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Case Narrative <br />Client: Coors Energy Company TestAmerica Job ID: 280 - 54414 -1 <br />Project/Site: Coors - Keenesburg Mine, CO 80643 <br />Job ID: 280 - 54414 -1 (Continued) <br />Laboratory: TestAmerica Denver (Continued) <br />GENERAL CHEMISTRY <br />Sample AMW -1 (280- 54414 -2) was unavoidably reanalyzed outside of the analytical holding time for Total Dissolved Solids (TDS) <br />due to the original results not meeting historically reviewed data range. <br />The Anions by method 300.OMS /MSD associated with batch 280 - 223937 exhibited spike recoveries outside QC control limits for <br />Sulfate; however, these are estimated values as the concentrations exceeded the calibration range. The associated LCS /LCSD <br />was in control and demonstrates that operating procedures were in control. No further action was required. <br />No other anomalies were observed. <br />Page 4 of 34 <br />TestAmerica Denver <br />5/6/2014 <br />