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Detection Summary <br />Client: Coors Energy Company <br />Project/Site: Keenesburg Mine, CO <br />Client Sample ID: SMW -2 (Continued) <br />TestAmerica Job ID: 280 - 26708 -1 <br />Lab Sample ID: 280 - 26708 -6 <br />Analyte <br />Result Qualifier <br />RL <br />Unit <br />Dil Fac D <br />Method <br />Prep Type <br />Magnesium <br />180 <br />0.20 <br />mg /L <br />1 <br />200.7 Rev 4.4 <br />Dissolved <br />Manganese <br />0.63 <br />0.010 <br />mg /L <br />1 <br />200.7 Rev 4.4 <br />Dissolved <br />Sodium <br />1700 <br />5.0 <br />mg /L <br />1 <br />200.7 Rev 4.4 <br />Dissolved <br />Sodium Adsorption Ratio <br />16 <br />0.40 <br />No Unit <br />1 <br />20B <br />Total /NA <br />Sodium <br />1600000 <br />1000 <br />ug /L <br />1 <br />20B <br />Total /NA <br />Calcium <br />440000 <br />200 <br />ug /L <br />1 <br />20B <br />Total /NA <br />Magnesium <br />180000 <br />200 <br />ug /L <br />1 <br />20B <br />Total /NA <br />Hardness as calcium carbonate <br />1900 <br />1.3 <br />mg /L <br />1 <br />SM 2340B <br />Dissolved <br />Chloride <br />750 <br />60 <br />mg /L <br />20 <br />300.0 <br />Total /NA <br />Sulfate <br />3600 <br />500 <br />mg /L <br />100 <br />300.0 <br />Total /NA <br />Alkalinity <br />1000 <br />5.0 <br />mg /L <br />1 <br />SM 2320B <br />Total /NA <br />Bicarbonate Alkalinity as CaCO3 <br />1000 <br />5.0 <br />mg /L <br />1 <br />SM 2320B <br />Total /NA <br />Specific Conductance <br />9100 <br />2.0 <br />umhos /cm <br />1 <br />SM 2510B <br />Total /NA <br />Total Dissolved Solids <br />6300 <br />100 <br />mg /L <br />1 <br />SM 2540C <br />Total /NA <br />pH adj. to 25 deg C <br />6.94 HF <br />0.100 <br />SU <br />1 <br />SM 4500 H+ B <br />Total /NA <br />TestAmerica Denver <br />Page 8 of 31 3/27/2012 <br />