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Sequoia` 684sapeake Drive Redwood City CA 94040 (650) 364-9600 FAX(650)364-9233 <br /> i 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> A aaT�} �� 819 Straker Avenue Suite 8 Sacramento CA 95634 (916)921-9600 FAX(916)921-0100 <br /> l L 1455 McDowell Blvd North Ste D Petaluma GA 94954 (707)792 1865 FAX(707)742-0342 <br /> alne Technical Services,Inc Project Shell Oil Co Sampled 12/29/98 <br /> 1680 Rogers Ave Project Number 341 East Main-Ripon Received 12/31/98 <br /> San Jose,CA 95112 —Project Manager Fran Thie Reported 1115/99 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015NV8020M <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MW-1 P901023-01 Water <br /> Gasoline 9010084 1/7/99 1/7/99 50000 ND ug/l <br /> Benzene 500 ND " <br /> Toluene 500 ND " <br /> Ethylbenzene 500 ND " <br /> Xylenes(total) 500 ND " <br /> Methyl tert-butyl ether 2000 139000 " <br /> Surrogate a,a a-Trifluorotoluene 650-135 913 <br /> ;Surrogate 4-Bromofluorobenzene 650-135 103 " <br /> n <br /> uoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 2 of 7 <br />