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Sequoia 404 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N W1get Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Iwo Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos, CA 94070-4111 (650)232 9600 FAX (650)232-9612 <br /> Blaine Tech Services Project Shell(]) Sampled 4/15/99 <br /> 1680 Rogers Avenue Project Number Shell 2575 Country Club Blvd,Stockton Received 4/16/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 5/6/99 <br /> Sample Description MW7 <br /> Laboratory Sample Number L904208-12 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Senuoia Analytical-Sas Carlos <br /> Total Purl;eable Hydrocarbons(C6-C12).BTEX and MTBE by DHS LUFr <br /> Purgeable Hydrocarbons as Gasoline 9040122 4/24/99 4/24/99 500 ND ug/l <br /> Benzene 0 500 ND " <br /> Tolueneto 0 500 ND <br /> Ethylbenzene 0 500 ND <br /> Xylenes(total) 0 500 ND " <br /> Methyl tert-butyl ether 500 216 <br /> Surrogate a a,a-Tnfluorotoluene " 700-130 101 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A <br /> Ethanol 9040101 4/21/99 4/21/99 3000 ND ug/l <br /> Tert-butyl alcohol 200 ND " <br /> Methyl tert-butyl ether 200 270 " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether 2 00 ND " <br /> Tert-amyl methyl ether 2 00 ND " <br /> Surrogate 12-Dtchloroethane-d4 760-114 111 <br /> Sequoia Analytical-San Carlos '"Refer to end of report for text of notes and deftnitt <br /> Page 13 of 32 <br />