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Detection Summary <br />Client: Coors Energy Company <br />TestAmerica Job ID: 280 - 36986 -1 <br />Project/Site: Coors - Keenesburg Mine, <br />CO 80643 <br />Client Sample ID: AMW -2 (Continued) <br />Lab <br />Sample ID: 280 - 36986 -6 <br />Analyte <br />Result <br />Qualifier <br />RL <br />Unit <br />Dil Fac D <br />Method <br />Prep Type <br />Calcium <br />450 <br />0.20 <br />mg /L <br />1 <br />200.7 Rev 4.4 <br />Dissolved <br />Iron <br />0.17 <br />0.10 <br />mg /L <br />1 <br />200.7 Rev 4.4 <br />Dissolved <br />Magnesium <br />180 <br />0.20 <br />mg /L <br />1 <br />200.7 Rev 4.4 <br />Dissolved <br />Manganese <br />0.50 <br />0.010 <br />mg /L <br />1 <br />200.7 Rev 4.4 <br />Dissolved <br />Sodium <br />1600 <br />50 <br />mg /L <br />10 <br />200.7 Rev 4.4 <br />Dissolved <br />Sodium Adsorption Ratio <br />17 <br />0.40 <br />No Unit <br />1 <br />20B <br />Total /NA <br />Sodium <br />1700000 <br />1000 <br />ug /L <br />1 <br />20B <br />Total /NA <br />Calcium <br />490000 <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 />390 <br />30 <br />mg /L <br />10 <br />300.0 <br />Total /NA <br />Sulfate <br />3900 <br />500 <br />mg /L <br />100 <br />300.0 <br />Total /NA <br />Alkalinity <br />740 <br />B <br />5.0 <br />mg /L <br />1 <br />SM 2320B <br />Total /NA <br />Bicarbonate Alkalinity as CaCO3 <br />740 <br />B <br />5.0 <br />mg /L <br />1 <br />SM 2320B <br />Total /NA <br />Specific Conductance <br />7800 <br />2.0 <br />umhos /cm <br />1 <br />SM 2510B <br />Total /NA <br />Total Dissolved Solids <br />6800 <br />40 <br />mg /L <br />1 <br />SM 2540C <br />Total /NA <br />pH adj. to 25 deg C <br />7.56 <br />HF <br />0.100 <br />SU <br />1 <br />SM 4500 H+ B <br />Total /NA <br />TestAmerica Denver <br />Page 9 of 34 1/11/2013 <br />