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t <br /> Sequoia 819 Striker Avenue 8 <br /> Sacramento, 95834 <br /> 4 (916))9 95821-96pq <br /> X)Wo Analytical FAX(916)921-Oloo <br /> www sequoialabs tom <br /> SECOR International-Rancho Cordova Project TOSCO 11192, Stockton,CA <br /> 3017 Kilgore Road, Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA 95670 Protect Manager Rusty Benkosky 12/18/01 Is 10 <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 /> _#jar V�-7„(SI12DZ8-04)Air rnipled,_12/Q3/Q1 12,0Q Received12/04/01 08 45 - <br /> Ethanol ND 100 mg/ml Air 1 1L14008 12/13/01 12/13/01 EPA 8260B <br /> tert-Butyl alcohol ND 20 <br /> Methyl tert-butyl ether(MTBE) 220 050 ” ^ <br /> Di-isopropyl ether ND 050 <br /> Ethyl tert-butyl ether ND 050 " ^ <br /> tert-Amyl methyl ether 14 050 " ^ <br /> 1,2-Dtchloroethane ND 050 <br /> Ethylene dibronude ND 050 " ^ <br /> Surrogate Dibromolluoromethane 99% 50-150 " <br /> Surrogate 1,2-Dtchloroethane-d4 131 % 50-150 <br /> EFF#1 (S112028-05)Air Sampled 12/03/01 11 55 Received 12/04/0108 45 <br /> Ethanol ND 100 mg/ml Air 1 11-14008 12/13/01 12/13/01 EPA 8260B <br /> tert-Butyl alcohol ND 20 <br /> Methyl tert-butyl ether(MTBE) 20 050 <br /> Di-tsopropyI ether ND 050 " ^ ^ • <br /> Ethyl tert-butyl ether ND 050 <br /> tert-Amyl methyl ether ND 050 " ^ <br /> 1,2-Dichloroethane ND 050 " <br /> Ethylene dibronude ND 050 <br /> Surrogate Dibromo/luoromethane 101 % 50-150 <br /> Surrogate 12-Dichloroethane-d4 133% 50-150 <br /> LU#MW-3(5112028-06)Air Sampled 12/03/01 14 30 Received 12/04/0108.45 _ <br /> Ethanol ND 5000 mg/m'Air 50 1L14008 12/13/01 I2/13/01 EPA 8260B <br /> tert-Butyl alcohol ND 1000 <br /> Methyl tert-butyl ether(MTBE) 240 25 <br /> Di-isopropyl ether ND 25 <br /> Ethyl tert-butyl ether ND 25 <br /> tert-Amy]methyl ether ND 25 <br /> 1,2-Dtchloroethane ND 25 <br /> Ethylene dibrotmde ND 25 " <br /> Surrogate Drbromol7uoromethane 93% 50-150 <br /> Surrogate 12-Dtchloroethane-d4 102% 50-150 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain• <br /> of custody document This analytical report must be reproduced in its entirety <br /> Page Page 5 of 10 <br />