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4 ' Sequoia dustnRoad <br /> San Carlosios,,CA 94070-4111 <br /> (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> i <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(l) 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. NP-1-65 <br /> Laboratory Sample Number L911275-12 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Lumt Result Units Notes* <br /> Senuoia Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-C 121,BTEX and MTH E by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9120021 1216199 1216199 10000 50400 ug/l 1 <br /> Benzene " 100 2570 <br /> Toluene to100 8240 " <br /> Ethylbenzene to " It 100 1440 to <br /> Xylenes(total) " " to 100 7070 " <br /> Methyl tert-butyl ether " " " 1000 ND " <br /> Surrogate a,a,a-Trifluorotoluene of 700-130 122 <br /> Volatile Or anis Ory enated Compounds by EPA Method 8260A <br /> Ethanol 9120029 12/7/99 1217199 50000 ND ug/l <br /> Tert-butyl alcohol 10000 ND <br /> Methyl tert-butyl ether 100 ND <br /> whip <br /> ropy/ether " " 100 ND <br /> ert-butyl ether 100 ND <br /> Tert-amyl methyl ether l OQ _ND__ <br /> Surrogate 1 2-Dichloroethane-d4 760-114 93 6 <br /> 0 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 13 of 28 <br />