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Acculabs Inc. June 8, 1999 <br /> Sample Log 20093 <br /> 1 QC Report for EPA 602 & Modified EPA 8015 <br /> Run Log : 4185E <br /> From : Earth Grains - Stockton (Proj . # 121382) <br />' Sample(s) Received 06/01/99 <br /> Matrix Spike <br /> Matrix Spike Duplicate <br />' Parameter Recovery % Recovery RPD <br /> Benzene 94 94 0 <br /> Ethylbenzene 101 103 2 <br /> TPH as Gasoline 108 125 15 <br />' * RPD = Relative Percent Difference <br /> Parameter Laboratory Control Sample <br /> Recovery <br /> Benzene 97 <br /> Ethylbenzene 102 <br /> Gasoline 120 <br /> Parameter Method Blank <br />' Benzene <0. 50 u <br /> g/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 /> 1 <br /> Tom ! o <br /> Lob Dir- or <br /> 1 <br />