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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento 9 <br /> (9l6))9 92l 9600 9600 <br /> 00 <br /> Analytical wwseqFAX 6ialabs om <br /> . www sequoialabs coni <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- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> SB-1 A 64 Si 12270-15 Water Sampled 12/1210100 00 Received 12/17/01 16 46 <br /> Tert-butyl alcohol ND 50 ug/1 1 1120289 12/26/01 12/26/01 EPA 8260B <br /> Methyl tent-butyl ether 130 050 " <br /> Di-isopropyl ether ND 050 " <br /> Ethyl tert-butyl ether ND 050 " <br /> Tert-amyl methyl ether ND 050 " <br /> Ethanol ND 50 " <br /> 1,2-Dichloroethane ND 050 " <br /> Ethylene dibromide ND 050 <br /> Surrogate 1 2-DCA-d4 130% 60-140 " <br /> MW-5 35' 5112270-40 Sod Sampled 12/14/0100 00 Received 12/17/01 16 46 <br /> Tert-butyl alcohol ND 10 mg/kg 1 1120279 12/21/01 12/21/01 EPA 8260B <br /> Methyl tert-butyl ether ND 0 10 " <br /> Di-isopropyl ether ND 010 " <br /> Ethyl tert-butyl ether ND 0 10 " <br /> Wert-amyl methyl ether ND 0 10 <br /> thanol ND 150 <br /> 1,2-Dichloroethane ND 010 " <br /> Ethylene dibromide ND 010 " <br /> Surrogate 1 2-DCA-d4 114% 60-140 <br /> MW-5 @ 45'(5112270-42)Soil Sampled 12/14/01 00 00 Received 12/17/0116 46 _ <br /> Tert-butyl alcohol ND 10 mg/kg 1.. 1120279 12/21/01 12/22/01 EPA 8260B <br /> Methyl tert-butyl ether ND 0 10 " <br /> Di-isopropyl ether ND 010 " <br /> Ethyl tert-butyl ether ND 0 10 " <br /> Tert-amyl methyl ether ND 0 10 " <br /> Ethanol ND 150 " <br /> 1,2-Dichloroethane ND 010 " <br /> Ethylene dibromide ND 010 " <br /> Surrogate 1 2-DCA-d4 110% 60-140 " <br /> &Sequoia Analytical- Sacramento The results in 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 10 of 27 <br />