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e q u o a 885 Jarvis Dr <br /> AnVp' Megan Hi4,CA 95037 <br /> � � .0 a (408)776-9600 <br /> FAX(408)782-6308 <br /> www-sequoialabs.can <br /> EOCarneron <br /> Environmental Inc. Project: ARCO#5469,Stockton,CA <br /> Park Dr., Suite 550 Project Number: ARCO#5469,Stockton,CA ML10441 <br /> ark CA,95682 Reported: <br /> Project Manager: Jay Johnson 01/07/03 12:15 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Mo1-gan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW--1 (MLL0441-01)Water Sam ]ed:1111/02 09:29 Received- 12/11/02 12:00 <br /> tert-Butyl alcohols <br /> 20 ugll 1 2L20026 12/19/02 12/20/02 EPA 8260B <br /> Methyl Cert-butyl ether 7.2 0.50 ,+ <br /> Di-isopropyl ether ND 0.50 <br /> Ethyl tert-butyl ether ND 0.50 ^ ^ <br /> Cert-Amyl methyl ether ND 0.50 „ <br /> 1,2-Dichloroethane ND 0.50 „ <br /> 1,2-Dibromoethane(EDB) ND 0 50 ^ " <br /> Surrogate:1,2-Dichloroethane-d4 111% 78-129 <br /> N TW-2(MLL0441-02)Water Sampled:12/11/02 09.55 Received: 12/11/02 12:00 <br /> Cert-Butyl alcohol Nb <br /> Methyl tert-butyl ether 20 Ug/1 1 2L20026 12/19/02 12/20/02 EPA 82608 <br /> ND 0.50 <br /> Di-isopropyl ether ND 0.50 ^ <br /> Ethyl tert-butyl ether ND 0.50 n ^ <br /> tert-Amyl methyl ether ND 0.50 ^ „ <br /> 1*-Dibrornoethane <br /> 2-Dichloroethane ND 0.50 " <br /> (EDB) ND 0.50rogate:1,2-Dichloroethane-d4 115% 78-129 <br /> MW-3 (MLL0441-03)Water Sampled:12/11/02 09:14 Received: 12/11/02 12:00 <br /> Cert-Butyl alcohol <br /> ND 20 ug/1 1 2L20026 12/19/02 I2/20/02 EPA 82603 <br /> Methyl tert-butyl ether 2.1 0.50 ^ <br /> Di-isopropyl ether ND 0.50 " <br /> Ethyl tert-butyl ether ND 0.50 ^ ^ <br /> tent-Amyl methyl ether ND 0.50 <br /> 112-Dichloroethane ND 0.50 „ <br /> I,2-Dibrornoethane(EDB) ND 0.50 ^ ^ ^ <br /> Surrogate:1,2-Dichloroethane-d4 110% 78-129 — <br /> aoia Analytical -Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. Unless otherwise stated, results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety. <br /> Page 8 of 20 <br />