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S <br /> i1 1 <br /> 1551 Industnal Road <br /> Sequoia San Carlos CA 94070 <br /> (i) (650)232-9600 <br /> '%W23Analytical FAX <br /> 2-9612 <br /> www scquoiequoialabs corn <br /> Icr-Ryan/Geostrategies(1) Project Tosco(1) <br /> 7 Sierra Court,Suite J Project Number Tosco#01205(Circle K),Lathrop,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 02/14/02 12 09 <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-6(L201127-07)Water Sampled 01/29/02 13 50 Received 01/30/02 08 55 <br /> Purgeable Hydrocarbons as Gasoline 31000 5000 ug/I 100 2020020 02/06/02 02/06/02 EPA 8021B P-02 <br /> Benzene 250 50 " <br /> Toluene 3300 50 " <br /> Ethylbenzene 2300 50 " <br /> Xylenes(total) 8600 50 " <br /> Methyl cert-butyl ether 580 500 " <br /> Surrogate a,a,a-Trifluorotoluene 115% 70-130 " <br /> MW-7(L201127-08)Water Sampled 01/29/02 15 40 Received 01/30/02 08 55 <br /> Purgeable Hydrocarbons as Gasoline 23000 5000 ug/l 100 2020020 02/06/02 02/07/02 EPA 8021B P-02 <br /> Benzene 84 50 " <br /> Toluene 1300 50 " <br /> Ethylbenzene 1400 50 " <br /> Xylenes(total) 5100 50 " <br /> Methyl tert-butyl ether ND 500 " <br /> V-gatea a a-Tri luorotoluene 107% 70-130 " <br /> 8(L201127-09)Water Sampled 01/29/02 1.0 55 Received 01/30/02 08 55 _ <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 2020020 02/06/02 02/07/02 EPA 8021B <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 5 0 " <br /> Surrogate a a,a-Trifluorotoluene 107% 70-130 " <br /> to Analytical - San Carlos They esults in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical)eport must be rept'oduced to its entry ety <br /> Page 4 of l l <br />