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819 Stnker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> Analytical FAX <br /> 41) (916)921 0504 <br /> (9]6)92 I-0104 <br /> www sequoialabs corn <br /> Gettler-Ryan-Dublin Project Unocal 5098,Stockton,CA 5210010 <br /> 6747 Sierra Court, Ste J Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 10/14/02 IS 46 <br /> Volatile Organic Compounds by EPA Method 8260B <br />—' Sequoia Analytical - Sacramento <br /> Reporting l <br /> Analyte Result limit Units Dilution Batch y Prepared Analyzed Method Notes <br /> MW-24S (S210010-32)Water Sampled 09/22/02 19 51 Received 09/26/02 18 35 <br /> n-Propylbenzene ND 50 us/] 100 2100083 10/04/02 10/05/02 EPA 8260E <br /> Styrene ND 50 <br /> 1,1,1,2-Tetrachloroethane ND 50 ^ <br /> 1,1,2,2-Tetrachloroethane ND 100 " <br /> Terrachloroethene ND 50 ^ <br /> Toluene 94 50 <br /> 1,2,3-Tnchlorobenzene ND 50 ^ ^ <br /> 1,2,4-Tnchlorobenzene ND 50 ^ <br /> 1 ]J-Tnchloroethane ND 50 <br /> 1,1,2-Trichloroethane ND 50 <br /> Trichloroethene ND SQ <br /> Trichlorofluoromethane ND 50 " <br /> 1,2,3-Trichloropropane ND - 100 <br /> 1,2,4-Trimethylbenzene 180 50 <br /> 1,3,5-Tnmethylbenzene ND 50 <br /> Vinyl chloride ND 50 " Mr <br /> Total Xylenes 120 50 <br /> Sur;ogate Dibromofluoromethane 97916 70-130 " <br /> Sure ogate 1,2-DCA-d4 104% 70-130 <br /> Suri agate Toluene-r18 114% 70-130 ^ <br /> TSui rogate 4-BFB — <br /> A7W-251) (5210010-33)Water Sampled 09/23/02 16 52 Received 09/26/02 18 35 <br /> 1,2,3-Trime6ylbenzene -� 31 25 ug/I 5 2100465T 10/05/02 10/05/02 EPA 8260B <br /> 1-ethyl-2-methylbenzene _ - - - _ --32-T --_25_ - ^ ^ <br /> 2-methylbutane 42 25 <br /> Methylcyclopentane 57 25 " <br /> T_etrah drofuran 28 _2_5 <br /> Benzene ND 2 5 ^ <br /> Bromobenzene ND 2 5 <br /> Bromochloromethane ND _ 2 5 <br /> Bromodichlorom ethane ND 2 5 <br /> Bromoform ND -2 5 " ^ <br /> Bromomethane ND 5 0 <br /> n-Butylbenzene ND 2 5 <br /> sec-Butylbenzene ND 2 5 <br /> -tert-Butylbenzene ND 2 5 - ^ <br /> Carbon tetrachloride s ND 2 5 <br /> --Chlorobenzene- - -- - - -- --- - -- ND-- -2 5 - - -- - -- - -- „-- - - - „ - - - - ------ -- - -- <br /> Chloroethane ND 25 <br /> Sequoia Analytical -Sacramento The results in this report apply to the samples analyzed in accordance with the chain or <br /> custody document Unless otherwise stated results are reported on a wet weight bases ' <br /> This analytical report must be reproduced in its entirety <br /> Page 83 of 119 , <br />