2016-09-19_PERMIT FILE - C1996084 ‎(3)‎

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 9/19/2016
• Section_Exhibit Name: Exhibit 15-9b Fill 7 Sediment Control Pond 007a
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
Copyright 1998 Pamela J. Schwab
Civil Software Design
Structure ,:X14 ffondl
• area east of pond + area west of pond
Pond Inputs:
Initial Pool Elev:
61910.50
Initial Pool:
0.14 ac -ft
*Sediment Storage:
2.90 ac -ft
Dead Space:
20.00%
*Sediment capacity was entered by user
Perforated Riser
Riser
Riser Height
Barrel
Barrel Barrel Slope
l el S
Pond Model:
Number of
Diameter
(ft)
Diameter
Length
g
Manning's n Spillway Elev
Holes per
(in)
0.000
(in)
6,911.00
0.604
Elev
12.00
13.00
12.00
80.00 6.001
0.0240 6,917.00
5
• Pond Results:
0
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,918.00 14.00 2.50:1 1.00:1 10.00
Peak Elevation:
6,918.60
H'graph Detention Time:
9.83 hrs
Pond Model:
CSfRS
Dewater Time:
3.05 days
Trap Efficiency:
87.23%
Dewatering time is calculated from peak stage to lowest spillway
Elevation -Capacity -Discharge Table
Elevation
Area
(ac)
Capacity
(ac -ft)
Discharge
(cfs)
Dewater
Time
(hrs)
6,910.27
0.592
0.000
0.000
Top of Sed. Storage
6,910.50
0.596
0.139
0.000
Low hole SPW N1
6,911.00
0.604
0.439
0.209
17.37•
6,911.50
0.612
0.743
0.295
12.45*
6,912.00
0.620
1.051
0.571
6.53*
6,912.50
0.629
1.363
0.713
5.30*
6,913.00
0.637
1.680
1.038
4.45
6,913.50
0.646
2.000
1.225
3.40
12
Filename: Rev25PondD07b.sc4 Printed 01-10-2002