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Sequoia Sa519 r Ave Ste 8 <br /> cramentoentoCA 9834 <br /> Analytical��r1CB (916)921-9600 <br /> r FAX(916)921-4100 <br /> uww sequotalahs cam <br /> ettler-Ryan Petaluma Project Tosco 6981,Stockton,CA S301510 <br /> 1364 N McDowell Blvd Ste 82 Project Number N/A Reported <br /> Petaluma CA,94954 Project Manager Dave Vossler 02/06/03 18 15 <br /> Gasolme1B MOxygenates by EPA method 8260B - Quality Control <br /> Sequoia Analytical- Sacramento <br /> i <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3020058-EPA 5030B [PIT] <br /> Matrix Spike Dup(3020058-MSDI) Source 5301611-02 Prepared 02/05/03 Analyzed 02/06/03 <br /> Benzene 11 4 050 ngll 13 6 ND 84 70-130 09 25 <br /> Toluene 73 1 050 834 ND 88 70-130 0 1 25 <br /> Methyl tent butyl ether 244 050 224 5 3 85 60-140 5 25 <br /> Gasoline(C6-C10) 819 50 1100 ND 74 60-140 0 25 <br /> Surrogate 1 2-DCA-d4 319 250 128 60-140 <br /> Surrogate Toluene-d8 269 250 108 60-140 <br /> Surrogate 4-BFB 278 250 111 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed iii accordance x rth the chain of <br /> cwtodv document Unless other ti ise stated results are r eported on a wet xeight basis <br /> This analytical i epos i must be i epi oduced in its entry ery <br /> Page 5 of 6 <br />