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Sequoia 660 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 (9I6)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)791-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> r� <br /> Blaine Tech Services Project Chevron(3) Sampled 315199 <br /> 1680 Rogers Avenue Project Number Chevron 9-3232,99030541 Received 3/8/99 <br /> San Jose,CA 95112 Project Mana er Christine Lillie Reported 3126/99 <br /> Sample Description MW-2 <br /> Laboratory Sample Number L903064-02 <br /> Batch Date Date Specific Method/ Reporting <br /> [Anaiyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Seguola Analytical-San Carlos <br /> Total Puraeable/Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT <br /> Purgeable Hydrocarbons as Gasoline 9030043 3/11/99 3/11/99 20000 64400 ug/1 1 <br /> Benzene " " " 200 15800 " <br /> Toluene 200 3210 " <br /> Ethylbenzene 200 3240 " <br /> Xylenes(total) 200 8040 " <br /> Methyl tert-butyl ether 2000 ND " <br /> Surrogate a,a a-Tnfluorotoluene 700-130 116 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A 2 <br /> Ethanol 9030030 3/10/99 3/10/99 375000 ND ug/l <br /> Tert-butyl alcohol 25000 ND " <br /> Methyl tent-butyl ether " 250 ND " <br /> Di-isopropyl ether 250 ND " <br /> Itert-butyl ether 250 ND " <br /> amyl methyl ether 250 ND " <br /> Surrogate 1,2-Dichloroethane-d4 760-114 952 % <br /> oia Analvtical- San Carlos *Reter to ena of o <br /> to ort f rext o notes and de nutr <br /> 17 ,f ,f f OiTS <br /> Page 3 of 10 <br />