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819 Striker Ave Ste 8 <br /> Sacramento CA 95834 <br /> y (916)921 9600 <br /> :til } k is FAX(916)921 0100 <br /> 10 - www sequotalabs com <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 /> Gasoline\BTEX\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 5080279-EPA 5030B (P/TJ1 EPA 8260B <br /> Matrix Spike Dup(5080279-MSDI) Source S508341-07 Prepared 08/21/05 Analyzed 08/22/05 <br /> Methyl tert butyl ether 193 050 ug/l 432 ND 45 60-140 3 25 QM02 <br /> enzene 113 050 268 ND 42 70-130 9 25 QM02 <br /> Toluene 810 050 152 ND 53 70-130 6 25 QM02 <br /> Gasoline Range Organics(C4-C12) 1240 50 2200 ND 56 60-140 8 25 QM02 <br />,Surrogate 1 2-DCA-d4 152 I, 100 152 60-140 Sol <br /> Surrogate Toluene-d8 126 100 116 60-140 <br /> Surrogate 4-BFB 8 15 100 82 60 140 <br /> Batch 5080306-EPA 5030B [P/TJ /EPA 8260B <br /> Blank(5080306-BLKI) Prepared&Analyzed 08/22/05 <br /> Ethanol ND 50 ug/I <br /> Owl <br /> tyl alcohol ND 50 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 /> 12-Dibromoethane(EDB) ND 050 " <br /> tBenzene ND 050 <br /> , <br /> thylbenzene ND 050 " <br /> Toluene ND 050 " <br /> tylenes(total) ND 050 <br /> asol ine Range Organics(C4-C12) ND 50 <br /> Surrogate 12-DCA-d4 153 100 15.3 60-140 Sol <br /> rurrogate <br /> rrogate Toluene-d8 124 100 114 60-140 <br /> 4-BFB 793 100 79 60-140 <br /> oia Analytical- Sacramento The results in this report apply to the samples analy ed 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 12 <br />