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8l9 Sinker Ave Ste 8 <br /> (D— Sequoia Sacramento CA 95834 <br /> (916)921-9600 <br /> FAX(916)92 1-0 100 <br /> .r www sequoialat,s com <br /> lei-Ryan-Petaluma Project Tosco 11192,Stockton,CA 5212235 <br /> N McDowell Blvd Ste B2 Project Number NIA Reported <br /> Petaluma CA 94954 Project Manager Jed Douglas 02/05/03 11 52 <br /> Industrial Solvents by EPA Method 8015B modified- Quality Control <br /> Sequoia Analytical -Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Bate-h 2L16013-EPA 3810 Headspace <br /> Blank(2L16013-BLKI) Prepared&Analyzed 12/16/02 <br /> Methanol ND 100 ug/l <br /> Surrogate 1 peatanol 2520 2500 101 62-129 <br /> Laboratory Control Sample(2L16013-1351) Prepared&Analyzed 12/16/02 <br /> Methanol 960 100 ug/l 1000 960 68-130 <br /> Surrogate 1 pentanol 2750 112500 110 62-129 <br /> Matrix Spike 2L16013-MSI) Source MLL0377-01 Prepared&Analyzed 12/16/02 <br /> Methanol 1150 100 ug/l 1000 ND 115 68-130 <br /> nate 1 pentanol 2660 112500 106 62-129 <br /> Matrix Spike Du (2LI6013-MSDI) Source MLL0377-01 Prepared&Analyzed 12/16/02 <br /> Methanol 1150 100 ug/l 1000 ND 115 68-130 000 19 <br /> Surrogate 1 pentanol 2610 112500 104 62-129 <br /> ola Analytical- Sacramento Die results in this report apply to the samples analy_i din accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> Tins analytical report must be reproduced in its entiri tv <br /> Page 13 of 14 <br />