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1551 Industrial Road <br /> • San Cuios,CA 94070-4111` <br /> Sequoia (650)232-9600 <br /> FAX(650)232-%12 <br /> Analytical '"""'" ''�' `�" <br /> Cetticr-Ryan/Geost utegies(1) Project Tosco(2) Sampled: 8128100 <br /> 6747 Sierra Court,Suite J Project Number. Unocal SS# 11195/16500 So.Interstate I-5,Lathlgeived: 8128100 <br /> Dublin,CA 94568 Project ManLLDean=Hardin : 9/14/00 <br /> Sample Description: MW-1 <br /> Laboratory Sample Number: L008195-02 <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 Pur eable Hydrocarbons C6-C12 BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbon_s as Gasoline 0090020 916/00 916100 50.0 100 ug/l 1 <br /> Benzene 0.500 ND ° <br /> Toluene 0.500 ND " <br /> Ethylbenzene 0.500 ND " <br /> Xylenes(total) 0.500 ND <br /> Methyl tert-butyl ether 5.00 274 " <br /> Surmgate: a,a.o-Yrii luoratoluene " " 70.0-130 92.4 % <br /> Volatile Organic Oxygenated Com ounds by EPA Method 9260B <br /> Tert-butyl alcohol 0080132 8130100 8130/00 250 ND ug/l <br /> Methyl tert-butyl ether " " " 5.00 314 It <br /> Di-isopropyl ether n „ n 5.00 ND " <br /> Ethyl Cert-butyl ether " " " 5.00 ND <br /> Tert-amyl methyl ether n 5.00 ND <br /> Surrogate: 1,2-Dichloroethane-d4 76.0-114 105 % <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions.- <br /> Page 3 of 20 <br /> r�i " <br />