2010-12-08_PERMIT FILE - C1981008A ‎(2)‎

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/8/2010
• Doc Name: Pond 011 Engineering and Hydrologic Design
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-22
• Media Type: D
• Archive: Yes

• SEDCAD 4 for Windows
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Structure #I ( I/egetated Channel)
Mined Land Disturbed (poor)
Trapezoidal Vegetated Channel Inputs:
Material: Grass mixture
Left Right Freeboard Freeboard Freeboard Limiting
Bottom Retardance
Sideslope Sideslope Slope ( %) Mult. x Velocity
Width (ft) Ratio Ratio Classes Depth (ft) % of Depth
(VxD) (fps)
20.00 10.0:1 10.0:1 4.1 D, B 1.00 10.00 5.(
• 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:
31.11 cfs
31.11 cfs
Depth:
0.46 ft
1.46 ft
0.82 ft
1.82 ft
Top Width:
29.12 ft
49.12 ft
36.34 ft
56.34 ft
Velocity:
2.78 fps
1.35 fps
X- Section Area:
11.20 sq ft
23.01 sq ft
Hydraulic Radius:
0.384 ft
0.632 ft
Froude Number:
0.79
__
0.30
Roughness Coefficient:
0.0572
0.1642
Structure #I ( I/egetated Channel)
Mined Land Disturbed (poor)
Trapezoidal Vegetated Channel Inputs:
Material: Grass mixture
Left Right Freeboard Freeboard Freeboard Limiting
Bottom Retardance
Sideslope Sideslope Slope ( %) Mult. x Velocity
Width (ft) Ratio Ratio Classes Depth (ft) % of Depth
(VxD) (fps)
20.00 10.0:1 10.0:1 4.1 D, B 1.00 10.00 5.(
• Vegetated Channel Results:
Structure #5 LP
ond
pond
Pond Inputs:
Initial Pool Elev: 5,611.90 ft
Initial Pool: 4.99 ac-ft
*Sediment Storage: 0.00 ac -ft
Filename: 011POND 25YR post mine 1day pump 15sept09.sc4 Printed 09 -16 -2009
• Revised February 2010 (PR06) Attachment 2.05.3(3) -22 -30
Stability
Stability
Capacity
Capacity
Class D w/o
Class D w/
Class B w/o
Class B w/
_
Freeboard
Freeboard
Freeboard
Freeboard
Design Discharge:
18.99 cfs
18.99 cfs
Depth:
0.37 ft
1.37 ft
0.71 ft
1.71 ft
Top Width:
27.42 ft
47.42 ft
34.14 ft
54.14 ft
Velocity:
2.16 fps
0.99 fps
X- Section Area:
8.80 sq ft
19.14 sq ft
Hydraulic Radius:
0.320 ft
0.559 ft
Froude Number:
........
0.67
_ .......___..
__
........ 0.23
Roughness Coefficient:
0.0653
0.2061
Structure #5 LP
ond
pond
Pond Inputs:
Initial Pool Elev: 5,611.90 ft
Initial Pool: 4.99 ac-ft
*Sediment Storage: 0.00 ac -ft
Filename: 011POND 25YR post mine 1day pump 15sept09.sc4 Printed 09 -16 -2009
• Revised February 2010 (PR06) Attachment 2.05.3(3) -22 -30