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Sequoia 1455 McDowell Blvd. North,Ste. D <br /> Petaluma,CA 94954 <br /> (707) 792-1865 <br /> Analytical FAX (707) 792-0342 <br /> Cambria Environmental Project: Shell Oil Co. Sampled: 8/11/99 to 8/12/99 <br /> 270 Perkins St. Project Number: 440 W Charter,Stockton Received: 8/13/99 <br /> Sonoma,CA 95476 Project Manager: Aubrey Cool Reported: 8/20/99 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> DNW-8.5'(continued) P908378-09 Soil <br /> Toluene 9080398 8/17/99 8/17/99 0.00200 ND mg/kg <br /> Ethylbenzene 0.00200 ND " <br /> Xylenes(total) 0.00400 ND " <br /> Methyl tert-butyl ether 0.0100 0.0140 <br /> Surrogate: a,a,a-Tris luorotoluene 65.0-135 103 % <br /> Surrogate: 4-Bromofluorobenzene 65.0-135 86.7 11 <br /> PLE 2-8.5' P908378-11 Soil <br /> Gasoline 9080398 8/17/99 8/17/99 0.400 ND mg/kg <br /> Benzene 0.00200 ND " <br /> Toluene 0.00200 ND " <br /> Ethylbenzene 0.00200 ND " <br /> Xylenes(total) 0.00400 ND " <br /> Methyl tert-butyl ether 0.0100 ND " <br /> Surrogate: a,a,a-Trifluorotoluene 65.0-135 105 % <br /> Surrogate: 4-Bromofluorobenzene 65.0-135 80.7 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions. <br /> Page 4 of 16 <br />