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HOUSTON LABORATORY <br /> 8880 INTERCHANGENGE DRIVE <br /> ® HOUSTON TX 77054 <br /> • Quality Control Report (713) 660 0901 <br />' EXXON Company U S A <br /> U P 3708 1 <br /> Analysis Volatile Organics by Method 82608 WorkOrder 01080655 <br /> ethod SW8260B Lab Batch ID 842463 <br /> Method Blank Samples in Analytical Batch <br /> RunID M 010828A 810231 Units ug/L <br /> Lab Sample !D Client Sample ID <br />�nalysis Date 08/28/2001 9 30 Analyst JC 01080655-01 B MW-1 <br /> Analyte _ Result Rep Lim—It <br /> Mettlyl tert butyl ether _ Ni _ 5 0 <br /> Surr 1 2 Dichloroethane d4 _ ___ T 102 01 62 1191 <br /> Surr 4 Bromotluorobonzene T 104 0, 78-1231 <br /> Sorr Toluene d8V -- <br /> _ 104 Or 74 122' <br /> Laboratory Control Sample(i <br />' RunlD M_010828A 810230 Units uglL <br /> Analysts Date 08/28/2001 8 39 Analyst JC <br />' Analyte Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit <br /> 11 Drchloroethene - -- -- -- 1 <br /> - —_ _ - - 50 41 82 61, - 145 <br /> 127 <br /> Benzene 50 461 92' 76 <br /> Chlorobenzene _ 501 46 92 75 130 <br /> Toluene 50 45 90 76 125 <br />' Trichloroethene 50 46 92 71 1201 <br /> Matrix Sprke(MS)/Matrix Spike Duolicate(MSD) <br /> Sample Spiked 01080878-04 <br /> RunlD M_010828A 810236 Units ug/L <br /> Analysis Date 08/28/2001 11 23 Analyst JC <br /> Analyte Sample 1 MS MS Result MS no MSD MSD Result MSD°° RPD RPD Law I High <br /> Result Spike Recovery Spike Recovery Lima Limit Lima <br /> Added , Added <br /> rzenei-Dichloroethene ND 1001 82 82� 100 78' 780 5 14 3811 172 <br /> _ N D 100-- - - g2 — 92 1001 --- —90 90 0 2 1 1 66 <br /> 1341 <br /> obenzene -_ - - -- ND 100' 93 93f 100931 93 01 01 13 67 1151 <br /> _oluene ND 1001 37 87 1001 86, 860 1 131 591 125, <br /> chloroethene -1 - 100' 91 91L 1001 - - _ 881 -88 0' 3 -14 61 1341 <br />�rs ND/LJ - Not Detected at the Reporting Limit MI Matrix Interference <br /> I B Analyte detected In the associated Method Blank D Recovery Unreportab}e due to Diiution <br /> J- Estimated value between MDL and POL ' Recovery Outside Advisable CC Limits <br /> The percent recoveries for QC samples are correct as reported Due to significant figures and <br />�aunding the reported RPD may differ from the displayed RPD values but is correct as reported <br /> 8l3tJOt 122511 PM <br />