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404 N Wlset Lane <br /> Walnut Geek,CA 94598 <br /> Sequoia (925)9BB-9600 <br /> 4 ID FAX(925)988-673 <br /> Analytical www sequolalabs corn <br /> ow <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J ProjectNumber Unocal#0123 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 07-Apr-00 15 41 <br /> Volatile organic Compounds by EPA Method 8010B <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Linut Units Dilution Batch Prepared Analyzed Method Notes <br /> U4(WO03457-05)Water Sampled 16-Mar-00 15 20 Received 17-Mar-00 16 25 <br /> Chloromethane ND 20 ug/1 1 OC28007 28-Mar-00 28-Mar-00 EPA 801 OB <br /> Vinyl chloride ND 10 <br /> Bromomethane ND 10 " <br /> Chloroethane ND 10 " <br /> Trichlorofluoromethane ND 050 " <br /> Freon 113 ND 10 " <br /> 1,1-Dichloroethene ND 10 " <br /> Methylene chloride 61 50 <br /> trans-1,2-Dichloroethene ND 10 <br /> l,l-Dichloroethane ND 10 <br /> cis-1,2-Dichlomethene ND 10 <br /> Chloroform ND 10 <br /> MThchloroethane ND 10 <br /> n tetrachloride ND 10 <br /> 1,2-Dichloroethane ND 20 <br /> Trichloroethene ND 10 <br /> 1,2-Dichloropropane ND 10 ^ " <br /> Bromodichloromethane ND 10 <br /> cis-1,3-Dichloropropene ND 10 " <br /> trans-l,3-Dichloropropene ND 050 " <br /> 1,12-Trichloroethane ND 050 <br /> Tetrachloroethene 32 10 <br /> Dibromochloromethane ND 050 <br /> 1,2-Dibromoethane ND 10 <br /> Chlorobenzene ND 10 <br /> Bromoform ND 050 <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 Dibromodiuoromethane 670% 50-150 " <br /> Surrogate 4 Bromofluorobenzene 670% 50-150 " <br /> $e uoia 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 9 of 18 <br />