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
!`nnvnnh� 4004 I)AIA D-1, I CnhuroY.
9
Structure #9 (Null
Structure #8 (Vegetated Channel)
D1 Upper Ditch
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right
Bottom Retardance
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio Classes
Depth (ft) % of Depth Mult. x (VxD)
Velocity
(fps)
12.00 2.0:1 2.0:1 5.0 D, B
0.65 ft
7.0
Vegetated Channel Results:
Structure #7 (Null
Structure #6 (Pond
Sidehill Pond
Pond Inputs:
Initial Pool Elev: 7,167.00 ft
Initial Pool: 4.02 ac -ft
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
7,172.00 25.00 2.00:1 2.00:1 40.00
Perforated Riser
Riser
Riser Height
Stability Stability
Class D w/o Class D w/
Freeboard Freeboard
Capacity Capacity
Class B w/o Class B w/
Freeboard Freeboard
Design Discharge:
50.24 cfs
50.24 cfs
Depth:
0.65 ft
1.01 ft
Top Width:
14.62 ft
16.02 ft
Velocity:
5.77 fps
3.56 fps
X -Section Area:
8.70 sq ft
14.10 sq ft
Hydraulic Radius:
0.583 ft
0.854 ft
Froude Number:
1.32
0.67
Roughness Coefficient:
0.0402
0.0841
Structure #7 (Null
Structure #6 (Pond
Sidehill Pond
Pond Inputs:
Initial Pool Elev: 7,167.00 ft
Initial Pool: 4.02 ac -ft
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
7,172.00 25.00 2.00:1 2.00:1 40.00
Perforated Riser
Riser
Riser Height
Barrel
Barrel Barrel Slope
Number of
Spillway Elev
Diameter (ft)
Diameter Length (ft) (%)
Manning's n (ft) Holes per
(in)
(in)
Elev
18.00 7.00
18.00 163.00 2.10
0.0240 7,170.00 2
Filename: Rev3 PR04 Westside EOM 10024.sc4 Printed 02-13-2016
Exh. 7-23I-38 Revision Date: 2/15/2016
Revision No.: PR -04