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r <br /> E.: <br /> 1. QUALITY CONTROL DATA PERTAINING TO SAMPLE LOG 3622 <br /> Old <br /> 11 Accuracy and Precision! Water: <br /> P2 Lnalysi ss Spike Recoveries_* RPD** <br /> Benzene 108,106 2% <br /> �.5 Toluene 108,98 10% <br /> Ethyl Benzene 106,96 10% <br /> 9 Xylenes 113,100 12% <br /> TPH as Gasoline 97,93 4% <br /> TPH as Diesel 91,95 4$ <br /> ® Blank, Wnter: <br /> ff a s's Measured Value <br /> EYE Benzene <.5 ug/l <br /> Toluene <.5 ug/l <br /> Ed's1 Ethylbenzene <.5 ug/l <br /> ItA <br /> Xylenes <.5 ug/l <br /> TPH as. Gasoline .<50 ug/1 <br /> TPH as Diesel <50 ug/l <br /> * 100 is the optimum value for a spike recovery. <br /> ** RPD is "Relative Percent Difference", which is defined as <br /> the difference of too values divided by their mean, expressed <br /> as a percentage. <br /> t. <br /> E. <br /> j WeStoln fnvinxYnOntal <br /> Science A rechnotogy <br /> 10+6 Of"Drive.Suite 3 <br /> � 'DDavis,GA 056 t6 <br /> {Ya 016 753.9500 <br />