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v <br /> February 24 , 1997 <br /> Sample Log 16440 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4159D <br /> From : Southland/Pershing Stockton (Prof . #020700472/6704) <br /> Sample(s) Received 02/20/97 <br /> Matrix Spike <br /> Matrix .Spike Duplicate <br /> Parameter Recovery Recovery RPD <br /> Spiked sample too contaminated .for spike recovery. See LCS data. <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> o Recovery <br /> Benzene b 100 <br /> Ethylbenzene 97 <br /> Gasoline 104 <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 /> Jowl Klff <br /> Senior Che.ist <br />