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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> 0 (713)iso osol <br /> . Quality Control Report <br /> EXXON Company U S A <br /> UP0137 1 <br /> Analysis Purgeable Aromatics WorkOrder 00120251 <br /> ethod SW8021B Lab Batch ID R25982 <br /> Method Blank Samples in Analytical Batch <br /> RunID HP—N-001 211 A-502480 Units ug/L Lab Sample ID Client Sample ID <br />�nalysis Date 12/11/2000 13 03 Analyst DL 00120251-01A MW-1 <br /> 00120251-02A MW-2 <br /> 00120251-03A MW-3 <br /> I — <br /> 00120251-04A MW-4 <br /> Analyte —_— Result Rep Limt1 <br /> 1Benzene NDI 0 50. 00120251-05A MW-5 <br /> 1Ethylbenzene �i ND! 050 <br /> 40120251-O6A MW-6 <br /> Tciuene N01 050, <br /> m pXylene i ND, 050, <br /> lo-xylene_ NDI _0 50 <br /> iXykenes Total ND 0501 <br /> i Surr 1 4-Difkuorobenzene_ ' 844 72-1371 <br /> I Surr 4-Bromofluorobenzene 98 31 48-1561 <br /> Laboratory Control Sample(LCS) <br /> RunlD HP_N_001211A-502479 Units ug/L <br /> IAnalysis Date 12!11!2000 12 11 Analyst DL <br /> k --- Analyte �5plke Result PercentLower I Upper <br /> _ EE! Added Recovery Limit Ij Limit <br /> Benzene 50 48 97' 70 1301 <br /> iF=thylbenzene j 501 491 981 701 1301 <br /> Toluene 501 4911 991 701 1301 <br /> m,p-Xylene 1001 100'1 1001 70 1301 <br /> �o-Xylene 501 501 991 701 130 <br /> (Xylenes Total 1501 1501 100 70; 130 <br /> Matrix Spike(MS), Matrix Spike Duplicate(MSD) <br /> Sample Spiked 00120230-03 <br />' RunID HP_N_001211A 502482 Units ug/L <br /> Analysis Date 12/11/2000 13 31 Analyst DL <br /> Analyte Sample MS , MS Result 1 MS % MSD ' MSD Result MSD% i RPD RPD Low High <br /> Result Spike i Recovery I Spike I Recovery I Limit' Limit Limit <br /> 1 i Added a Added 1 <br /> rthylb—enzene — <br /> ene 050 201 201 96 8 20 19, 94 21 2 751, 21 f 32, 1641 <br /> ---- -- 1 8i 20 22`99 2 20' — 21 947- 4 681 191 521 142 <br />(Toluene 0 57 201 21, 101 20 201 97 41 3 34' 201 381 1591 <br /> p-Xylene 1 9 401 43 102, 401 411 98 81 3 101 17 531 1441 <br /> -Xylene ---- 0 551 Y 20— 201 98 41 r 20—�--— 191 94 D' 4 561 181 531 1431 <br /> Hers NDlU 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 00120251 Page 12 <br /> rounding the reported RPD may drffer from the displayed RPD values but is correct as reported 12121100 10 09 02 AM <br /> 1 <br />