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si 9 Striker Ave Ste 8 <br /> Sequoia Sacramen%CA 95834 <br /> ' (916)921-99600 <br /> Analytical FAX(916)92i-01 <br /> www sequoialahs corn <br /> • <br /> ' <br /> F <br /> logical Technics,Inc Prosect Marci Property 5412285 <br /> 1 7th Street project Number[none] Reported <br /> desto CA,95354 Protect Manager Joseph Angulo 12/28/0417 54 <br /> GasolinelBTEX\Oxygenates by EPA method 8260B-Quality Control <br /> ' Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4120282-EPA 5030B [PIT /EPA 8260B <br /> Blank(4120282-BLK1) Prepared 12/21/04 Analyzed 12/22/04 <br /> Ethanol ND 50 ug/l <br /> ' Tert-butyl alcohol ND 50 <br /> Methyl tort-butyl ether ND 050 <br /> Di-isopropyl ether ND 050 " <br /> Ethyl tert butyl ether ND 050 <br /> Tort amyl methyl ether ND 050 <br /> 1,2-Dichloroethane ND 050 " <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> ' Benzene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050IRMC. " <br /> asoline Range Organics(C4-C12) ND 50 " <br /> EPWSurrogate 1,1-DCA-d4 934 100 93 60-140 <br /> Surrogate Toluene-d8 966 100 97 60-140 <br /> Surrogate 4-BFB 101 100 101 60-140 <br /> Blank(4120282-BLK2) Prepared 12/22/04 Analyzed 12/23/04 <br /> Ethanol ND 50 ugli <br /> Ten-butyl alcohol ND 50 " <br /> Methyl tert-butyi ether ND 050 " <br /> Do-isopropyl ether ND 050 " <br /> Ethyl Cert-butyl ether ND 050 " <br /> ' Tert-amyl methyl ether ND 050 ; <br /> 1,2-Dichloroethane ND 050 <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> ' Benzene ND 050 "Ethylbenzene ND 050 ;1 <br /> Toluene ND 050 <br /> Xylenes(total) - ND 050 <br /> ' Gasoline Range Organics(C4-Cl 2) ND 50 " <br /> Surrogate 12-DCA d4 896 " 100 90 60-140 <br /> Surrogate Toluene-d8 107 100 107 60-140 <br /> Surrogate 4-BFB 997 100 100 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 10 of 16 <br />