2013-05-03_PERMIT FILE - C2010089A

• Permit No: C2010089A
• IBM Index Class Name: Permit File
• Doc Date: 5/3/2013
• Doc Name: Pond NHN-001 As-Built
• Section_Exhibit Name: Appendix 2.05.3‎(4)‎-6
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
r'—,H h+ 1 ooA -,)nn7 P —Tc I Crh, —F,
Structure #1 (Null)
simulate 2cfs pit pump
Structure #2 (Pond)
pond 001
Pond Inputs:
Structure Detail;
Initial Pool Elev:
5,671.50 ft
Initial Pool:
2.69 ac -ft
*Sediment Storage:
3.11 ac -ft
Dead Space:
20.00%
*Sediment capacity based on A verage Annual R of 20.0 for 2 year(s)
Perforated Riser
Riser
Riser Height
Diameter
Barrel
Barrel Barrel Slope
Diameter
Number of
Spillway Elev
Manning's n Holes per
(ft)
(in)
Len�%0)
Length (ft) (
(in)
(ft)
Elev
18.00 4.75
24.00 173.00 2.70
0.0240 5,675.50 2
Drop Inlet
Riser Riser Height
Barrel Barrel Barrel Slope
Spillway Elev
Diameter (ft)
Diameter Length (ft) (%)
Manning's n (ft)
(in)
(in)
Trap Efficiency:
72.00 6.75
24.00 106.40 5.60
0.0240 5,677.50
Pond Results:
Peak Elevation:
5,675.75 ft
H'graph Detention Time:
14.04 hrs
Pond Model:
CSTRS
Dewater Time:
1.73 days
Trap Efficiency:
73.31%
Dewatering time is calculated from peak stage to lowest spillway
Elevation - Capacity - Discharge Table
Filename: NHN POND 001 04 -01 -2013 10yr -24hr drop inlet 5679.5EL & drop inlet emergency weephole open dga.sc4 Printed 04 -02 -2013