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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 lil <br /> I Q <br /> • Quality Control Report [713)660 0901 <br /> EXXON Company U S A <br /> UP0137 1 <br /> Analysis Purgeable Aromatics WorkOrder 00120251 <br /> Method SW8021 B Lab Batch 0 826175 <br /> Matrix Spike(MS)1 Matrix Spike Duplicate(MSDy <br /> Sample Spoked 00120278-05 <br /> RunlD HP–U_001213A 506278 Units uglL <br /> Analysis Date 12/13/2000 11 39 Anailyst DL <br /> -- -- Analyte J Sample T MS MS Result MS % I MSD MSD Result MSD% I RPD RPD Low High <br /> Result Spike Recovery I Spike i i Recovery Limit I Limit Limit <br /> Added I Added <br /> ylenes,Total — 67 60�60 115 80 0; 60�—_ 1181 85 0; 606, 18I 53, 144 <br /> 1 <br /> I <br /> 1� <br /> 1 <br /> 1 <br /> 1 <br /> I <br /> 1 <br /> 1 <br /> 1 <br /> jr,fie-rsiZAIUT-NoTbetected at the Reporting Limit MI -Matnx Enterference� <br /> B-Analyte detected In the associated Method Blank D-Recovery Unreportable due to Dilution <br /> J-Estimated value between MDL and PQL *-Recovery Outside Advisable QC Limits <br /> The percent recoveries for QC samples are correct as reported Due to significant figures and 00120251 Page 16 <br /> rounding the reported RPD may differ from the displayed RPD values but Is correct as reported 12/21/0010 os 08 Ann <br /> I <br />