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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento )9 9600 9 <br /> 5934 <br /> (916)921 9600 <br /> 00 <br /> Analytical www <br /> seq 6 alabs 921 c m <br /> www sequoialabs cora <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 Dflution Batch Prepared Analyzed Method Notes <br /> SB-1 na,30'(S112270-06)Sod Sampled 1211210100 00 Received 12/17/01 16 46 _ <br /> Ethanol ND 25 mg/kg 100 - 1L26009 12/26/01 12/26/01 EPA 9260B <br /> tert-Butyl alcohol ND 25 " <br /> Methyl tert-butyl ether(MTBE) 094 0 10 " <br /> Di-isopropyl ether ND 010 " <br /> Ethyl tert-butyl ether ND 010 " <br /> I,2-Dichloroethane ND 010 " <br /> tert-Amyl methyl ether ND 0 10 " <br /> 112-Dibronmoethane ND 010 " <br /> Surrogate Dibromofluoromethane 107% 50-150 <br /> Surrogate 12-Dichloroethane-d4 125% 50-150 " <br /> SB-1 (a,35'(5112270-07)Soil Sampled 12/12/0100 00 Received 12/17/01 16 46 <br /> Ethanol ND 25 mg/kg 100 1 L26009 12/26/01 12/26/01 EPA 8260B <br /> tert-Butyl alcohol ND 25 " <br /> Methyl tert-butyl ether(MTBE) 053 0 10 " <br /> a1-isopropyl ether ND 0 10 <br /> thyl tert-butyl ether ND 0 10 " <br /> 1,2-Dichloroethane ND 010 " <br /> tert-Amyl methyl ether ND 0 10 " <br /> 1,2-Dibromoethane ND 010 " <br /> Surrogate Dibromofluoromethane 108% 50-150 <br /> Surrogate 1 2-Dichloroethane-d4 127% 50-150 <br /> SB-1 (a,38'(5112270-08)Soil Sampled 12/12/010000 Received 12/17/011646 <br /> Ethanol ND 25 mg/kg 100 1L26009 12/26/01 12/26/01 EPA 8260E <br /> tert-Butyl alcohol ND 25 " <br /> Methyl tent-butyl ether(MTBE) ND 010 <br /> Di-isopropyl ether ND 010 " <br /> Ethyl tert-butyl ether ND 010 " <br /> 1,2-Dichloroethane ND 010 " <br /> tert-Amyl methyl ether ND 0 10 " <br /> 112-Dibromoethane ND 010 " <br /> Surrogate Dibromofluoromethane 108% 50-150 " <br /> Surrogate 1 2-Dichloroethane-d4 125% 50-150 <br /> I <br /> equola 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 to its entirety <br /> Page Page 16 of 27 <br />