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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 Protect 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 /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> T7-N-24 5'(continued) P908378-04 Soil 4 <br /> Surrogate 4-Bromofluorobenzene 9080470 8/19/99 8/19/99 740-121 944 % <br /> T7-S-19 0' P908378-05 Soil <br /> Teri-amyl methyl ether 9080470 8/19/99 8/19/99 000500 ND mg/kg <br /> Tert-butyl alcohol 0 100 ND " <br /> Di-isopropyl ether 000500 ND " <br /> Ethyl tert-butyl ether 000500 ND " <br /> Methyl tert-butyl ether " " " 000500 ND to <br /> Surrogate Dtbromofluoromethane 800-120 946 % <br /> Surrogate 12-Dtchloroethane-d4 800-120 916 " <br /> Surrogate Toluene-d8 810-117 968 " <br /> Surrogate 4-Bromofluorobenzene 11 Or740-121 970 " <br /> DSW-7 0' P908378-06 Sail <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 000500 ND mg/kg <br /> Tert-butyl alcohol 0 100 ND <br /> Di-isopropyl ether 000500 ND " <br /> Ethyl tert-butyl ether 000500 ND " <br /> Methyl tert-butyl ether or Or000500 ND <br /> Surrogate_Dtbromofluoromethane of 80 0120 90 0 % <br /> Surrogate 1,2-Dtchloroethane-d4 800-120 870 Or <br /> Surrogate—Toluene-d8 _- _ _ __. " _ - -_ _81 0_117 -_ _ -924 " <br /> Surrogate 4-Bromofluorobenzene " 740-121 926 " <br /> DSW1-3 0' P908378-07 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/20/99 000500 ND mg/kg <br /> Tert-butyl alcohol " " " 0 100 ND " <br /> Di-isopropyl ether " " or <br /> 000500 ND It <br /> Ethyl tert-butyl ether 000500 ND " <br /> Methyl tert-butyl ether 000500 ND " <br /> Surrogate Dtbromofluoromethane 800-120 102 % <br /> Surrogate 1 2-Dtchloroethane-d4 11 to800-120 102 it <br /> Surrogate Toluene-d8 to " to 810-117 103 or <br /> Surrogate 4-Bromofluorobenzene to or Or740-121 115 11 <br /> DSE-7 5' P908378-08 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 000500 ND mg/kg <br /> Tert-butyl alcohol 0 100 ND " <br /> Di-isopropyl ether 000500 ND " <br /> Ethyl tert-butyl ether 000500 ND " <br /> Methyl tert-butyl ether 000500 ND " <br /> Sequoia Analytical-Petaluma *Refer to end of report far tart of notes and defibutto <br /> Page 8 of 16 <br />