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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> ® HOUSTON TX 77054 <br /> lie Quality Control Report (713)660-0901 <br /> EXXON Company U S A <br /> UP3942 1 <br /> Inalysis Purgeable Aromatics WorkOrder 01120303 <br /> Method SW80218 Lab Batch ID R49831 <br /> Method Blank Samples in Analytical Batch <br /> LID VARE 0112140-949236 Units ug/L Lab Sample ID Client Sample ID <br /> naiysis Date 12/14/2001 20 54 Analyst DL 01120303-08A V 3 <br /> 01120303-09A V 2 <br /> 01120303-10A V 1 <br /> Analyte Result Rep I --f <br /> !Benzene N[}1 0 SDI <br /> IEth (benzene NDI 050 <br /> Toluene N01 050f <br /> m -X lene NDI 0 501 <br /> o-X lene N01 0 5D <br /> ;X lenes Total NDI 0501 <br /> Surr 1 4-Wuorobenzene 10301 72-130 <br /> Surr 4-8romofluorobenzeno I 9091 70-1301 <br /> Laboratory Control Sample(LCS) <br /> RunlD VARE_011214D-951525 Units ug/L <br /> Analysis Date 12/14/2001 17 25 Analyst DL <br /> Analyte Spike Result Percent Lawer Upper <br /> Added Recovery Limit Limit <br /> IISenzene 1 5—OF 53 1071 701 1301 <br /> lEthylbenzene 1 501 531 1061 701 130 <br /> Toluene i 501 53 107 701 130 <br /> m,p-Xylene 1001 1101 1071 701 1301 <br /> lo-Xylene 501 541 1071 701 130 <br /> 1Xylenes Total 1 1501 164 1091 701 130 <br />' Matrix Spike MS 1 Matrix Spike Duplicate MSO <br /> Sample Spiked 01120496-03 <br /> RunlD VARE 011214D 951597 Units ug/L <br />' Analysis Date 12/14/2001 18 44 Analyst OL <br />' Analyte Sample MS MS Result MS % I MSD MSD Result MSD % ! RPD RPD Law High <br /> Result Spike Recovery ' Spike Recovery 4 Limit Limit Limit <br /> Added ' Added <br /> nzene 1 NDI 201 171 83 3 20 191 91 41 9 31; 21, 32,� 154f <br /> ylbenzene 1 NDI 201 171 841 20 181 8951 6 27i 19 —52[ 142 <br /> luene NDI 201 171 84 3 201 181 91 21 7 901 20, 381 1591 <br />�ualiflers ND/U-Not Detected at the Reporting Limit MI - Matrix Interference <br /> B-Anaiyte detected ir1 the associated Method Bfank D -Recovery Unreportable due to Dilution <br /> J-Estimated value between MDL and PQL `-Recovery Outside Advisable QC Limits <br /> fue percent recoveries for QC samples are correct as repoRed Due to significant figures and <br /> nding the reported RPD may differ from the displayed RPD values but is correct as reported 12/1 9161 3 48 06 PM <br />