2011-06-29_PERMIT FILE - C1981019 ‎(15)‎

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: Attachment 1 to Attachment 12
• Section_Exhibit Name: Exhibit 07 East Taylor Pond 010A
• Media Type: D
• Archive: No

•
SEDCAD 4 for Windows
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Structure #18 (Pond
E Tay /or Sed Pond
Pond Inputs:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Initial Pool Elev: 6,944.00 ft
w/o Freeboard w/ Freeboard
Design Discharge:
39.20 cfs
Depth:
0.34 ft 1.34 ft
Top Width:
14.06 ft 20.06 ft
Velocity*:
18.00 10.00
X- Section Area:
4.47 sq ft
Hydraulic Radius:
0.316 ft
Froude Number *:
Manning's n *:
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: 6,944.00 ft
Initial Pool:
2.86 ac -ft
*Sediment Storage:
0.01 ac -ft
Dead Space:
0.00%
*Sediment capacity based on Average Annual R of 19.0 for 1 year(s)
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
6,953.50 20.00 2.00:1 2.00:1 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 10.00
18.00 122.00 4.00
0.0250 6,951.00 2
Pond Results:
Peak Elevation: 6,952.95 ft
H'graph Detention Time: 6.88 hrs
Pond Model: CSTRS
27
Filename: E Taylor Sed Pond Post Mining Phase 10 24.sc4 Printed 12 -12 -2010
Exh. 7 -ET -65 Revision Date: 12/31/10
Revision No.: TR -81