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Case Narrative <br /> Client: Norwest Corporation TestAmerica Job ID: 280-100637-1 <br /> Project/Site: Colorado Springs Transit <br /> ID: 280-100637-1 <br /> Laboratory: TestAmerica Denver <br /> Narrative <br /> CASE NARRATIVE <br /> Client: Norwest Corporation <br /> Project: Colorado Springs Transit <br /> Report Number: 280-100637-1 <br /> With the exceptions noted as flags or footnotes,standard analytical protocols were followed in the analysis of the samples and no <br /> problems were encountered or anomalies observed. In addition all laboratory quality control samples were within established control <br /> limits,with any exceptions noted below. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of <br /> the method. In some cases,due to interference or analytes present at high concentrations,samples were diluted. For diluted samples, <br /> the reporting limits are adjusted relative to the dilution required. <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> All holding times were met and proper preservation noted for the methods performed on these samples, unless otherwise detailed in the <br /> individual sections below. <br /> =1PT <br /> _ samples were received on 08/25/2017;the samples arrived in good condition, properly preserved and on ice. The temperatures of <br /> the coolers at receipt time were 1.70 C and 3.40 C. <br /> Please note: It was noted limited sample volume for sample LTC-GW-&CH2, however,the laboratory will have sufficient volume for all <br /> analysis. <br /> DISSOLVED METALS(Method 200.7/200.8) <br /> Aluminum and Lead were recovered outside the QC limits, biased high, in the Initial Calibration Verification (ICV)standard. This is an <br /> indicator that data may be biased high. As no detectable concentrations of Aluminum and Lead are present in the associated samples, <br /> corrective action is deemed unnecessary. <br /> No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. <br /> GENERAL CHEMISTRY-VARIOUS <br /> Due to matrix interferences, sample LTC-GW-7 CH2 and LTC-GW-6 DEEP were analyzed at a dilution for Method 300.0. The reporting <br /> limits have been adjusted relative to the dilution required. <br /> No analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page <br /> TestAmerica Denver <br /> Page 4 of 26 9/6/2017 <br />