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819 Strdter Avenue Suite 8 <br /> IDSequoia Sacramento, 95834 <br /> (915))9 921 9500 <br /> 1WAnalytical FAX(915)921.0100 <br /> www sequolalabs com <br /> SECOR International-Rancho Cordova Protect ARCO 4493,Stockton, CA <br /> 3017 Kilgore Road,Suite 100 Pmlect Number 4493,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Pmlw Manager Rusty Benkosky 01/16/02 13 32 <br /> Volatile Organic Compounds by EPA Method 8260B -Quality Control <br /> Sequoia Analytical -Sacramento <br /> Reporting Spike Source %REC RAD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 201.0131-EPA 5030B[PITj w <br /> Blank 2010131-BLKI) Prepared&Analyzed 01/11/02 <br /> trans-12-Dichloroethene ND 10 ugll ^� - <br /> 1,2-Dtchloropropane ND 10 " <br /> 1,3-Dtchloropropane ND 10 " <br /> 2,2-Dtchloropropane ND 10 " <br /> 1 i-Dichloropropene ND 1 0 " <br /> Ethylbenzene ND 1 0 " <br /> Hexachlorobutadiene ND 10 " <br /> Isopropylbenzene ND 1 0 " <br /> p-Isopropyltoluene ND 1 0 " <br /> Methylene chloride ND 2 5 " <br /> Methyl tert-butyl ether _ _ _ ND _ _ 1 0 <br /> Naphthalene ND 2 5 " <br /> n-Propylbenzene ND l 0 <br /> Styrene ND 10 " <br /> 1,1,1,2-Tetrachloroethane ND 10 " <br /> 1,1,2,2-Tetrachloroethane ND 10 " <br /> Tetrachloroethene ND 10 " <br /> Toluene ND 10 " <br /> 1,2,3-Tnchlorobenzene ND 10 " <br /> 1,2,4-Tnchlorobenzene ND 10 " <br /> 1,1,1-Tnchloroethane ND 10 " <br /> 1,1,2-Tnchloroethane ND 10 " <br /> Tnehloroethene ND 10 " <br /> Tnehlorolluoromethane ND 2 5 " <br /> 1,2,3-Tnchloropropane ND 10 " <br /> 1,2,4-Tnmethylbenzene ND 10 " <br /> 1,3,5-Tnmethylbenzene ND 10 " <br /> Vinyl chloride ND l 0 " <br /> Total Xylenes ND 1 0 " <br /> Surrogate 1 2-DCA-d4 238 25 0 95 1 60-140 <br /> Surrogate Dibromofluoromethane 223 1, 25 0 89 1 70-130 <br /> Surrogate 1 2-DCA-d4 23 8 250 95 2 70-130 <br /> Surrogate Toluene-d8 269 15 0 108 70-130 <br /> Surrogate 4-BFB 230 250 92 0 70-130 <br /> Sequoia Analytical-Sacramento The results in thts report apply to the samples analyzed to accordance with the chat <br /> of custody document This analytical report must be reproduced in its entire* <br /> Page Page 21 of 23 <br />