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_ �v tier <br /> Acculabs Inc. March 26 , 1999 <br /> Sample Log 19776 <br /> QC Report for EPA 8020 & Modified EPA 8015 <br /> Run Log : 2178S <br /> From : Tiger Lines UST <br /> Sample(s) Received : 03/13/99 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br /> Parameter Recovery Recovery RPD <br /> Benzene 89 93 4 <br /> Ethylbenzene 90 96 6 <br /> * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 103 <br /> Ethylbenzene 108 <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 /> Toe Kvoka <br /> Lab Direct <br />