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COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Sample Name <br />Lab Code: <br />Test Notes <br />Analyte <br />Chloride <br />Client : <br />Shaw Environmental & Infrastructure, Inc. Service Request : <br />P0700685 <br />Project Name : <br />Foothill Landfill, San Joaquin County Date Collected : <br />NA <br />Project Number : <br />124591 (Ground Water) Date Received : <br />NA <br />CAS <br />Sample Matrix: <br />WATER Date Extracted : <br />NA <br />Date Analyzed : <br />Laboratory Control Sample Summary <br />07/25/07 <br />Inorganic Parameters <br />Sample Name <br />Lab Code: <br />Test Notes <br />u <br />n <br />n <br />n <br />I I <br />0 <br />C <br />L -J <br />Laboratory Control Sample <br />Analyte <br />Chloride <br />Nitrate as Nitrogen <br />Sulfate <br />u <br />n <br />n <br />n <br />I I <br />0 <br />C <br />L -J <br />Laboratory Control Sample <br />Basis : NA <br />P0700685-LCS <br />CAS <br />Percent <br />Recovery <br />Analysis <br />Percent <br />Acceptance Result <br />Units <br />Method <br />True Value <br />Result <br />Recovery <br />Limits Notes <br />mg/L (ppm) <br />300.0 <br />5.00 <br />4.71 <br />94 <br />90-110 <br />mg/L (ppm) <br />300.0 <br />1.13 <br />1.05 <br />93 <br />90-110 <br />mg/L (ppm) <br />300.0 <br />5.00 <br />4.71 <br />94 <br />90-110 <br />Approved By: D Date: <br />i <br />Report By:RWONG <br />