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1455 McDowell Blvd. North,Ste. D <br /> Sequoia Petaluma,CA 94954 <br /> 4 (707) 792-1865 <br /> IR(D- 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 /> 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 /> DSE-7.5'(continued) P908378-08 Soil <br /> Surrogate: Dibromofluoromethane 9080470 8/19/99 8/19/99 80.0-120 91.2 % <br /> Surrogate: 1,2-Dichloroethane-d4 if It <br /> " 80.0-120 90.6 " <br /> Surrogate: Toluene-d8 fo81.0-117 95.6 <br /> Surrogate: 4-Bromofluorobenzene 74.0-121 94.6 <br /> DNW-8.5' P908378-09 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/20/99 0.00500 ND mg/kg <br /> Tert-butyl alcohol 0.100 ND " <br /> Di-isopropyl ether 0.00500 ND " <br /> Ethyl tert-butyl ether 0.00500 ND " <br /> Methyl tert-butyl ether 0.00500 0.0158 " <br /> Surrogate: Dibromofluoromethane 80.0-120 100 % <br /> Surrogate: 1,2-Dichloroethane-d4 80.0-120 102 " <br /> Surrogate: Toluene-d8 81.0-117 102 " <br /> Surrogate: 4-Bromofluorobenzene 74.0-121 102 " <br /> PLE 2-8.5' P908378-11 Soil <br /> Tert-amyl methyl ether 9080470 8/19/99 8/19/99 0.00500 ND mg/kg <br /> Tert-butyl alcohol 0.100 ND " <br /> Di-isopropyl ether 0.00500 ND " <br /> Ethyl tert-butyl ether 0.00500 ND " <br /> Methyl tert-butyl ether 0.00500 ND " <br /> Surrogate: Dibromofluoromethane 80.0-120 90.0 % <br /> Surrogate: 1,2-Dichloroethane-d4 80.0-120 92.0 <br /> Surrogate. Toluene-d8 81.0-117 87.2 <br /> Surrogate: 4-Bromoflctorobenzene 74.0-121 91.0 " <br /> Sequoia Analytical-Petaluma *Refer to end of report for te-v of notes and definitions. <br /> Page 9 of 16 <br />