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} <br /> 5 <br /> 1 <br /> 919 Sinker Ave Ste g <br /> Sequoia Sacramento <br /> 5834 <br /> (916)92199600 <br /> Analytical FAX(916)921 0100 <br /> FAX <br /> sequoialabs cum <br /> Gettler-Ryan-Petaluma Project Tosco 11192,Stockton,CA S304545 <br /> 1364 N McDowell Blvd Ste B2 Project Number N/A Reported <br /> Petaluma CA,94954 Project Manager Dave Vossler 05/06/03 18 21 <br /> Gasollne\BTEXIOxygenates by EPA method 8260B <br /> Y <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> - MW-3 (S304545-01)Water-Sampled 04/22/03 09 50-Received 04122103-15 33---- —----- -- ------ -- _ -- - - <br /> Benzene ND 050 ugll 1 3050030 05/02/03 05/02/03 EPA 9260B <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether 15 2 0 <br /> Gasoline(C6-C10) 220 50 11C 19 <br /> Surrogate Toluene-d8 101% 60-140 " <br /> Surrogate 4-BFB 90% 60-140 " <br /> MW-4(5304545-02)Water Sampled 04/22/03 10 03 Received 04/22/03 15 33 <br /> Benzene ND 0 50 ug/l 1 3050030 05/02/03 05/02/03 EPA 8260B <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 <br /> Xylenes(total) ND 050 " <br /> _w Methyl tert-butyl ether-..-- -_ _-_— _r Z_1____ _-_ -2 0_-_ <br /> Gasoline(C6-C10) ND 50 " <br /> Surrogate Toluene-d8 102% 60-140 <br /> Surrogate 4-3FB 7.5% 60-140 " <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed to accordance with the Chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 3 of 6 <br />