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L <br /> BBS Jarvis Dr <br /> IDSequoia Main Hill,CA 95037 <br /> iW Analytical (468)776-9600 <br /> FAX(408)776-6300 <br /> Ir www.sequoialabs.can <br /> URS Corporation[11 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 /> r <br /> PB-5(MLJ0673-05)Soil Sampled: 10/22/02 12:05 Received: 10/22/02 16:30 <br /> Total Xylenes ND 1.4 ug/kg 2.8199999 2128036 10/28/02 10/29/02 EPA 8260B <br /> Benzene ND 1.4 " <br /> Ethylbenzene ND 1.4 " <br /> Toluene ND 1.4 " <br /> Surrogate:DibromoJluoromethane 106% 60-140 " <br /> Surrogate:1,1-Dichloroethane-d4 105% 60-140 " <br /> Surrogate:Toluene-d8 84.4% 60-140 " <br /> Surrogate:4-Bromofluorobenzene 92.8% 60-140 " <br /> tert-Butyl alcohol ND 56 2.8199999 0-10 <br /> L' Methyl tent-butyl ether ND 1.4 " <br /> Di-isopropyl ether ND 1.4 <br /> Ethyl cert-butyl ether NO 1.4 " <br /> tert-Amyl methyl ether ND 1.4 " <br /> Surrogate:1,1-Dichloroethane-d4 105% 60-140 " <br /> PB-6(MLJ0673-06)Soil Sampled:10/22/02 12:10 Received:10/22/02 16:30 <br /> r Total Xylenes ND 1.6 ug/kg 3.2100000 2728036 10/28/02 10/29/02 EPA 8260B <br /> Benzene ND 1.6 " " <br /> Ethylbenzene ND 1.6 " <br /> Toluene ND 1.6 <br /> 1r <br /> Surrogate:DibromoJluoromethane 98.4% 60-140 " <br /> Surrogate:1,1-Dichloroethaned4 101 % 60-140 " <br /> Surrogate:Toluene-d8 83.0% 60-140 " <br /> L Surrogate:4-BromoJluorobenzene 95.2% 60-140 " <br /> tert-Butyl alcohol 1600 64 000003814 0-10 <br /> Methyl tert-butyl ether ND 1.6 " <br /> L <br /> Di-isopropyl ether ND 1.6 " <br /> Ethyl cert-butyl ether ND 1.6 " <br /> tert-Amy)methyl ether ND 1.6 " <br /> Surrogate:1,1-Dichloroethane44 101 % 60-140 " <br /> r <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 /> 8of16 <br />