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404 N Wiget Lane <br /> Walnut Geek,CA 94598 <br /> Sequoia (925)988-9600 <br /> FAX(925)988-%73 <br /> Analytical www sequoialabs Com <br /> ttler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0123 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 20-Jul-0O 11 19 <br /> Volatile organic Compounds by EPA Method 8010B <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Lmmt Units Dilution Batch Prepared Analyzed Method Notes <br /> U-0(W006495-07)Water Sampled 19-0un-0012 05 Received 20-Jun-00 17 30 <br /> Chloromethane ND 20 ugA 1 0003007 03-JW-M 03-Jul-00 EPA 8010B <br /> Vinyl chloride ND 10 <br /> Bromomethane ND 10 <br /> Chloroethane <br /> ND 10 <br /> Trichlorofluoromethane <br /> ND 050 <br /> Freon 113 ND 10 <br /> ^ " ^ <br /> 1,1-Dichloroethene ND 10 <br /> Methylene chloride ND 10 " <br /> trans.l,2-Dichloroethene ND 10 <br /> 1,1-Dichloroethane ND 10 <br /> cis-1,2-Dichloroethene 13 10 <br /> Chloroform ND 10 " <br /> 1,1,1-Trichloroethane ND 10 <br /> Carbon tetrachloride ND 10 <br /> Dichloroethane ND 20 <br /> lWhloroethene ND 10 <br /> 1,2-Dichloropropane ND 10 <br /> Bromodtchloromethane ND 10 " <br /> cis-1,3-Dichloropropene ND 10 <br /> trans-l,3-Dichloropropene ND 050 " <br /> 1,1,2-Trichloroethane ND 050 „ <br /> Tetrachioroethene 40 to <br /> Dibromochloromethane ND 050 <br /> 1,2 Dibromoethane ND 10 <br /> Chlorobenzene ND 10 " <br /> $romoform ND 050 ^ " <br /> 1,2,3-Tnchloropropane ND 050 " <br /> 1,1,2,2_ ND 050 <br /> Tetrachloroethane <br /> 1,3-Dichlorobenzene ND 050 " <br /> 1,4-Dichlorobenzene ND 10 <br /> 1,2-Dichlorobenzene ND 20 <br /> Surrogate Dtbromodtfluoromedme 100% 50-150 " <br /> Surrogate 4 Bromofluorobenzene 110% 50-150 " <br /> uOla Analytical-Walnut Creek The results in Tins report apply to the samples analpred in aecondmiee with the churn of <br /> custody document.This analytical report must be reproduced in its enWvfy <br /> Page I1 of 20 <br />