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Sequoia San Carlos,CA Industrial <br /> (650)232-9600 <br /> Analytical <br /> nalytical FAX(650)232-9612 <br /> Gettler-Ryan/Geostrategies(1) Project: Tosco(2) Sampled: 2122100 <br /> 6747 Sierra Court,Suite D Project Number: UNOCAL SS#11195 Received: 2122100 <br /> Dublin,CA 94568 Project Manager: Deanna Harding Reported: 317100 j <br /> Sample Description: MW-10 <br /> .Laboratory Sample Number: L002194-10 <br /> Batch Date Date Specific Method/ Reporting <br /> [Anoyte Number Prepared Analyzed Surrogate Limits Limit Result Units Nates* <br /> Sequoia Analytical-San Carlos <br /> Total Purseable Hydrocarbons!C6-C121.BTEX and MTBE by DHS LUF_T_ <br /> Purgeable Hydrocarbons as Gasoline 0030011 3/2100 312100 50.0 ND ug/1 <br /> Benzene IF <br /> 0.500 ND " <br /> Toluene 0.500 ND <br /> Ethylbenzene IF <br /> 0.500 ND <br /> Xylenes(total) IF <br /> " 0.500 ND " <br /> Methyl ter#-butyl ether 5.00 11.7 " <br /> Surrogate: a,a,a-Trifluorotoluene 70.0-130 75.7 % <br /> Volatile Organic Oxygenated Compounds by EPA Metbod 8260A f <br /> Ethanol 0030008 312100 312100 1000 ND ug/1 <br /> Tert-butyl alcohol IF " " 01. <br /> 100 ND <br /> Methyl tert-butyl ether " 2.00 13.6 " r <br /> isopropyl ether " " " 2.00 ND " <br /> 1, 1 tert-butyl ether 2.00 ND It <br /> Tert-amyl methyl ether IF 2.00 ND „ <br /> Surrogate: 1,2 Diehloroethane-d4 " 76.0-114 95.8 % <br /> E <br /> 3' <br /> Sequoia Analytical-San Carlos *Refer to end of report for teat of notes and definitions. <br /> Page I I of 20 <br />