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1551 Industrial Woad <br /> Sequoia &-i'Carlos, <br /> 070111 <br /> 650)2322-4 <br /> , 4 FAX(650)232-9612 <br /> Analytical www.sequolalabs.com <br /> Getty Ryan/Geostrategies(l) Project: Tosoo(2) Sampled: 8/28/00 <br /> 6747 Sierra Court,Suite J Project Number. Unocal SS#11195/16500 So.Interstate I-5,LathRpeived: 8128100 <br /> Dublin CA 94568 Project Manager. Deanna Hardin Reported: 9114/00 <br /> Sample Description: MW4 <br /> Laboratory Sample Number: 1,008195-05 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Seauola Analytical-San Carlos <br /> Total Pori!eable H drocarbons C6-02 BTEX and MTBE by DHS LAW <br /> Purgeable Hydrocarbons as Gasoline 0090037 918100 918100 50.0 61.2 ug/l <br /> Benzene " IF <br /> " 0.500 1.53 " <br /> Toluene " " " 0.500 ND It <br /> Ethylbenzene 0.500 ND <br /> Xylenes(total) 0.500 ND " <br /> Methyl tert-butyl ether IF " 5.00 27.6 " <br /> Surrogate. a,a,a-Trifluororoluene " 70.0-130 115 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260B <br /> Tent butyl alcohol 0080144 8130100 8130/00 100 ND ugll <br /> Methyl tert butyl ether it2.00 29.7 " <br /> Di-isopropyl ether " " IF 2.00 ND IF <br /> yl tert butyl ether IF2.00 ND " <br /> ---• _amyl methyl ether IF 2.00 ND " <br /> $'arrogate: 1,2-D1ch10 v thane-d4 " " OF 76.0-114 106 <br /> Sequoia Analytical-Sen Carlos *Refer to end of report f 6r text of notes and definitions. <br /> Page 6 of 20 <br />