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4 <br /> 885 Jarvis Drive <br /> Sequoia Morgan Hill,CA 95037 <br /> Analytical (408)7 -9600 <br /> FAX(408)782-6308 <br /> Iwowwwscquoialabs.coe.com <br /> URS Corporation[Arco!] Project:ARCO#2168,Stockton,CA MOK0321 <br /> t7—, 2870 Gateway Oaks Dr.,Ste 300 Project NumbccGOC8 t-0010 Reported: <br /> - <br /> Sacramento CA,95833 Project Manager:Vemon P.Elarth 11/23/05 12:41 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Morgan Hill <br /> F Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note <br /> i <br /> FEW-3-20(MOK0321-01)Soil Sampled: 11/0410508:50 Received: 11/08/05 09:45 <br /> tert-Amyl methyl ether ND 0.0037 mg/kg 0.74 5KI 1009 11/11/05 11/11/05 EPA 8260E <br /> Benzene ND 0.0037 " <br /> G 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 11 ii ii IC <br /> 4 Ethyl tent-butyl ether ND 0.0037 <br /> Ethylbenzene ND 0.0037F, " <br /> Methyl tert-butyl ether ND 0.0037 " <br /> Toluene ND 0.0037 <br /> Xylenes(total) ND 0.0037 <br /> Gasoline Range Organics(C4-C12) ND 0.074 <br /> Surrogate.'1,2-Dichloroethane-d4 80% 60-125 " <br /> f :t EW-5-20(MOK0321-02)Soil Sampled:1110410511:30 Received: 11/08/05 09:45 <br /> tert-Amyl methyl ether ND 0.0042 mglkg 0.85 5K11009 11/11105 11/11/05 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 /> r Ethanol ND 0.085 " " " „ " " IC <br /> Ethyl Cert-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) 0.39 0.085 " <br /> { Surrogate: 1,2-Dichloroethane-d4 75% 60-125 <br /> r- <br /> F <br /> F! Sequoia Analytical-Morgan Dill The results in this report apply to the samples analyzed in accordance with the chain of <br /> i custody document. Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> I F, <br /> i Page 3 of 12 <br /> i F <br />