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1 3i0USTON LABORATORY <br /> Woo INTERCHANGE TEXAS <br /> ORFVE <br /> 7064 <br />' HOUSTON,TEXAS 77G'S1 <br /> ® <br /> (713)660-ft0i <br /> . Quality Control Report <br /> EXXON Company U S A - <br /> 000229-Ki <br /> Analysts Purgeable Aromatics WorkOrder 00030103 <br /> Method SW$021B Lab Batch ID 810246 <br /> Method Blank Samples In Analytical Batch <br /> RUnID HP J 0003o6A-211416 Units ug1L Lab Sample ID Client Sample ID <br /> Analysis Date 03/06/2000 17 24 Analyst CJ 00030103-01A MW-2 <br /> 00030103-02A MW-4 <br /> 00030103-03A MW-5 <br /> Analyte Result Rep Limit 00030103-04A MW-6 <br /> [Benzene 14D 10 00030103-05A MW-7 <br /> Eth benzene ND 10 00030103-06A MW-8 <br />' Meth en-butyl ether ND 10 00030103-07A MW-9 <br /> Toluene ND 10 00030103-0BA MW-10 <br /> rrip-Xviene NDI 10 <br /> o-X ene ND 10 00030103-09A MW-11 <br /> 1XvIenesJoiall NDJ 1 000030103-10A MW-13 <br /> Surr 1,4-Difluorobenzene 960 72-137 00030103-11A IW-1 <br /> Surr 4 Bromotluorobenzene i 03 fi 48 156 <br /> 00030103-12A RW-1 <br /> 00030103-14A UVBMW-1 <br />' 00030103-16A Trip Blank <br /> Laboratory Control Sample(LCS) <br /> RunlD HP_J_000306A-211415 Units ug1L <br /> Analysis Date 03/0612000 12 40 Analyst CJ <br /> Analyte Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit <br /> Benzene 50 44 89; 61 119 <br /> Ethylbenzene( � —�- 50 Y 50 _ 101 70 118 Methyl ter[butyl ether j 50-- _ 45 91, 72 Y_ 128 <br /> (Toluene 50 49 98 65 125 <br /> M p _ -- - - <br /> -Xylene �� 100 100 103 _ 72 116 <br /> o-Xylene 50 51 102 72 117 <br /> Xylenes Total 150 151 1011 72 117 <br /> Matrix Spike(MS)I Matrix Spike Duplicate(MSD) <br /> Sample Spiked 00030103-01 <br /> RunlD HP J 000306A 211435 Units UgIL <br /> Analysis Date 03/06/2000 23 53 Analyst CJ <br /> ' Result I MS/ MSD MSD Result MSD% RPD RPD Low High ry <br /> Analyte 1 Sample :Added <br /> MS es <br /> Result e I Recovery E Spike Recovery Limd Limit Limit <br /> I Added <br /> I ene ND 20 291 142 20 261 127 10 8 21 32 164 <br /> ahfiers NDlU-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 POL <br /> Iyygfpo 2 46 01 PM <br />