PERMFILE133709

• Permit No: C1980005A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: POST-MINING DRAINAGE CONTROL
• Section_Exhibit Name: TAB 7 APPENDIX 7-12
• Media Type: D
• Archive: Yes

S2~
Protect Name: Seneca II
Pmleet Number: 882-1000
Prepared By: JPB
Date Prepared: 01 May 1998
File: J:1882~DS152SUMM.XLS
Channel Deslgn Flow, Q Slope Botfom l~dfh (BWJ S/de Slopes Depth of Flow (D) Veloelty Freeboard Total Depth Rlprap DSO
(owl (°~J (h1 (H:1VJ (hl (tpsJ (hl fly M)
(7) (2) and (3J (4) (5)
J
r
N
.P
J
z
m
C
W
N
(D
a
0
u,
0
m
S2 PM-3
7-20
0.7 1.38 0.3
Notes:
1) Channel designed for eldsfing worst case, vegetated, V-shaped conditions.
2) Channel was designed to safely convey runoff resulting from the 70 year, 24 hour storm event.
3) Design Oow rounded to nearest whole cfs from SEDCAD hydrologic analysis.
4) Depth of Oow based on minimum grade.
5) Veloc'Ity based on maximum grade.
Page 4
NA