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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Client: ARCO Products Company Service Request: L9901978 <br /> WA#24406 00/6020-Manteca Date Collected- NA <br /> Project, Date Received: NA <br /> Sample Matrix: Soil <br /> Date Digested: 513194 <br /> Date Analyzed- 5/3199 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Lead,Total <br /> Sample Name Batch QC Units mg/Kg(ppm) ' <br /> Lab Code L9901977-007MS, L9901977-007DMS Basis Wet <br /> Test Notes <br /> Percent Recovery <br /> CAS Relative <br /> Prep Analysis Spike Level Sample Spike Result Acceptance Percent Result <br /> Analyte Method Method MRL MS DMS Result MS DMS MS DMS Limits Difference Notes <br /> Lead,Total EPA 3050B 6010B 5 500 500 ND 508 559 102 112 75-125 10 <br /> Date <br /> Approved By <br /> Page No <br /> 01979]CPJEI DMS 51V99 <br />