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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)3649233 <br /> Sequoia 404 N Wiget 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 /> 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(1) Sampled 4/15199 <br /> 1680 Rogers Avenue Project Number Shell 2575 Country Club Blvd,Stockton Received 4116/99 <br /> San Jose,CA 95112 Project Manager Fran Thte R orted 5/6/99 <br /> Sample Description RW1A <br /> Laboratory Sample Number- L904208-18 <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 Purseable Hydrocarbons(C6-C121,BTEX and MTBE by DHS LUFr <br /> Purgeable Hydrocarbons as Gasoline 9040121 4/24/99 4/24/99 25000 53500 ug/i 2 <br /> Benzene It250 8850 " <br /> Toluene " " It 250 4910 It <br /> Ethylbenzene It <br /> it 250 1910 " <br /> Xylenes(total) itit250 8550 " <br /> Methyl tent-butyl ether " „ 2500 11200 " <br /> Surrogate a a,a-Trzfluorotoluene if 11700-130 114 <br /> Volatile Organic Oxygenated Compounds by EPA-Method 8260A <br /> Ethanol 9040114 4/22/99 4/22/99 3000000 ND ug/l <br /> 'Pert-butyl alcohol It It <br /> 200000 ND " <br /> Methyl tent-butyl ether " It <br /> 2000 155000 " <br /> Di-isopropyl ether 2000 ND " <br /> Ethyl tert-butyl ether 2000 ND " <br /> Tert-amyl methyl ether 2000 2200 <br /> Surrogate 1,2-Dichloroethane-d4 760-114 112 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitioe <br /> Page 19 of 32 <br />