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Q 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 /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 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 Club Blvd,Stockton Received 4/16/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 5/6/99 <br /> Sample Description. 2452CC DOWN <br /> Laboratory Sample Number: L904208-04 <br /> Batch Date Date Specific Method/ Reporting <br /> Analyte Number Prepared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Sequoia Analytical-San Carlos <br /> Total Pur eable Hydrocarbons C6-C12 BTEX and MTBE by DHS EUFT <br /> Purgeable Hydrocarbons as Gasoline 9040104 4/21/99 4/21/99 500 ND ug/l <br /> Benzene " 1 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-Tnfluorotoluene 700-130 994 % <br /> Volatile Organic Oxygenated Compounds b_yEPA Method 8260A <br /> Ethanol 9040101 4/21/99 4/21/99 3000 ND ug/1 <br /> Tert-butyl alcohol 200 ND " <br /> Methyl tert-butyl ether 200 ND " <br /> Di-isopropyl ether 200 NO " <br /> Ethyl Cert-butyl ether to " 200 ND " <br /> Tert-amyl methyl ether " " " 200 ND " <br /> Surrogate I.2-Dichloroethane-d4 to itit760-114 102 % <br /> Sequoia Analytical- San Carlos *Refer to end of report for text of notes and def niti� <br /> Page 5 of 32 <br /> PD <br />