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�A 1 <br /> 1551 Industrial Road <br /> Sequoia San Carlos CA 94070-4111 <br /> 1 4 (650)232-9600 <br /> T-N Analytical FAX(650) 232-9612 <br /> 3ettler-Ryan/Geostrategies(1) Project Unocal(1) Sampled 11/23/99 <br />)747 Sierra Court,Suite D Project Number Unocal SS#0187/Job#280045 Received 11/24/99 <br />)ublin,CA 94568 Project Manager Deanna Harding Reported 12/10/99 <br /> Sample Description: U-1 <br /> Laboratory Sample Number: L911275-02 <br /> Batch Date Date Specific Method/ Reporting <br /> knalyte Number Prepared Analyzed Surrogate Lirruts Limit Result Units Notes* <br /> Sequoia Analytical-_San Carlos <br /> Total Pur eable Hydrocarbons C6-C12 BTEX and MTBE by DHS LUFT <br /> aurgeable Hydrocarbons as Gasoline 9120017 12/3/99 12/3/99 500 ND ug/1 <br /> Benzene " „ 0 500 ND " <br /> Toluene Is 0 500 126 " <br /> Ethylbenzene 0 500 ND " <br /> Kylenes(total) 0 500 101 " <br /> Methyl tent-butyl ether 500 547 " <br /> Surrogate a,a,a-Tnfluorotoluene " 700-130 751 % <br /> Volatile Organic Oxygenated ComRounds by EFA Method 8260A <br /> Ethanol 9110166 11/30/99 12/1199 1000 ND ug/l <br /> rert-butyl alcohol 1. „ 200 ND ” <br /> Piet 1 tert-butyl ether 200 ND " <br /> D opyl ether 200 ND " <br /> Eth ert-butyl ether 200 ND " <br /> r_ert-amyl methyl ether _ "_ _ _ -- 200 _ND T <br /> Surrogate 1 2-Dtchloroethane-d4 760-114 110 % <br /> 0 <br /> Sequoia Analytical- San Carlos *Refer to end of report for text of notes and definitions <br /> Page 3 of 28 <br />