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November 19, 1997 <br /> Sample Log 17602 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4167N <br /> From : Southland (Proj . # 020700456..6504) <br /> Sample(s) Received : 11/13/97 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery Recovery RPD <br /> I <br /> Benzene 107 108 1 } <br /> Ethylbenzene 106 106 0 <br /> TPH as Gasoline 102 102 0 <br /> IIf I <br />! * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 109 <br /> Ethylbenzene 109 <br /> Gasoline 103 <br /> Parameter Method Blank <br /> r TPH as Gasoline `50 ug/L <br /> t. <br />�f <br /> • 8terrart Ptxlo sky <br /> senior Chemist <br /> li <br /> n <br /> f � 7 <br /> L . <br /> } <br />