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r <br /> 4 <br /> rAcculabs Inc. September 13, 1999 <br /> Sample Log 20526 <br /> QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 2183W <br /> From : ATC Assoc. <br /> ' Sample(s) Received : 09/08/99 <br /> Matrix Spike <br /> ' Matrix Spike Duplicate <br /> Parameter $ Recovery $ Recovery RPD <br /> Benzene 106 108 2 <br /> Ethylbenzene 111 112 1 <br /> TPH as Gasoline 109 111 2 <br /> * RPD = Relative Percent Difference <br /> ' Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 111 <br /> Ethylbenzene 117 <br /> ' Gasoline 117 <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 /> Tom <br /> Lab Di c <br /> Lula Da •tor <br /> �i <br />