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Sequoia los, A 94070-4111 <br /> 40n0l Road <br /> San Carlos, CA 94070-41 I I <br /> 4 (650) 232-9600 <br /> Analytical FAX(650)232-9612 <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(1) Sampled 11/23/99 <br /> 6747 Sierra Court,Suite D Project Number Unocal SS#OI 87/Job#280045 Received 11/24/99 <br /> Dublin,CA 94568 Project Manager Deanna Harding Reported 12/10/99 <br /> Sample Description U-9 <br /> Laboratory Sample Number L911275-10 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Nvtes* <br /> Senuols Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-C12 BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9120015 1213/99 12/3/99 500 ND ug/1 <br /> Benzene " " " 0 500 ND It <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 700-130 109 % <br /> Volatile Organic Oxygenated C_om_pounds by EPA Method 8260A <br /> Ethanol 9120029 12/7199 12/7/99 1000 ND ugn <br /> Tert-butyl alcohol 200 ND " <br /> M1 tert-butyl ether 200 ND,Ak " <br /> ropy l ether 200 ND " <br /> Et tert-butyl ether 200 ND " <br /> T_ert-amyl methyl ether_ _ _ _ _ 200 ND <br /> Surrogate 1,2-Dichloroeihane-d4 " 760-114 954 % <br /> • <br /> Sequoia Analytical-San Carlos *Refer to end of report far text of notes and definitions <br /> Page i I of 28 <br />