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 1998 Pamela J. Schwab
Civil Software Design
Silt Fence Inputs:
Structure Detai/;
Fence Flow y,~idth along Land Slope Tie-back
Rate contour (ft) Height (ft) (%) distance (ft)
(gpm/sq ft)
10.0 16.0 2.5 5.70 43.9
*SedimentStorage: 0.00 ac-ft
Silt Fence Results:
*No sediment capacity defined
Peak Fence Stage: 0.56 ft
Peak Water Stage; 0.56 ft
Dewater Time: 0.29 days
Trap Efficiency: 86.12
Dewatering time is ca/culated from peak stage to lowest spi/lway
Stage-Ca city-Discharge Table
Fence Stage

(ft) Water Stage

(ft) Area

(ac) Capacity

(arft} Discharge

(cfs) Dewater
Time
(hrs)
0.00 0.00 0.000 0.000 0.000 Top of Sediment
0.10 0.10 0.001 0.000 0.040 6.00
0.20 0.20 0.001 0.000 0.087 0.90
0.30 0.30 0.002 0.000 0.142 0.05
0.40 0.40 0.003 0.001 0.205
0.50 0.50 0.003 0.001 0.276
0.56 0.56 0.004 0.001 ~ 0.321 0.01 Peak Stage
0.60 0.60 0.004 0.001 0.355
0.70 0.70 0.005 0.002 0.441
0.80 0.80 0.005 0.002 0.535
0.90 0.90 0.006 0.003 0.637
1.00 1.00 0.006 0.003 0.747
1.10 1.10 0.007 0.004 0.865
1.20 1.20 0.008 0.005 0.991
1.30 1.30 0.008 0.005 1.124
1.40 1.40 0.009 0.006 1.265
1.50 1.50 0.010 D.OD7 1.414
1.60 1.60 0.010 0.008 1.571
1.70 1.70 0.011 0.009 1.736

i~
L.J
Filename: LodeOttice.sc4
Printed 07-21-2002
TR-11 M-4iv 1 /02