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u <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court,Suite 3 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 Iamu Units lhlutton Batch Prepancd Analyzed Method Notes <br /> U-1 (L103137-02)Water Sampled 03/21/0113 20 Received 03/21/0116 35 <br /> Chloromethane ND 2 0 ug/l 1 1D02011 04/02/01 04/02101 EPA 8010E <br /> Vinyl chloride ND to " <br /> Bromomethane ND 12 It <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-1,2-Dichloroethene 1.0 10 " <br /> 1,1-Mchloroethane ND 10 " <br /> cis-1,2-Dichloroethene 40 10 " <br /> Chlorofonn ND 10 <br /> 1,1,1-Tnchloroethane ND 10 <br /> Carbon tetrachloride ND 10 " • <br /> 1,2-Dichloroethane ND 16 " <br /> Trichloroethene 22 11 <br /> 1,2-Dichioropropane ND 10 <br /> Bromodichloromethane ND 10 <br />-ins-li3-Dichloropropcne ND 10 " <br />—trans-1,3-Dichloropropene ND—0 60 H " <br /> 1,42-Trichloroethane ND 0 50 0 <br /> Tetrachloroethene 56 30 5 <br /> - Dibromochloromethane — - ND -- - 050 -- <br /> 1,2-Dlbromoethane ND 10 <br /> Chlorobenzene ND 10 " <br /> Bromoform ND 050 " <br /> 1,2,3-Tnchloropropane ND 050 <br /> 1,1,2,2-Tetrachloroethane ND 060 <br /> 1,3-Mchlorobenzene ND 050 <br /> 1,4-Dichlorobenzeiie ND 12 <br /> 1,2-Dichlorobenzene ND 12 <br /> Surrogate Dtbromodiuoromethane 115% 50-150 " <br /> Surrogate 4 Bromofluorobenzene 109% 50-150 " <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain o <br /> custody document Ats analytical report must be reproduced in its entirety <br /> Page 10 of 27 <br />