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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: P0900161-001MS P0900161-00IDMS 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 /> Limits Difference <br /> Nitrate as Nitrogen None 300.0 0.12 2.26 2.26 2.92 5.07 5.01 95 92 86-110 1 <br /> Approved By Date: <br /> 9 <br /> Report By:NFallahi <br />