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819 Striker Ave Ste 8 <br /> 7 Sacramento CA 95834 <br /> (916)921 9600 <br /> a 1 Y tic a I FAX(916)921-0100 <br /> www sequoialabs com <br /> • <br /> Landau Associates Project Time Oil S508342 <br /> 130 2nd Avenue South Project Number 231030 010 Reported <br /> Edmonds WA,98020 Project Manager Evelyn Albright 08/25/05 08 24 <br /> Gasolinehg'i,lEXl®xygenates by EPA method 526016- QuaIity Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> i <br /> Analyte Result Limn Units Level Result %RFC Limits RPD Limit Notes <br />,Batch 5080279-EPA 5030B_LP/Tl EPA 8260B <br /> Blank(5080279-BLK1) Prepared 08/21/05 Analyzed 08/22/05 <br /> Ethanol ND 50 ug/1 <br /> teethrt-butyl alcohol ND so <br /> yl <br /> tert-butyl ether ND 050 " <br /> Di-isopropyl ether ND 050 " <br /> ethyl tert-butyl ether ND 050 " <br /> ert-amyl methyl ether ND 050 " <br /> 1,2-Dichloroethane ND 050 " <br /> l 2-Dibromoethane(EDB) ND 050 " <br /> lEthyenzene ND 050 " <br /> lbenzene ND 050 <br /> Toluene ND 050 " <br /> Des(total) ND 050 " <br /> ne Range Organics(C4-C12) ND 50 <br /> Surrogate 12-DC.4-d4 148 100 148 60-140 S01 <br /> urrogate Toluene-d8 125 ;i 100 125 60-140 <br /> urrogate 4-BFB 800 100 80 60-140 <br /> Blank(5080279-BLK2) Prepared 08/20/05 Analyzed 08/21/05 <br /> tthanol ND 50 ug/l <br /> ert-butyl alcohol ND 50 <br /> Methyl tent-butyl ether ND 050 " <br /> t-isopropyl ether ND 050 <br /> thyl tert-butyl ether ND 050 " <br /> ert-amyl methyl ether ND 050 " <br /> 1 2-Dichloroethane ND 050 " <br /> t2-Dibromoethane(EDB) ND 050 " <br /> enzene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> 9 oluene ND 050 <br /> ylenes(total) ND 050 " <br /> Gasoline Range Organics(C4-C12) ND 50 " <br /> urrogate 12-DCA-d4 163 100 163 60-140 Sol <br /> urrogate Toluene-d8 125 100 125 60-140 <br /> Surrogate 4-BFB 802 10 0 80 60-140 <br /> ota 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 8 of 12 <br />