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December 24, 1997 <br /> Sample Log 17746 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4168P <br /> From : Southland (Prof . # 020700496.6304) <br /> Sample(s) Received : 12/19/97 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter °s Recovery Recovery RPD <br /> Benzene 92 102 10 <br /> Ethylbenzene 106 118 11 <br /> No gasoline spike recovery due to high gas in spiked sample. <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 85 <br /> Ethylbenzene 90 <br /> Gasoline 98 <br /> Parameter Method Blank <br /> TPH as Gasoline <50 ug/L <br /> atewar�Podolsky - <br /> senior Chemist <br /> 1046 Olive Dnve, Suite 2 Davis, CA 95616 (530) 757-0920 Fax (530)753-6091 <br />