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ACCULASS, INC <br /> April 3 , 2002 <br /> Sample Log 23609 <br /> i <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> 1 Run Log : 4205K <br /> From : Former Earthgrains (Prof . # C23484517-A00) <br /> Sample(s) Received : 03/29/02 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter 4 Recovery o Recovery RPD <br /> Benzene 91 93 2 <br /> Ethylbenzene 104 100 4 <br /> TPH as Gasoline 108 104 4 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> ' % Recovery <br /> Benzene 92 <br /> Ethylbenzene 96 <br /> Gasoline 96 <br /> iParameter 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 EKwoka <br /> Lab Dir o <br />