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r <br /> ACCULASS, INC <br /> February 13 , 2002 <br /> Sample Log 23431 <br /> i <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 2214I <br /> From : STHL/Manteca #19976 (Pro] . # 779956.63040000) <br /> Sample(s) Received : 02/04/02 <br /> i Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery Recovery RPD <br /> 1 <br /> Benzene 62 59 5 <br /> Ethylbenzene 86 84 2 <br /> TPH as Gasoline 130 105 21 <br /> * RPD = Relative Percent Difference <br /> i <br /> Parameter Laboratory Control Sample <br /> i % Recovery <br /> Benzene 60 <br /> Ethylbenzene 78 <br /> Gasoline 79 <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 /> i <br /> Tom KV <br /> Lab DS r <br /> t� <br /> 11 <br /> 1 <br />