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DrSequoia Hilt <br /> Jarvis <br /> Main NiBt CA 9503377 <br /> (408)7769600 <br /> Analytical <br /> FAX(408)782308 <br /> %wa.wgwia1abs.= <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: Vern 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 /> DI-1(N"0673-07)Soil Sampled: 10/22/02 12.15 Received:10/22/0216:30 <br /> Total Xylenes NO 1.2 ug/kg 2.4400000 2129036 10/28/02 10/29/02 EPA 9260B <br /> Benzene ND 1.2 " <br /> Ethylbenzene ND 1.2 <br /> Toluene ND 1.2 " <br /> Surrogate:Dibromofluoramethane 103% 60-140 " <br /> Surrogate:1,1-Dichloroethane-d4 104% 60-140 " <br /> Surrogate:Toluene-d8 82.2% 60-140 " <br /> Surrogate:4-Bromofluorobenzene 93.0% 60-140 " <br /> tert-Butyl alcohol NO 49 2.4400000 0-10 <br /> Methyl cert-butyl ether NO 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 " <br /> Surrogate:1,2-Dichloroethane-d4 104% 60-140 " <br /> DI-2(11II.J0673-08)Soil Sampled: 10/22/02 12:20 Received: 10/22/02 16:30 <br /> r. Total Xylenes ND 0.94 ug/kg 1.8899999 2J28036 10/28/02 10/29/02 EPA 82608 <br /> Benzene ND 0.94 P. " " <br /> Ethylbenzene ND 0.94 " <br /> Toluene ND 0.94 " <br /> Surrogate:Dibromofluoromethane 104% 60-140 " <br /> Surrogate:1,2-Dichloroethane-d4 103% 60-140 " <br /> Surrogate:Toluene-d8 88.0% 60-140 " <br /> L Surrogate:4-Bromofluorobenzene 101 % 60-140 " <br /> tert-Butyl alcohol ND 38 1.8899999 0-10 <br /> Methyl tert-butyl ether NO 0.94 " " <br /> i <br /> Di-isopropyl ether NO 0.94 " <br /> Ethyl tent-butyl ether NO 0.94 " <br /> tert-Amyl methyl ether NO 0.94 " <br /> Surrogate:1,2-Dichloroethaned4 103% 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 /> r <br /> 9of16 <br />