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y4 <br />' Acculabs Inc. May 12 , 1999 <br /> Sample Log 19999 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 2179Y <br /> From : SL/Manteca 19976 (Prod . # 779956) <br /> Sample(s) Received : 05/11/99 <br />' Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery Recovery RPD <br /> Benzene 107 104 3 <br />' Ethylbenzene 105 104 1 <br /> TPH as Gasoline 115 108 6 <br />' * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> % Recovery <br /> Benzene 104 <br /> Ethylbenzene 105 <br /> Gasoline 107 <br />' Parameter Method Blank <br />' Benzene <0.005 mg/Kg <br /> Toluene <0. 005 mg/Kg <br />' Ethylbenzene <0 . 005 mg/Kg <br /> Total Xylenes <0. 005 mg/Kg <br /> TPH as Gasoline <1 . 0 mg/kg <br /> 1 <br /> V <br /> TomK-Ok <br /> Lab Hire or <br />