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819 Stoker Avenue,SuiteI <br /> Se U®ia • • <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical alyticaI www.sequoialabs.com <br /> Sierra-Pacific Groundwater,Inc. Project: Unocal Puregro Broadway <br /> 4911 Windplay Drive,Ste.4 Project Number: N/A Reported: <br /> EI Dorado Hills CA,95762 Project Manager: John Rapp 06/15/01 16:23 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Walnut Creek <br /> Reparting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-18(5105461-01)Soil Sampled: 05/3010100:00 Received: 05/31/0116:55 <br /> Ethanol <br /> 5/31/0116:55Ethanol ND 25 mg/kg 100 1FO5001 06/05/01 06/05/01 EPA 8260B <br /> tert-Butyl alcohol ND 2.5 " <br /> Methyl tert-butyl ether ND 0.10 <br /> Di-isopropyl ether ND 0.10 " <br /> Ethyl tert-butyl ether ND 0.10 " <br /> 1,2-Dichloroethme ND 0.10 " <br /> tert-Amyl methyl ether ND 0.10 " <br /> 1,2-Dibromoethme ND 0.10 " <br /> Surrogate:Dibromofluoromethane 92.8% 50-150 " <br /> Surrogate: 1,2-Dichloroetham-d4 90.4% SO-150 " <br /> Dichlorodifluoromethane ND 0.10 " <br /> Chloromethane ND 0.20 " <br /> Vinyl chloride ND 0.20 <br /> Bromomethane ND 0.50 " <br /> Chloroethane ND 0.20 " <br /> Trichlorofluoromethane ND 0.20 " <br /> 1,1-Dichloroethene ND 0.20 " <br /> Methylene chloride ND 1.0 " <br /> Methyl tert-butyl ether ND 0.20 " <br /> trans-1,2-Dichloroethene ND 0.25 " <br /> 1,1-Dichloroethane ND 0.10 " <br /> 2,2-Dichloropropane ND 0.20 " <br /> cis-1,2-Dichloroethene ND 0.20 " <br /> Bromochloromethane ND 0.25 " <br /> Chloroform ND 0.10 " <br /> 1,1,1-Trichloroethane ND 0.20 <br /> Carbon tetrachloride ND 1.0 " <br /> 1,1-Dichloropropene ND 0.20 " <br /> Benzene ND 0.20 " <br /> 1,2-Dichloroethane ND 0.10 " <br /> Trichloroethene ND 0.25 <br /> 1,2-Dichloropropane ND 0.25 " <br /> Dibromomethane ND 0.25 <br /> Bromodichloromethane ND 0.20 <br /> cis-1,3-Dichloropropene ND 0.20 " <br /> Toluene ND 0.50 " <br /> Vans-1,3-Dichloropropene ND 0.20 " <br /> 1,1,2-Trichloroethane ND 0.25 " <br /> Tetrachloroethene ND 0.10 <br /> 1,3-Dichloropropane ND 0.20 <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 4 of 19 <br />