2014-07-03_PERMIT FILE - C1981020 ‎(4)‎

• Permit No: C1981020
• IBM Index Class Name: Permit File
• Doc Date: 7/3/2014
• Section_Exhibit Name: Appendix M‎(vii)‎ to M‎(viii)‎ Hydrologic Data
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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•
Structure #1 (Check Dam]
Check Dam Inputs:
Structure #2 jSilt Fence,
Height (ft) Porosity (%) Slope (%) Manning's n Sideslopes
(Z:1)
3.0 50.00 2.00 0.0400 1.0
Check Dam Results:
Silt Fence Inputs:
Structure Detai/;
Trap Efficiency: 19.55
Fence Flow Width along land'Slope Tie-back
Rate contour (ft} Height (ft) (%) distance (ft)
(gpmisq ft)
10.0 40.0 2.5 2.00 125.0
•
Silt Fence Results:
*Sediment Storage: 0.00 ac R
*No sediment capacity defined
Peak Fence Stage: 0.61 ft
Peak Water Stage: 0.61 ft
Dewater Time: 0.50 days
Trap Efficiency: 53.04
Dewatering Ume is calculated from peak stage to lowest spi//way
Stage-Capacity-Discharge Table
•
Fence Stage

(ft) Water Stage

(ft) Area

{ac) Capacity

{ac-ft) Discharge

{cfs) Dewater
Tme
(hrs)
0.00 0.00 0.000 0.000 0.000 Top of Sediment
0.10 0.10 0.005 0.000 0.100 10.35
0.20 0.20 0.009 0.001 0.223 1.10
0.30 0.30 0.014 0.002 0.368 0.30
0.40 0.40 0.018 0.004 0.535 0.10
0.50 0.50 0.023 0.006 0.724 0.10
0.60 0.60 0.028 0.008 0.936
0.61 0.61 0.028 0.008 0.954 0.00 Peak Stage
0.70 0.70 0.032 0.011 1.170
Filename: MunPortal•1.sc4
MU
M(viii)-1 vii
Printed 10-14-2002
10/02