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819 Striker Ave Ste 8 <br /> 4 —D <br /> Sequoia Sacra...' CA958"i4 , <br /> (916)921 9500 <br /> Analytical FAX(916)921-01OD <br /> www sequoislabs com <br /> Gettler-Ryan-Dublin Project Unocal 5098,Stockton, CA S2I0010 i <br /> 6747 Sierra Court, Ste J Project Number N/A Reported <br /> Dublin CA, 94568 Project Manager Deanna L Harding 10/14/02 18 46 <br /> 4 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2100111 - EPA 5030B JP/T] <br /> Blank(2100111-SLK]) Y Prepared&Analyzed 10/08/02 <br /> 1,2-Dichlorobenzene ND 050 ug/l <br /> 1,3-Dichlorobenzene ND 050 " <br /> 1,4-Dichlorobenzene ND 050 " <br /> Dichlorodifluoromethane ND 050 <br /> 1,1-Dichloroethane ND 050 <br /> 1,27Dichloroethane ND 050 <br /> 1,1-Dtchloroethene ND 050 " <br /> cis-1,2-Dtchloroethene ND 050 <br /> trans-l,2-Dichloroethene ND 050 " <br /> 1,2-Dichloropropane ND 050 " <br /> 1,3-Dichloropropane ND 050 <br /> 2,2-Dichloropropane ND 050 " <br /> 1,1-Dich1oropropene ND 050 " <br /> Ethylbenzene ND 050 <br /> Hexachlorobutadiene ND 10 1 <br /> Isopropylbenzene ND 050 " <br /> p-lcnprnpyltnhernr Nrl n cri <br /> Methylene chloride ND 1 0 _ <br /> Methyl tert-butyl ether ND 050 -- <br /> Naphthalene ND _—10 <br /> - -- - - — - - - -_ - -- - - <br /> n-Propylbenzene— -- - - - --- —ND- 050 " <br /> Styrene -- - --- - - -ND -050 -- -- - -- <br /> 1,1,1,2-Tetrachloroethane ND 050 <br /> 1,1,2,2-Tetrachloroethane ND 10 <br /> --,_Tetrachioroethene - — _ y_ ND - - - -0 <br /> Toluene ND 050 " <br /> 1,2,3-Tnchlorobenzene ND 050 - <br /> 1,2,4-Tnchlorobenzene ND 050 " <br /> 1,1,1-Trichloroethane ND 050 IT <br /> 1,1,2-Trichloroethane ND 050 <br /> Trichloroethene ND 050 " <br /> Tnchlorofluoromethane ND 050 " <br /> 1,2,3-Tnchloropropane ND 10 " <br /> 1,2,4-Tnmethylbenzene ND 050 " <br /> 1,3,5-Tnmethylbenzene- — - - -- -- --ND-- - - 050- <br /> Vinyl <br /> 50-Vinyl chloride ND 050 <br /> Y <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in actor dance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical repot t must be reproduced in its entirety <br /> Page 113 of 119 � <br /> 5 <br />