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COLUMBIA ANALYTICAL SERVICES,INC. <br /> I <br /> QA/QC Report <br /> i <br /> Client: MWH Laboratories Service Request: L2301262 <br /> Project: 110732 Date Collected: NA <br /> Sample Matrix: Water Date Received: NA ; <br /> Date Extracted: 6117/03 <br /> Date Analyzed: 6118/03 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Hydrocarbon Scan/Fuel Characterization If <br /> i <br /> Sample Name: Batch QC Units: ug/L(ppb) <br /> Lab Code: L2301240-001MS L2301240-001 DMS Basis: NA <br /> Test Notes: <br /> Percent Recovery <br /> CAS Relative <br /> Prep Analysis Spike Level Sample Spike Result Acceptance Percent Result <br /> Analyte Method Method MILL MS DMS Result MS DMS MS DMS Limits Difference Notes <br /> Diesel EPA 3510M 8015M 50 381 381 ND 339 340 89 89 41-136 <1 <br /> I <br /> 5 <br /> 1 <br /> i <br /> r ` <br /> } <br /> Approved By: Date: <br /> DMSM20597p 1 <br /> 01262SOH.MM1-DMS 6119103 Page No.: <br />