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Sp 885 Jarvis Drive <br /> equoia Morgan Hill,CA 95037 <br /> (408)776-9600 <br /> Analytical <br /> FAX equoi labs.c 08 <br /> wwwsequoialabs.com <br /> l F} <br /> URS Corporation[ArcoI] Project:ARCO#2168,Stockton,CA MOK0900 <br /> 2870 Gateway Oaks Dr.,Ste 300 Proj ect Number:GOC81-0010 Reported: <br /> Sacramento CA,95833 Project Manager.Vemon P.Elarth 11/30/05 12:28 <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 /> MW-11-20(MOK0900-03)Soil Sampled: 11/14/05 13:50 Received:11/17/05 08:30 <br /> t tent-Amyl methyl ether ND 0.0043 mg/kg 0.86 5K28012 11/28/05 11/28/05 EPA 8260B <br /> Benzene ND 0.0043 11 " " " <br /> tert-Butyl alcohol ND 0.017 <br /> Di-isopropyl ether ND 0.0043 <br /> 1,2-Dibromoethane(EDB) ND 0.0043 <br /> 1,2-Dichloroethane ND 0.0043 <br /> E" Ethanol ND 0.086 " <br /> Ethyl tort-butyl ether ND 0.0043 <br /> Ethylbenzene ND 0.0043 <br /> Methyl tort-butyl ether ND 0.0043 <br /> r[ Toluene ND 0.0043 " <br /> _ t Xylenes(total) ND 0.0043 " « <br /> Gasoline Range Organics(C4-C12) ND 0.086 <br /> Surrogate: 1,2-Dichloroethane-d4 77% 60-115 " <br /> 4 EW-15-20(MOK0900-04)Soil Sampled: 11/15/0508:20 Received: 11/17/05 08:30 <br /> tert-Amyl methyl ether ND 0.0042 mg/kg 0.85 5K23041 11/23/05 11/24/05 EPA 8260B <br /> E1 <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 /> j Ethanol ND 0.085 <br /> Ethyl tert-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) ND 0.085 <br /> Surrogate: 1,2-Dichloroethane-d4 84% 60-125 <br /> Fj <br /> f <br /> fi <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 /> ih F <br />` Page 4 of 12 <br />