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
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio Classes
Mult. x
Depth (ft) % of Depth
Velocity
(fps)
Depth:
(VxD)
1.00 ft
12.00 2.0:1 2.0:1 2.2 D, B
14.30 ft
7.0
Vegetated Channel Results:
Structure #11 (Riprap Channel)
D2 Lower
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Stability Stability
Class D w/o Class D w/
Freeboard Freeboard
Capacity Capacity
Class B w/o Class B w/
Freeboard Freeboard
Design Discharge:
20.51 cfs
20.51 cfs
Depth:
0.57 ft
1.00 ft
Top Width:
14.30 ft
15.99 ft
Velocity:
2.71 fps
1.47 fps
X -Section Area:
7.56 sq ft
13.95 sq ft
Hydraulic Radius:
0.519 ft
0.848 ft
Froude Number:
0.66
0.28
Roughness Coefficient:
0.0525
0.1347
Structure #11 (Riprap Channel)
D2 Lower
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft)
Ratio Ratio
Mult. x
Depth (ft) % of Depth
(VxD)
12.00 2.0:1 2.0:1 30.6
1 1
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 20.51 cfs
Filename Rev3 PR04 Westside EOM 1024 sed sc4 Printed 02-13-2016
Exh. 7-23I-18 Revision Date: 2/15/2016
Revision No.: PR -04