2016-08-08_PERMIT FILE - C1981019A ‎(63)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 8/8/2016
• Doc Name: Sedimwent Pond and Associated Modeling During Mining
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part C
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
1000 7n1n D-1, I C -k -,-k
Structure #3 (Null)
Structure #2 (Pond )
Section 26 Pond
Pond Inputs:
Velocity and Manning's n calculations may not apply for this method.
Initial Pool Elev:
w/o Freeboard w/ Freeboard
Velocity*:
1.49 ac -ft
X -Section Area:
0.48 sq ft
Hydraulic Radius:
0.039 ft
Froude Number*:
18.00 13.00
Manning's n*:
0.0240 6,993.00 2
Dmin:
2.00 in
D50:
6.00 in
Dmax:
7.50 in
Velocity and Manning's n calculations may not apply for this method.
Initial Pool Elev:
6,991.00 ft
Initial Pool:
1.49 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)
6,995.00 20.00 2.50:1 2.50:1 20.00
Perforated Riser
Riser
Riser Height
Barrel
Barrel Barrel Slope
Number of
Spillway Elev
Diameter (ft)
Diameter Length (ft) (%)
Manning's n (ft) Holes per
(in)
(in)
Elev
18.00 13.00
18.00 235.00 10.50
0.0240 6,993.00 2
Pond Results:
Peak Elevation:
6,993.22 ft
H'graph Detention Time:
3.24 hrs
Pond Model:
CSTRS
Dewater Time:
1.37 days
Trap Efficiency:
58.14%
Dewatering time is calculated from peak stage to lowest spillway
13
Filename: PR04 West Side Ponds 1024 rev2.sc4 Printed 07-30-2015
Exh. 7-23C-27 Revision Date: 07/31/2015
Revision No.: PR -04