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Table P - Annual Precipitation at the Colowyo Mine *, 2001 - 2009 <br />Jan Feb Mar Apr May I Jun Jul Aug Sep Oct Nov Dec Total <br />2001 0.53 1.27 1.15 1.18 1.76 0.68 0.96 0.90 1.01 1.19 1.19 0.68 12.50 <br />2002 <br />0.86 <br />0.60 <br />1.17 <br />1.12 <br />0.05 <br />0.75 <br />1.69 <br />0.77 <br />2.69 <br />1.71 <br />1.54 <br />0.56 <br />13.51 <br />2003 <br />0.91 <br />2.73 <br />2.95 <br />2.05 <br />1.57 <br />0.52 <br />0.19 <br />0.93 <br />1.03 <br />0.25 <br />2.84 <br />1.47 <br />17.44 <br />2004 <br />0.66 <br />0.75 <br />0.58 <br />2.86 <br />1.59 <br />0.94 <br />2.42 <br />0.62 <br />3.23 <br />2.31 <br />1.15 <br />0.59 <br />17.70 <br />2005 <br />1.97 <br />1.24 <br />1.59 <br />2.59 <br />2.01 <br />4.50 <br />0.45 <br />1.19 <br />1.35 <br />2.60 <br />1.54 <br />0.64 <br />21.67 <br />2006 <br />1.19 <br />0.71 <br />2.01 <br />1.33 <br />0.64 <br />0.25 <br />1.77 <br />2.02 <br />4.83 <br />4.62 <br />1.15 <br />0.63 <br />21.15 <br />2007 <br />1.21 <br />1.50 <br />1.54 <br />0.92 <br />1.67 <br />0.30 <br />1.27 <br />0.84 <br />4.18 <br />2.38 <br />1.60 <br />2.84 <br />20.22 <br />2008 <br />0.35 <br />1.24 <br />1.14 <br />1.94 <br />2.79 <br />1.08 <br />0.17 <br />2.32 <br />1.94 <br />1.16 <br />1.28 <br />1.81 <br />17.19 <br />2009 <br />1.32 <br />0.31 <br />1.99 <br />1.67 <br />1.79 <br />2.42 <br />0.33 <br />0.59 <br />0.85 <br />- <br />- <br />10 <br />11.24 <br />2001 -2009 Avg. <br />1 1.00 <br />1 1.15 <br />1.57 <br />1 1.74 <br />1.54 <br />1 1.27 <br />1.03 <br />1.13 <br />2.35 <br />2.03 <br />1 1.54 <br />1 1.15 <br />17.48 <br />* An average of Colowyo Weather Stations SCN16 and WSTPT. <br />In 2009, the WSTPT station was moved to South Taylor, therefore it was replaced by Meteorological Station. <br />CEDAR CREEK ASSOCIATES, Inc. Page 3 Rio Tinto Energy America - Colowyo Mine <br />2009 Phase III Bond Release Evaluation - Year 2 <br />Chart P <br />Seasonal Precipitation (September - August) at the Colowyo Mine *, 2001- 2009 <br />25 <br />9 year average - 17.67" <br />20 <br />- - <br />e <br />0 <br />- - - - - - - - - - - - - - - - - - - <br />- <br />15 <br />V <br />d <br />10 <br />0 <br />d <br />u <br />5 <br />e <br />0 <br />c o o o <br />o o <br />° 0 0 0 0 0 0 <br />0 0 0 <br />August <br />July <br />a <br />June <br />Seasonal Precipitation at the Colowyo Mine* <br />2007/2008 and 2008/2009 vs. 9 -Year Average <br />12 <br />09 Year Avg. <br />10 <br />02007/2008 <br />8.16 <br />y <br />8 <br />6.09 5.87 <br />❑ 2008/2009 <br />5.44 <br />C <br />6 <br />4.37 4.43 4.85 <br />3.30 3.43 <br />3.43 3.56 <br />3.33 <br />4 <br />2 <br />F <br />IF <br />0 <br />Fall Winter Spring Summer <br />* An average of Colowyo Weather Stations SCN16 and WSTPT. <br />In 2009, the WSTPT station was moved to South Taylor, therefore it was replaced by Meteorological Station. <br />CEDAR CREEK ASSOCIATES, Inc. Page 3 Rio Tinto Energy America - Colowyo Mine <br />2009 Phase III Bond Release Evaluation - Year 2 <br />