2011-03-25_PERMIT FILE - C1981019A ‎(8)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 3/25/2011
• Doc Name: East Pit Recl Sequencing & Ditch Designs for Prospect Ditch, N Tribut E Pit Ditch & Final E Pit Ditc
• Section_Exhibit Name: Exhibit 07 Item 14 Appendix Exh7-14R
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
19
Elevation
(ft)
Emergency
Spillway (cfs)
Combined
Total
Discharge
(cfs)
103.50
1,840.252
1,840.252
104.00
2,080.924
2,080.924
104.50
2,337.429
2,337.429
105.00
2,610.031
2,610.031
Structure #32 (Rirap Channel)
Channel
Trapezoidal Riprap Channel Inputs:
Material: Riprao
Bottom Left Right
Freeboard Freeboard Freeboard
°
Sideslope Sideslope Slope ( / °)
Width (ft)
Mult. x
Depth (ft) % of Depth
Ratio Ratio
(VxD)
12.00 2.01 2.0:1 19.9
1.00
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #33 (Null)
Null end of mine disturbance
Structure #34 (Nonerodible Channel)
Uppermost natural channel in Prospect
Triangular Nonerodible Channel Inputs:
Filename: ProspectR2 1024 Postmining2010.sc4 Printed 10 -27 -2010
Each. 7- 14R -31 Revision Date: 10/29/10
Revision No.: TR -87
w/o Freeboard w/ Freeboard
Design Discharge:
2.73 cfs
Depth:
0.03 ft 1.03 ft
Top Width:
12.11 ft 16.11 ft
Velocity *:
X- Section Area:
0.35 sq ft
Hydraulic Radius:
0.028 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.
Structure #33 (Null)
Null end of mine disturbance
Structure #34 (Nonerodible Channel)
Uppermost natural channel in Prospect
Triangular Nonerodible Channel Inputs:
Filename: ProspectR2 1024 Postmining2010.sc4 Printed 10 -27 -2010
Each. 7- 14R -31 Revision Date: 10/29/10
Revision No.: TR -87