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October 3 , 1997 <br /> Sample Log 17393 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4166A <br /> From : Southland/N Pershing Stkn (Pro3 . # 020700496/6304 ) <br /> Sample(s) Received : 09/25/97 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter o Recovery Recovery RPD <br /> Benzene 104 104 0 <br /> Ethylbenzene 106 105 1 <br /> TPH as Gasoline 133 137 3 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 102 <br /> . Ethylbenzene 103 <br /> Gasoline 110 <br /> Parameter Method Blank <br /> TPH as Gasoline <50 ug/L <br /> stews odolsky <br /> senior Vheaist <br /> • <br />