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/ "`� Sequoia 885 Jarvis Drive <br /> '"���/.^��! Morgan Hill,CA 95037 <br /> Analytical (408)776-9600 <br /> FAX(408)782-6308 <br /> ' www.scquoialabs.com <br /> URS Corporation[ArcotI Project:ARCO#2168,Stockton,CA MOK0822 <br /> _ 2870 Gateway Oaks Dr.,Ste 300 Project NumberGOC81-0010 Reported; <br /> ' Sacramento CA,95833 ProjectManager:Vernon P.Elarth 11/28/05 16:55 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Morgan Hill <br /> r Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> EW-9-20(MOK0822-02)Soil Sampled:11/11/05 09:40 Received: 11/15/05 07:30 <br /> tert-Amyl methyl ether ND 0.0037 mg/kg 0.74 5K21014 11/21/05 11/21/05 EPA 8260B <br /> Benzene ND 0.0037 <br /> tert-Butyl alcohol ND 0.015 <br /> Di-isopropyl ether ND 0.0037 " <br /> 1,2-Dibromoethane(EDB) ND 0.0037 <br /> 1,2-Dichloroethane ND 0.0037 " <br /> Ethanol ND 0.074 <br /> Ethyl tort-butyl ether ND 0.0037 <br /> Ethylbenzene ND 0.0037 " <br /> Methyl tert-butyl ether ND 0.0037 <br /> Toluene ND 0.0037 <br /> Xylepes(total) ND 0.0037 <br /> Gasoline Range Organics(C4-C12) ND 0.074 <br /> Surrogate: 1,2-Dichloroethane-d4 91% 60-125 <br /> EW-4-25(MOK0822-03)Soil Sampled: 11/11/05 13:10 Received:11/15/05 07:30 <br /> tent-Amyl methyl ether ND 0.025 mg/kg 1 5K22027 11/22/05 11/23/05 EPA 8260B <br /> Benzene ND 0.050 <br /> tert-Butyl alcohol ND 5.0 <br /> } Di-isopropyl ether ND 0.025 " <br /> 1,2-Dibromoethane(EDB) ND 0.025 « <br /> 1,2-Dichloroethane ND 0.025 <br /> Ethanol ND 10 <br /> Ethyl tert-butyl ether ND 0.025 <br /> Ethylbenzene ND 0.050 <br /> Methyl tert-butyl ether ND 0.025 <br /> Toluene ND 0.050 « <br /> Xylenes(total) ND 0.050 " <br /> Gasoline Range Organics(C4-C12) 8.1 2.5 <br /> y Surrogate: 1,2-Dichloroethane-d4 115% 60-125 " <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 entirely. 1 <br /> Page 3 of 9 <br /> f <br />