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404 N Wiget Lane <br /> Sequoia Walnut Creek)CA 4959080 <br /> ( 4 FAX(925)988-9673 <br /> oAnalytical www sequolalabs com <br /> ttler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0123 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 20-Jul-0011 19 <br /> Volatile Organic Compounds by EPA Method 8010B <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-0(WO06495-07)Water Sampled 19-Jun-00 12 05 Received 20-Tun-00 17 30 <br /> Chloromethane ND 20 u&4 1 0G03007 03-Jul-00 03-Jul-00 EPA 8010E <br /> Vinyl chloride ND 10 <br /> Bromomethane ND 10 <br /> Chloroethane ND 10 „ " „ •, <br /> Trichlorofluoromethane ND 050 n <br /> Freon 113 ND 10 <br /> 1,1-Dichloroethene ND 10 <br /> Methylene chloride ND 10 " <br /> trans-1,2-Dichloroethene ND 10 " <br /> 1,1-Dichloroethane ND 10 <br /> cis-1,2-Dichlaroethene 13 10 <br /> Chloroform ND 10 <br /> 1,1,1-Trichloroethane ND 10 <br /> Carbon tetrachloride ND 10 <br /> Dichloroethane ND 20 " <br /> hloroethene ND 10 " <br /> 1,2-Dichloropropane ND 10 <br /> Bromodichloromethane ND 10 <br /> cis-1,3-Drchloropropene ND 10 " " •' " <br /> trans-1,3-Drchloropropene ND 050 " <br /> 1,1,2-Tnchloroethane ND 050 <br /> Tetrachloroethene 40 10 " <br /> Dibromochloromethane ND 050 " <br /> 1,2-Dibromoethane ND 10 <br /> Chlorobenzene ND 10 " <br /> Bromoform ND 050 <br /> 1,2,3-Tnehloropropane ND 050 " <br /> 1,1,2,2-Tetrachloroethane ND 050 " <br /> 1,3-Dichlorobenzene ND 050 " <br /> 1,4-Dichlorobenzene ND 10 „ n <br /> 1,2-Dichlorobenzene ND 20 <br /> Surrogate Drbromodifluoromethane 100% 50-150 " <br /> Surrogate 4Bromofluorobenaene 110% 50-150 " <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analysed in accordance with the chain of <br /> • custody document This analytical report must be reproduced in its entirety <br /> Page 11 of 20 <br />