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l <br /> Sequoia 885 Jarvis Drive <br /> 5037 <br /> Analytical <br /> ]�7 Morgan Hill,CA 95037 <br /> Anal.]tical FAX(408)782-6306 <br /> jj www,sequoialabs.com <br /> URS Corporation[Arcot] Project:ARCO 42168,Stockton,CA MOK0900 <br /> 2870 Gateway Oaks Dr.,Ste 300 Project Number:GOC81-0010 Reported: <br /> Sacramento CA,95833 Project ManageuVernon P.Elarth 11/30/05 12:28 <br /> Volatile Organic Compounds by EPA Method 826013 <br /> Sequoia Analytical-Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed yzed Method Note <br /> EW-16-20(MOK0900-06)Soil Sampled:11/15/05 10:20 Received:11/17/05 08:30 <br /> t tert-Amyl methyl ether ND 0.0044 mg/kg 0.88 5K23041 11/23/05 11/24/05 EPA 8260B <br /> Benzene ND 0.0044 <br /> tert-Butyl alcohol ND 0.018 <br /> Di-isopropyl ether ND 0.0044 <br /> 1,2-Dibromoethane(EDB) ND 0.0044 " <br /> 1,2-Dichloroethane ND 0.0044 <br /> t Ethanol ND 0.088 " <br /> ( Ethyl tert-butyl ether ND 0.0044 <br /> Ethylbenzene ND 0.0044 <br /> Methyl tert-butyl ether ND 0.0044 <br /> Toluene ND 0.0044 <br /> Xylenes(total) ND 0.0044 <br /> Gasoline Range Organics(C4-C12) ND 0.088 <br /> Surrogate: 1,2-Dichloroethane-d4 89% 60-125 " <br /> x EW-17-20(MOK0900-07)Soil Sampled:11/15/05 13:05 Received: 11/17/05 08:30 <br /> ter-Amyl methyl ether ND 0.0042 mg/kg 0.85 5K23041 11/23/05 11/24/05 EPA 8260B <br /> Benzene ND 0.0042 <br /> tert-Butyl alcohol ND 0.017 <br /> Di-isopropyl ether ND 0.0042 " <br /> 1,2-Dibromoethane(EDB) ND 0.0042 " <br /> 1,2-Dichloroethane ND 0.0042 <br /> � Ethanol ND 0.085 <br /> Ethyl tert-butyl ether ND 0.0042 <br /> Ethylbenzene ND 0.0042 " <br /> Methyl tert-butyl ether ND 0.0042 <br /> Toluene ND 0.0042 <br /> Xylenes(total) ND 0.0042 <br /> Gasoline Range Organics(C4-C12) ND 0.085 " <br /> .Surrogate:1,2-Dichloroethane-d4 85% 60-125 <br /> J <br /> 1 <br /> i <br /> [ <br /> Morgan Sequoia Analytical-Mor Hill <br /> - � $ 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 5 of 12 <br /> l . <br />