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HOUSTON LABORATORY <br /> 8880 DRIVE <br /> HOUSTON,TEXAS 7 <br /> 7OS4 <br /> ® q13)660-0901 <br /> Quality Control Report <br />' EXXON Company U S A <br /> Analysis Gasoline Range Organics WorkOrder 99120311 <br /> ethod CA GRO Lab Batch ID R6031 <br /> Method Blank Samples in Analytical Batch <br /> RunlD HP_N_991211B 128455 Units mg/L Lab Sample ID Client Sample ID <br />�nalysis Date 12111/1999 22 20 Analyst WR 99120311-01A MW-2 <br /> 99120311-02A MW-4 <br /> 99120311-03A MW-5 <br />' 99120311-04A MW-6 <br /> Analyte Result Rep Limit <br /> 99120311-05A IW-1 <br /> Gasoline Range Or anirs NO 0 050 <br /> Surr 1 4 Difluorobenzene _ 1 10001 62-144 99120311-06A RW-1 <br /> Surr 4-Bromoluorobenzene _ 99 71 44-153 99120311-07A RW-2 <br />' 99120311-08A UVBMW-1 <br /> 99120311-09A UVBMW-2 <br /> 99120311-10A MW-7 <br />' 99120311-11 A TB <br /> Laboratory Control Sample(LCS� <br />' <br /> RunlD HP_N_991211B-128451 Units mglL <br /> Analysis Date 1211111999 20 21 Analyst WR <br /> lieAnalyte Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit <br /> Gasoline Range Organics 1 085 85 64 131 <br />' Matrix Spike MS 1 Matrix S ike Duplicate MSD <br /> Sample Spiked 99120311-02 <br /> RunlD HP_N_9912118-128452 Units mg/L <br />' Analysis Date 1211111999 21 33 Analyst WR <br /> Analyte Sample MS MS Result MS% MSD MSD Result MSD% RPD RPD Low High <br /> Result Spike Recovery Spike Recovery Limit Limit Limit <br /> Added i Added <br /> _ I <br /> Gasoline Range Organics 033 09 1 4 114 09 1 3 110 395 36 36 160 <br />' Qualifiers NDIU-Not Detected at the Reporting Limit `-Recovery Outside Advisable QC Limits <br /> B-Analyte detected in the associated Method Blank D-Recovery Unreportable due to Dilution <br /> J-Estimated value between MDL and PQL 99120311 Page 15 <br /> 12122199 3-00 55 PM <br />