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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 /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared ATWy=d Method Notes <br /> U-3(1,103137-04)Water Sampled 03/21/011133 Received:03/21/01 16 35 <br /> Chloromethane ND 20 ug/l ! 1D02011 04/02/01 04/02/01 EPA 8010B <br /> Vinyl chloride ND to <br /> Bromomethane ND 12 " <br /> Chloroethane ND 10 ^ " <br /> Trichlorofluoromethane ND 060 " <br /> Freon 113 ND 10 <br /> 1,1-Dichloroethene ND 10 " <br /> Methylene chloride ND 10 <br /> trans-1,2-Dichloroethene ND 10 ^ " <br /> 1,1-Dichloroethane ND 10 " <br /> cis-1,2-Dichloroethene ND 10 <br /> Chloroform ND 10 " <br /> 1,1,1-Trichloroethane ND 10 <br /> Carbon tetrachloride ND 10 <br /> 1,2-Ihchloroethane ND 16 " <br /> Trichloroethene ND 1l " <br /> 1,2-Dichloropropane ND 10 <br /> Bromodichlorometliane ND 10 <br /> cis-1;3--Dichloropropene ND 10 " <br />—trans-1,3=Diohloropropene ND—0 60 <br /> X1;1;2-Tnchloroethane ND 0 50� " <br /> Tetrachloroethene 2.3 060 " <br /> Dibromochloromethane ND 0 50 -- <br /> 1,2-Dibromoetbane ND 10 <br /> Chlorobeawne ND 10 <br /> Bnxnofortn ND 050 <br /> 1,2,3-Tnchloropropane ND 050 <br /> 1,1,2,2-Tetrachloroethane ND 0 60 <br /> 1,3-Dichlorobctizetie ND 050 " <br /> 1,4-Mchlorobesizene ND 12 <br /> 1,2-Dichlorobenzene ND 12 <br /> Surrogate Dibromodifluoromethane 129% 50-150 " <br /> Surrogate 4 Bromofluorobenzene 111 % 50-150 " <br /> Sequoia Analytical-Sari Carlos The results in this report apply to the samples analyzed in accordance with the chain o <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 12 of 27 <br />