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A <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> Client: Shaw Environmental&Infrastructure,Inc. Service Request No.: P0700376 <br /> Project: Corral Hollow Landfill/124592(Ground Water) Date Received: 04/17/07 <br /> Sample Matrix: Water <br /> CASE NARRATIVE <br /> All analyses were performed consistent with the quality assurance program of Columbia Analytical Services,Inc.(CAS). <br /> This report contains analytical results for samples designated for Tier II data deliverables. When appropriate to the <br /> method,method blank results have been reported with each analytical test. Surrogate recoveries have been reported for <br /> all applicable organic analyses. Additional quality control analyses reported herein include: Matrix/Duplicate Matrix <br /> Spike(MS/DMS),and Laboratory Control Sample(LCS). <br /> Sample Receipt <br /> The samples were received for analysis at Columbia Analytical Services on 4/17/07. No discrepancies were noted <br /> upon initial sample inspection. The samples were received in good condition and consistent with the accompanying <br /> chain of custody form. The samples were stored at 4°C upon receipt at the laboratory. <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Batch QC was run along with these samples. These results have been provided for informational purposes only. The <br /> Method Blank and Laboratory Control Samples were within control criteria. <br /> General Chemistry Parameters <br /> No anomalies were encountered during these analyses. <br /> I <br /> ® <br /> Approved <br /> b V �C�--�—"� l <br /> Y Date <br />