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819 Striker Avenue,Suite 8 ' <br /> IN 5) Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> ') Analvtical FAX(916)921-0100 <br /> www.sequoiWabs.com <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 08/22/02 17:33 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> PB-10-N(5208245-10)Soil Sampled:08/20/02 13:44 Received:08/20/02 15.56 R-05 <br /> Tert-butyl alcohol ND 5.0 mg/kg 2 2080219 08/22/02 08/22/02 EPA 8260B <br /> Methyl tert-butyl ether ND 0.50 " <br /> Di-isopropyl ether ND 0.50 " <br /> Ethyl tert-butyl ether ND 0.50 <br /> Tert-amyl methyl ether ND 0.50 " <br /> Surrogate:1,2-DCA-d4 87% 60-140 " <br /> r <br /> r <br /> r <br /> r <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document. This analytical report must be reproduced in its entirety. <br /> Page Page 2 of 4 <br />