2010-12-27_REVISION - C1981019 ‎(4)‎

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 12/27/2010
• Doc Name: Updated Dec 10 2008 Phase II Bond Release Evaluation
• From: Colowyo/Cedar Creek
• To: DRMS
• Type & Sequence: SL4
• Email Name: JRS
• Email Name: SB1
• Media Type: D
• Archive: No

An average of Colowyo Weather Stabons SO 16 and WSTPT.
CF.04R CREEK ASSOCIATES. Inc. Page Colowyo Coal Company
2008 Phase R E.I.M. (Updated Dec -10)
Table P - Annual Precipitation at the Colowyo Mine * 2001 - 2008
]an Feb
Mar Apr May Jun
Jul Aug Sep Oct Nov
Dec
Total
2001
0.53 1.22
1.15 1.18 1.76 0.68 0.96 0 90 1.01 1.19 1,19
0.68
12.50
2002
0.86 0.60
1.17 1.12 0.05 DJS 1.69 0 7 2.69 1.71 1.54 _
0.56
13.53
17.44
2003
0.91 273
295 2.05 157 032 019 0.93 103 1 0.25 284 _
1.47
17.70
2004
0.66 075
0.58 2.86 1159 0.94 2 42 0.62 3.23 231 1.15
0.59
21.67
2005
1.97 1.24 1.59 2.59 2.01 4.50 045 1.19 1.35 2.60 1.54
0.64
1
2006
_1.19 0.)1
2.01 1.33 0.64 0.25 177 2.02 4.83 4.62 115
0.63
_21.15
2007
1.21 1.50
1.54 0.92 16) 0.30 1.27 084 4.18 238 1.60
2.84
20.22
2008
0.35 1.24
1.14 1.94 279 108 0.17 2.32 1.94 1.16 1.28
1.81
17.19
2001-2008 Avg.
1.05 1.26
1.57 1.72 1.33 1.13 1.25 1.04 2.62 2.15 1.57
1.06
17.74
Chart P
Seasonal Precipitation (September - August) at the Colowyo Mine-, 2001- 2008
25
22.01"
20
8 Year average - 17.82"
c
0
9
15
V
u`
10
-
-
`o
5
0
x c
August
July
® ©
b
June
Seasonal Precipitation at the Colowyo Mine*
2007/2008v.. 8-Yaar Average
12
10
08Year
An.
8.16
02007/2008
8
636
5.87
6
C431 4.77
3.27 3.44
3.56
4
2
77F] F
0
Fall
Winter Spring Summer
An average of Colowyo Weather Stabons SO 16 and WSTPT.
CF.04R CREEK ASSOCIATES. Inc. Page Colowyo Coal Company
2008 Phase R E.I.M. (Updated Dec -10)