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4 <br /> May 17, 1995 <br /> Sample Log 11937 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> From : <br /> Sample(s) Received : 05/08/95 <br /> Matrix Spike <br /> Matrix .Spike Duplicate <br /> Parameter Recovery % Recovery RPD <br /> Benzene 1.08 113 5 <br /> Ethylbenzene 104 109 5 <br /> TPH as Gasoline 103 105 2 <br /> * RPD = Relative Percent Difference <br /> Parameter Method Blank <br /> Benzene <0. 30 ug/L <br />• Toluene <0. 30 ug/L <br /> Ethylbenzene <0. 30 ug/L <br /> Total Xylenes <0 . 50 ug/L <br /> TPH as Gasoline <50 ug/L <br />. 1 Rirr <br /> a for C'baaist <br />