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819 Striker Avenue,Sulte 8 <br /> ® Sequoia • . Sacramento,CA 95834 <br /> ee.-,, (916)921-9600 <br /> woAnalytical FAX(916)921-0100 <br /> A <br /> nalytic l www.sequolalabs.com <br /> Sierra-Pacific Groundwater,Inc. Project: Unocal Puregro Broadway <br /> 4911 Windplay Drive,Ste.4 Project Number: N/A Reported: <br /> El Dorado Hills CA,95762 Project Manager: John Rapp 06/15/01 16:23 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Resalt %REC Limits RPD Limit Notes <br /> Batch 1FO5001-EPA 5030B(MeOM <br /> Blank(1F05001-BLKI) Prepared&Analyzed:06/05/01 <br /> Dichlorodifluoromethane ND 0.10 mg/kg <br /> Ethanol ND 25 " <br /> Chloromethane ND 0.20 " <br /> tert-Butyl alcohol ND 2.5 " <br /> Methyl tert-butyl ether ND 0-10 " <br /> Vinyl chloride ND 0.20 " <br /> Bromomethane ND 0.50 " <br /> Di-isopropyl ether ND 0.10 <br /> Chloroethane ND 0.20 <br /> Ethyl tert-butyl ether ND 0.10 " <br /> 1,2-Dichloroethane ND 0.10 " <br /> Trichlorofluoromethane ND 0.20 " <br /> tert-Amyl methyl ether ND 0.10 " <br /> 1,2-Dibromoethme ND 0.10 " <br /> 1,1-Dichloroethene ND 0.20 " <br /> Methylene chloride ND 1.0 " <br /> Methyl Cert-butyl ether ND 0.20 " <br /> trans-l,2-Dichloroethene ND 0.25 " <br /> 1,1-Dichloroethane ND 0.10 <br /> 2,2-Dichloropropene 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-Dichloropropene ND 0.25 " <br /> Dibmmometrane ND 0.25 <br /> Bromodichloromethane ND 0.20 " <br /> cis-1,3-Dichloropropene ND 0.20 " <br /> Toluene ND 0.50 " <br /> trans-1,3-Dichloropropene ND 0.20 " <br /> 1,1,2-Trichloroethane ND 0.25 " <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 10 of 19 <br />