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v <br />11 <br />J <br />11 <br />1� <br />1� <br />LI <br />COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client : Shaw Environmental & Infrastructure, Inc. <br />Project Name: Foothill Landfill, San Joaquin County <br />Project Number : 791289 (Leachate Module) <br />Sample Matrix : WATER <br />Sample Name <br />Lab Code: <br />Test Notes <br />Analyte <br />Sulfate <br />Service Request : <br />P0700116 <br />Date Collected: <br />NA <br />Date Received: <br />NA <br />Date Extracted : <br />NA <br />Date Analyzed : <br />02/02/07 <br />Matrix Spike/Duplicate Matrix Spike Summary <br />Batch QC <br />P0700115-004MS P0700115-004DMS <br />Units: mg/L (ppm) <br />Basis: NA <br />Spike <br />CAS RelativePreP Analysis Spike Level Sample Spike Result Recovery <br />Result <br />Method Method PQL MS DMS Result MS DMS MS DMS Acceptance Percent Notes <br />Limits Difference <br />None 300.0 0.5 10.0 10.0 13.4 23.6 23.5 102 101 80-120 <1 <br />Approved By Date <br />Report By:RWONG <br />i <br />