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Sequoia 885 Jarvis Dr <br /> NlarLmn 1401,CA 95037 <br /> Analytical (408)776-9600 <br /> FAX(408)782-6308 <br /> www.sr;quoialabs.cam <br /> tratus Environmental Inc. Project: ARCO#5469,Stockton,CA MLK0749 <br /> 30 Cameron Park Dr.,Suite 550 Project Number: ARCO 45469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 12/19/02 08:44 <br /> Volatile Organic Compounds by EPA Method 8260E <br /> Sequoia Analytical- Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> CPT 1-42(MLK0749-01)Soil Sampled: 11/19/0215:00 Received: 11/19/02 17:00 A-01 <br /> tert-Butyl alcohol ND 64 ug/kg 3.18 2K30001 11/30/02 12/01/02 EPA 8260B <br /> Methyl tert-butyl ether 130 1.6 „ <br /> Di-isopropyl ether ND 1.6 <br /> Ethyl tert-butyl ether ND 1.6 <br /> tert-Amyl methyl ether ND 1.6 „ 0 09 <br /> 1,2-Dichloroethane ND 1 6 " „ <br /> 1,2-Dibromoethane(EDS) ND 1.6 „ <br /> Surrogate:1,2-Dichloroethane-d4 82,0% 60-140 » <br /> CPT 1-78(MLK0749-02)Soil Sampled: 11/19/02 15:45 Received: 11/19/02 17:00 A-01 <br /> tert-Butyl alcohol ND 83 ug/kg 4.17 2K30001 11/30/02 12/01/02 EPA 8260B <br /> Methyl tert-butyl ether ND 2.1 <br /> Di-isopropyl ether ND 2.1 „ <br /> Ethyl tert-butyl ether ND 2,1 " <br /> tert-Amyl methyl ether ND 2.1 0-09 <br /> 1,2-Dichloroethane ND 21 " <br /> ibromoethane(EDB) ND 2.1 <br /> rogate: 1,2-Dichloroethane-d4 82.2 % 60-140 " <br /> CPT 1-93 (MLK0749-03)Soil Sampled: I1/19/02 16:20 Received: 11/19/02 17:00 A-01 <br /> tert-Butyl alcohol ND 46 ug/kg 2.3 2K30001 11/30/02 12/01/02 EPA 8260B <br /> Methyl tert-butyl ether ND 1.2 „ <br /> Di-isopropyl ether ND 1.2 " <br /> Ethyl tert-butyl ether ND 1.2 <br /> tert-Amyl methyl ether ND 1.2 0=09 <br /> 1,2-Dichloroethane ND 1.2 <br /> 1,2-Dibromoethane(EDB) ND 1.2 <br /> Surrogate: 1,2-Dichloroethane-d4 75.4% 60-140 " <br /> Soia 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 enlirety. <br /> Page 4 of 9 <br />