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4DSequoia $19StnkerAveste$ <br /> Sacramento CA 95834 <br /> Analytical (916)92] 9600 <br /> FAX(916)92 t-0]00 <br /> www sequoialabs com <br /> Gettler-Ryan-Dublin Project Unocal 5098, Stockton, CA 010 <br /> 6747 Sierra Court,Ste 3 Project Number N/A 5210 <br /> S210 <br /> Dubltn CA, 94568 Project Manager Deanna L Harding 10 Reported <br /> 18 46 <br /> Volatile Organic Compounds by EPA Method $260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit _Llnrts- Dilution Batch Prepared Analyzed Method Notes <br /> MW-11 5210010-13 Water Sampled 09/23/02 11 50 Received 09/26/02 18 35 <br /> 1,2,3-trimethylbenxene 550 500 ug/l 100 2100065 10!05/02 10/05/02 EPA 8260B <br /> l-ethyl-2-methylbenzene 620 500 <br /> 2-methyl-l-butene 530 500 <br /> 2-methylbutane 840 500 " •. „ <br /> Cyclohexane 620 500 <br /> Cyclopentene 860 500 <br /> Methyleyclobutane 790 500 " <br /> Methylcyclopentane 980 500 <br /> Benzene 10000 50 <br /> „ <br /> Bromobenzene ND 50 <br /> Bromochloromethane ND 50 " <br /> Bromodichloromethane ND 50 <br /> „ <br /> Bromoform ND 50 „ - <br /> Bromomethane ND 100 <br /> n-Butylbenzene ND 50 <br /> sec-Butylbenzene _ ND 54 <br /> tent-Butylbenzene ND 50 <br /> Carbon tetrachloride ND 50 „ <br /> Chlorobenzene ND 50 " <br /> Chloroethane ND 50 <br /> Cntoroform ND 50 �- <br /> Chloromethane— ND 50 - - --„--- -„- --_ -- <br /> 2-Chlorotoluene ND 50 „ <br /> 4_Chlorotoluene -ND <br /> Dibromochloromethane ND 50 ” <br /> 1,2-Dibromoethane(EDB) - --- - ND - - x-50- - <br /> Dibromomethane ND 50 ” <br /> 1,2-Dtbromo-3-chloropropane ND 100 <br />__I,2:,Dichloro benzene. - _ _ _.., ---...__ND- _ __ ---50- <br /> 1,3-Dichlorobenzene ND 50 <br /> 1,4-Dichlorobenzene ND 50 <br /> Dichlorodifluoromethane ND 50- <br /> 1,I-Dichloroethane ND 50 <br /> 1,2-Dichloroethane ND 50 " - <br /> 1,1-Dichloroethene ND 50 " <br /> cis-1,2-Dich loroethene ND 50 <br /> trans-1,2-Dichloroethene ND 50 <br /> 1,2-Dichloropropane _ - ND 50 <br />_ I,3-Dtchloropropane NDS0 „ <br /> 2,2-Dtchl6ropropane ND 50 <br /> „ <br /> Sequoia Analytical - Sacramento The results in this i eport apply to the samples analyzed in accordance with the chain of <br /> custody document Unless other"'Ise stated results are reported on a wet weight basis <br /> This analytical repoi t must be reproduced to its entirety <br /> Page 49 of 119 ' <br />