2017-03-20_PERMIT FILE - C1981019

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 3/20/2017
• Doc Name: Sediment Control System for the Temporary Facilities Pond
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part K
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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Structure #2 (Pond )
Laydown Pond
Pond Inputs:
Pond Results:
Initial Pool Elev:
Stability Stability
Class D w/o Class D w/
Freeboard Freeboard
Capacity Capacity
Class B w/o Class B w/
Freeboard Freeboard
Design Discharge:
4.88 ds
4.88 cfs
Depth:
1.03 ft
1.60 ft
Top Width:
4.12 ft
6.39 ft
Velocity:
2.30 fps
0.96 fps
X -Section Area:
2.13 sq ft
5.11 sq ft
Hydraulic Radius:
0.461 ft
0.715 ft
Froude Number:
0.56
0.19
Roughness Coefficient:
0.0573
0.1847
Structure #2 (Pond )
Laydown Pond
Pond Inputs:
Pond Results:
Initial Pool Elev:
6,404.05 ft
Initial Pool:
0.87 ac -ft
*Sediment Storage:
0.00 ac -ft
Dead Space:
20.00
*No sediment capacity defined
Emergency Spillwax
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,408.00 20.00 3.00:1 3.00:1 12.00
Peak Elevation:
6,408.01 ft
H'graph Detention Time:
9.26 hrs
Pond Model:
CSTRS
Dewater Time:
0.11 days
Trap Efficiency:
100.00%
Dewatering time is calculated from peak stage to lowest spillway
Elevation -Capacity -Discharge Table
El
Filename: TempFacilities 1024.sc4 Printed 01-03-2017
Revision No.: TR -108 Exh. 7-23K-12 Revision Date: 1/03/2017