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HOUSTON LABORATORY <br /> 8880 MTERCHANGE DRIVE <br />' HOUSTON TEXAS 77954 <br /> QQ (713)659 9991 <br /> . Quality Control Report <br />' EXXON Company U S A <br /> U P 3942 <br /> Analysis Purgeabte Aromatics WorkOrder 00120503 <br /> Method SW80218 Lab Batch ID R26367 <br /> Matrix Spike (MS)! Matrix Spike Duplicate(MSD) <br /> Sample Spiked 00120503-01 <br />' RunlD HP_R_001215A-509410 Units ug/L <br /> Analysis Hate 12/15/2000 21 12 Analyst D—R <br />�— Analyte Sample M5 MS Result MS % MSD MSD Result MSD %—RPD RPO Law High <br /> Result Spike Recovery Sp;ke Recovery Limit Limit Limit <br /> Added Added <br /> -- --- - -- - -2-0—-- 2 <br /> - — ---- ----- ------87—, <br /> _�_ <br /> oluene Nt7� 20 96 6 0 20 98 7 7,,—2 12' —201381 1591 <br />,m p-Xylene-----� --- -- —---_ 0 71 T 40 ------- 42 104 40F 43--- 107 2 16' 17 53-1144- <br /> o-Xylene <br /> 4o-Xylene --_— _ — — ND 20� 21r 103' 20- —21- — 105- 1 94, 181 531 1431 <br /> ylenes Total 071 60 63 104, 60, 644 105 1 591 181 531 144' <br /> 1 <br /> I <br /> lers ND/U- Not Detected at the Reporting Limit MI-Matrix Interference �— <br /> I B -Analyte detected �n the associated Method Blank D Recovery Unreportable due to Dilution <br /> J Estimated value between IvIDL and PQL -- Recovery Outside Advisable QC Limits <br /> The percent recoveries for QC sampkes are correct as reported Due to significant figures and 00120503 Page 25 <br />,rounding the reported RPD may differ from the displayed RPD values but is correct as reported 112101 9 03 52 AM <br />