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f � <br /> Sequoia 885 Jarvis Drive <br /> 41) 1 Morgan Hill,CA 95037 <br /> ijUp Analytical <br /> (408)776-6300 <br /> R ly FAX(408)782-6306 <br /> www.sequoialabs.com <br /> URS Corporation[Arcol] Proi-t:ARCO#2168,Stockton,CA MOK0609 <br /> 2870 Gateway Oaks Dr.,Ste 300 Project Number:GOC81-0010 Reported: <br /> Sacramento CA,95833 Project ManagerNernon P.Eiarth 11/28/05 15:22 <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 Note <br /> EW-13-20(MOK0609-01)Soil Sampled: 11/08/05 08:55 Received: 11/11/05 07:30 <br /> tert-Amyl methyl ether ND 0.0039 mg/kg 0.78 5K16007 11/16/05 11/16/05 EPA 8260B <br /> Benzene ND 0.0039 " <br /> tert-Butyl alcohol 0.26 0.016 <br /> Di-isopropyl ether ND 0.0039 " <br /> 1,2-Dibromoethane(EDB) ND 0,0039 <br /> 1,2-Dichloroethane ND 0.0039 <br /> Ethanol ND 0.078 " " 1C <br /> Ethyl tert-butyl ether ND 0.0039 " I <br /> Ethylbenzene ND 0.0039 " 1 <br /> Methyl Cert-butyl ether ND 0.0039 " <br /> Toluene ND 0.0039 <br /> Xylenes(total) 0.018 0.0039 <br /> Gasoline Range Organics(C4-C12) 0.62 0.078 <br /> Surrogate:1,2-Dichloroethane-d4 112% 60-125 <br /> EW-8-20(MOK0609-02)Soil Sampled: 11/08/05 11:25 Received:11/11/05 07:30 <br /> tert-Amyl methyl ether ND 0.0042 mg/kg 0.84 SK17013 11/17/05 11/17/05 EPA 8260B <br /> Benzene ND 0.0042 <br /> tert-Butyl alcohol ND 0.017 <br /> Di-isopropyl ether ND 0.0042 <br /> - l romoethane(EDB) ND 0.0042 <br /> 1,2-Dichloroethane ND 0.0042 11 ii „ ii <br /> Ethanol ND 0.084 1C <br /> Ethyl tert-butyl ether ND 0.0042 " <br /> Ethylbenzene ND 0.0042 <br /> Methyl tert-butyl ether 0.0045 0.0042 " <br /> Toluene ND 0.0042 <br /> Xylenes(total) ND 0.0042 <br /> Gasoline Range Organics(C4-C12) ND 0.084 " <br /> Surrogate: 1,1-Dichloroethane-d4 116% 60-125 <br /> i <br /> Seglsoia 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 /> F <br /> t <br /> r <br /> Page 3 of 9 <br /> I� <br />