2020-07-14_PERMIT FILE - C1981008

• Permit No: C1981008
• IBM Index Class Name: Permit File
• Doc Date: 7/14/2020
• Doc Name: Pond 013 Postmining SEDCAD Modeling
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-32
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
7
Structure Detail;
Ditch C-9
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Bottom
Left Right Retardance Freeboard Freeboard Freeboard Limiting
Width (ft) Sideslope Sideslope Slope(%) Classes o Mult. x Velocity
Ratio Ratio Depth(ft) /o of Depth (VxD) (fps)
3.00 2.0:1 2.0:1 3.2 D, B 0.30 7.0
Vegetated Channel Results:
Stability Stability Capacity Capacity
Class D w/o Class D w/ Class B w/o Class B w/
Freeboard Freeboard Freeboard Freeboard
Design Discharge: 4.65 cfs 4.65 cfs
Depth: 0.50 ft 0.80 ft 0.93 ft 1.23 ft
Top Width: 5.00 ft 6.20 ft 6.71 ft 7.91 ft
Velocity: 2.32 fps 1.03 fps
X-Section Area: 2.00 sq ft 4.51 sq ft
Hydraulic Radius: 0.383 ft 0.630 ft
Froude Number: 0.65 0.22
Roughness 0.0605 0.1896
Coefficient:
Culvert C177 at Sta 0+25 in C-9 Ditch
Culvert Inputs:
Max. Tailwater Entrance
Length (ft) Slope(%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
20.00 2.50 0.0140 1.50 1.00 0.90
Culvert Results:
Design Discharge = 4.65 cfs
Minimum pipe diameter: 1 - 15 inch pipe(s) required
Continou5 flow 1000 gpm
Pond Inputs:
Filename: Pond 013 10 Yr-24 Hr Event.sc4 Printed 07-09-2020