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1 <br /> Acculabs Inc. November 2 , 1998 <br />' Sample Log 19192 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 2175K <br /> From : SL/20632 Stockton, CA (Prod . # 102483 ) <br /> Sample(s) Received : 10/22/98 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery Recovery RPD <br /> Benzene4 <br /> 9 102 8 <br />' Ethylbenzene 96 105 9 <br /> TPH as Gasoline 114 122 7 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br />' % Recovery <br /> Benzene 109 <br /> Ethylbenzene 107 <br /> Gasoline 130 <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 /> Stow rt Pdolsky <br /> Senlpr Ch mlgt <br /> t <br />