2001-12-11_PERMIT FILE - C1996084 ‎(2)‎

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 15-25 MINE AREA P7 SEDIMENT CONTROL POND 7-3
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
Copyright 1998 Pamela J. Schwab
Civil Sothware Design
u
Bottom LeR Right Freeboard Freeboard Freeboard
( )) Sideslope Sideslope Slope (%)
Width R Ratio Ratio Mult. x
Depth (R) %of Depth
(VxD)
2.00 3.0:1 3.0:1 8.5 0.30
Riprap Channel Results:
PADER Method -Steep Slope Design
w/o Freebo reeboard
Design Discharge: 96.66 cfs
Depth: 1.58 R 1.88 R
Top Width: 11.46 R 13.26 R
Velocity: 9.11 fps
X-Section Area: 10.61 sq R
Hydraulic Radius: 0.886
Froude Number: 1.67
Manning's n: 0.0990
Dmin: 5.00 in
DSO: 9.00 in
Dmax: 12.00 in
• Structure #5 (Pond1
Pond Inputs:
Initial Pool Elev: 6,649.50
Initial Pool: 1.21 ac-R
'Sediment Storage: 4.33 ac-R
Dead Space: 20.00
*sediment capacity based on Average Annual R of 70.0 for 2 year(s)
Perforated Riser
Riser Riser Height Barrel Barrel Barrel Slope Number of
'
Diameter (R) Diameter Length (R) (%) Manning
s n Spillway Elev Holes per
(in) (in) Elev
12.00 6.00 8.00 80.00 3.00 0.0240 6,696.00 4
Emergency SDillway
Spillway Elev Crest Length LeR Right Bottom
(R) Sideslope Sideslope Width (R)
6,650.00 10.00 2.50:1 2.50:1 2.00
• Pond Results:
Filename: 100pond7-3.sc4 Printed 04-24-2001