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Road <br /> Sequoia r an IrlosCAl4070 <br /> �""w.� ' San Carlos C.4 94070 <br /> Analytical (650)232 9600 <br /> PAX(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 45098, Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 07/01/02 07 46 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- San Carlos <br /> -- Reporting - - <br /> Analyte Result Lirnit Units Dilution Batch Prepared Analyzed Method Notes ' <br /> MW-7(L206021-08)Water Sampled 06/10/021531 Received 06/11/02 18 05 _� -_ <br /> Benzene _ ND 2 0 ug/l - 1 �__ 2060032 06/20/02 06/21/02 EPA 8260B <br /> Bromobenzene ND 2 0 <br /> Brornoch lorom ethane ND 2 0 <br /> Bromodichloromethane ND 2 0 <br /> Bromoform ND 2 0 <br /> Bromomethane ND 5 0 " « <br /> n-Butylbenzene ND 2 0 <br /> sec-Buty]benzene ND 2 0 " <br /> Tert-butylbenzene ND 2 0 ^ ^ <br /> Carbon tetrachloride ND 2 0 " <br /> Chlorobenzene ND 2 0 ^ <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 2 0 <br /> Dibromochloromethane ND 2 0 " <br /> 1,2-Dibromoethane ND 2 0 " <br /> Dibromomethane ND 2 0 " <br /> 1,2-Dibromo-3-chloropropane ND 5 0 ^ ^ <br /> =1;2-Dichlorobenzene —ND=-- �2 -- <br /> 1,3-Dichlorobenzene ND 2 0 ^ " <br /> X1;4=13ichlorobenzene--- - —NDS --- - 2 0—'L -^— <br /> --Dichlorodifluoromethane ND 5 0 " <br /> 1,1-Dichloroethane - -ND- -" 20 - <br /> 1,2-Dichloroethane ND 2 0 <br /> 1,1-Dichloroethene ND 2 0 " <br /> " cts-1;2-Dichloroethene` _� ---- _- ND-- -20--' <br /> trans-1,2-Dichloroethene - ND 2 0 <br /> 1,2-Dichloropropane ND 2 0 " <br /> 1,3-Dichloropropane ND 2 4 " ^ <br /> 2,2-Dichloropropane ND 2 0 ^ ^ <br /> 1,1-Dichloropropene ND 2 0 ' <br /> Ethylbenzene ND 2 0 ^ " <br /> Hexachlorobutadiene ND 20 " <br /> Isopropylbenzene ND 2 0 " <br /> -p-Isopropyltoluene - ND -20 - <br /> I Methylene chloride �- _ _ _ r _ _- - -- ND-- _ --5 0 - <br /> Naphthalene ND 5 0 " <br /> n-Propylbenzene ND 20 <br /> Sequoia Analytical -San Carlos The results to this report apply to the samples analyzed in accordance with the chain of ' <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 20 of 103 ' <br />