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1551 Industrial Road <br /> Sequoia $an Carlos CA 9460 <br /> (654)232-96000 <br /> vW Analytical wFAX <br /> ww eqwww <br /> 0)232-9612 <br /> uoialabs win <br /> ler-Ryan/Geostrategies(I Project Tosco(1) <br /> Sierra Court, Suite J Project Number Tosco(Unocal)SS46981,Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 12/2710109 39 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-11 (L1 1208--07)Water Sampled 12/12/01 12 10 Received 12/13/01 19 40 <br /> Purgeable Hydrocarbons as Gasoline ND 50 u8A 1 1120079 12/20/01 12/20/01 EPA 8021B <br /> Benzene ND 050 <br /> Toluene ND 050 ^ ^ <br /> Ethylbenzene ND 050 " ^ " <br /> Xylenes(total) ND 050 ^ <br /> Methyl tert-butyl ether ND 5 0 " ^ <br /> Surrogate a,a,a-Triuorotoluene 963% 70-130 " <br /> MW-14 (L1 12085-08)Water Sampled 12/12/01 12 50 Received 12/13/01 19 40 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ugA 1 1120079 12/20/01 12/20/01 EPA 8021E <br /> Benzene ND 050 ^ " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 ^ <br /> Methyl tert-butyl ether 47 5 0 " <br /> ate a,a,a-Tr�uorotoluene 928% 70-130 " <br /> -15 (L112085-09)Water Sampled 12/12/01 11 25 Received 12/13/01 19 40 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ugA 1 1120079 12/20/01 12/20/01 EPA 8021B <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether 43 5 0 " <br /> Surrogate a a a-Tr{Jluorotoluene 981 % 70-130 " <br /> to Analytical-San Carlos The results to 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 4 of 22 <br />