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July 22 , 1998 <br /> Sample Log 18759 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4175D <br /> From : SL/Stockton #14117 <br /> Sample(s) Received : 07/17/98 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter o 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 /> Recovery <br /> Benzene 101 <br /> Ethylbenzene 103 <br /> Gasoline 114 <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 /> , r <br /> Stewart Podol-sky <br /> senior Chesist <br /> 1046 Olive Drive, Suite 2 - Dave, CA 95616 • (530) 757-0920 Fax (530) 751-6091 <br />