PERMFILE47016

• Permit No: C1994082A
• IBM Index Class Name: Permit File
• Doc Date: 6/1/2007
• Doc Name: Post Mining Channels SEDCAD4 Results/Channel YPM-1 to -8
• Section_Exhibit Name: Tab 13 Attachment 13-12 Appendix 13.12.3
• Media Type: D
• Archive: Yes

RIPRAP
TYPICAL L/NED CHANNEL
MiERE REQUIRED

Channel Flow
(p9)
t_ge Bottqm Width
l~f~
(
x) SldeFI Slope
(k) Depth
of Flkgw~~)
(
J
V~e)dtV)
(
Cz
Fre ~k~ard
Tota~ft~epth Liner
V(n/D(3)
)
yp,M_i_1 8.2 5-11 1.
0-
20 d0 0.
6 S.O 0.3 0.9 6.0'
YMP-1-2 9.7 8-13 1.0 3.0 0.6 5.0 0.3 0.9 6.0"

YPM-1-3
71.0 8-f0
23 1.0
1.0 30
30 0.7
0.6 6.0
7.0 0.3
O.J 1.0
0.9 6.0'
9.0"
1PM-2 1.5 70-21 20 .ZO 0.2 4.0 O.J 0.5 4.5"

)PM-3-1
28 10-15
I6 2.0
20 30
JO 0.3
0.3 4.0
4.5 0.3
0.3 0.6
0.6 4.5"
6'
YPM-3-2 8.4 1f-1 20 3.0 0.5 6.0 0.3 0.8 6.0'
TPM-4 1.0 9-17 1.0 20 0.2 30 0.3 0.5 4.5'
YPM-4-1 1.0 16.5 20 30 0.2 3.0 0.3 0.5 4.5'
YPM-5-1 8.3 4-19 20 30 0.5 6.0 0.3 0.8 6.0'
YPM-6-1 12.1 f0-2 500 3.0 0.4 6.0 0.3 0.7 6.0'
YPM-6-2 16.0 6-15 50 30 0.5 6.0 0.3 0.8 6.0"
YPM-6-3 24.0 10 50 JO 0.6 6.5 0.3 0.9 6.0'
YPM-7 83 4-21
pg 20
1.0 30
30 0.5
0.5 6.0
6.5 0.3
0.3 0.8
0.8 6.0"
9.0'
NOTES:
1. Depth of flow based on minimum grade, Capacity Class B.
2. Velocity bused on maximum grade, Stability Class D.
3. Riprop D50 based on PADER Method plus 3".
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TR-30
SENECA COAL COMPANY
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`~ o~ ~a CHANNEL DESIGNS
^%~ 13-123-1
13-12.3-2
Revised 11