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1551 Industrial Road <br /> Sequoia San Carlos,CA 94070-4111 <br /> , 4 (650)232-9600 <br /> -5)- Analytical FAX(650)232-9612 <br /> Gettler-Ryan/Geostrategies(1) Project: Tosco(2) Sampled: 2/22100. <br /> 6747 Sierra Court,Suite D Project Number. UNOCAL SS#11195 Received: 2/22/00 <br /> Dublin,CA 94568 Project Manager: Deanna Harding Reported: 3/7/00 <br /> Sample Description: NIW-3 <br /> Laboratory Sample Number: L002194-04 <br /> Batch Date Date Specific Method/ Reporting <br /> lAnalyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Senuoia Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-C12 BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 0030003 3/l/00 3/1/00 50.0 312 ug/l 1 <br /> Benzene " " It 0.500 6.34 " <br /> Toluene " It <br /> " 0.500 ND " <br /> Ethylbenzene 1 <br /> " " 0.500 3.72 " <br /> Xylenes(total) " if " 0.500 12.2 " <br /> Methyl tert-butyl ether 0030010 3/2/00 3/2/00 100 3490 " <br /> Surrogate: a,a,a-Trifluorotoluene 0030003 . 3/1100 3/1/00 70.0-130 965 % <br /> Volatile Organic Oweenated Compounds by EPA Method 8260A <br /> Ethanol 0030008 3/2/00 3/2/00 25000 ND ug/1 <br /> Tert-butyl alcohol " " 2500 ND It <br /> Methyl Cert-butyl ether 41 " " .50.0 3510 Ita> it ++ 50.0 ND 1t <br /> opropyl ether 50.0 ND <br /> E yl tert-butyl ether 11 it ' <br /> Tert-amyl methyl ether " " 50.0 ND <br /> Surrogate: 1,2-Dichloroethane-d4 " or 76.0-114 94.0 % <br /> Sequoia Analytical-San Carlos '"Refer to end of report for text of notes and definitions. <br /> Page 5 of 20 <br />