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t Lane <br /> ` a— )' (925)Sequoia 40mek,CAe94598 <br /> Walnut Creek,CA 94598 <br /> 988-9600 <br /> Analytical FAX(916)988-9673 <br /> www.sequaialabs.com <br /> Dublin Project: Tosco <br /> Ver Ryan,Inc. <br /> 7 Sierra Court Suite J Project Number: Tosco#11195 Reported: <br /> Dublin CA,94568 Project Manager: Doug Lee 14-Jun-02 09:37 <br /> GasolinelBTEMOxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Nates <br /> MW-13-S5.5 W206020-0I Soil Sampled:29-May-02 00:00 Received:29-May-02 16:05 <br /> Ethanol ND 0.20 mg/kg 1 2060079 07-Jun-02 07-Jun-02 EPA 8260B <br /> Tert-butyl alcohol ND 0.050 <br /> Methyl tert-butyl ether ND 0.0050 <br /> Di-isopropyl ether ND 0.0050 <br /> Ethyl tert-butyl ether ND 0.0050 " <br /> Tert-amyl methyl ether ND 0.0050 <br /> 1,2-Dichloroethane ND 0.0050 <br /> I,2-Dibromoethane(EDB) ND 0.0050 " <br /> Benzene ND 0.0050 <br /> Ethylbenzene ND 0.0050 <br /> Toluene ND 0.0050 <br /> Xylenes(total) ND 0.0050 <br /> Gasoline(C6-C10) ND 1.0 <br /> Surrogate:1,2-DCA-d4 98% 60-140 <br /> Surrogate: Toluene-d8 105% 60-140 <br /> igate:4-BFB 117% 60-140 <br /> Mw4--14-57 206020-02 Soil Sampled:29-May-02 00:00 Received:29-May-02 16:05 <br /> Ethanol ND 0.20 mg/kg 1 2060079 07-Jun-02 07-Jun-02 EPA 8260B <br /> Tart-butyl alcohol ND 0.050 <br /> Methyl tert-butyl ether ND 0.0050 " <br /> Di-isopropyl ether ND 0.0050 <br /> Ethyl tert-butyl ether ND 0.0050 <br /> Tert-amyl methyl ether ND 0.0050 <br /> 1,2-Dichloroethane ND 0.0050 <br /> 1,2-Dibromoethane(EDB) ND 0.0050 <br /> Benzene ND 0.0050 <br /> Ethylbenzene ND 0.0050 " <br /> Toluene ND 0.0050 <br /> Xylenes(total) ND 0.0050 " <br /> Gasoline(C6-C10) ND 1.0 <br /> Surrogate:1,2-DC,4-d4 96% 60-140 <br /> Surrogate: Toluene-d8 101 % 60-140 <br /> Surrogate:4-BFB 113% 60-140 <br /> S" aia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety, <br /> Page 2 of 7 <br />