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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc. Service Request: P0802431 <br /> Project Name: Foothill Landfill,San Joaquin County Date Collected : 07/30/08 <br /> Project Number: 124591 (Ground Water) Date Received : 07/31/08 <br /> Sample Matrix: WATER Date Extracted : NA <br /> Date Analyzed: 07/31/08 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Sample Name: MW-4 Units: mg/L(ppm) <br /> Lab Code: P0802431-002MS P0802431-002DMS Basis : NA <br /> Test Notes: <br /> Spike <br /> CAS Relative <br /> Prep Analysis Spike Level Sample Spike Result Recovery <br /> Acceptance Percent Result <br /> Analyte Method Method PQL MS DMS Result MS DMS MS DMS Limits Difference Notes <br /> Chloride None 300.0 0.50 10.0 10.0 6.73 16.7 16.8 100 101 90-110 <1 <br /> Approved By Date <br /> S <br /> Report By:SAnderson <br />