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819 Sinker Ave Ste 8 <br /> D Sequoia Sacramento,GA95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www sequoialabs com <br /> t <br /> er-Ryan-Rancho Cordova Project Former Unocal 0187,Stockton,CA 5301506 <br /> Gold Camp Dr,Ste 170 Project Number N/A Reporter!ho Cordova CA,95670 Project Manager Geoffrey D Rtsse 02/06/03 18 03 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U-3(S301506-07)Water_ Sampled 01/23/03 08 11 Received 01/23/03 14 25 <br /> Purgeable Hydrocarbons 150 - 50 T ug/l 1 3010538 02/05/03 02/06/03 EPA 8015/8021 <br /> Benzene 33 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene 0 51 050 " <br /> Xylenes(total) 2 1 050 " <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate a,a,a-Trifluorotoluene 92% 60-140 FF " <br /> oia 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 5 of 9 <br />