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819 Striker Ave Ste 8 <br /> ickSequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> 14w— I Analytical FAX(916)921-4100 <br /> www sequoislabs cam <br /> ' Geological Technics,Inc Project.Cardoza S412258 <br /> 1101 7th Street Project Number6622 Reported <br /> ' Modesto CA,95354 Project Manager-Joseph Angulo 12/23/0412 28 <br /> GasolinelBTEXIOxygenates by EPA method 8260B <br /> ' <br /> Sequoia Analytical-Sacramento <br /> Reportmg <br /> Analyte Result Limit Units Dilution Batch Prepared Anaf)r Method No] <br /> ' EW-1(5412258-01)Water Sampled 12/07/0416 00 Received 12/09/0412 20 <br /> Tert-butyl alcohol ND 10 ug/l 2 4120262 12/21/04 12/21/04 EPA 8260B <br /> Methyl tert-butyl ether 200 10 ^ ^ ^ <br /> Di-isopropyl ether ND 10 <br /> ' Ethyl tert-butyl ether ND 10 <br /> Tert-amyl methyl ether ND 10 <br /> 1,2-Dichloroethane ND 10 <br /> 1,2-Dibromoethane(EDB) ND 10 " <br /> Benzene ND 10 <br /> Ethylbenzene ND 10 <br /> Toluene ND 10 <br /> Xylenes(total) 12 10 <br /> Gasoline Range Organics(C4-Cl2) 220 100 <br /> Surrogate 1 2-DCA-d4 100% 60-140 ^ ^ <br /> Surrogate Toluene-d8 108% 60-140 ^ ^ <br /> IVarrogate 4-BFB 99% 60-140 " ^ <br /> EW-1(S412258-02)Water Sampled 12107/04 00 00 Received 12/09/0412 20 <br /> ' Tert-butyl alcohol ND 10 ug/l 2 4120262 12/21/04 12/21/04 EPA 6260B <br /> Methyl tert-butyl ether 190 10 " <br /> Di-isopropyl ether ND 10 " <br /> Ethyl tert-butyl ether ND 10 <br /> Tert-amyl methyl ether ND 10 ^ ^ ^ <br /> 1,2-Dichloroethane ND 10 + <br /> 1,2-Dibromoethane(EDB) ND 10 ^ <br /> Benzene ND 10 ^ ^ <br /> Ethylbenzene ND 10 ' <br /> Toluene ND 10 ^ <br /> Xylenes(total) ND 10 <br /> Gasoline Range Organics(C4-02) 250 100 <br /> ' Surrogate 1,2-DCA-d4 100% 60-140 <br /> Surrogate Toluene-d8 90% 60-140 " <br /> Surrogate 4-BFB 99% 60-140 " <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 be reproduced m its entirely <br /> Page 5 of 13 <br />