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i <br /> 404 N Wiget Lane <br /> Sequoia WalnutCYe&,CA 94598 <br /> (925)988-9600 <br /> Analytical FAX(925)988-9673 <br /> www xquoialabs can <br /> ether Ryan,Inc -Dublin Project Tosco W208192 <br /> 47 Sierra Court Suite J Project Number Tosco# 11192 Reported. <br /> Dublin CA,94568 Project Manager Deanna L Harding 18-Oct-02 12 52 <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 /> MW-9 208192-09 Water Sampled 09-Aug-02 10 45 Received 09-Aug-02 16 15 <br /> Ethanol ND 500 ugA 1 21112008 12-Aug-02 12-Aug-02 EPA 8260B <br /> tert-Butyl alcohol ND 20 <br /> Methyl tert-butyl ether(MTBE) 2 0 2 0 <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 2 0 " <br /> tert-Amyl methyl ether ND 20 " <br /> 1,2-Dtchloroethane ND 20 <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dibromofluoromethane 101% 50-150 " <br /> Surrogate 1,2-Dtchloroethane-d4 996% 50-150 " <br /> MW-10(W208192-10)Water Sampled 08-Aug-02 11 20 Received 09-Aug-02 16 15 _ <br /> Ethanol ND 500 ugA 1 2H12008 12-Aug-02 12-Aug-02 EPA 8260B <br /> tert-Butyl alcohol ND 20 <br /> Methyl tert-butyl ether(MTBE) ND 20Ksop <br /> rether ND 2 0 <br /> qwt <br /> I ert-butyl-butyl ether ND 2 0 <br /> _,Amyl methyl ether ND 20 " <br /> 1,2-Dichloroethane ND 20 <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 103% 50-150 " <br /> Surrogate 1,2-Dtchloroethane-d4 954% 50-150 <br /> MW-11 208192-11 Water Sampled 08-Aug-02 13 45 Received 09-Aug-02 16 15 <br /> Ethanol ND 500 ugA 1 2H I2008 12-Aug-02 12-Aug-02 EPA 8260B <br /> tert-Butyl alcohol ND 20 <br /> Methyl tert-butyl ether(MTBE) 91 20 <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 <br /> 1,2-Dtchloroethane 2 9 20 " <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 104% 50-150 " <br /> Surrogate 1,2-Dtchloroethane-d4 990% 50-150 <br /> la Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> 6of17 <br />