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i <br /> 885 Jarvis Dr <br /> Sequoia Morgan Hili,CA 95037 <br /> (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> www.scquoialabs.com <br /> tratus Environmental Inc. Project: ARCO 95469,Stockton,CA MLK0749 <br /> 30 Cameron Park Dr.,Suite 550 Project Number: ARCO#5469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager; Jay Johnson 12/19/02 08:44 <br /> Volatile Organic Compounds by EPA Method 8260B <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: 11/19/02 15:00 Received: 11/19/02 17:00 _ A-01 <br /> tart-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(EDB) 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: 11119/0217:00 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 /> I,2-Dichloroethane ND 2.1 " <br /> Iftibromoethane(EDB) ND 2.1 „ <br /> rogate: 1,2-Dichloroethane-d4 82.2 % 60-140 -- <br /> CPT 1-93 (MLK0749-03)Soil Sampled: 11/19/02 16:20 Received: 11/19_10_217:00 A-01' <br /> tert-Bury]alcohol ND 46 ug/kg 2.3 2K30001 11/30/02 12/01/02 EPA 6260B <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 /> Sfia 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 niust be reproduced in its entirety. <br /> Page 4 of 9 <br />