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I HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> ® (7131 6600401 <br />' Quality Control Report <br /> EXXON Company U S A <br /> TM 0137 <br />�nalysls Gasoline Range Organics WorkOrder 01010025 <br /> Method CA GRO Lata Batch ID R27164 <br /> Method Blank Samples in Analytical Batch <br />'unlD HP_U_0101043-523298 Units mg1L Lab Sample ID Client Sample ID <br /> Analysis Date 01/04/2001 10 26 Analyst DL 01010025-01A MW-1 <br /> Analyte Resuit Rep Limit <br /> !Gasoline Range Organics ! NDi 0 0501 <br /> Surr 1 4-Difiucrobenzene I 10301 62-144 <br /> Suri 4-Bromofluombenzene I 8531 44-153 <br />' Laboratory Control Sample(LCS) <br /> RunlD HP_U_010104B-523297 Units mg/L <br /> Analysis Date 01/04/2001 10 01 Analyst DL <br /> Analyte Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit <br /> Gasoline Range Organics ' 1I 072 721 70 130 <br /> Matrix Spike(MS)1 Matrix Spike Duplicate(MSD) <br /> Sample Spiked 01010019-02 <br />' RunlD HP_U_010104B-524050 Units mglL <br /> Analysis Date 01104!2009 17 16 Analyst DL <br /> Analyte Sample MS MS Result MS % MSD MSD Result MSD% RPD RPD Low High <br /> Result Spike Recovery Spike Recovery Limit Limit LIm1t <br /> Added Added <br /> soline Range Organics NDS 091 0 64 707 0 9� 062 69 a 1 871 361 36 160 <br /> 1 <br /> ers ND1U-Not Detected at the Reporting Limit MI-Matrix trlterference <br /> B-Analyte detected in the associated Method Blank D-Recovery Unreportable due to Dilution <br /> J -Estimated value between MDL and POL "-Recovery Outside Advisable QC Limits <br />''he percent recoveries for QC samples are correct as reported Due to significant figures and 01010025 Page 7 <br /> rounding,the reported RPD may differ from the displayed RPD values but is correct as reported 1/9!01 93348 AM <br /> t <br />