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' HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> ® HOUSTON, TX 77054 <br /> Quality Control Report (713)660-0901 <br /> J <br /> EXXON Company U S A <br /> uP3s4z I <br /> knalysis Volatile Organics by Method 82608 WorkOrder 01120303 <br /> ethod SW8260B Lab Batch 1D R49678 <br /> Method Blank Samples in Analytical Batch <br /> RunID K_01 1 21 26-946530 Units ug/L Lab Sample ID Client Sample ID <br />�nalysis Date 12/13/2001 5 40 Analyst JC 01120303-016 MW 2 <br /> 01120303-05B RW 2 <br /> 01120303-06B RW 4 <br /> Analyte I Resuit IRep Limit 01120303-07B IW 1 <br /> !Methyl tert-bund ether NDI 501 01120303-086 V 3 <br /> 1 Surr 1 2 Dichlcroethane-d4 1 104 W 62-1301 01120303-09B V 2 <br /> Surr 4 Bromaftucrobenzene1 10401 70-130f 01120303-10 B V 1 <br />' 1 Sun-Toluene-ds T ` 10601 74-1221 01120303-11 B UVB MW2 <br /> Laboratory-Control SampllefLC_S1 <br /> RunID K_01 1212B-946529 Units uglL <br /> Analysis Date 12/13/2001 4 42 Analyst JC <br /> Analyte Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit 1 <br /> 1,1-Dlchlaroethene 1 501 421 841 611 145 <br /> 1Benzene 1 501 511 102 761 127 <br /> IChlorobenzene Sol 561 1121 751 130[ <br /> (Toluene µ i 501- 541 1081 761 1251 <br /> ITnchloroethene 501 531 1061 711 1201 <br /> Matrix Spike(MS)/Matrix Spike Duplicate(MSD) <br /> Sample Spiked 01120303-11 <br /> RunID K_01 121213-946537 Units ug1L <br /> Analysis Date 12/13/2001 9 07 Analyst JC <br /> Analyte SampleMS I <br /> MS Result MS % ; MSD MSD Result MSD % ! RPD l RPD Low High <br /> Resuit Spike j Recovery I Spike I Recovery Limit Limit Limit i <br /> Added I Added <br /> 1 1 I <br /> -Dichloroethene ND1 501 461 92 50 441 88 01 41 141 381 1721 <br /> nzene ; 4Z 501 961 108 50 941 1041 41 111 661 1341 <br /> Chlorobenzene NDI 501 621 124` 50 621 124- 1 01 131 67' 1151 <br /> faluene I 11i 501 681 114 50 63i 1041 91 131 59, 125 <br /> ctllorcethene ND1 501 601 120 50 591 1181 21 141 611 134 <br /> ualifiers ND/U -Not Detected at the Reporting Limit MI -Matrix Interference <br /> B -Analyte detected in the associated Method Blank D-Recovery Unreportable due to Dilution <br /> J-Estimated value between MDL and PQL '-Recovery Outside Advisable QC Limits <br />�he percent recoveries for CC Samples are correct as reported Due to significant figures and <br /> ounding the reported RPD may differ from the displayed RPD values but 1s correct as reported 12/19/01 3 49 19 PM <br />