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QUALITY CON'T'ROL DATA PERTAINING TO SAMPLE LOG 3067 <br /> Accuracy and Precision, Soil: <br /> _ dialysis $ Spike Recoveries* RM** <br /> Benzene 102,104 2$ <br /> Toluene 102,112 10% <br /> Ethyl Benzene 108,124 14% <br /> Xylenes 113,120 6% <br /> TPH as Gasoline 120,113 6% <br /> TPH as Diesel 98,96 2% <br /> Blank, Soil: <br /> Analysis Measured value <br /> Benzene <.005 mg/kg <br /> E Toluene <.005 mg/kg r <br /> Ethylbenzene <.005 :ng/kg i <br /> Xylenes <.005 mg/kg <br /> TPH as Gasoline <.5 ing/kg <br /> TPH as Diesel <10 mg/kg <br /> * 100 is the optimum value for a spike recovery. <br /> RPD is "Relative Percent Difference", which is defined as <br /> the difference of two values divided by, their mean, expressed <br /> as a percentage. <br /> c <br /> I <br /> f <br /> • , t <br /> 1f� <br /> �s <br /> Western Envkonmontef <br /> science a 7'echnaogy <br /> 1646 Olive <br /> Davis.CA 956th <br /> 916 753.9506 <br />