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Sequoia 819 Sinker Ave Ste 4 <br /> Sacramentoto CA 9588 34 <br /> Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> www sequoialabs cam <br /> Geological Technics,Inc Project Cardoza 5412155 <br /> ' 1101 7th Street Pro3ect Number 662 2 Reported <br /> Modesto CA,95354 Project Manager Joseph Angulo 12/21/04 12 02 <br /> Gasoline\BTEXIOxygenates by EPA method 8260B <br /> ' <br /> Sequoia Analytical- Sacramento <br /> Reportmg <br /> Analyte Result Limit Units Dilunan Batch Prepared Analyzed Method Note <br /> ' EW-2(5412155-03)Water Sampled 12/06/04 00 00 Received 12/07/0412 00 <br /> Tert-butyl alcohol 190 50 ug(l 10 4120235 12/19/04 12/20/04 EPA 8260B <br /> Methyl tert-butyl ether 990 50 " <br /> ' <br /> Di-isopropyl ether ND 50 ;r " <br /> Ethyl tert-butyl ether ND 50 " <br /> Tert-amyl methyl ether 52 50 " <br /> 1,2-Dichloroethane ND 50 " <br /> ' 1,2-Dibromoethane(EDB) ND 50 <br /> Benzene ND 5 0 " <br /> Ethylbenzene ND 5 0 " <br /> Toluene ND 5 0 " <br /> Xylenes(total) 12 5 0 <br /> Gasoline Range Organics(C4-C12) 1200 500 " <br /> .Surrogate 12-DCA-d4 99% 60-140 " <br /> Wurrogate Toluene-d8 101% 60-140 <br /> urrogate 4-BFB 103% 60-140 <br /> EW-2(5412155-04)Water Sampled 12/07/04 08 00 Received 12/07/04 12 00 <br /> Tert-butyl alcohol 150 50 ug/1 10 4120235 12/19/04 12/20/04 EPA 8260B <br /> Methyl tert-butyl ether 910 5 0 " <br /> Di-isopropyl ether ND 5 0 <br /> Ethyl tert-butyl ether ND 5 0 " <br /> ' Tert-amyl methyl ether ND 5 0 <br /> 1,2-Dichloroethane ND 5 0 " <br /> 1,2-Dibromoethane(EDB) ND 50 " <br /> Benzene ND 50 " <br /> ' Ethylbenzene ND 50 <br /> Toluene ND 50 " <br /> Xylenes(total) ND 50 " <br /> ' Gasoline Range Organics(C4-C12) 1000 500 <br /> Surrogate 12-DCA-d4 96% 60-140 <br /> Surrogate Toluene-d8 109% 60-140 " <br /> Surrogate 4-BFB 106% 60-140 " <br /> 1 <br /> ' <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed 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 he reproduced to as enttmty <br /> Page 6 of 12 <br />