2020-07-14_PERMIT FILE - C1981008

• Permit No: C1981008
• IBM Index Class Name: Permit File
• Doc Date: 7/14/2020
• Doc Name: Pond 013 Postmining SEDCAD Modeling
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-32
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
8
Initial Pool Elev: 90.01 ft
Initial Pool: 0.00 ac-ft
*Sediment Storage: 0.00 ac-ft
Dead Space: 0.00%
*No sediment capacity defined
Pond Results:
Peak Elevation: 95.21 ft
H'graph Detention Time: 4.69 hrs
Pond Model: CSTRS
Dewater Time: 0.04 days
Trap Efficiency: 68.87 %
Dewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
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 0.051 0.001 0.000
90.50 0.077 0.032 2.228
91.00 0.110 0.078 2.228
91.50 0.147 0.142 2.228
92.00 0.190 0.226 2.228
92.50 0.224 0.330 2.228
93.00 0.260 0.450 2.228
93.50 0.303 0.591 2.228
94.00 0.350 0.754 2.228
94.50 0.394 0.940 2.228
95.00 0.440 1.148 2.228
95.21 0.461 1.243 2.228
95.21 0.461 1.245 2.228 1.05 Peak Stage
95.50 0.489 1.381 2.228
96.00 0.540 1.638 2.228
96.50 0.594 1.921 2.228
97.00 0.650 2.232 2.228
97.50 0.704 2.571 2.228
98.00 0.760 2.937 2.228
98.50 0.819 3.331 2.228
99.00 0.880 3.756 2.228
99.50 0.949 4.213 2.228
100.00 1.020 4.705 2.228
100.50 1.127 5.242 2.228
Filename: Pond 013 10 Yr-24 Hr Event.sc4 Printed 07-09-2020