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Sequoia 404 e ,CA Lane <br /> Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> Analytical <br /> FAX equo labs.c 73 <br /> 1 www.seduoialabs.com <br /> Gettler Ryan, Inc.-Dublin Project: Tosco <br /> 6747 Sierra Court Suite,1 Project Number, Tosco# 11195 Reported: <br /> Dublin CA,94568 Project Manager: Doug Lee 11-Mar-02 07:42 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> B-1 (W202365-01)Water Sampled: 25-Feb-02 00:00 Received:25-Feb-02 17:50 <br /> Ethanol ND 500 ug/l 1 21326016 26-Feb-02 27-Feb-02 EPA 8260B <br /> test-Butyl alcohol ND 20 " <br /> Methyl tert-butyl ether(MTBE) 95 2.0 " <br /> Di-isopropyl ether ND 2.0 " <br /> Ethyl tort-butyl ether ND 2.0 " <br /> tert-Amyl methyl ether ND 2.0 " <br /> 1,2-Dichloroethane ND 2.4 " <br /> Ethylene dibromide ND 2.0 " <br /> Surrogate: Dibromofluorornethane 104% 50-150 " <br /> Surrogate: 1,2-Dichloroethane-d4 88% 50-150 " <br /> B-2(W202365-02)Water Sampled: 25-Feb-02 00:00 Received:25-Feb-02 17:50 <br /> Ethanol ND 25000 ug/l 50 2B26016 27-Feb-02 27-Feb-02 EPA 8260B <br /> -Butyl alcohol ND 1004 " <br /> .ethyl tert-butyl ether(MTBE) 10000 100 " <br /> Di-isopropyl ether ND 100 " <br /> Ethyl tort-butyl ether ND 100 " <br /> tert-Amyl methyl ether ND 100 " <br /> 1,2-Dichloroethane ND 100 " <br /> Ethylene dibromide ND 100 " <br /> Surrogate: Dibromofluoromethane 102% 50-150 " <br /> Surrogate: 1,2-Dichloroethane-d4 84% 50-150 " <br /> B-3(W202365-03)Water Sampled:25-Feb-02 00:00 Received:25-Feb-02.17:50 <br /> Ethanol ND 500 ugll 1 21326016 27-Feb-02 27-Feb-02 EPA 8260B <br /> tert-Butyl alcohol ND 20 " <br /> Methyl tert-butyl ether(MTBE) ND 2.0 " <br /> Di-isopropyl ether ND 2.0 " <br /> Ethyl tert-butyl ether ND 2.0 " <br /> tert-Amyl methyl ether ND 2.0 " <br /> 1,2-Dichloroethane ND 2.0 " <br /> Ethylene dibromide ND 2.0 " <br /> Surrogate:Dibrornofluoromethane 102% 50-150 " <br /> Surrogate- 1,2-Dichloroethane-d4 85% 50-150 " <br /> 'Auoia 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 he reproduced in its entirely. <br /> 4 of 10 <br />