2010-06-01_REVISION - C1981019 ‎(5)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 6/1/2010
• Doc Name: Exhibit 5 2006, 2007, 2008 & 2009 Phase II Vegetation Reports
• From: Colowyo Coal Company
• To: DRMS
• Type & Sequence: SL4
• Email Name: JRS
• Email Name: SB1
• Media Type: D
• Archive: No

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Table P - Annual Precipitation at the Colowyo Mine*, 2001 - 2006
Jan
Feb I
Mar I
Apr
I may
Jun
3111
Aug
Sep
Oct
Nov
Decl
Total
2001
0.53
1
1.15
1.181
1.76
0.68
0.96
0.90
1.01
1.19
1.19
0.68
12.48
2002
2003
0 .86
0.91
0.60
1.17
2.95
1 .12
2.05
0.05
1.57
0.75
0.52
1.69_
0.19
0.77
0.93
2.69
1.03
1.71
0.25
1.54
2.84
0.56
1.47
13.49
17.43
2.73
0.75
0.58
2.86
1.59
0.94
2.42
0.62
3.23
2.31
1.15
0.59
17.68
_
_ 2005
2006
_0.6
1.97
1.19
1.2
1.59
2.01
2.59
1.33
2.01
0.64
4.50
0.25
0.45
1.77
1.19
2.02
1.35
4.83
2.60
4.62
1.54
1.15
0.64
0.63
21.68
21.14
1 0.71
2001 -06 Av
0.99
1.32
1.49
1.96
1.39
1.48
1.14
0.88
1.86
1.61
1.65
0.79
16.55
Chart P
Seasonal Precipitation (September - August)
at the Colowyo Mine', 2001 - 2006
25 - �I
e 20 - 6 year avert aa_e - 17.32"
0
15
0
g 10
u
V
C -
`� 5
0
00101 01/02 02/03 03/04 04/05 05/06 6 -Year
Average
N OGaber r April -. A ]uly�
Se mbar March June
Seasonal Precipitation at the Colowyo Mine -
2005/2006 vs. 6 -Year Average
8
836 Year Avg.
6 02005/2006
w 4.69 8 4.04
4 3.00 3.59
c 4
2
0 6.03 48
Fall Winter Spring Summer
-An average Of Colowyo Weather Stations SCN16 (]an -3u1) and WSTPT (Jan -Dec).
Ceona CSamcASSOnA'ras. me Page 3 Colowyo Coal Co. Phase II Evaluation