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404 N.Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> Analytical FAX(916)988-9673 <br /> www.sequoialabs.com <br /> Gettler Ryan,Inc.-Dublin Project: Tosco <br /> 6747 Sierra Court Suite J Project Number: Tosco#11195 Reported: <br /> Dublin CA,94568 Project Manager: Doug Lee 14-Jun-02 09:37 <br /> GasolinelBTEXIOxygenates by EPA method 8260E <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-15-S5.5(W206020-03)Sail Sampled:28-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 /> 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-DCA-d4 95% 60-140 " <br /> Surrogate: Toluene-d8 106% 60-140 " <br /> Surrogate:4-BFB 118% 60-140 <br /> MW-16-S9.5(W206020-04)Soil Sampled: 28-May-02 00.00 Received:29-May-0216:05 " <br /> Ethanol ND 0.20 mg/kg 1 2060079 07-Jun-02 07-Jun-02 EPA 826013 <br /> Tert-butyl alcohol ND 0.050 " <br /> Methyl tert-butyl ether 0.040 0.0050 " <br /> Di-isopropyl ether ND 0.0050 " <br /> Ethyl tent-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 0.0056 " <br /> Xylenes(total) ND 0.0050 " <br /> Gasoline(C6-C10) ND 1.0 " <br /> Surrogate:1,2-DC.444 96% 60-140 " <br /> Surrogate: Toluene-d8 98911, 60-140 " <br /> Surrogate:4-BFB 112% 60-140 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the <br /> custody document. This analytical report must be reproduced in its entio-. <br /> Page 3 of 7 <br />