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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> ® HOUSTON,TX 77054 <br /> Quality Control Report (713) fisc 0901 <br /> lAnalysis <br /> EXXCN Company U S A <br /> UP37081 Purgeable Aromatics WorkOrder 01080655 <br />,flillethod SW8021 B Lab Batch Ill 842086 <br /> Method Blank Samples in Analytical Batch <br /> RuniD VANE-010822A 803833 Units ug/L <br /> Lab Sample fp Client Sample ID <br />�nalysis Date 08/22/2001 1517 Analyst DL 01080655-01A MW-1 <br /> 01080655-03A MW-5 <br /> 01080655-04A MW-6 <br /> 01080655 05A MW 7 <br /> Analyte Result Rep Llmit,ND 01080655-07A MW-9 <br /> Benzene 0 501 <br /> Eih benzene NDI -L5jo 01080655-08A MW-10 <br /> Toluene ND 050,0 501 01080655 09A VEW 1 <br />' ='X ILe = - _ ND_ - 0 501 <br /> o Xylene ND 0 501 <br /> Xylenes,Total _ _N_DI _0 501 <br /> Surr 1 4 Di#luornbenzene 11001 721971 <br /> Surr 4-8romofluorobenzene 1037. 48 1561 <br /> Laboratory Control Sample(LCS) <br /> Run1D VARE_010822A 803832 Units ug/L <br />' Analysis Date 08/22/2001 14 12 Analyst DL <br /> Anaiyte- - - Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit <br /> Benzene 501 53 105 701 130 <br />' Ethylbenzene _- - - 5c,- 541 108 701 130 <br /> Toluene 50 52' 1051 70 130 <br /> m,p-Xylene 100' 110 1081 70, 130 <br /> o-Xylene 501 531 1061 70 130 <br /> Xytenes Total -- _ 150 1631 1091 701_- 130 <br /> Matrix Spike(MS)/Matrix Spike Duplicate(MSD) <br /> Sample Spiked 01080655-04 <br /> RunID VAR E_010822A 803834 Units ug/L <br /> Analysis Date 08/22/2001 15 42 Analyst DL <br /> Analyte Sample MS� MS Result MS °% MSD MSD Result MSD°o RPD RPD Low LLHghResult Spike Recovery Spike Recovery Limit Limit <br /> Added Added <br /> ryz:lne NDI 201 20 98 ak 20 20' 1001 1 13 21 321 1641 <br /> tl <br /> enzene --- -- - -- - -- ND' -- 20 - 20 98 6 20� 201 --99 1 0 490' 191 521 1421 <br /> Toluene ND 20 19 91 3� 20l 191 932 1 98' 20, 381 1591 <br /> ibp <br /> TXylene T - - `-- - -- NDI---40'-- - - - 40- - -991 - 40L - 401 101 1 81 17 531 144 <br /> ylene ND 20' 19 973 201 20V 989 1 61 18 531 1431 <br /> Wrs ND/U Not Detected at the Reporting Limit MI - Matrix interference <br />' B -Analyte detected 1r the associated Method Blank D Recovery Unreportabie due to D+Iution <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 <br /> rounding <br /> unding the reported RPD may differ from the displayed RPD values but Is correct as reported 9,31iol 12 24 37 PM <br />