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• 1455 McDowell Blvd. North,Ste. D <br /> S e qu o 1 a Petaluma,CA 94954 <br /> (707) 792-1865 <br /> Analytical FAX(707) 792-0342 <br /> Cambria Environmental Project: Shell Oil Co. Sampled: 9/29/99 <br /> 270 Perkins St. Project Number: 440 Charter,Stockton Received: 9/29/99 <br /> Sonoma,CA 95476 Project Manager: Aubrey Cool Reported: 10/11/99 <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 /> VNI4.5' P909681-01 Soil <br /> Tert-amyl methyl ether 9090767 9/30/99 9/30/99 0.00500 ND mg/kL, <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 94.1 <br /> Surrogate: 1,2-Dichloroethane-d4 80.0-120 95.0 <br /> Surrogate: Toluene-d8 81.0-117 80.2 <br /> Surrogate: 4-Bromofluorobenzene 74.0-121 85.8 <br /> VSI-6.0' P909681-02 Soil <br /> Tert-amyl methyl ether 9090767 9/30/99 9/30/99 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 93.6 <br /> Surrogate: 1,2-Dich/oroethane-d4 80.0-120 94.8 <br /> Surrogate: Toluene-d8 81.0-117 85.4 <br /> Surrogate: 4-Bromofluorobenzene 74.0-111 91.8 " <br /> Sequoia Analytical -Petaluma *Refer to end of report for teat of notes and definitions. <br /> Page 5 of I I <br />