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819 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> Analytical FAX(915) 921 9600 <br /> (916)921-010 <br /> Gettler-Ryan-Dublin Project Former Unocal 5098,Stockton,CA S212135 <br /> 6747 Sierra Court,Ste 3 Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/27/02 14 14 <br /> Volatile Organic Compounds by EPA Method 8260B -Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting - - Spike Source %REC RPD <br /> lAnalyte Result Limit Units Level Result %REC Limits RPD Lunit Notes <br /> Batch 2120234-EPA 5030B[P/TJ <br /> _Blank(2120234-BLK1) Prepared&Analyzed 12/16/02 <br /> Benzene ND 050 ug/1 <br /> Bromobenzene ND D 50 " <br /> Tert-butyl alcohol ND 100 <br /> Bromochloromethane ND 0 50 " <br /> Methyl tert-butyl ether ND 20 <br /> Bromodichloromethane ND 050 " <br /> Di-isopropyl ether ND 20 <br /> Bromoform ND 050 " <br /> Ethyl tert-butyl ether ND 2 0 " <br /> Bromomethane ND 10 - <br /> Tert-amyl methyl ether ND 20 " <br /> Ethanol ND 500 " <br /> n-Butylbenzene ND 0 50 <br /> 1,2 Dtchloroethane ND 20 " <br /> sec-Butylbenzene ND 050 " <br /> 1,2-Dibromoethane(EDB) ND 2 0 <br />- ten-Butymenzene IND 0 50 <br /> Carbon tetrachloride ND 0 50 <br />` Chlorobenzene T � ND 050 - <br /> Chloroethane -- -- - -- - - -- - ND-0 50— <br /> Chloroform ND 050 " <br /> Chloromethane -- - - — -- -ND 0 50 - -- - - - <br /> 2-Chlorotoluene ND 0 50 <br /> 4-Chlorotoluene ND 0 50 " <br /> —Dibromochloromethane.-.--- - ND 0 50_ <br /> 1,2-Dibromoethane(EDB) ND 0 50 <br /> Dibromomethane ND 0 50 " <br /> 1,2-Dibromo-3-chloropropane ND 10 <br /> 1,2-Dichlorobenzene ND 0 50 <br /> 1,3-Dichlorobenzene ND 0 50 <br /> 1,4-Dichlorobenzene ND 0 50 <br /> Dichlorodifluoromethane ND 0 50 " <br /> 1,1-Dtchloroethane ND 0 50 <br /> 1,2-Dtchloroethane- ND 0 50 <br /> _ 1,3-Dichloroethene_ _ _ _ _ND_ _ 0 50 <br /> cis-1,2-Dichloroethene ND 0 5o " <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a Wei weight <br /> basis This analytical report must be reproduced in its entirety <br /> 94 of 102 <br />