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819 Stnker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)9219600 <br /> Analytical - <br /> FAX(91b)921 0100 <br /> www sequoialabs com <br /> SECOR International-Rancho Cordova Project Tosco 1205,Lathrop,CA <br /> 3017 Kilgore Road, Suite 100 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 06/14/02 11 28 <br /> BTEX by EPA Method 826OB <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> GP-5(5206079-15)Water Sampled 06/05/0214 10 Received 06/06/0217 35 <br /> Ethanol ND 50 ugA 1 2060151 06/13/02 06/14/02 EPA 8260B <br /> Tert-butyl alcohol ND 50 " <br /> Methyl tert-butyl ether ND 050 " <br /> Di-isopropyl ether ND 050 " <br /> Ethyl tert-butyl ether ND 050 " <br /> Tert-amyl methyl ether ND 050 " <br /> 112-Dichloroethane ND 050 " <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> Benzene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Toluene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Gasoline(C6-C10) ND 50 " <br /> Surrogate Toluene-& 98% 60-140 " <br /> Surrogate 4-BFB 117% 60-140 " <br /> Surrogate 12-DCA-d4 116% 60-140 " <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page Page 7 of 12 <br />