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404 N Wiget Lane <br /> Walnut Geek,CA 94598 <br /> Sequoia (925)988-9600 <br /> 1 4 FAX(925)988-9673 <br /> Analytical www sequotalabs coin <br /> Mttler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0123 Reported <br /> Dublin CA,94568 Project MwWcr Deanna L Harding 20-Ju1-00 11 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-2(W006495-03)Water Sampled 19-Jun-0013 10 Received 20-Jun-0017 30 <br /> Chloromethane ND 20 ugll 1 OCT03007 03-Jul-00 03-Ju1-00 EPA 8010B <br /> Vinyl chlonde ND 10 " n <br /> Bromomethane ND 10 " <br /> Chloroethane ND 10 <br /> Tnchlorofluoromethsne ND 050 <br /> Freon 113 ND 10 <br /> 1,l-Dichloroethene ND 10 <br /> Methylene chloride ND 10 <br /> trans-1,2-Dichloroethene ND 10 <br /> IJ-DFchlomethane ND 10 <br /> cis-1,2-Dich)oroethene ND 10 ^ ^ <br /> Chloroform ND 10 <br /> 1,1,1-Tnchloroethane ND 10 n R <br /> Carbon tetrachlonde ND 10 <br /> Mchloroethane ND 20 <br /> oroethene ND 10 <br /> 1,2-Dichloropropane ND 10 " <br /> Brvmodichloromed me ND 10 ^ " <br /> cis-1,3-Dichloropropene ND 10 <br /> trans-l,3-Dichloropropene ND 050 ^ " <br /> 1,1,2-Tnchloroethane ND 050 " <br /> Tetrachloroethene 15 10 " <br /> Dibromochloromethane ND 050 <br /> 1,2-Dibromoethane ND 10 <br /> Chlorobenzene ND 10 " <br /> Bromoforn ND 050 " <br /> 1,2,3-Tnchloropropane ND 0.50 " <br /> 1,1,2,2-Tetrachloroethane ND 050 ^ " <br /> 1,3-Dichlorobenzene ND 050 " <br /> 1,4-Dichlorobenzene ND 10 <br /> 1,2-Dichlorobenzene ND 20 <br /> Surrogate Dsbromodi luoromedume 830% 50-150 <br /> Surrogate 4Bromofluorobenzene 820% 50-150 " <br /> IIOla Analytical-Walnut Creels The results in tins report apply to the samples analyzed m accordance with die churn of <br /> custody document Tins analytical report mast be reproduced in its entirety <br /> Page 7 of 20 <br />