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t7 <br /> COLUMBIA ANALYTICAL SERVICE NC. <br /> QA/QC Report <br /> Client ARCO Products Companv Service Request: 59600231 <br /> Project 1775-220 002/TO#19350 00 /2076 Lodi Date Collected. 2/2/96 <br /> Sample Matrix Water Date Received 2/6/96 <br /> Date Extracted, NA <br /> Date Analyzed. 2112,14/1996 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> BTE <br /> EPA Methods 5030/8020 <br /> Units ug/L (ppb) <br /> Sample Name MW-1(61) <br /> Lab Code S9600231-001 <br /> Percent Recovery <br /> CAS Relative <br /> Spike Level Sample Spike Result Acceptance Percent <br /> Ana1vte MS DMS Result MS DMS NIS DMS Limits Difference <br /> Benzene 25 25 ND 250 25 3 100 101 75-135 1 <br /> Toluene 25 25 ND 25 1 25 4 L00 102 73-136 1 <br /> Ethylbenzene 25 25 ND 250 255 100 102 69-142 2 <br /> i <br /> i <br /> DWIS1060194 Page 6 <br />