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ACCULABS, INC <br /> December 11 , 2001 <br /> Sample Log 23238 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 2211W <br /> From : STHL\Manteca #19976 (Prod . # 779956 . 63040000) <br /> Sample(s) Received : 12/03/01 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery % Recovery RPD <br /> Benzene 84 83 0 <br /> Ethylbenzene 86 91 5 <br /> TPH as Gasoline 99 101 2 <br /> * RPD = Relative Percent Difference <br /> i <br /> Parameter Laboratory Control Sample <br /> % Recovery <br /> Benzene 90 <br /> Ethylbenzene 95 <br /> Gasoline 128 <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 /> TomKw51ka <br /> Lab Director <br />