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ACCULAUS, INC <br /> January 31 , 2002 <br /> Sample Log 23409 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 2213R,U <br /> From : Earthgrains Stockton (Prod. # 23-484517-B0O) <br /> Sample(s) Received : 01/25/02 <br />' Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter o Recovery Recovery RPD <br /> 1 <br /> Benzene 78 73 7 <br />' Ethylbenzene 97 94 2 <br /> TPH as Gasoline 147 146 0 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br />' Recovery <br /> Benzene 93 <br /> Ethylbenzene 108 <br /> Gasoline 110 <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 <br /> Lab Dl"W <br /> r <br /> i <br /> 1 <br /> 1 <br />