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1551 Industrial Road <br /> Sequoia �'Carlos.C50904-91600 <br /> 15) FAX(650)232-%12 <br /> rAnalytical www scquoialabs com <br /> Gettler-Ryan/Geostrategies(1) Project Tosco(5) Sampled. 6126100 <br /> 6747 Sierra Court,Suite J project Number Tosco(Unocal)SS#6981 Received 6/27/00 <br /> Dublin,CA 94568 Project Manager Deanna Hardin 7112/00 <br /> Sample Description: MW-2 <br /> Laboratory Sample Number: L006236-03 <br /> Batch Date Date Specific Method/ Reporting <br /> Anal Number Pwpared Anal SurroM Lnmits Lumt Result Units Notes" <br /> Seauols Analytical-San Carlos <br /> Total PurZeable Rydrocarbons W§&12),BTEX and MTBE by DHS LUFr <br /> Purgeable Hydrocarbons as Gasoline 0070020 7/6/00 717100 500 489 ugll 1 <br /> Benzene 0 500 38.0 " <br /> Toluene 0 500 3.00 " <br /> Ethylbenzene " 0 500 ND " <br /> Xylenes(totd) 0 500 532 " <br /> Methyl tert-butyl ether " 5 00 107 " <br /> Surrogate. a,a,a-Tn1luorotoluene " " " 700-130 130 % <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A <br /> Teri butyl alcohol 0070023 717100 717/00 100 ND ug/l <br /> Methyl tert-butyl ether 200 87.9 " <br /> M-isopropyl ether " 200 ND " <br /> butyl ether 200 ND " <br /> �Y <br /> 1 methyl ether " " " 200 ND " <br /> Surrogate 1,2 Dichloroethane-d4 " 760-114 103 % <br /> Soijuoia Analytical-San Carlos - 'Refer to end of reportjbr text of notes and definitions <br /> Page 4 of 30 <br />