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1551 Industrial Road <br /> ID <br /> Sequoia San Carlos, CA 94070-4111 <br /> Analytical (650) 232-9600 <br /> 1. FAX(650) 232-9612 <br /> Gettier-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: 317/00 <br /> Sample Description: MW-1 <br /> Laboratory Sample Number: L002194-02 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Puraeable Hydrocarbons(C6-C121.BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 0030012 3/2/00 3/2/00 50.0 ND ugll <br /> Benzene IF „ If <br /> 0.500 . ND <br /> Toluene IF <br /> IF <br /> 0.500 ND ON <br /> Ethylbenzene to IF <br /> 0.500 ND to <br /> Xylenes(total) No " to 0.500 . ND " <br /> Methyl tert-butyl ether to " IF <br /> 50.0 2060 IF <br /> Surrogate. Q a,a-Trifluorotoluene if if " 70.0-130 98.2 % <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A <br /> Ethanol 0030008 3/1100 3/1100 10000 ND ug/l. <br /> Tert-butyl alcohol " " If <br /> 1000 ND " <br /> Methyl tert-butyl ether To " " 20.0 1900 " <br /> ,z,`_.y,sopropyl ether IF 11 it 20.0 ND <br /> ��=�')tett-butyl ether IF <br /> It 20.0 ND It <br /> Tert-amyl methyl ether to 11 „ 20.0 ND it <br /> Surrogate: 1,2-Dichloroethane44 if it It76.0-114 92.2 % <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and defrnidons. <br /> Page 3 of 20 <br />