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f <br /> FRIEDMAN &BRUYA,INC. <br /> E; - <br /> "y ENVIRONMENTAL CHEMIS'T'S <br /> Date of Report: .11/18/98 <br /> Date Received: 10/24/98 <br /> Project: C3499.01 <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES <br /> FOR BENZENE, TOLUENE, ETHYLBENZENE,AND XYLENES <br /> USING EPSMETHOD 8260 <br /> Laboratory Code: 81014$-02(Duplicate) <br />'E Relative <br /> Reporting Sample Duplicate Percent Acceptance <br /> Analyte Units Result Result Difference Criteria <br /> Benzene pg/g (ppm) <0.04 <0.04 nm 0-20 <br /> Toluene µg/g(ppm) <0.04 <0.04 nm 0-20 <br /> Laboratory Code: Laboratory Control Sample <br /> Relative <br /> Reporting Spike %Recovery %Recovery Acceptance Percent <br /> Ana�Units Level LCS LCSD Criteria Difference_Level LCS LCSD Criteria Difference <br /> Benzene J g/g (ppm) 50 `=92 96 68-110 4 <br /> Toluene µg/g (ppm) 50 `94 92 68-112 2 <br /> nm -The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of <br /> the RPD is not applicable. <br /> t <br /> I <br /> E . <br />