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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> Q (713)660 0901 <br /> Quality Control Report <br />' EXXON Company U S A <br /> UP3942 <br /> Analysts Volatile Organics by Method 8260B WorkOrder 00120503 <br /> ethod SW82608 Lab Batch ID R26664 <br /> Method Blank Samples In Analytical Batch <br /> RunlD 0_001221A-515049 Units ug/L Lab Sample ID Client Sample ID <br />'nalysls Date 12121/2000 13 48 Analyst JC 00120503-04B MW-4 <br /> 00120503-15B MW-8 <br /> Analyte -- TResult Rep Limit <br /> Methyl tent-butvi ether_ _ _ ND' 5 0� <br /> Surr 1 2-Dcchloroethane-d4 104 01 _62-119 <br /> Surr 4 8rcmofluorob_e_n_zene _ _ 980, 78-1231 <br /> Surr Toluene d8 � 88 01 74-122 <br /> Laboratory Control Sample(LCS) <br />' RunlD Q_001221A-515048 Units ug/L <br /> Analysis Date 12121/2000 12 52 Analyst Jc <br /> _ Analyte Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit 1 <br /> 1 1-Dlchloroethene 50 W 42 84' 61 145' <br /> • Benzene_ _ __ 501 52 _ 104 76�Y 127 <br /> Chlorobenzene 501 58, 116. 75 1301 <br /> Toluene W �50' 541 108 76 125E <br /> Tnchlaroethene 50, 541 1081- _71_ 120 <br /> Matrix Spike(MS)i Matrix Spike Duplicate(MSD) <br /> Sample Spiked 00120527-01 <br /> RunlD Q�001221A 515052 Units ug/L <br /> Analysis Date 12/21/2000 15 11 Ana1,7St JC <br /> Analyte Sample MS MS Result �MS % MSD MSD Result MSD % RPD RPD Low High <br /> Result Spike Recovery Spike Recovery Limit Limit L=t I <br /> Added Added <br /> 1 1-Dichlorcethene _ T NDi� 50E 40; 801 50 391 781 31 141 381 172; <br /> nzene �v- NDE �50 -�_W-52: 104! 501 `T- -51' 102'_ 21 11' 661 1341 <br /> lorobenzene _ -- _ - — - NDI 50,- - 57 -_ 1141 _ 501 _ 551 - _ 110E 41 131 671 1151 <br /> Toluene ND 50 54' 106, 501 511 1001 61 131 591 1251 <br /> chlaroethene ND{� 501 55 __ 1101_- 50� 53 _106'1 41 141 _61 I 1341 <br /> Wteirs ND/U-Not Defected at the Reporting Limit MI- Matrix Interference <br /> B-Analyte detected In the associated Metnod Blank D-Recovery Unreportable due to Dilution <br /> J - Estimated value between MDL and PQL "-Recovery Outside Advisabie QC Limits <br /> The percent recoveries for QC samples are correct as reported Due to significant figures and 00120503 Page 32 <br /> rounding the reported RPD may differ from the displayed RPD values but is correct as reported 112/01 9 04 00 Ann <br /> I <br />