2016-08-08_PERMIT FILE - C1981019A ‎(115)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 8/8/2016
• Doc Name: Sediment Control System Analysis at End of Mining
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part I
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure Detail:
Structure #12 (Vegetated Channel)
D2 Upper
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right Retardance
Bottom
Freeboard Freeboard Freeboard
Limiting
Width ft Sideslope Sideslope Slope (%) Classes
() Ratio Ratio
o
Depth (ft) /o of Depth Mult. x (VxD)
Velocity
(fps)
12.00 2.0:1 2.0:1 2.2 D, B
0.81 ft
7.0
Vegetated Channel Results:
Structure #I1 (Riprap Channel)
D2 Lower
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Stability Stability
Class D w/o Class D w/
Freeboard Freeboard
Capacity Capacity
Class B w/o Class B w/
Freeboard Freeboard
Design Discharge:
45.50 cfs
45.50 cfs
Depth:
0.81 ft
1.27 ft
Top Width:
15.22 ft
17.07 ft
Velocity:
4.15 fps
2.47 fps
X -Section Area:
10.97 sq ft
18.41 sq ft
Hydraulic Radius:
0.703 ft
1.042 ft
Froude Number:
0.86
0.42
Roughness Coefficient:
0.0420
0.0919
Structure #I1 (Riprap Channel)
D2 Lower
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
12.00 2.0:1 2.0:1 30.6
0.15 ft
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
G
Filename: Rev3 PR04 Westside EOM 10024.sc4 Printed 02-13-2016
Exh. 7-23I-35 Revision Date: 2/15/2016
Revision No.: PR -04
w/o Freeboard w/ Freeboard
Design Discharge:
45.50 cfs
Depth:
0.15 ft
Top Width:
12.61 ft
Velocity*:
G
Filename: Rev3 PR04 Westside EOM 10024.sc4 Printed 02-13-2016
Exh. 7-23I-35 Revision Date: 2/15/2016
Revision No.: PR -04