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October 3 , 1997 <br /> • Sample Log 17393 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 2164L (Methanol Extracts) <br /> From : Southland/N Pershing Stkn (Prof . # 020700496/6304) <br /> Sample(s) Received 09/25/97 <br /> Laboratory Control <br /> Spike Duplicate <br /> Parameter Recovery Recovery RPD <br /> Benzene 94 96 2 <br /> Ethylbenzene 94 98 4 <br /> TPH as Gasoline 102 105 3 <br /> Parameter Method Blank <br /> TPH as Gasoline < 20 mg/Kg <br /> stawart modolsky <br /> senior Chemist <br /> • <br />