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404 N Wlget Lane <br /> Walnut Creek CA 94598 <br /> Sequoia (925)986-96W <br /> (6 FAX(925)988-9673 <br /> i„- Analytical www sequolalabsCorn <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal 4 0123 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 20-Jul-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 /> U4(W006495-05)Water Sampled 19-Tun-0013 40 Received 20-Jun-0017 30 <br /> Chloromethane ND 20 ug/1 1 0603007 03-Jul-00 03-Jul-00 EPA 8010B <br /> Vinyl chloride ND 1 0 <br /> Bromomethane ND 10 <br /> Chloroethane ND 10 " <br /> Tnchlorofluoromethane ND 050 <br /> Freon 113 ND 1 0 <br /> IJ-Dichloroethene ND 10 <br /> Methylene chloride ND 10 <br /> trans-l,2-Dichloroethene ND 10 " <br /> 1,1-Dtchloroethane ND 10 <br /> cis-1,2-Diehloroethene ND 10 " <br /> Chloroform ND 10 " <br /> 1,1,1-Trichloroethane ND 10 <br /> Carbon tetrachlonde ND 10 <br /> Dichloroethane ND 20 <br /> " <br /> Whloroethene ND 10 <br /> 1,2-Dichloropropane ND 10 " <br /> Bromodrehloromethane ND 10 " <br /> cis-1,3-Dichloropropene ND 10 <br /> trans-l,3-Dichloropropene ND 0 50 " <br /> 1,1,2-Tnehloroethane ND 050 " <br /> Tetrachloroethene 25 10 <br /> Dibromochloromethane ND 050 " <br /> 1,2-Dibromoethane ND 10 " <br /> Chlorobenzene ND 10 " <br /> Bromoform ND 050 <br /> 1,2,3-Tnchloropropane 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 Dibromodifluoromethane 910% 50-150 <br /> Surrogate 4-BromoJluorobenzene 920% 50-150 " <br /> eQuOia Analytical-Walnut Creek The results in thus report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 9 of 20 <br />