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u1 y <br /> 1551 Industnal Road <br /> Sequoia San Carl"CA 94070 <br /> (650)232-9600 <br /> Analytical FAX(650)232-9612 <br /> www4equoislabs com <br /> r-Ryan/Geostrategtes(I} Project Tosco(1) <br /> Sierra Court,Suite 3 Project Number Tosco#01205 (Circle K),Lathrop Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 05/13/02 09 26 <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 /> TB-LB L204130-01 Water Sam led 04/29/02 00 00 Received 04/29/02 17 20 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/1 1 2050019 05/09/02 05/09/02 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-Trifluorotoluene 928% 70-130 <br /> MWA (L204130-02)Water Sampled 04/29/02_13 10 Received 04/29/02 17 20 <br /> Purgeable Hydrocarbons as Gasoline 5700 500 u8A 10 2050018 - 05/09/02 05/09/02 EPA 8021B P-02 <br /> Benzene 41 5 0 1. " 1. + <br /> Toluene 390 5 0 It I. + <br /> Ethylbenzene 340 5 0 <br /> Xylenes(total) 2000 5 0 + <br /> Methyl tert-butyl ether ND 50 " <br /> S to a a,a-Trifluorotofuene 909% 70-130 <br /> M_ -2 (L204130-03)Water Sampled 04/29/02 11 55 Received-0_41_29_/02 17 2_0 <br /> Purgeable Hydrocarbons as Gasoline 2000 500 ug/1 10 2050018 05/09/02 05/09/02 EPA 802113 P-02 <br /> Benzene 56 5 0 " " It " " " <br /> Toluene 5 5 5 0 It <br /> ^ <br /> Ethylbenzene 130 5 0 ^ " <br /> Xylenes(total) 30 5 0 <br /> Methyl tert-butyl ether 78 50 " ^ <br /> Surrogate a,a,a-Trifluorotoluene 910% 70-130 ^ ^ <br /> SeW Analytical -San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 2 of 14 <br />