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Ste 8 <br /> Sequoia 819 Suite Ave95834 <br /> Sacramento CA 45634 <br /> n H <br /> (916)921 <br /> ,7 1'AX(916)421 0100 <br /> ANIL yl�� <br /> WWW sequoialab5 com <br /> VI LGer-Ryan-Petaluma Project Totico 6961, Stockton,CA S301510 <br /> N McDowell Blvd Ste B2 Project Number NIA Reported <br /> uma CA,94954 Project Manager Dare Vossler 02/06/03 18 15 <br /> Gasoline\BTEXIOxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> VW-7(530151D-01)Water Sampled 01/23/03 10 15 Received 01!23103 14 25 <br /> Benzene 94 5 0 ug/l 10 3020058 02/05/03 02/06/03 EPA 8260B <br /> Toluene 200 5 0 " <br /> Ethylbenzene 160 5 0 <br /> Xylenes(total) 2100 5 0 <br /> Methyl tert-butyl ether ND 20 " <br /> Gasoline(C6-C10) 11000 500 " <br /> Surrogate 12-DCr1-d4 126% 60-140 " <br /> Surrogate Toluene-d8 108% 60-140 <br /> Surrogate 4-BFB 103 % 60-140 <br /> MW-16(5301510-02)Water Sampled 01/23/03 10 22 Received 01/23/03 14 25 <br /> Benzene 29 050 ugll 1 3020058 02/05/03 02/06/03 EPA 8260B — <br /> Toluene 0 54 050 " <br /> Ethylbenzene 2 7 050 " <br /> Xylenes(total) 6 3 050a W " <br /> ethyl tert-butyl ether 67 2 0 <br /> ethyl <br /> (C6-C10) 120 50 <br /> Surrogate 12-DCA-d4 119% 60-140 <br /> Surrogate Toluene-d8 103% 60-140 <br /> Surrogate 4-BFB 99% 60-140 " <br /> Sequoia Analytical- Sacramento The results in this report cipph to the samples anah�aed in accordance with the chain of <br /> custody document Unless otherwise stated results ar a reported on a wet weight basis <br /> This anah tical?eport must be rep?oduced in its entirety, <br /> Page 3 of 6 <br />