2001-12-11_PERMIT FILE - C1996084 ‎(5)‎

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Exhibit 15-22 Mine Area P6 Sediment Control Pond 6-1
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
CoDY~9ht 1998 Pamela J Schwab
Civil Software Design
Spillway Elev Crest Length Left Right Bottom
(ft) sideslope Sideslope Width (ft)
6,740.00 27.50 2.50:1 2.50:1 15.00
Pond Results:
Peak Elevation: 6,741.50
H'graph Detention Time: 1.40 hrs
Pond Model: CSTRs
Dewater Tme: 1.23 days
Trap Efficiency: 82.35
Dewatering time is calculated from peak stage to lowest spillway
Elevation-Capacity-Discharge Table
•

Elevation Area

(ac) Capacity

(ec-ft) Discharge

(~s) Dewater
Time
(hrs)
6,734.36 0.862 0.000 0.000 Top of Sed. Storage
6,734.50 0.864 0.106 0.000
6,735.00 0.872 0.540 0.000
6,735.50 0.881 0.978 0.000
6,736.00 0.890 1.421 0.000
6,736.50 0.898 1.868 0.000
6,737.00 0.907 2.319 0.000
6,737.50 0.916 2.775 0.000
6,738.00 0.924 3.235 0.000
6,738.50 0.933 3.699 0.000
6,739.00 0.942 4.168 O.D00
6,739.50 0.951 4.642 0.000
6,740.00 0.960 5.119 0.000 Spillway #1
6,740.50 0.960 5.599 0.338 17.19•
6,741.00 0.960 6.079 34.895 12.05
6,741.50 0.960 6.559 76.585
6,741.50 0.960 6.562 76.904 0.30 Peak Stage
6,742.00 0.960 7.039 127.427
6,742.50 0.960 7.519 192.960
#Designates time(s) to dewater have been extrapolated beyond the 50 hour hydrvgraph limit.
Detailed Discharge Table
C~
Filename: 26pond6-1 rev.sc4 Printed 07-17-2001