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819 Sinker Avenue Suite 8 <br /> Sequoia Sacramento )9 95834 <br /> (915)921-96009600 <br /> FAX 0100 <br /> DAw Analyticalwww sequoialabs corn <br /> SECOR International-Rancho Cordova Project TOSCO 8671,Stockton,CA <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 01/14/02 15 16 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> SB-1 (a,63'(5112270-14)Soil Sampled 12/12/0100 00 Received 12/17/01 16 46 _ <br /> Ethanol ND 25 mg/kg 100 1L26009 12/26/01 12/26/01 EPA 8260B <br /> tert-Butyl alcohol ND 25 " <br /> Methyl tert-butyl ether(MTBE) ND 0 10 " <br /> Di-isopropyl ether ND 0 10 " <br /> Ethyl tert-butyl ether ND 0 10 " <br /> 1,2-Dichloroethane ND 0 10 " <br /> tert-Amyl methyl ether ND 010 " <br /> 1,2-Dibromoethane ND 010 " <br /> Surrogate Dibromofluoromethane 102% 50-150 <br /> Surrogate 12-Dichloroethane-d4 122% 50-150 " <br /> Sequoia Analytical- Sacramento The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page Page 17 of 27 <br />