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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report ' <br /> Client <br /> Bytes Environmental Service Request 52000486 <br /> Project U-Haul 970950 SCl/002-70950 Date Collected NA <br /> Simple Matrix Water Date Received NA <br /> Date Extracted NA <br />[ Date Analyzed 2/20/00 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Fuel Oxygenates <br /> Sample Name BATCH QC Units ug/L(ppb) <br /> Lab Code 52000474-009MS, 52000474-009DMS Basis NA <br /> Test Notes <br /> Percent Recovpry <br /> iCAS Relative <br /> Pi ep An Clysis Spike Level Sample Spike Result Acceptance Percent Result <br /> Annlyte Method Method MRL MS DMS Result MS DMS MS DMS Limits Difference Notes <br /> i <br /> 1,1-Diehl oroethene EPA 5030A 8260 0 5 10 10 ND 8 1 75 81 75 62-145 8 <br /> Benzcne EPA 5030A 8260 0 5 10 10 ND 8 1 8 0 81 80 77-127 1 <br /> Trichloroethene EPA 5030A 8260 0 5 10 10 ND 7 6 73 76 73 71-119 4 <br /> i Toluene EPA 5030A 8260 0 5 10 10 ND 83 8 I 83 81 76-124 2 <br /> Chlorobenzene EPA 5030A 8260 05 10 10 ND 94 88 94 88 75-127 7 <br /> I <br /> I <br /> i <br /> I <br /> i <br /> I <br /> iApproved By Date 0 a3-oz, <br /> DMS/070597p <br /> IPage 17 <br />