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1 <br /> Sequoia Sacramento,CA 95814 <br /> a— ) <br /> FAX Analytical (916916;921-9600 <br /> 921 0100 <br /> www sequoialabs com <br /> i <br /> SECOR international-Rancho Cordova Project TOSCO 11193, Stockton,CA 5306625 <br /> 3017 Kilgore Road,Suite 100 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 07/30/03 13 04 <br /> Gasoline (2-Methylpentane to 1,2,4-Trlmethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> QCTS(S306625-12)Water Sampled 06/27/03 00 00 Received 06/30/03 12 20 <br /> Purgeable Hydrocarbons ND 50 ug/l l 3070114 07/10/03 07/10/03 EPA <br /> 80/5/8021 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a a a-Trifluorolotuene 94% 60-140 " <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated,results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 3 of 18 <br />