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819 Sinker Ave Ste 8 <br /> Sequoia Sacramento C 95834 <br /> (916)921-9600 <br /> (D , <br /> S nalytic l FAX(916)921 0100 <br /> .7 www sequotataos com <br /> Gettler-Ryan-Petaluma Project Tosca 11 192, Stockton,CA 5212192 • <br /> 1364 N McDowell Blvd Ste B2 Project Number N/A Reported <br /> Petaluma CA,94954 Project Manager Dave Vossler 12/20/02 14 03 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-13 (65')(S212192-01)Soil Sampled 12/06/020755 Received 12/10/020915 <br /> Tert-butyl alcohol ND 0 050 mg/kg 1 2120184 12/13/02 12/14/02 EPA 8260B <br /> Methyl tert-butyl ether ND 00050 " <br /> Di-isopropyl ether ND 00050 " <br /> Ethyl tert-butyl ether ND 00050 " <br /> Tert-amyl methyl ether ND 00050 " <br /> Ethanol ND 020 " <br /> 1,2-Dichloroethane ND 00050 " <br /> 1,2-Dtbromoethane(EDB) ND 00050 " <br /> Surrogate 12-DCA-d4 108% 60-140 " <br /> MW-13 10 5' S212192-02 Soil Sampled 12/06/02 08 05 Received 12/10/02 09 15 <br /> Tert-butyl alcohol ND 0 050 mg/kg 1 2120184 12/13/02 12/14/02 EPA 8260E <br /> Methyl tert-butyl ether ND 00050 " <br /> Di-tsopropyl ether ND 00050 <br /> Ethyl tent-butyl ether ND 00050 " <br /> Tert-amyl methyl ether ND 00050 <br /> Ethanol ND 020 " <br /> 1,2-Dichloroethane ND 00050 " <br /> 1,2-Dtbromoethane(EDB) ND 00050 " <br /> Surrogate 12-DCA-d4 97% 60-140 " <br /> Sequoia Analytical - Sacramento The results in thrs 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 4 of 10 <br />