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July 22 , 1998 <br /> Sample Log 18759 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 4175A (Methanol Extracts) <br /> From : SL/Stockton #14117 <br /> Sample(s) Received 07/17/98 <br /> Laboratory Control <br /> Spike Duplicate <br /> Parameter Recovery o Recovery RPD <br /> Benzene 112 ill 1 <br /> Ethylbenzene 114 114 0 <br /> TPH as Gasoline 142 140 1 <br /> Parameter Method Blank <br /> Benzene <0 . 10mg/Kg <br /> Toluene <0. 10mg/Kg <br /> Ethylbenzene <0 . 10mg/Kg <br /> Total Xylenes <0 . 10mg/Kg <br /> TPH as Gasoline < 20mg/Kg <br /> Stewart Podolaky <br /> Senior chemist <br /> 1046 Olive Drive, Suite 2 Davis, CA 95616 (530) 757-0920 ( ax (530) 753-6091 <br />