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885 Jams Drive <br /> Sequoia Morgan Hill,CA 95037 <br /> (408)7769600 <br /> a— ) <br /> Analytical FAX(408)782-6308 <br /> www sequoialabs con <br /> • URS Corporation[I Project ARCO#4493,Stockton,Ca <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number ARCO#4493,Stockton,CA Reported j <br /> Sacramento CA,95833 Project Manager Vern Elarth 11/11/02 07 04 <br /> Volatile Organic Compounds by EPA Method 82606 <br /> Sequoia Analytical-Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> 4493-STKP ML K0164-01 Soil Sampled 11/06/02 12 05 Received 11/06/02 16 00 <br /> Naphthalene 28 0 83 ug/kg 999996662KO8011 11/08/02 11/08/02 EPA 82608 <br /> n-Propylbenzene ND 0 83 <br /> Styrene ND 083 <br /> 1,1,1,2-Tetrachloroethane ND 083 " <br /> 1,1,2,2-Tetrachloroethane ND 083 " <br /> Tetrachloroethene ND 083 " <br /> Toluene 45 083 <br /> 1,2,3-Tnchlorobenzene ND 083 " <br /> 1,2,4-Tnchlorobenzene ND 083 " ~ <br /> 1,1,1-Tnchloroethane ND 083 " <br /> 1,1,2-Tnchloroethane ND 083 <br /> Tnchloroethene ND 083 " <br /> Tnchlorofluoromethane ND 083 <br /> 1,2,3-Tnchloropropane ND 083 ^ " <br /> 1,2,4-Tnmethylbenzene ND 083 " <br /> 1,3,5-Tnmethylbenzene ND 083 11 R R <br /> Vinyl chlonde ND 083 " <br /> Xylenes(total) ND 083 " <br /> Surrogate Dibromo/luoromethane 104% 60-140 " <br /> Surrogate 1,2-Drchloroethane-d4 928% 60-140 " <br /> Surrogate Toluene-d8 794% 60-140 " <br /> Surrogate 4-Bromolluorobenzene 942% 60-140 " <br /> Ethanol ND 330 99999666 " <br /> tert-Butyl alcohol ND 170 ~ 0-09 <br /> Methyl tert-butyl ether ND 83 ~ <br /> Di-isopropyl ether ND 8 3 " <br /> Ethyl tert-butyl ether ND 93 <br /> tort-Amyl methyl ether ND 83 " " 0-09 <br /> 1,2-Dichloroethane ND 8 3 " <br /> 1,2-Dibromoethane(EDB) ND 83 " ~ <br /> Benzene ND 8 3 " ~ <br /> Toluene ND 8 3 " <br /> Ethylbenzene ND 83 <br /> Xylenes(total) ND 83 <br /> Surrogate 11-Drchloroethane-d4 928% 60-140 " <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> • of custody document This analytical report must be reproduced in its entirety <br /> 5of11 <br />