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Carlos, <br /> Industrial Road <br /> 4 4D Sequoia <br /> San Carlos,CA 94070-4111 <br /> /� <br /> (650)232-9600 <br /> q`r Analytical FAx(650)232-96]2 <br /> Gettler-Ryan/Geostrategies(1) Project: Tosco(2) Sampled: 2/22/00 <br /> 6747 Sierra Court,Suite D Project Number: UNOCAL SS#11195 Received: 2/22/00 <br /> Dublin,CA 94568 Project Manager: Deanna Harding Reported: 3/7100 <br /> Sample Description: AM-4 <br /> Laboratory Sample Number: L002194-05 <br /> Batch Date Date Specific Method/ Reporting <br /> lAnalyte Number . prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Seguoia Analytical-San Carlos <br /> Total Purges bleA drocarbons C6-02 BTEX and MTBE by DHS LuEr <br /> Purgeable Hydrocarbons as Gasoline 0030003 3/1/00 3/l/00 50.0 120 ugll 2 <br /> Benzene " " 0.500 1.59 " <br /> Toluene " " 0.500 ND „ <br /> Ethylbenzene it " " 0.500 ND " <br /> Xylenes(total) " if to 0.500 ND It <br /> Methyl tert-butyl ether " " „ 5.00 333 " <br /> Surrogate: a,a,a-Trifluorotoluene " 70.0-130 84.3 % <br /> Volatile Organic Ox enated Compounds by EPA Method 9260A <br /> Ethanol 0030008 3/2/00 3/2/00 3330 ND ug/1 <br /> Tert-butyl alcohol " it 333 ND to <br /> Methyl tert-butyl ether " " " 6.66. 382 to <br /> Di-isopropyl ether " 6.66 ND to <br /> Ethyl tert-butyl ether " " 6.66 ND to <br /> Tert-amyl methyl ether " 6.66 ND to <br /> Surrogate: 1,2-Dichloroethane-d4 " ". 76.0-114 95.8 % <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of now and definitions. <br /> Page 6 of 20 <br />