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Case Narrative <br /> Client: Norwest Corporation TestAmerica Job ID: 280-76902-1 <br /> Project/Site: Colorado Springs Transit <br /> ID: 280-76902-1 <br /> Laaoratory: TestAmerica Denver <br /> Narrative <br /> CASE NARRATIVE <br /> Client: Norwest Corporation <br /> Project: Colorado Springs Transit <br /> Report Number: 280-76902-1 <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 /> :I PT <br /> .samples were received on 11/16/2015;the samples arrived in good condition, properly preserved and on ice. The temperature of the <br /> coolers at receipt was 2.2C. <br /> TOTAL METALS(Method 200.7/200.8) <br /> No analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. <br /> GENERAL CHEMISTRY-VARIOUS <br /> The accuracy and precision of the Total Phosphorus MS/MSD performed on a laboratory generated sample could not be reliably evaluated, <br /> as the concentrations present in the parent sample were 4 times greater than the matrix spike concentration. The acceptable LCS <br /> analysis data indicated that the analytical system was operating within control;therefore,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 /> TestAmerica Denver <br /> Page 4 of 25 12/10/2015 <br />