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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> (707)792-1865 <br /> DAnalytical FAX (707)792-0342 <br /> qcp <br /> Cambria Environmental Project Shell Oil Co Sampled 8/11/99 to 8/12199 <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 Lirmt Result Units Nates* <br /> DNW-8 5' (continued) P908378-09 Soil <br /> Toluene 9080398 8/17/99 8117/99 000200 ND mg/kg <br /> Ethylbenzene " 1, 000200 ND " <br /> Xylenes(total) 000400 ND " <br /> Methyl tert-butyl ether 00100 00140 " <br /> Surrogate a a a-Tris luorotoluene 650-133 103 % <br /> Surrogate 4-Bromofluorobenzene IF 650-135 86 7 <br /> PLE 2-8 5' P908378-11 Soil <br /> Gasoline 9080398 8117/99 8/17199 0 400 ND mg/kg <br /> Benzene 000200 ND " <br /> Toluene 000200 ND " <br /> Ethylbenzene 000200 ND " <br /> Xylenes(total) 000400 ND " <br /> Methyl tert-butyl ether 00100 ND " <br /> Surrogate a a,a-Trifluorotoluene 650-135 105 % • <br /> Surrogate 4-Bromofluorobenzene 650-135 80 7 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definity W <br /> Page 4 of 16 <br />