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519 Sinker Ave Ste 8 <br /> D Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> ► Analytical FAX(916)921-0100 <br /> www sequoialabs com <br /> ttler-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA S301506 <br /> 40 Gold Camp Dr,Ste 170 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager Geoffrey D Risse 02/06/03 18 03 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021E- Quality Contr <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result L,umt Units Level Result %REC Lunits RPD Limit Notes <br /> Batch 3010538-EPA 5030B(P/T) <br /> Matrix S ip ke Dup(3010538-MSD1) Source 5301531-07 Prepared&Analyzed 01/3t/03 <br /> Methyl tert-butyl ether 744 20 ug/t 100 ND 74 60-140 11 25 <br /> Surrogate a a a-Trfluorotoluene 971 100 97 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 staled results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 8 of 9 <br />