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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento CA 95834 <br /> _�— (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www sequotalabs com <br /> SECOR International-Rancho Cordova Project Tosco 1205,Lathrop,CA <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 07/02/02 16 44 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Morgan H111 <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> GJ!-8.(S206351-03)Water 5arrinled 06/21/02 12 20 Received.06/24/02 15 00 <br /> Ethanol ND 4000 ug/1 100 2F30002 06/30/02 07/01/02 EPA 8260E <br /> tcrt-Butyl alcohol ND 2000 " <br /> Methyl tert-butyl ether 230 50 <br /> Dr-isopropyl ether ND 50 " <br /> Ethyl tert-butyl ether ND 50 ^ <br /> tert-Amyl methyl ether ND 50 " <br /> 1,2-Dtchloroethane ND 50 " <br /> Ethylene dtbrormde ND 50 " <br /> Benzene 110 50 <br /> Toluene ND 50 ^ <br /> Ethylbenzene 740 50 <br /> Total Xylenes 1300 56 <br /> Gasoline Range Organics(C6-C10) 15000 5000 <br /> Surrogate 12-.Dtchloroethane-d4 111 % 60-140 " <br /> GP-9(S206351-04)Water Sampled 06/21/02 13 20 Received 06/24/02 15_00 <br /> Ethanol ND 40 ug/1 1 21730002 06/30/02 07/01/02 EPA 8260B <br /> tert-Butyl alcohol ND 20 " <br /> Methyl tert-butyl ether 22 050 " ^ <br /> Dr-isopropyl ether ND 050 <br /> Ethyl tert-butyl ether ND 050 ^ <br /> tert-Amyl methyl ether ND 050 " <br /> 1,2-Dtchloroethane ND 050 ^ <br /> Ethylene dibronude ND 050 " <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene 096 050 " <br /> Total Xylenes 12 050 <br /> Gasoline Range Organics(C6-C10) ND 50 ^ <br /> Surrogate 12-Dichloroethane-d4 111 % 60-140 " <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed to accordance with the chain <br /> of custody document This analytical report must be reproduced to its entirety. <br /> Page Page 3 of 6 <br />