2002-07-05_PERMIT FILE - C1996084A ‎(3)‎

• Permit No: C1996084A
• IBM Index Class Name: Permit File
• Doc Date: 7/5/2002
• Section_Exhibit Name: Exhibit 15-9b Fill 7 Sediment Control Pond 007a
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
Copyright 1998 Pamela J. SChwah
Civil Software Design
12
Structure ,:X14 Pond)
• area east of pond + area west of pond
Pond Inputs:
Initial Pool Elev: 6,910.50
Initial Pool: 0.14 ac-k
*Sediment Storage: 2.90 ac-k
Dead Space: 20.00
*Sediment capacity was entered by user
Perforated Riser
Riser Riser Height Barrel Barrel Barrel Slope
' Number of
Diameter (k) Diameter Length (ft) (%) Manning
s n Spillway Elev Holes per
(in) (in) Elev
12.00 13.00 12.00 80.00 6.00 0.0240 6,917.00 5
Emergency Spillway
Spillway Elev Crest Length LeR Right Bottom
(k) Sideslope Sideslope Width (ft)
6,918.00 14.00 2.50:1 1.00:1 10.00
• Pond Results:
Peak Elevation: 6,918.60
H'graph Detention Time: 9.83 hrs
Pand Model: CSTRS
Dewater Time: 3.05 days
Trap Efficiency: 87.23
Dewafering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table

Elevation Area

(ac) Capacity

(ac-k) Discharge

(~s) 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 6.30"
6,913.00 0.637 1.680 1.038 4.45
6,913.50 0.646 2.000 1.225 3.40
Filename: Rev26Pond007b.sc4 Printed 01-10-2002