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HOUSTON LABORATORY <br /> 8886 INTERCHANGE DRIVE <br /> J HOUSTON TEXAS 77054 <br /> rg <br /> (7131 660 0901 <br /> • Quality Control Report <br />' EXXON Company U S A <br /> U P3942 <br /> Analysis Purgeable Aromatics WorkOrder 00120503 <br /> ethod SW8021B Lab Batch ID 826390 <br /> Method Blank Samples In Analytical Batch <br /> RunlD HP_R-001216A 509889 Units ug/L Lab Sample ID Client Sample ID <br />�nalysis Date 12/1612000 5 48 Analyst D_R 00120503-11A RW-1 <br /> 00120503-12A V-1 <br /> 00120503-13A MW-6 <br />' —`--_ ly - - -- - 00120503-14A MW-5 <br /> Analyte Result Rep Llmitl 00120503-15A MW-8 <br /> Benzene -- ---- Np 0501 <br /> Ethylbenzene _ _ _ _NjD,___0 50 00120503 16A RW-4 <br /> Methyl tert-butyl ether _ `--_� NO 0 50, 00120503-17A V-3 <br />' Toluene _ W -- _ND - 050 00120503 18A MW-13 <br /> m p_Xylene ND <br /> o-Xylene _ _ WND_ 060 00120503-19A MW-10 <br /> tXyienes Total - _- -ND --050. <br /> Surr 1 4-Oifluorobenzene _ 1021 72-137 <br /> Surr 4-13romcfluorcbenzene vLL-T 89 3 48-156 <br /> Laboratory Control Sample(LCS) <br /> RunlD HP_R_001216A-509888 Units ug/L <br /> Analysis Date 12116/2000 4 56 Analyst D_R <br />'. Analyte Spike Result Percent Lower Upper , <br /> � r I <br /> Added f Recovery I Limit Limit <br />' Benzene -_ - - -- - -� ----�- 50i---47 = - 94 -_70._ --130. <br /> 1=thylbenzene_ 50, 45 91 70 1301 <br /> Methyl tert-butyl ether 501 44 881 70 -1301 <br /> Toluene - --- — Y - _-�_- 501 461 � �_-92, ---70 - 1301 <br /> m p-Xylene__ T ------- 1001 90----90' - - 70 --1301 <br /> o-Xylene - 50' 45 901 701 1301 <br /> Xylenes Total _ 150E �135.� 90' 70, - 1301 <br /> Matrix Spike(MS)!Matrix Spike Duplicate(MSD) <br /> Sample Spiked 00120503-18 <br /> RunlD HP_R_001216A-509892 Units ug/L <br /> Analysis Date 12/16/2000 6 13 Analyst D_R <br /> A Analyte Sample MS MS ResuEt , MS % MSD MSD Result MSD % RPD RPD-LowHigh <br /> Result Spike Recovery Spike i Recovery I Limit Limit Limit <br /> Added i <br /> .Added I I <br /> enzene—- NDI 20 -12`4 621 - 20 ---- 16 - --v 80 61 5 9' 21' 3Z 1641 <br /> thylbenzene NDI 20, -- - 111--- 573 20 15_1 7361 50 * 191 521_142; <br /> thyl Cert-butyl ether ND 20 - - F 17 -- - 839 20 - 21 r - --1071 3 8 20 391 150, <br /> rs ND/U-Not Detected at the Reporting Limit MI Matrix Interference <br /> I 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 00120503 Page 27 <br /> rounding the reported RPD may differ from the displayed RPD values but is correct as reported 112101 9 03 55 AM <br />