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1551 Industrial Road <br /> Sequoia San Carloslos CA 94070 <br /> a) <br /> Analytical (650)232-961 <br /> qqWFAX(650)232-961212 <br /> www.scgtioialabs.com <br /> Gettler-Ryan/Geostrategies(I) Project: Tosco(1) f <br /> 6747 Sierra Court, Suite J Project Number: Tosco#11195,Lathrop,CA Reported: <br /> Dublin CA,94568 Project Manager: Deanna Harding 12/10/01 19:11 <br /> —f <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEXIMTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB L111147-01 Water Sampled: 11/21/0100:00 Received: 11/2110118:15 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 1120009 12/04/01 12/04/01 EPA 8021B <br /> Benzene ND 0.50 " <br /> Toluene <br /> ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 <br /> Methyl tert-bury]ether ND 5.0 " <br /> Surrogate:a,a,o-Trif uorotoluene 96.3% 70-130 " <br /> MW-1 (L111147-02)Water Sampled: 11/21/01 15:15 Received: 11/21/01 18:15 <br /> Purgeable Hydrocarbons as Gasoline ND 120 ugll 2.5 1120008 12/04/01 12/04/01 EPA 8021E <br /> Benzene ND 1.2 " <br /> Toluene ND 1.2 " <br /> Ethylbenzene ND 1.2 " <br /> Xylenes(total) ND 1.2 " <br /> Methyl tert-butyl ether 1600 120 25 <br /> Surrogate:a,a,a-Triuorotoluene 107% 70-130 <br /> MW-2(LI 1]147-03)Water Sampled: 11/21/01 14:45 Received: 11/21/01 18:15 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 1120009 12/04101 12104/01 EPA 8021B <br /> Benzene <br /> ND 0.50 <br /> Toluene <br /> ND 0.50 " <br /> " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Methyl tent-butyl ether. 210 5.0 " <br /> Surrogate:a,a,a-Trifluorotoluene 99.9% 70-130 " <br /> I <br /> i <br /> Sequoia Analytical - San Carlos The results in this report apply to the samples analyzed in accordance i>>ith the chain of;'<^ <br /> custody document. This analytical report taust be reproduced in its entirety. <br /> E <br /> Page 2 of 18 <br /> Ek <br /> I <br />