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r <br /> ASSOCIATED LABORATORIES <br /> QA REPORT FORM <br /> QC Sample LR 79717-426 <br /> Matrix AIR <br /> Prep Date 09/14/01 <br /> Analysis Date 09/14/01-09/15/01 <br /> IDWs in Batch LR 79744,79745,79777 <br /> SAMPLE RESULT/SAMPLE DUPLICATE <br /> + Sam ie Result Sample Dup. <br /> Test Method Reporttng Units=Vppb RPD <br /> Benzene 8021 NO ND 0 <br /> Toluene 8021 1,131 I,101 3 <br /> Ethylbenzene 8021 1,595 1,512 5 <br /> Xylenes 8021 75,904 72,944 1 4 <br /> Gas 8015M 708,585 661,446 7 <br /> r <br /> 6 <br /> ND- 'U'-Not Detected RPD LIM17S = 20 <br /> RPD—Relative Percent Difference of Sample Result and Sample Duplicate <br /> 9118!2001 8021air 0914 <br />