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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 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-t865 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 Shel](1) 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 MW6 <br /> Laboratory Sample Number L904208-14 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surra ate Limits Limit Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9040116 4/23/99 4/23/99 500 ND ug/1 <br /> Benzene " It <br /> It 0 500 ND " <br /> Toluene It <br /> itIt 0 500 ND " <br /> Ethylbenzene It <br /> It 0 500 ND " <br /> Xylenes(total) 0 500 ND " <br /> Methyl tert-butyl ether 500 11 1 " <br /> Surrogate a a a-Tnfluorotoluene 700-130 872 % <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 It <br /> 200 219 " <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tent-butyl ether 200 ND <br /> Tert-amyl methyl ether " it It 200 ND " <br /> Surrogate 1,2-Dichloroethane-d4 760-114 112 %0 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of nates and definitice <br /> Page 15 of 32 <br />