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404 N.Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> (925)488-9600 <br /> Analytical FAX(916)988-9673 <br /> www.sequoialabs.com <br /> Gettler Ryan,Inc.-Dublin Project: Tosco <br /> 6747 Sierra Court Suite J Project Number: Tosco#1]195 Reported: <br /> Dublin CA,94568 Project Manager: Doug Lee 14-Jun-02 09:37 <br /> GasolinelBTEXIOxygenates 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 2060079-EPA 5030B JP/T] <br /> Blank(2060079-BLK1) Prepared&Analyzed:07-Jun-02 <br /> Ethanol ND 0.20 mg/kg <br /> Tert-butyl alcohol ND 0.050 " <br /> Methyl tert-butyl ether ND 0.0050 " <br /> Di-isopropyl ether ND 0,0050 " <br /> Ethyl tert-butyl ether ND 0.0050 " <br /> Tert-amyl methyl ether ND 0.0050 " <br /> 1,2-Dichloroethane ND 0.0050 " <br /> 1,2-Dibromoethane(EDB) ND 0.0050 " <br /> Benzene ND 0.0050 " <br /> Ethylbenzene ND 0.0050 " <br /> Toluene ND 0.0050 " <br /> Xylenes(total) ND 0.0050 " <br /> Gasoline(C6-C 10) ND 1.0 <br /> Surrogate:1,2-DCA-d4 0.0499 0.0500 100 60-140 <br /> Surrogate:Toluene-d8 0.0500 0.0500 100 60-140 ~ <br /> Surrogate:4-BFB 0.0591 0.0500 118 60-140 <br /> LCS(2060079-BSI) Prepared&Analyzed:07-Jun-02 <br /> Methyl tert-butyl ether 0.0418 0.0050 mg/kg 0.0436 96 60-140 <br /> Benzene 0.0272 0.0050 0.0268 101 70-130 <br /> Toluene 0.177 0.0050 0.162 109 70-130 <br /> Gasoline(C6-C10) 2.04 1.0 2.20 93 70-130 <br /> Surrogate:1,2-DCA-d4 0.0483 0.0500 97 60-140 <br /> Surrogate:Toluene-d8 0.0498 0.0500 100 60-140 <br /> Surrogate:4-BFB 0.0531 0.0500 106 60-140 <br /> Matrix Spike(2060079-MSI) Source:W206020-91 Prepared&Analyzed:07-Jun-02 <br /> Methyl tert-butyl ether 0.0436 0.0050 mg/kg 0.0436 ND 97 60-140 <br /> Benzene 0.0276 0.0050 0.0268 ND 102 60-140 <br /> Toluene 0.179 0.0050 0.162 ND 110 60-140 <br /> Gasoline(C6-C10) 2.05 1.0 2.20 ND 93 60-140 <br /> Surrogate:1,2-DCA-d4 0.0492 0.0500 98 60-140 <br /> Surrogate:Toluene-d8 0.0512 0.0500 104 60-140 <br /> Surrogate:4-BFB 0.0566 0.0500 113 60-140 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chc-..'. } <br /> custody document.This analytical report must be reproduced in its enter-: . <br /> Page 5 of 7 <br />