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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client; Shaw Environmental&Infrastructure,Inc. Service Request: P0900161 <br /> Project Name: Foothill Landfill,San Joaquin County Date Collected: 01/15/09 <br /> Project Number: 124591 (Ground Water) Date Received: 01/16/09 <br /> Sample Matrix ; WATER Date Extracted: NA <br /> Date Analyzed: 01/16/09 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Sample Name: MW-3 Units.: mg/L(ppm) <br /> Lab.Code: P0900161-OOlMS P0900161-OOlDMS Basis : NA <br /> Test Notes <br /> Spike CAS Relative <br /> Prep Analysis Spike Level Sample Spike Result Recovery Acceptance Percent Result <br /> Analyte Method Method PQL MS DMS Result MS DMS MS DMS Limits Difference Notes <br /> Sulfate None 300.0 0.50 10.0 10.0 6.51 16.5 16.4 100 99 83-116 <1 <br /> Approved By Date & 0 <br /> Report By:NFallahi <br />