ARCHIVED REPORTS_XR0005758 CASE 2

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�� 819 Straker Avenue Suite Sequoia Sacramento CA 958344 (916)921-9600 FAX(916)92 1-0 100 Analytical www sequoialabs com SECOR International-Rancho Cordova Project Arco 6020, Manteca CA 3017 Kilgore Road,Suite 100 Project Number N/A Reported Rancho Cordova CA,95670 Project Manager Rusty Benkosky 02/16/01 12 59 Volatile Oxygenate Compounds by EPA Method 8260A Sequoia Analytical - Sacramento Reporting Anaivte Result Linul Units Dilution Batch Prepared Analyzed Method Notes MW-7@20'(5102065-17)Soil Sampled 01/30/01 15 05 Received 02/02/01 12 28 Tert-butyl alcohol ND 100 mg/kg 1 1020089 02/08/01 02/09/01 EPA 8260A Methyl tert-butyl ether ND 0 100 Di-isopropyl ether ND 0 100 " Ethyl tert-butyl ether ND 0 100 Tert-amyl methyl ether ND 0 100 1,2-Dtchloroethane ND 0100 " Ethylene dtbromide ND 0 100 " ISurrogate 1 2-DCA-d4 912% 60-140 " MW-7@30'(5102065-19)Soil Sampled 01/30/01 15 31 Received 02/02/01 12 28 Tert-butyl alcohol ND 100 mg/kg 1 1020089 02/08/01 02/09/01 EPA 8260A Methyl tert-butyl ether ND 0 100 Di-isopropyl ether ND 0 100 " 10 tert-butyl ether ND 0 100 " myl methyl ether ND 0 100 1,2-Dtchloroethane ND 0 100 " Ethylene dtbromide ND 0 100 " ' Surrogate 12-DCA-d4 972% 60-140 " MW-7@35'(S102065-20)Soil Sampled 01/30/01 15 35 Received 02/02/01 12 28 ITert-butyl alcohol ND 100 mg/kg 1 1020089 02/08/0) 02/09/01 EPA 8260A Methyl tert-butyl ether 0 109 0 100 " Di-isopropyl ether ND 0 100 Ethyl tert-butyl ether ND 0 100 Tert-amyl methyl ether ND 0 100 1,2-Dtchloroethane ND 0100 " Ethylene dtbromide ND 0 100 ' Surrogate 1 2-DCA-d4 904% 60-140 r ow Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chats of custody document Thts analytical report must be reproduced in its cnuret) 12 of 21