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I <br /> 1551 Industrial Road <br /> Sequoia San Carlos CA 94070-4111 <br /> 4 (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(]) Sampled 11/23/99 <br /> 6747 Sierra Court,Suite D Project Number Unocal SS#O187/Job#280045 Received 11/24/99 <br /> Dublin,CA 94568 Project Manager Deanna Harding Reported 12/10/99 <br /> Sample Description- NP-2-116 <br /> Laboratory Sample Number L911275-16 <br /> Batch Date Date Specific Method/ Reportmg <br /> Analyte Number Prepared Analyzed Surrogate Limits Lunt Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-.C12 BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9120022 12/6/99 12/6/99 500 450 ug/l 1 <br /> Benzene 0 500 404 <br /> Toluene 0 500 120 " <br /> Ethylbenzene 0 500 10.3 " <br /> Xylenes(total) 0 500 209 " <br /> Methyl tert-butyl ether 500 ND " <br /> Surrogate a a,a-Tnfluorotoluene 700-130 109 <br /> Volatile Organic Oxv enated Compounds by EPA Method 8260A <br /> Ethanol 9120029 12/7199 12/7/99 1000 ND ug/1 <br /> Tert-butyl alcohol 200 ND '. <br /> Methyl tert-butyl ether 200 ND <br /> Dropyl ether 200 ND " <br /> E ert-butyl ether 2 00 ND <br /> Teri-amyl methyl ether_ _ 200 ND <br /> Surrogate 1 2-Dichloroeihane-d4 760-114 948 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 17 of 28 <br />