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1551 Industrial Road <br /> Sequoia San Carlos CA 94070 <br /> 4D (650)232 9600 <br /> Aw Analytical FAX(650)232 <br /> 9612 <br /> www scqu=labs cl)m coni <br /> Gettler-Ryan/Geostraleptes(1) Project TOSCO(1) <br /> 6747 Sierra COUM Suite j Project Number Tosco(Former BP)SS411 192, Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 11/21/01 13 29 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B <br /> -- -- Sequoia Analytical - San Carlos- ---- - --- --- <br /> Reportmg <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(L1 11063-01)Water Sampled 11/09/01 00 00 Received 11/09/01 19 35 <br /> Purgeable Hydrocarbons as Gasoline ND -- 50 ug/I 1 1110065 11/16/01 11/16/01 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 50 <br /> Surrogate a a,a-Trsf7uorotoluene 105% 70-130 " <br /> MW-1 (L1 1 1 063-02)Water Sampled 11/09/0) 16 12 Received 11/09/01 19 35 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/1 1 1110066 11/16/01 11/16/01 EPA 8021B <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl Cert-butyl ether 760 50 10 M-04 <br /> Surrogate a,a,a-TriJluorotoluene 998% 70-130 " <br /> MW-3(L1 13063-03)Water Sampled 11/09/01 16 51 Received 11/09/01 19 35 <br /> Purgeable Hydrocarbons as Gasoline ND 5000 ug/l 100 1110073 11/19/01 11/19/01 EPA 8021B <br /> Benzene ND 50 " <br /> Toluene ND 50 <br /> Ethylbenzene ND 50 " <br /> XvIenes(total) ND 50 " " <br /> Nltthyl tert-butyl ether 140000 5000 1Q00 M-04 <br /> Surrogate a,a a-Trifluorotoluene 817% 70-130 " <br /> Sequoia Analytical -San Carlos The results in this report apply to the samples analysed in accordance with the chain is <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 2 of 19 <br />