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Sequoia 660 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N 1Mget 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 p Petaiuma.CA 94954 (707)792-1865 FAX(707)792-034Z <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> r <br /> Blame Tech Services Project Chevron(3) Sampled 2/23/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-6171,990223-Y2 Received 2/26/99 <br /> San Jose,CA 95112 Project Manager Chnstine Lillie Reported 3119/99 <br /> Sample Description OW-1 <br /> Laboratory Sample Number L902022-07 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limas Limit Result Units Notes* <br /> Sequoia Analvttcal-San Carlos <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9030014 3/2199 312/99 500 65 4 ug/l 1 <br /> Benzene 0 500 ND " <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND <br /> Methyl tert-butyl ether 5 00 48 7 <br /> Surrogate a a u-Trifluorotoluene 700-130 191 % 2 <br /> Volatile Or2antc Oxvgenated Compounds by EPA Method 8260A 3 <br /> Ethanol 9030045 3/16199 3116199 3000 ND ug/1 <br /> Tert-butyl alcohol 200 ND <br /> Methvl tert-butyl ether 200 823 " <br /> Di-isopropyl ether 2 00 ND " <br /> WEythl tert-butyl ether 2 00 ND <br /> ert-amvl methvl ether 2 00 396 " <br /> Surrogate 12-Dichloroethane-d4 760-114 102 % <br /> equoia Analytical-San Carlos *Refer to end of report far text of notes and definitions <br /> Page 8 of 13 <br />