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1 <br /> I iOUST LABO <br /> 8880 INTINTERCHANGEE DRIVE pRIVE <br />' O HOUSTON TEXAS 77054 <br /> R [77 31 660 0901 <br /> Quality Control Report <br />' EXXON Company U S A <br /> U P3942 1 <br /> Analysis Purgeable Aromatics WorkOrder 01030308 <br /> Method SW80218 Lab Batch ID R31566 <br /> Matrix Spike MS !Matrix Spike Duplicate MSD <br /> Sample Spiked 01030309-03 <br />' RunID VARE_010315A 603888 Units ug/L <br /> Analysis Date 03/15/2001 15 32 Analyst D_R <br /> Analyte Sample MS M5 Result MS % MSD MSD Result 1 MSD % 1 RPD I RPD Law High 1 <br /> Result Spike Recovery Spike Recovery Limit Limit Limit 1 <br /> Added Added <br /> 1 <br /> oluene I ND 201 20 997 20 201 1011 1 561 201 381 159 <br /> m p-Xylene NDI 40 421 106 40 431 1081 1 501 17 53 144 <br /> o-Xylene 1 NDS 20 211 105 20 221 109 344; 181 53 1431 <br /> ylenes Total I ND 60 631 105 60 651 1081 3 121 181 531 1441 <br /> I <br /> I <br /> I <br /> lifiers ND/U -Not Detected at the Reporting Limit MI -Matrix Interference <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 01030308 Page 29 <br /> rounding, the reported RPD may differ from the displayed RPD values but Is correct as reported 'r21101 10 24 03 AM <br />