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• i <br /> April 25 , 1996 <br /> Sample Log 14469 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4146B <br /> From : Crystal, Stockton (Prof . # 1628.04) <br /> Sample(s) Received : 04/10/96 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter o Recovery Recovery RPD <br /> Benzene 108 107 0 <br /> Ethylbenzene 121 111 0 <br /> TPH as Gasoline 105 105 1 <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 /> S or Chemist <br /> • <br />