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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> ® HOUSTON TEXAS 77054 <br /> . Quallty Control Report '»I sea oso3 <br /> ' EXXON Company U S A <br /> UP3708 1 <br /> Analysis Purgeable,Aromatics <br /> ethod SW80218 WorkOrder 01050390 <br /> Lab Batch ID R35635 <br /> Method Blank Samples in Analytical Batch <br /> RunfD VARD 010521A 678845 Units <br /> � <br /> uglL nafysis Date 05/21/2001 11 55 Analyst DIL Lata SAID Client Sam le 1D <br /> 01050390-02A MW-4 <br /> 01050390-03A MW-5 <br /> 01050390-04A MW-6 <br /> analyteResult Rep Limit 01050390-05A MW-7 <br /> Benzene _ — 01050390-06A <br /> Eth Ihenzene_ _ �`-- - --- NDI�050 MW-8 <br /> Toluene _ - - - - - -- ND 1 05o, 01050390-07A MW-9 <br /> No ` 0 50 01050390-08A MW-10 <br /> Di 0 50 <br /> - <br /> o-�lene NND- <br /> 0 501 01050390-09A VEW-1 <br /> Xylenes Total -- - <br /> Surr 1 4Dl luarobenzene <br /> - - -- - -- ND 0 501 W <br /> 01050390-10A VE -3 <br /> _S 97 3 72 137 <br /> urr 4eromofluorobenzene <br /> -- <br /> Laboratory Control Sample(LCS1 <br /> RUnID ARD_010521A678844 Units uglL <br /> Analysis late 05,21/2001 1 04 Analyst DL <br /> Ile <br /> Analyte Spike Result Percent Lower Upper <br /> _ Added Recovery Limit Lfmit <br /> Benzene _ 50 - -- — <br />' 1 th iloonzene - - - -- - - - - -_— 105' - 70_ 130 <br /> Toluene <br /> 50 52, 105_ 701 130 <br /> _ - - - - 501 _ 52 - - - 104 70 130 <br /> Fn p-Xyiere - - - - 100, 10QI 101_ 70 <br />' D_Xylene - - - - - - - - S01 _ -52' -= 104' - 130 <br /> - <br /> Xylenes Total 701 130 <br /> - _ - - - - - - 150 152 101 701 1301 <br /> Matrix Spike iI i Matrix S Ike Du Iicate MSD <br /> Sample Spiked 01050390-02 <br /> t RunlD VARD_010521A-678846 Units <br /> ug/L <br /> Analysis Date 05/21/2001 12 49 Analyst DL <br /> Analyte - - Sample �MS MS Result MS % MSID MSD Result MSD °a RFD <br /> Result Spike Recovery Spike Recove RPD Law High <br /> Added I Added rY Limit Limit Limit <br />[-IyJbenzene <br /> Zene — -- -- --i�— <br /> - - - - - - Np - 20f -- --- -201— 100 207 -201_ _` 200 - - --- <br /> 98 3 21 32 142 <br />"oluene - - - — _ 201 gg 3 Z0� 20 998 0 507201 <br /> 19 52 142 <br /> P-Xylene - - - - - l _ <br /> No, 40 ----- 201 - 102 201 201 _ 98 3 3 35- 20 38 158 <br /> ylene - - - - - - - — _ 38 95 8 40f 38 96 1 0 310 17 53 1441 <br /> ND 20 -- — 20 - 98 201 -- --- 201 - -- - - - <br /> _ __ _ _ 98 9)0192' 18 53 1431 <br /> ers ND/LJ Not Detected at the Reporting Limit <br /> B Analyte detected in the associated Method Blank MI - Matrix Interference <br /> Unreportable <br /> -- - <br /> 1 - Estimated value between MDL and PQL D-Recovery Unre ortable due to ❑elution <br /> The percent recoveries for QC samples are correct as reported Due¢O significant figures and <br /> [side Advisable QC Limits <br /> rounding the reported RPD may differ from port <br /> the displayed RPD values but is correct as reed <br /> I11 J7050396 p8ge <br /> 5j23r01 d 18 15 Aly[ <br />