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
!`nn,.nn ht 1000 IMIn D-1, 1 C,hn—h
Bottom Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
20.00 3.0:1 3.0:1 5.5
0.60 ft
Riprap Channel Results:
PADER Method - Steep Slope Design
Structure #28 (Null
Null at 68, jct with Deer Draw
Structure #29 fflorap Channel)
Little Collom
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
72.21 cfs
Depth:
0.60 ft
Top Width:
23.58 ft
Velocity:
5.56 fps
X -Section Area:
12.99 sq ft
Hydraulic Radius:
0.546 ft
Froude Number:
1.32
Manning's n:
0.0420
Dmin:
2.00 in
D50:
3.00 in
Dmax:
4.50 in
Structure #28 (Null
Null at 68, jct with Deer Draw
Structure #29 fflorap Channel)
Little Collom
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)
20.00 3.0:1 3.0:1 5.5
0.91 ft
Riprap Channel Results:
PADER Method - Steep Slope Design
27
Filename: Rev 3 PR04 East Side Ponds sed EOM 1024.sc4 Printed 02-13-2016
Exh. 7-23I-71 Revision Date: 2/15/2016
Revision No.: PR -04
w/o Freeboard w/ Freeboard
Design Discharge:
134.83 cfs
Depth:
0.91 ft
Top Width:
25.44 ft
Velocity:
6.55 fps
X -Section Area:
20.59 sq ft
Hydraulic Radius:
0.800 ft
Froude Number:
1.28
27
Filename: Rev 3 PR04 East Side Ponds sed EOM 1024.sc4 Printed 02-13-2016
Exh. 7-23I-71 Revision Date: 2/15/2016
Revision No.: PR -04