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April 5, 1995 . <br /> Sample Log 11665 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> From Crystal Creamery (Prod . # 1628 . 04) <br /> Sample(s) Received : 03/31/95 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter % Recovery % Recovery RPD <br /> Benzene I`I4 106 7 <br /> Ethylbenzene 109 104 5 <br /> TPH as Gasoline 91 84 8 <br /> * RPD = Relative Percent Difference <br /> Parameter Method Blank <br /> Benzene <0. 30 ug/L <br /> Toluene <0. 30 ug/L <br /> Ethylbenzene <0. 30 ug/L <br /> Total Xylenes <0. 50 ug/L <br /> TPH as Gasoline <50 ug/L <br /> l <br /> Joe (iff . <br /> Sen Chemist <br />