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t 1551 Industrial Road <br /> Sequoia San Carlos, CA 94070-4111 <br /> 4 (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> • <br /> Gettler-Ryan/Geostmtegies(1) Project Unocal(1) Sampled 11/23/99 <br /> 6747 Sierra Court,Suite D Project Number Unocal SS#0187/Job#280045 Received 11/24/99 <br /> Dublin,CA 94568 Project Manager Deanna Harding Reported 12/10/99 <br /> Sample Description U-7 <br /> Laboratory Sample Number- L911275-08 <br /> Batch Date Date Specific Method/ Reporting <br />�Analyte Number Pr aced Analyzed Surrogate Limits Lima Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Puraeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFr <br /> Purgeable Hydrocarbons as Gasoline 91200I5 12/3199 12/3/99 500 ND ug/l <br /> Benzene " It <br /> " 0 500 ND " <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND " <br /> Methyl tert-butyl ether 500 ND " <br /> Surrogate a a,a-Tnfluorotoluene 700-130 114 % <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A <br /> Ethanol 9120004 12/1/99 12/1/99 1000 ND ug/l <br /> Tert-butyl alcohol 200 ND " <br /> Methyl tert-butyl ether 200 ND " <br /> propyl <br /> ether " 200 ND <br /> rt-butyl ether 200 ND <br /> Tert-amyl methyl ether _ _ _" _ _ 200 _ND__ <br /> Surrogate 1 1-Dichloroethane-d4 760-114 114 % <br /> 0 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 9 of 28 <br />