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Sequoia 819 SenAvc Ste 8 <br /> (D (916) <br /> Secramento io CA 45834 <br /> 921-9600 ` <br /> v4WAnalytical FAX(916)921-0100 <br /> www sequoialabs cam <br /> Gettler-Ryan-Dublin Project Unocal 5098,Stockton,CA 5210410 <br /> 6747 Sierra Court, Ste J Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 10/14/02 1146 <br /> GasolinelBTEXIOxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-19D (5210010-24)Water Sampled 09/23/02 12_2.3Received 09/26/02 18 35 <br /> Tert-butyl alcohol ND 50 UO 1 2100085 10/05/02 10/05/02 EPA 8260B _ <br /> Methyl tert-butyl ether ND - 0 50 <br /> Dl-isopropyl ether ND 050 <br /> Ethyl tert-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 <br /> 1,2-Dichloroethane 052 0 50 <br /> 1,2-D3bromoethane(EDB) ND 050 " <br /> Benzene 2 7 050 " <br /> Ethylbenzene ND 0 50 <br /> Toluene 089 0 50 " <br /> Xylenes(total) 1 1 0 50 " <br /> Surrogate Toluene-d8 115 % 60-140 <br /> Surrogate 4-BFB J17% 60-140 " <br /> Surrogate 1,1-DCA-d4 116% 60-140 " <br /> MIV-215 5210010-25 Water Sampled 09/221021655 Received 09/26/0218 35 <br /> Ter -butyl alcohol ND 5 0 ugA 1 2100066 10/03/02 10/04/02 EPA 8260E <br /> Methyl tert-butyl ether ND 0 50 " <br /> Di-isopropyl ether ND 050 <br /> _ Fflivi tPrt_hi,tyl Pther Nn 0 50 <br /> Tert-amyl methyl ether ND 0 50 " <br /> 1;2=Dichloroethane —ND 0 50 " <br /> 1,2-Dibromoethane(EDB) ND 0 50 <br /> - Benzene - -- --- --- - ND ---050 - - -- - -- „ --- - - - - - <br /> - Ethylbenzene ND 050 " <br /> Sur rogate Toluene-d8 111 % 60-140 - <br /> Surrogate 4-BFB 113 % 60-140 <br /> Surrogate 1,1-DCA-d4 _ ___ _ �___ _ __ _ �_ _110% 60-140 <br /> Sequoia Analytical - Sacramento The results in this report apply to the samples analvzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be r eproduced in its entirety <br /> Page 21 of 119 <br />