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i <br /> 885 JarvisDrive37 <br /> Sequoia Morgan Hill CA 955037 <br /> (a- 408)776 9600 <br /> ^ Analytical FAX(408)782-6308 <br /> WWW sequoialabs corn <br /> I <br /> cor- Rancho Cordova(ARCO) Project ARCO#2133, Stockton,CA MPCO261 <br /> ]7 Kilgore Rd Suite 100 Project Number Arco#2133, Stockton,CA Reported <br /> ncho Cordova CA,45670 Project Manager Brian Carey 04/04/06 13 28 <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 Note <br /> AS-10-S-15-060227(MPCO261-02RE1)Soil Sampled 02/27/06 08 20 Received 03/04/06 08 00 <br /> tort-Amyl methyl ether ND 00050 mg/kg 1 6C11005 03/11/06 03/12/06 EPA 8260B <br /> Benzene ND 00050 " <br /> tert-Butyl alcohol ND 0 020 " <br /> Di-isopropyl ether ND 00050 " <br /> 1,2-Dibromoethane(EDB) ND 00050 " <br /> 1,2-Dichloroethane ND 00050 " <br /> Ethanol ND 010 " <br /> Ethyl tert-butyl ether ND 00050 " <br /> Ethylbenzene ND 00050 PE <br /> Methyl tert-butyl ether ND 00050 <br /> Toluene ND 00050 " <br /> Xylenes(total) ND 00050 ^ <br /> Gasoline Range Organics(C4-C12) 022 0 10 " <br /> rogate 1 2-Dichloroethane-d4 82% 60-125 " <br /> 0-S-23-060227(MPCO261-03)Soil Sampled 02/27/06 08 47 Received 03/04/06 08 00 <br /> tert-Amyl methyl ether ND 0 025 mg/kg 1 6C 12002 03/12/06 03/13/06 EPA 8260E <br /> Benzene 0 076 0 050 " <br /> tert-Butyl alcohol ND 5 0 " <br /> Di-isopropyl ether ND 0 025 " <br /> 1,2-Dibromoethane(EDS) ND 0 025 " <br /> 2-Dichloroethane ND 0 025 " <br /> Ethanol ND 10 <br /> Ethyl tert-butyl ether ND 0 025 " <br /> Ethylbenzene 11 0 050 <br /> Methyl tert-butyl ether ND 0 025 " <br /> Toluene 028 0 050 " <br /> Surrogate 1 2-Dichloroethane-d4 1120% 60-125 LHAY <br /> Chlorobenzene ND 0 050 " <br /> 12-Dichlorobenzene ND 0 050 " <br /> 1,3-Dichlorobenzene ND 0 050 " <br /> 1 4-Dichlorobenzene ND 0 050 " <br /> Surrogate 4-Bromofluorobenzene 122% 75-120 LHAY <br /> �quoia 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 6 of 20 <br />