2004-09-02_PERMIT FILE - C1981019A ‎(5)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/2/2004
• Doc Name: Attachment 1 to 9
• Section_Exhibit Name: Exhibit 07 Rail Loop Pond - 006A
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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• Structure #i (Pond)
Pond Inputs:
Structure Detai/;
Initial Pool Elev: 6,351.50
Initial Pool: 0.93 ac-R
*Sediment Storage: 0.10 ac-R
Dead Space: 20.00 %

*Sediment capacity based on Average Annual R of 19.0 for 3 year(s)
Straight Pipe
Barrel Barrel Entrance Tailwater
Barrel Manning's Spillway
Diameter Length Loss Depth
Slope (%) n Elev
(in) (R) Coefficient (R)
8.00 41.00 1.OO 0.0250 6,351.50 0.90 0.00
Emergency Spillway
•
Pond Results:
Spillway Elev Crest Length Left Right Bottom
(R) Sideslope Sideslope Width (R)
6,353.00 IS.00 2.00:1 2.00:1 7.00
Peak Elevation: 6,351.93'
H'graph Detention Time: 3.18 hrs
Pond Model: CSTRS I
Dewater Time: 0.86 days
Trap Efficienty: 94.92 %
Dewatering time is calcu/ated from peak stage to lowest spil/way
,,~~\
~3 Elevation-Capacity-Discharge Table

Elevation Area

(ac) Capacity

(ac-R) Discharge

(~s) Dewater
Time
(hrs)
6,345.86 0.096 0.000 D.000 Top of Sed. Storage
6,346.00 0.100 0.013 0.000
6,346.50 0.111 0.066 0.000
6,347.00 0.123 0.124 0.000
6,347.50 0.133 0.188 0.000
6,348.00 0.145 0.258 0.000

Filename: RailLoop-10yr.scA Printed OS-11-2002