PERMFILE40722

• Permit No: C1980004A
• IBM Index Class Name: Permit File
• Doc Date: 10/24/2005
• Section_Exhibit Name: Appendix M Hydrologic Calculations
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
Copyright 7998 Pamela J. Schwab
B
Civil Software Design
•
Structure # ~ (Sil F nc~ Structure Detai/:
Silt Fence Inputs:
Fen[e Flow Width along Land Sfope Tie-back
Rate contour (R) Height (R) (%) distance (R)
(gpmJsq R)
10.0 16.0 2.5 6.60 36.8
*Sediment Storage: 0.00 ac-ft
*No sediment capacity defined
Silt Fence Results :
- Peak Fence Stage: 0.35 ft
Peak Water Stage: 0.35 ft
Dewater Time: 0.12 days
Trap Efficiency: 65.96
Dewatering time is ca/cu/ated from peak stage to lowest spi//way
Stake-Ca aci -Discharge Table .
Fence Spge Water Stage Area Capacity Discharge Dewater
Time
(R) (R) (ac) (ac-ft) (cfs) (ham)
0.00 0.00 0.000 0.000 0.000 Top of Sediment
0.10 0.10 0.001 0.000 0.039 2.50
0.20 0.20 0.001 0.000 0.084 0.45
0.30 0.30 0.002 0.000 0.136
0.35 0.35 0.002 0.000 0.165 0.01 Peak Spge
0.40 0.40 0.002 0.000 0.195
0.50 0.50 0.003 0.001 0.260
0.60 0.60 0.003 0.001 0.332
0.70 0.70 0.004 0.001 0.410
0.60 0.80 0.004 0.002 0.495
0.90 0.90 0.005 0.002 0.586
1.00 1.00 0.005 0.003 0.684
1.10 1.10 0.006 0.003 0.789
1.20 1.20 0.006 0.004 0:400
1.30 1.30 0.007 0.005 1.017
1.40 1.40 0.008 0.005 1.141
1.50 1.50 0.008 0.006 1.272

1.60
1.60
0.009 0.007 1.409 .
1.70 1.70 0.009 0,008 1.553

Filename: LodeTopsoil.sc4 Printed 07.27-2002
TR-11 M-4xx 1/02