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Sequoia los. Industrial Road <br /> San C�ulosCA 94070-4111 <br /> (650)232-9600 <br /> DAnalytical FAX(650) 232-9612 <br /> Gooier-Ryan/Geostrategies(1) Project Unocal(]) Sampled 9116199 <br /> 6747 Sierra Court,Suite D Project Number Unocal SS#5098 Received 9116/99 <br /> Dublin,CA 94568 - Project Manager'f Deanna HardingReported 9/30199 - <br /> Sample Desenpitioa: MW-17 <br /> Laboratory Sample Number: - - - L909147-11a s - - <br /> Batch Date Date Specific Method/ Reporting <br /> lAnalyte Number Prepared Anal ed Surrogate Limits Limit Result Units Notes* <br /> Seauola Analytical-San Carlos <br /> Total PurQeable Hydrocarbons(C6-C12)and BTEX by DHS LUFr <br /> Purgeable Hydrocarbons as Gasoline 9090131 9128199 9128199 500 ND ug/1 <br /> Benzene 0 500 ND " <br /> Toluene 0 500 0 680 " <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) _ 0 500 0 957 " <br /> Surrogate a,a a-Trifluorotoluene 600-140 92 2 % <br /> • <br /> L. <br /> r r <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 12 of 30 <br />