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• 680 Chesapeake Drive Redwood City CA 94063 (650)M4-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 945% (925)988-9600 FAX(925)988-%73 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0 100 <br /> 455 <br /> Blvd <br /> A 94954 (707)792- 865 FAX(707)79Z-0342 <br /> Analytical 1551 Industrial Road North Ste D �CarlrlosCCA 94070-4111 (650)232-19600 FAX(650)232.-9612 <br /> SECOR International Project ARCO 2093,Tracy,CA Sampled 3/17/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7G600-604-01 Received 3/18/99 <br /> Sacramento,CA 95827 Pro ect Mana er Rusty Benkosky Reported 4///99 <br /> Total Purgeable Hydrocarbons (C5-02), BTEX and MTBE by DHS LUFT <br /> Sequoia Analyttcal-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes' <br /> ATR-12 5903261-01 <br /> Water <br /> Purgeable Hydrocarbons 9030308 3/24/99 3/24/99 500 ND ug/l <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 500 ND " <br /> Surrogate a a,a-Trii luorotoluene 600-140 879 % <br /> ATR-1 0 5903261-02 W ate r <br /> Purgeable Hydrocarbons 9030308 3/24/99 3/24/99 500 ND ugli <br /> Benzene 0 500 ND <br /> Toluene 0 500 ND <br /> Ethylbenzene 0 500 ND " <br /> lenes(total) 0 500 ND <br /> ihyi tert-butyl ether 500 ND <br /> Surrogate a a a-Trifluorotoluene - 600-140 818 % <br /> ATR-9 5903261-03 Water <br /> Purgeable Hydrocarbons 9030308 3/24/99 3/24/99 500 ND ug/l <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 ND " <br /> Surrogate a a a-Trifluorotoluene 600-140 871 % <br /> ATR-I1 5903261-04 Water <br /> Purgeable Hydrocarbons 9030308 3/24/99 3/24/99 500 ND ug/1 <br /> Benzene 0 500 ND " <br /> Toluene 0 500 0 821 " <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND <br /> Methyl tert-butyl ether 5 00 ND " <br /> Surrogate a a a-Trifluorotoluene 600-140 895 % <br /> ATRA 5943261.05 Water <br /> Purgeable Hydrocarbons 9030308 3/24/99 3124/99 500 ND ug/l <br /> Benzene 0 500 ND " <br /> Toluene 0 500 ND <br /> Ethylbenzene 0 500 ND " <br /> eves(total) 0 500 ND <br /> equoia Analytical -Sacramento *Refer to end of report for text of notes and definitions <br /> Sandra R Hanson,Client Services Representative page 2 of <br />