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fir_ <br /> ACCUL.ASS, INC <br /> February 8 , 2002 <br /> Sample Log 23418 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 4203Z <br /> From : Colberg Boat Works (Prof . # 5143) <br /> Sample(s) Received : 01/29/02 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter % Recovery o Recovery RPD <br /> Benzene 62 66 6 <br /> Ethylbenzene 83 79 5 - <br /> TPH as Gasoline 92 90 2 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 62 <br /> Ethylbenzene 75 i <br /> Gasoline 120 <br /> Parameter Method Blank <br /> Benzene <0 .50 ug/L _ <br /> Toluene <0 .50 ug/L <br /> L <br /> Ethylbenzene <0 .50 u g/ � <br /> Total Xylenes <0 .50 ug/L <br /> TPH as Gasoline - <50 -ug/L <br /> Tom KWbkn <br /> - - - - - L" Div <br />