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1551 Industrial Rola <br /> Sequoia Sari Carlos CA 94270"4111 <br /> 1 (650) 232-9600 <br /> FAX(650)232-9612 <br /> Analytical ,"`"�" °o'� `° <br /> s <br /> Gettler-Ryan/Geostrategies(1) Project Tosco(5) Sampled 715100 <br /> 6747 Sierra Court, Suite I ProjectNumber Unocal Circle K SS#1205 Received 715100 <br /> Dublin,CA 94568 Project Manager Deanna Harding Reported 7/18/00 <br /> Sample Description: MW-2 <br /> Laboratory Sample Number L007040-03 -- <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 Pu eable Hydrocarbons C6-C12 BTEX and MTBE by DHS LUFF <br /> Purgeable Hydrocarbons as Gasoline 0070046 7/12/00 7113100 500 5600 119/1 1 <br /> Benzene 500 22.2 " <br /> Toluene " " 5 00 9'22 " <br /> Ethylbenzene " 500 537 " <br /> Xylenes(total) " 5 00 446 " <br /> Methyl tert-butyl ether n500 178 " <br /> Surrogate a,a,a-Trtfluorotoluene " " _" 700-130 114 <br /> Volatile OLrganlc Oxygenated Compounds by EPA Method 9260A 2 <br /> Tert-butyl alcohol 0070038 7112100 7112/00 2000 ND ug/l <br /> Methyl tert-butyl ether " it 400 237 " <br /> Di-isopropyl ether " 400 ND " <br /> Ethyl tert-butyl ether " 400 ND " <br /> Tert-amyl methyl ether " 400 ND " <br /> Surrogate 1,1-Dichlomethane-d4 " " 760-114 102 <br /> Sequoia Analytical-San Carlos 'Refer to end of report for text of notes and definitio <br /> ,Q Page 4 of 10 <br />