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885 Jarvis DrSequoia MaVm Hi0,CA 95037 <br /> Analytical FAX(4408)782308 <br /> www.mquoialabs.can <br /> URS Corporation[I I Project: ARCO#434 MLJ0673 <br /> 2870 Gateway Oaks Dr.,Ste 300 Project Number: ARCO#434 Reported: <br /> Sacramento CA,95833 Project Manager: Vem Elarth 11/12/02 10:24 <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 /> PB-1(MLJ0673-01)Soil Sampled: 10/22/02 11:40 Received:10/22/02 16:30 <br /> Total Xylenes ND 1.1 ug/kg 2.2599999 2128036 10/28/02 10/28/02 EPA 8260B <br /> Benzene ND 1.1 " <br /> Ethylbenzene ND 1.1 " <br /> Toluene ND Ll " <br /> Surrogate:Dibromofluoromethane 109% 60-140 " <br /> Surrogate:1,2-Dichloroethane-d4 98.0% 60-140 " <br /> Surrogate: Toluene-d8 85.0% 60-140 " <br /> Surrogate:4-BromoJluorobenzene 96.4% 60-140 " <br /> tert-Butyl alcohol ND 45 " 2.2599999 0-10 <br /> Methyl ter[-butyl ether ND 1.1 " <br /> Di-isopropyl ether ND 1.1 " <br /> Ethyl tert-butyl ether ND 1.1 " <br /> tert-Amyl methyl ether ND 1.1 <br /> " <br /> Surrogate: 1,2-Dichloroethane-d4 98.0% 60-140 " <br /> PB-2(MLJ0673-02)Soil Sampled:10/22/02 11:45 Received:10/22/02 16:30 <br /> Total Xylenes ND 1.4 ug/kg 2.7200000 2128036 10/28/02 10/28/02 EPA 8260B <br /> Benzene ND 1.4 <br /> Ethylbenzene ND 1.4 " <br /> Toluene ND 1.4 " <br /> Surrogate:Dibromofluoromethane 106% 60-140 " <br /> Surrogate: 1,1-Dichloroethane-d4 103% 60-140 " <br /> Surrogate: Toluene-d8 89.8% 60-140 " <br /> Surrogate:4-BromoJluorobenzene 95.8% 60-140 " <br /> tert-Butyl alcohol ND 54 2.7200000 0-10 <br /> Methyl tert-butyl ether ND 1.4 " <br /> Di-isopropyl ether ND 1.4 " <br /> Ethyl tert-butyl ether ND 1.4 " <br /> tert-Amyl methyl ether ND 1.4 " <br /> Surrogate:1,2-Dichloroethane-d4 103% 60-140 " <br /> Sequoia 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 /> 6of16 <br />