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h <br /> 404 N Wlget Lane <br /> Walnut Creek,CA 94598 <br /> Sequoia FAX((925)a 49251 988-9966W <br /> 73 a„) Analytical www sequolalabs`om <br /> Gettler 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 07-Apr-00 15 41 <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-3(WO03457-04)Water Sampled 16-Mar-00 13 10 Received 17-Mar-00 16 25 <br /> Chloromethane ND 20 ug/1 1 OC28007 2&Mar-00 28-Mer-00 EPA 8014B <br /> Vinyl chloride ND 10 <br /> Bromomethane ND i 0 " <br /> Chloroethane ND 10 <br /> Trichlorofluoromethane ND 050 <br /> Freon 113 ND 10 " <br /> l,1-Dichloroethene ND 10 <br /> Methylene chloride 83 50 " <br /> trans-1,2-Dichloroethene ND 10 <br /> 1,l-Dichloroethane ND 10 <br /> cis-1,2 Dichloroethene ND 10 " <br /> Chloroform ND 10 <br /> 1,1,1-Tnchloroethane ND 10 <br /> Carbon tetrachloride ND 10 ^ " <br /> 1,2-Dichloroethane ND 20 ^ " <br /> Trichloroethene ND 10 <br /> 1,2-Dichloropropane ND 10 <br /> Bromnodtchloromethane ND 10 <br /> —cis-1,3-Dichloropropene ND 1-0 <br /> —trans-l,3-Dichloropropene —ND—0 50 " <br /> —1,1,2-Trichloroethane ND 0 <br /> Tetrachloroethene 20 10 " <br /> -Dbromochloromethane - _ - --- 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 1. It H " » <br /> 1,4-Dichlorobenzene ND 10 " ~ <br /> 1,2-Dichlorobenzene ND 20 <br /> Surrogate Dibromodtfluoromethane 710% 50-150 " ^ <br /> Surrogate 4-Bromofluorobenzene 680% 50-150 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analysed in accordance with the chain o <br /> 4 <br /> custody document. Thus analytical report must be reproduced in its entirety <br /> Page 8 of 18 <br />