freeboard Freeboard
Design Discharge:
20.45 cfs
20.45 cfs
Depth:
0.45 ft
0.77 ft
Top Width:
13.80 ft
15.10 ft
Velocity:
3.52 fps
1.95 fps
X -Section Area:
5.80 sq ft
10.49 sq ft
Hydraulic Radius:
0.414 ft
0.678 ft
Froude Number:
0.96
0.41
Roughness
0.0519
0.1305
Coefficient:
Structure #8 (Vegetated Channel
D6 Ditch
Trapezoidal Vegetated Channel Inputs:
Material: Kentucky bluegrass
Bottom
Left Right Retardance Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Classes Mult. x Velocity
Width (ft) Ratio Ratio Depth (ft) % of Depth (VxD) (fps)
20.00 2.0:1 2.0:1 5.9 D, B 6.0
Vegetated Channel Results:
Filename West Side Temp Spoil Pile Model 25yr24hr sc4 Printed 01-17-2018
Page Exh. 7-23C-35 Revision Date: 1/19/18
Revision No.: TR -118