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1 HOUSTON LABORATORY <br /> 8680 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> ® (713)660-0901 <br /> . Quality Control Report <br /> EXXON Company U S A <br /> UP3942 1 <br /> Inalysis Purgeable Aromatics WorkOrder 01060855 <br /> Method SVV8021B Lab Batch ID 837943 <br /> Matrix Spike(MS)1 Matrix Spike Duplicate(MSO) <br /> Sample Spiked 01060772-01 <br /> RunID VARD_010627A-721641 Units ug/L <br /> Analysis Date 06/27/2001 12 31 Analyst DL <br /> _- �lAnalyte Sample M5 I MS Result i MS% 1 MSD MSD Result 1 MSD% I RPD iuRPD Law High <br /> Result Spcke I Recovery Spike I Recovery I mit Limit Limit <br /> Added Added <br /> luene NDI 201 151 743 20 171 85 6{ 14 11 201 38 1591 <br /> p-Xytene NDI 401 281 71 0 40 291 71 3104001 171 531 1441 <br />-Xylene ND 201 15� 7541 20 151 759107641 181 531 143 <br /> -77 <br /> lenes Total NDJ 601 431 71 71 60 441 7331 2 301 18 5317 144 <br /> i� <br /> I <br /> 1 <br /> I <br /> I <br /> 1 <br /> M <br /> Q rs ND/U-Not Detected at the Reporting Limit Ml-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 /> e percent recoveries for QC samples are correct as reported Due to significant figures and 01060855 Page 29 <br /> rounding the reported RPD may differ from the displayed RPD values but is correct as reported 7117101 2 33 12 PM <br />