2011-06-29_PERMIT FILE - C1981019A ‎(19)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: West Taylor Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part C -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Bottom Left Right Retardance
Freeboard Freeboard Freeboard
Limiting
Velocity
Sideslope Sideslope Slope ( %) Classes
Width (ft)
Depth (ft) % of Depth Mult. x (VxD)
(fps)
Ratio Ratio
20.00%
26.09 cfs
12.00 3.0:1 3.0:1 2.0 D, B
1.00
7.0
Vegetated Channel Results:
Structure #4 (Pond)
Sump
Pond Inputs:
Pond Results:
Initial Pool Elev:
Stability
Class D w/o
Freeboard
Stability
Class D w/
Freeboard
Capacity
Class B w/o
Freeboard
Capacity
Class B w/
Freeboard
Design Discharge:
26.09 cfs
20.00%
26.09 cfs
Depth:
0.65 ft
1.65 ft
1.11 ft
2.11 ft
Top Width:
15.92 ft
21.92 ft
18.68 ft
24.68 ft
Velocity:
2.86 fps
1.53 fps
X- Section Area:
9.13 sq It
17.07 sq ft
Hydraulic Radius:
0.566 ft
0.897 ft
Froude Number:
0.66
0.28
Roughness Coefficient:
0.0503
0.1281
Structure #4 (Pond)
Sump
Pond Inputs:
Pond Results:
Initial Pool Elev:
100.00 ft
Initial Pool:
2.01 ac -ft
*Sediment Storage:
0.00 ac -ft
Dead Space:
20.00%
*No sediment capacity defined
Emeraencv SDillwa
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
100.00 20.00 2.00:1 2.00:1 20.00
Peak Elevation: 100.74 ft
H'graph Detention Time:
0.38 hrs
Pond Model:
CSTRS
Dewater Time:
0.76 days
Trap Efficiency:
35.20
Dewatering time is calculated from peak stage to lowest spillway
18
Filename: WestT Pond1024.sc4 Printed 05 -31 -2010
Exh. 7 -20C -100 Revision Date: 5/31/10
Revision No.: TR -81