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a <br /> ACCULASS, INC. <br /> February 8, 2002 <br /> Sample Log 23418 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 4203W <br /> From : Colberg Boat Works (Prof . # 5143) <br /> Sample(s) Received : 01/29/02 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter o Recovery o Recovery RPD <br /> Benzene 64 62 4 <br /> Ethylbenzene 89 81 10 <br /> TPH as Gasoline 148 137 8 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 67 <br /> Ethylbenzene 81 <br /> Gasoline 11.0 <br /> Parameter Method Blank <br /> Benzene <0 .50 ug/L <br /> Toluene <0.50 ug/L <br /> Ethylbenzene <0.50 ug/L <br /> Total Xylenes <0.50 ug/L <br /> TPH as Gasoline <50 ug/L <br /> Tom Kwoka <br /> Lab bireCto <br /> i <br />