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Client Sample Results <br />Client: Coors Energy Company <br />Project/Site: Keenesburg Mine, CO <br />TestAmerica Job ID: 280 - 33543 -1 <br />Client Sample ID: DH -122 Lab Sample ID: 280 - 33543 -4 <br />Date Collected: 09/20112 09:00 Matrix: Water <br />Date Received: 09120/12 15:37 <br />Method: 200.7 Rev 4.4 - Metals (ICP) - Dissolved <br />Analyte <br />Result Qualifier <br />Arsenic <br />ND <br />Barium <br />0.024 <br />Calcium <br />220 <br />Cadmium <br />ND <br />Iron <br />ND <br />Magnesium <br />73 <br />Manganese <br />0.33 <br />Molybdenum <br />ND <br />Sodium <br />300 <br />Lead <br />ND <br />Selenium <br />ND <br />Method: 20B - Sodium Adsorption Ratio <br />Analyte <br />Result Qualifier <br />Sodium Adsorption Ratio <br />4.4 <br />Sodium <br />290000 <br />Calcium <br />200000 <br />Magnesium <br />78000 <br />Method: SM 2340B - Hardness, Calculation <br />- Dissolved <br />Analyte <br />Result Qualifier <br />Hardness as calcium carbonate <br />840 <br />General Chemistry <br />mg /L <br />Analyte <br />Result Qualifier <br />Chloride <br />160 <br />Sulfate <br />1000 <br />Alkalinity <br />290 <br />Bicarbonate Alkalinity as CaCO3 <br />290 <br />Carbonate Alkalinity as CaCO3 <br />ND <br />Hydroxide Alkalinity <br />ND <br />Specific Conductance <br />2600 <br />Total Dissolved Solids <br />2000 <br />pH adj. to 25 deg C <br />7.46 <br />RL <br />Unit <br />D <br />Prepared <br />Analyzed <br />Dil Fac <br />0.015 <br />mg /L <br />09/25/12 08:45 <br />09/25/12 17:44 <br />1 <br />0.010 <br />mg /L <br />09/25/12 08:45 <br />09/26/12 17:35 <br />1 <br />0.20 <br />mg /L <br />09/25/12 08:45 <br />09/26/12 17:35 <br />1 <br />0.0050 <br />mg /L <br />09/25/12 08:45 <br />09/25/12 17:44 <br />1 <br />0.10 <br />mg /L <br />09/25/12 08:45 <br />09/26/12 17:35 <br />1 <br />0.20 <br />mg /L <br />09/25/12 08:45 <br />09/25/12 17:44 <br />1 <br />0.010 <br />mg /L <br />09/25/12 08:45 <br />09/25/12 17:44 <br />1 <br />0.020 <br />mg /L <br />09/25/12 08:45 <br />09/25/12 17:44 <br />1 <br />5.0 <br />mg /L <br />09/25/12 08:45 <br />09/26/12 17:35 <br />1 <br />0.0090 <br />mg /L <br />09/25/12 08:45 <br />09/25/12 17:44 <br />1 <br />0.015 <br />mg /L <br />09/25/12 08:45 <br />09/26/12 17:35 <br />1 <br />RL <br />Unit <br />D <br />Prepared <br />Analyzed <br />Dil Fac <br />0.40 <br />No Unit <br />09/25/12 10:47 <br />1 <br />1000 <br />ug /L <br />09/25/1210:47 <br />1 <br />200 <br />ug /L <br />09/25/1210:47 <br />1 <br />200 <br />ug /L <br />09/25/1210:47 <br />1 <br />RL <br />Unit <br />D <br />Prepared <br />Analyzed <br />Dil Fac <br />1.3 <br />mg /L <br />09/28/12 09:46 <br />1 <br />RL <br />Unit <br />D <br />Prepared <br />Analyzed <br />Dil Fac <br />15 <br />mg /L <br />09/22/12 01:11 <br />5 <br />250 <br />mg /L <br />09/22/12 01:28 <br />50 <br />5.0 <br />mg /L <br />09/21/1216:59 <br />1 <br />5.0 <br />mg /L <br />09/21/1216:59 <br />1 <br />5.0 <br />mg /L <br />09/21/1216:59 <br />1 <br />5.0 <br />mg /L <br />09/21/1216:59 <br />1 <br />2.0 <br />umhos /cm <br />09/25/1211:17 <br />1 <br />20 <br />mg /L <br />09/24/12 09:22 <br />1 <br />0.100 <br />SU <br />09/21/12 08:24 <br />1 <br />Page 15 of 33 <br />TestAmerica Denver <br />9/28/2012 <br />