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' HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> ® (713)660 0901 <br /> Quality Control Report <br />' EXXON Company U S A <br /> U P3942 1 <br /> Analysis Purgeable Aromatics WorkOrder 01030308 <br /> Method SW8021B Lab Batch ID R31472 <br /> Method Blank Samples in Analytical Hatch <br /> RunlD VARE_0103140-602195 Units ug/L Lab Sample ID Client Sample 1D <br />�naiysis Date 03/14/2001 20 06 Analyst DL 01030308-O IA MW-2 <br /> 01030308-02A MW-3 <br /> 01030308-03A MW-4 <br />' Analyte Result Rep Llmitl 01030308-04A MW-50'1030308-05A MW-6 <br /> (Benzene NRI 0 50 <br /> IEth lbenzene NDI 0501 01030308-06A MW-7 <br /> Meth I ten-bu I ether r401 0 5C)l 01030308-07A MW-8 <br /> Toluene NCI 0 50 01030308-08A MW-9 <br />' Irn -X lene ND 050. <br /> o-Xviene NDJ 0 50 01030308-09A MW-10 <br /> Xylenes Total ND 1 050 01030308-10A MW-12 <br /> Sum 1 4-Dlfluorobenzene 9681 72-137 01030308-11A MW-13 <br /> Surr 4-Bromofluorebenzene 93 6 48-156 <br /> 01030308-12A V-1 <br /> 01030308-13A V-2 <br /> 01030308-14A V-3 <br />' 01030308-15A V-4 <br /> 01030308-18A RW-4 <br /> 01030308-19A UV$-MW 1 <br /> 01030308-20A UVB-MW2 <br /> Laboratory,Control Sample (LCS) <br /> RunlD VARE_0103140-B02194 Units ug/L <br /> Analysis Date 03/14/2001 19 18 Analyst DL <br /> IAnalyte Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit <br /> Benzene 50{ 591 1171 70 130 <br /> 1Ethylbenzene 1 501 591 119 70 130 <br /> Methyl tent-butyl ether 501 44 881 70� 130E <br /> Toluene 50 58 1151 70 1301 <br /> m p-Xylene 1001120 1171 70 130 <br /> o-Xylene 501 59 1171 70 1301 <br /> Xylenes Total 150 179 119 70 130 <br /> Matrix Spike M5 I Matrix S121ke Du licate MSD <br /> Sample Spiked 01030308-01 <br /> RuniD VARE_0103141)602196 Units ugIL <br /> Analysis Date 03/14/2001 20 31 Analyst DL <br /> rpercent <br /> llfiers NDIU -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 /> recoveries for QC samples are correct as reported Due to significant figures and 01036308 Page 25 <br /> rounding, the reported RPD may differ from the displayed RPD values but is correct as reported 3iZ1101 10 24 00 AM <br /> r <br />