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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> 40404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> IwoAnalytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 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(l) 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 MW5 <br /> Laboratory Sample Number L904208-20 <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-CI21.,BTEX and MTBE by DHS LUIFT <br /> Purgeable Hydrocarbons as Gasoline 9040134 4/27/99 4/27/99 100000 124000 ug/l 2 <br /> Benzene 1000 20200 " <br /> Toluene 1000 20400 " <br /> Ethylbenzene 1000 2440 " <br /> Xylenes(total) to1000 13800 " <br /> Methyl tert-butyl ether It <br /> 10000 408000 " <br /> Surrogate a,a a-Tri}luorotoluene " 700-130 822 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A <br /> Ethanol 9040114 4/22/99 4/23/99 7500000 ND ug/l <br /> Tert-butyl alcohol it to500000 ND it <br /> Methyl tert-butyl ether if5000 460000 " <br /> Di-isopropyl ether to5000 ND " <br /> Ethyl tert-butyl ether 5000 ND " <br /> Tert-amyl methyl ether 5000 5080 " <br /> Surrogate 1,2-Dichloroethane-d4 760-114 144 YO <br /> Sequoia Analytical- San Carlos *Refer to end of report for text of nates and definiti� <br /> Page 21 of 32 <br />