2015-09-15_PERMIT FILE - C2010089A

• Permit No: C2010089A
• IBM Index Class Name: Permit File
• Doc Date: 9/15/2015
• Doc Name: Pond NHN-002 As-Built
• Section_Exhibit Name: Appendix 2.05.3‎(4)‎-10
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure Detail;
Structure #1(Culvert�
Pit Pumping
Culvert Inputs:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
1,000.00 2.00 0.0140 1.00 0.00 0.90
Culvert Results:
Design Discharge = 2.00 cfs
Minimum pipe diameter: 1 - 12 inch pipe(s) required
Structure #2 (Pond
Pond NHN-002
Pond Inputs:
Initial Pool Elev: 5,681.90 ft
Initial Pool: 12.61 ac -ft
*Sediment Storage: 2.05 ac -ft
Dead Space: 0.00
*Sediment capacity based on A verage Annual R of 20.0 for 3 year(s)
Perforated Riser
Riser
Riser Height
Barrel
Barrel Barrel Slope
Number of
Spillway Elev
Diameter (ft)
Diameter Length (ft) (%)
Manning's n (ft) Holes per
(in)
(in)
Elev
18.00 3.90
18.00 40.00 1.00
0.0150 5,681.90 2
Pond Results:
Emeraencv Snillwa
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
5,683.00 30.00 3.60:1 3.20:1 8.10
Peak Elevation:
5,683.83 ft
H'graph Detention Time:
3.02 hrs
Pond Model:
CSTRS
Dewater Time:
0.95 days
Trap Efficiency:
85.39%
[:1
Filename: Pond NHN-002 25YR EVENT PRINCIPAL SPILLWAY CLOSED 07-JUL-15.sc4 Printed 07-07-2015
Appendix 2.05.3(4)-10 Page 21 July 2015 (TR -10)