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819 Straker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> �& (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www sequoralabs com <br /> SECOR International-Rancho Cordova Project ARCO 4493,Stockton,CA <br /> 3017 Kilgore Road„Suite 100 Project Dumber 4493,Stockton,CA Reported <br /> Rancho Cordova CA,95670 P-ject Manager Rusty Benkosky 04/10/02 16 29 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Sacramento <br /> Reportmg <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> BM-5(SZQ2167AS)Witter Ied,03112M 13.45 Received,03115102 12.45 <br /> 1,4-Dichlorobenzene ND 050 ug/I 1 2030252 03/20/02 03/20/02 EPA 8260E <br /> Dichlorodifluoromethane ND 050 ^ " <br /> 1,1-Dichloroethane ND 050 ^ <br /> 1,2-Dtchloroethane 077 050 " ^ <br /> 1,1-Dichloroethene 15 050 <br /> cis-1,2-Dichloroethene 29 050 <br /> trans-l,2-Dichloroethene ND 050 <br /> 1,2-Dichloroproparte ND 050 ^ " <br /> 1,3-Dichloropropane ND 050 <br /> 2,2-Dichloropropane ND 050 " <br /> 1,1-Dtchloropropene ND 050 " <br /> Ethylbenzene 40 0 50 <br /> Hexachlorobutadiene 'ND 1 0 ^ <br /> isopropylbenzene 8 1 0 50 " <br /> Isopropyttoluene ND 050 " <br /> ethylene chloride ND 10 " <br /> Naphthalene 2 0 1 0 " <br /> n-Propylbenzene 13 050 <br /> Styrene ND 050 <br /> 1,1,I,2-Tetrachloroethane ND 0 50 ^ " <br /> 1,1,2,2-Tetrachloroethane ND 10 <br /> Tetrachloroethene 1 1 050 " <br /> Toluene 051 050 <br /> 1,2,3-Tnehlombenzene ND 0 50 <br /> 1,2,4-Tnchlorobenzene ND 0 50 ^ <br /> 1,1,1-Trichloroethane ND 0 50 ^ <br /> 1,1,2-Trichloroethane ND 050 " <br /> Trichloroethene 31 0 50 <br /> Tnchlorotluoromethane ND 050 11 ^ <br /> 1,2,3-Tnchloropropane ND 10 <br /> 1,2,4-Tnmethylbenzene 12 050 ^ " <br /> 1,3,5-Tnmethylbenzene 093 0 50 ^ <br /> Vmyl chlonde 72 0 50 ^ <br /> Total Xylenes 2 4 0 50 <br /> Surrogate Dibromofluoromethane 836% 70-130 " <br /> Surrogate 1,2 DCA.d4 752% 70-130 " <br /> Surrogate Toluene-d8 836% 70-130 FF " <br /> Surrogate 4-BFB 856% 70-130 11 " <br /> equoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must be reproduced in its entirety <br /> Page Page 13 of 27 <br />