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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 /> Analyt 1• 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Cal 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 4/15/99 <br /> 1680 Rogers Avenue Project Number Shell 2575 Country CIub Blvd, Stockton Received 4/16/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 516/99 <br /> Sample Descrlpttow MW10 <br /> Laboratory Sample Number L904208-10 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prpared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Sequoin Analytical-San Carlos <br /> Total Puraeable Hydrocarbons(C6-C12).BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9040106 4/21/99 4/21/99 500 ND ug/I <br /> Benzene 11 P. 110 500 ND " <br /> Toluene to " to 0 500 ND " <br /> Ethylbenzene to " to 0 500 ND to <br /> Xylenes(total) 0 500 ND to <br /> Methyl tett-butyl ether 500 ND to <br /> Surrogate a,a,a-Trtfluorotoluene to 700-130 770 % <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 ND " <br /> Dl-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether " 200 ND " <br /> Tert-amyl methyl ether 200 ND " <br /> Surrogate 1 2-Dtchloroethane-d4 760-114 109 % <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definite <br /> Page 11 of 32 <br />