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151 Industnat Road <br /> 5 <br /> Sequoia San Carlos CA 94070 <br /> Analytical (650)232-9600 <br /> FAX(650)232-9612 <br /> www sequoialabs com <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098,Stockton Reported <br /> Dublin CA, 94568 Project Manager Deanna Harding 07101102 07 46 ' <br /> Volatile Organic Compounds by EPA Method 8.260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> ,Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MVV-5(L206021-06)Water- Sampled 06/10/02 14 02 Received 06/11/02 18 05 <br /> Styrene ND 20 ug/I 1 2060032 06/20/02 06/21/02 EPA 8260B <br /> 1,1,1,2-Tetrachloroethane ND 20 <br /> 1,1,2,2-Tetrachloroethane ND 2 0 <br /> Tetrachloroethene ND 20 <br /> Toluene ND 20 ^ <br /> 1,2,3-Tnehlorobenzene ND 20 <br /> 1,2,4-Trichlorobenzene ND 20 ^ ^ <br /> 1,1,1-Trichloroethane ND 20 <br /> 1,1,2-Trichloroethane ND 20 <br /> Trichloroethene ND 20 <br /> Trichlorofluoromethane ND 50 <br /> 1,2,3-Trichloropropane ND 20 <br /> 1,2,4-Trimethylbenzene 3 3 20 " <br /> 1,3,5-Trimethylbenzene ND 20 " ^ <br /> Vinyl chloride __ ND 20 <br /> Total Xylenes 73 20 " 1� <br /> Surrogate 1,2-Dichloroethane-d4 103 % 76-114 " <br /> Surrogate Toluene-d8 994% 88-110 <br /> Surrogate 4-BFB 960% 86-115 ^ <br /> MW-5 L206021-07 Water Sampled 06/10/02 14 25 Received 06/11/02 18 05 <br /> Benzene 28 _ 2 0 ug/l 1 2060032 06/20/02 06/21/02 EPA 8260B <br /> -Bromobenzene- ND2 0_ <br /> - Bromoch]oromethane - - - TT� ND - �_- 20 -- <br /> Bromodichloromethane-- -_- -ND - ---20 <br /> Bromoform ND 2 Q " p <br /> Bromomethane ND 5 0 <br /> n-8utylbenzene— _ _ - _ _ ND_ _20 <br /> sec-Butylbenzene ND 2 Q " " <br /> Tert-butylbenzene ND 2 0 <br /> Carbon tetrachloride ND 2 0 - <br /> Chlorobenzene ND _ 20 <br /> Chloroethane ND 5 0 ^ ' <br /> Chloroform ND 2 0 ^ " <br /> Chloromethane ND 5 0 <br /> 2-Chlorotoluene- ND 2 0 - <br /> 4-Chlorotoluene ND 20 " <br /> Dibromochlorom ethane ND 2 0 " <br /> 1,2-Dibinmoethane - -- --— - - - ND ---- - -20 <br /> - <br /> Dibromomethane ND 2 0 <br /> Sequoia Analytical -San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety ' <br /> Page 18 of 103 ' <br />