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�/�+'^�''�� • . 819 Striker Avenue,Suite 8 ' <br /> Seuoia Sacramento,)9 95834 <br /> q (916)921-9600 <br /> Analytical wFAX(916) 00 <br /> qWww.sequoialabs.clabs.com I <br /> URS-Sac,Gateway Oaks Project: ARCO 760,Lodi,CA <br /> 2870 Gateway Oaks Dr.,Ste.300 Project Number: 760,Lodi,CA Reported: ' <br /> Sacramento CA,95833 Project Manager: Vernon Elarth 08/27/02 16:38 <br /> Gasoline\BTEX\Oxygenates by EPA method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes ' <br /> Batch 2080229-EPA 5030B IP/TJ <br /> Matrix Spike Dup(2080229-MSD1) Source:S208270-07 Prepared&Analyzed:08/23/02 ' <br /> Methyl tert-butyl ether 0.0406 0.0050 mg/kg 0.0436 ND 93 60-140 0.2 25 <br /> Benzene 0.0248 0.0050 0.0268 ND 93 60-140 0.8 25 <br /> Toluene 0.182 0.0050 0.162 ND 112 60-140 2 25 <br /> Gasoline(C6-C10) 1.84 1.0 2.20 ND 84 60-140 2 25 ' <br /> Surrogate:1,2-DCA-d4 0.0437 0.0500 87 60-140 <br /> Surrogate:Toluene-d8 0.0533 0.0500 107 60-140 <br /> Surrogate:4-BFB 0.0507 0.0500 101 60-140 ' <br /> I <br /> I <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of ' <br /> custody document.This analytical report must be reproduced in its entirety. <br /> Page Page 5 of 7 ' <br />