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1551 IMustrlA Road <br /> San Carlos,CA 94070-4111 <br /> 1 Sequoia (650)232-9600 <br /> FAX(650)232-%12 <br /> Analytical www seq°Olalabs`°m <br /> Gett1er-Ryan/Geostrategtes(1) <br /> Project: Tosco(5) Sampled. 7/5/00 <br /> 6747 Sierra Court,Suite J Project Number Unocal Circle K SS#1205 Received 7/5/00 <br /> Dublin,CA 94568 Pro ect Manager Deanna Hardin 7118/00 <br /> Sample Description: MW-3 <br /> Laboratory Sample Number: L007040-04 <br /> Batch Date Date Specific Method/ Reporting <br /> Anal Number ared Anal Surrogate Limits Lima Result Units <br /> Seguoin Ana eal-San Carlos <br /> Total Pureeable Hydrocarbons C6-C12BTEX and MTBE by DHS LUFI' <br /> Pnrgeable Hydrocarbons as Gasoline 0070052 7/13/00 7/13100 500 3640 ug/l 1 <br /> Benzene n n n 5 00 21.9 " <br /> Toluene " 500 ND " <br /> Ethylbenzene " " " 5 00 190 " <br /> Xylenes(total) 500 67.1 " <br /> Methyl tert-butyl ether " Soo ND " <br /> Surrogate a,a,o-Tnfluorotoluene " " 700-130 116 % <br /> Volatile Organic Oxygenated Compounds by EPA Method 82 <br /> Tertbutyl alcohol 0070038 7/12/00 7112/00 1000 ND ug/! <br /> Methyl tert-butyl ether " 200 ND " <br /> Di-isopropyl ether " " " 200 ND „ <br /> Ethyl tent-butyl ether 200 ND <br /> "-amyl meshy!ether „ n n 20 0 ND " <br /> gate 1,1-Dwhlonoethane d4 76 0-119 101 <br /> ota Analytical-San Carlos *Refer to end of reportfor text of nota and definitwns <br /> Page 5 of 10 <br />