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Acculabs Inc. September 16, 1998 <br /> Sample Log 19020 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 2174K <br /> From : SL Stockton #17334 <br /> Sample(s) Received : 09/14/98 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery Recovery RPD <br /> Benzene 97 96 1 <br /> Ethylbenzene 91 92 1 <br /> TPH as Gasoline 99 98 1 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> % Recovery <br /> Benzene 109 <br /> Ethylbenzene 108 <br /> Gasoline 109 <br /> Parameter Method Blank <br /> Benzene <0.005 mg/Kg <br /> Toluene <0 .005 mg/Kg <br /> Ethylbenzene <0. 005 mg/Kg <br /> Total Xylenes <0. 005 mg/Kg <br /> TPH as Gasoline <1 . 0 mg/kg <br /> ste rt Podolsky <br /> sehior Chemist <br />