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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client : Shaw Environmental&Infrastructure,Inc. Service Request: P0900139 <br /> Project Name: Foothill Landfill,San Joaquin County Date Collected: 01/14/09 <br /> Project Number: 124591 (Ground Water) Date Received : 01/15/09 <br /> Sample Matrix : WATER Date Extracted : NA <br /> Date Analyzed : 01/15/09 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Sample Name: MW-2R Units : mg/L(ppm) <br /> Lab Code: P0900139-OOIMS P0900139-OOIDMS Basis: NA <br /> Test Notes <br /> Spike CAS Relative <br /> Prep Analysis Spike Level Sample Spike Result Recovery Result <br /> Analyte Method Method PQL MS DMS Result MS DMS MS DMS Acceptance Percent Notes <br /> y Limits Difference <br /> Chloride None 300.0 0.50 10.0 10.0 5.63 16.4 16.2 108 106 91-115 1 <br /> 1 <br /> Approved By / /° Date <br /> Report By:NFallahi <br />