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i <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal SS#0123 Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 04/04/01 13 15 <br /> Volatile Organic Compounds by EPA Method 8010B <br /> Sequoia Analytical-Walnut Creek <br /> Repomng <br /> Analyte Result L=t Units Dilution Batch Prepared Analyzed Method Notes <br /> U-6(L103137-07)Water Sampled 03/21/011359 Received-03/21/01 16:35 <br /> Chloromethane ND 20 ug/1 1 1D02011 04/02/01 04102!01 EPA 8010B <br /> Vinyl chloride ND 10 " <br /> Bromomethane ND 12 <br /> Chloroethane ND 10 <br /> Tnchlorofluoromethane ND 060 <br /> Freon 113 ND 10 " <br /> 1,1-Dichloroethene ND 10 <br /> Methylene chloride ND 10 <br /> trans-l,2-Dichloroethene ND 10 " <br /> 1,1-Dichloroethane ND 10 <br /> cis-1,2-Dichloroethene ND 10 <br /> Chloroform ND 10 " <br /> 1,1,1-Tnchloroethane ND 10 <br /> Wn tetrachlonde ND 10 <br /> chloroethane ND 16 " <br /> Tfichloroethene ND I1 " <br /> 1,2-Dichloropropane ND 10 <br /> 13mmodichloromethane ND 10 " <br /> cis-1,3-Dichloropropene ND 10 " <br /> hww,l,3-Dichlon4nxg ane ND 060 <br /> 1,1,2-Tnchloroethane ND 050 <br /> Tetrachloroethene 2A 060 <br /> Dibromochloromethane ND 050 <br /> 1,2-Ihbromoethane ND 10 " <br /> Chlorobenzene ND 10 <br /> Bromofonn ND 050 <br /> 1,2,3-Tnehloropropane ND 050 <br /> 1,1,2,2-Tetrachloroethane ND 060 " <br /> 1,3-Dichlorobenzene ND 050 <br /> 1,4-Dichlorobenzene ND 12 " <br /> 1,2-Dichlorobenzene ND 12 " <br /> Surrogate Dibrotnodrfluoromethane 115% 50-150 <br /> Surrogate 4-BromoJluorobenzene 968% 50-150 ^ <br /> uoia Analytical-San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Thu analytical report must be reproduced in its entirety <br /> Page IS of 27 <br />