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Sequoia 819 Sento Ave Ste e <br /> Sacramento CA 95834 <br /> (916)921 9600 <br /> Analytical FAXequoi labsc00 <br /> www sequoialabs coni <br /> Geological Technics,Inc Project Cardoza 5412155 <br /> 1101 7th Street Project Number 662 2 Reported <br /> Modesto CA,95354 Project Manager Joseph Angulo 12/21/04 12 02 <br /> Gasoline\BTEXIOxygenates by EPA method 8260B-Quality Control <br /> tSequoia Analytical- Sacramento <br /> Reporting Spike source %REC RPD <br /> Analyte Result Limit units Level Result %REC Limits RPD Limit Notes <br /> ' Batch 4120235-EPA 5030B [P/TI/EPA 8260B <br /> Blank(4120235-BLKI) Prepared 12/17/04 Analyzed 12/18/04 <br /> ' Ethanol ND 50 ugll <br /> Tert-butyl alcohol ND 50 <br /> Methyl tert-butyl ether ND 050 <br /> Dr-isopropyl ether ND 050 " <br /> ' Ethyl tert-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 <br /> 1,2-Dichlormthane ND 050 " <br /> ' 1,2-Dibromoethane(EDB) ND 050 <br /> Benzene ND 050 <br /> Ethylbenzene ND 050 <br /> Toluene ND 050 " <br /> �ylcnes(fatal) ND 050 <br /> asolme Range Organics(C4-C12) ND 50 <br /> Surrogate 12-DCA-d4 974 100 97 60-140 <br /> ' Surrogate Toluene-d8 100 li 100 100 60-140 <br /> Surrogate 4 BFB 110 100 110 60-140 <br /> Blank(4120235-BLK2) Prepared 12/19/04 Analyzed 12/20/04 <br /> ' Ethanol ND 50 ugll <br /> Tert-butyl alcohol ND 50 " <br /> Methyl tert-butyl ether ND 050 " <br /> Di-isopropyl ether ND 050 " <br /> ' Ethyl tert-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 <br /> 1,2-Dichloroethane ND 050 " <br /> 1,2-Dibromoetiiane(EDB) ND 050 1' <br /> Benzene ND 050 <br /> Ethylbemene ND 050 <br /> Toluene ND 050 " <br /> ' Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C4-C]2) ND 50 " <br /> Surrogate 12-DCA-d4 987 100 99 60 140 <br /> Surrogate Toluene d8 Il 0 100 110 60-140 <br /> Surrogate 4-BFB 106 100 106 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 in its entirety <br /> Page 9 of 12 <br />