2018-01-31_PERMIT FILE - C1981019A ‎(8)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 1/31/2018
• Doc Name: West Taylor Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part C -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
r—,,inh+ 1 QQR -qni n P. -.i. i Ghwah
14
Structure #5 (Pond)
WTD -1 Stock Pond
Pond Inputs:
Pond Results:
Initial Pool Elev:
w/o Freeboard w/ Freeboard
Hydraulic Radius:
0.291 ft
Froude Number:
0.81
Manning's n:
0.0320
Dmin:
1.00 in
D50:
1.50 in
Dmax:
3.00 in
Initial Pool Elev:
100.00 ft
Initial Pool:
2.01 ac -ft
*Sediment Storage:
0.00 ac -ft
Dead Space:
0.00%
*No sediment capacity defined
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
100.00 20.00 2.00:1 2.00:1 20.00
Peak Elevation:
100.67 ft
H'graph Detention Time:
0.59 hrs
Pond Model:
CSTRS
Dewater Time:
0.66 days
Trap Efficiency:
82.76 %
Dewatering time is calculated from peak stage to lowest spillway
Elevation -Capacity -Discharge Table
Filename: TR -117 Post Mining 10 YR 24 HR.sc4 Printed 11-10-2017
Area
Capacity
Discharge Dewater
Elevation
Time
(ac)
(ac -ft)
(cfs) (hrs)
90.00
0.050
0.000
0.000 Top of Sed. Storage
90.01
0.050
0.001
0.000
90.50
0.060
0.027
0.000
91.00
0.072
0.060
0.000
91.50
0.084
0.099
0.000
Filename: TR -117 Post Mining 10 YR 24 HR.sc4 Printed 11-10-2017