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Ids <br /> 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 % Recovery % Recovery RPD <br /> 1 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 /> ' Stewart Podolsky 'Y) <br /> senioz Chemist <br /> 1046 Otic hrixc �LIIIL 2 D ivv,, ( A O)�,016 <br />