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1551 Industrial Road <br /> Sequoia San Carl05,CA 94070-4111 <br /> 4 (650) 232-9600 <br /> (D Analytical FAX(650)232-9612 <br /> Gettler-Ryan/Geostrategies(1) Project: Tosco(2) Sampled: 2122100 <br /> 6747 Sierra Court,Suite D Project Number: UNOCAL SS##11195 Received: 2122100 <br /> Dublin,CA 94568 Project Manager: Deanna Harding Reported: 317100 <br /> Sample Description: M'-2 <br /> Laboratory Sample Number: L002194-03 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-C12 BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 0030012 3/2100 312100 50.0 ND ug/1 <br /> Benzene " " „ 0.500 ND to <br /> Toluene " " 11 0.500 ND if <br /> Ethylbenzene IF <br /> " to 0.500 ND It <br /> Xylenes(total) to " IF 0.500 ND to <br /> Methyl tert-butyl ether " " to 50.0 965 If <br /> Surrogate: a,a,a-Trifluorotoluene If to 70.0-130 83.7 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A <br /> Ethanol 0030008 3/2/00 3/2/00 7140 ND ug/l <br /> Teat-butyl alcohol 714 ND " <br /> Methyl Cert-butyl ether 11 " 14.3 869 " <br /> Di-isopropyl ether 14 " 14.3 ND <br /> Ethyl tert-butyl ether „ " 14.3 ND <br /> Tert-amyl methyl ether It <br /> „ to . 14.3 ND „ <br /> Surrogate: 1,2-Dichloroethane-d4 ” 76.0-114 93.0 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions. <br /> Page 4 of 20 <br />