Laserfiche WebLink
analyzed on the same instrument immediately prior to the trip blank, was 2,1 4g/L (when analyzed <br /> by U.S. EPA Method 8260). Since the concentration of naphthalene in C007 is less than the <br /> concentration in the trip blank it is unlikely that carry-over contamination was the source of the <br /> compounds in the trip blank. In addition, none of the other compounds detected in the trip blank <br /> was detected in sample COOT <br /> ® The concentrations of compounds detected in the trip blank indicate potential <br /> cross-contamination during sample transport or possible contamination by laboratory <br /> instrumentation. Therefore, the sample results that are less than five times the reported results for <br /> the trip blank are qualified as non-detect with the sample result as the detection limit. Table 4-1 <br /> summarizes the qualified sample results. <br /> f <br /> e5.2 Spikes <br /> All reported results for surrogate spikes, laboratory control samples, and matrix <br /> spikes are within laboratory control limits indicating that accuracy is within acceptable limits. <br /> 5.3 Duplicates <br /> All reported relative percent differences (RPDs) for field duplicates, laboratory <br /> s control duplicates, and matrix spike duplicates are within laboratory control limits indicating that <br /> precision is within acceptable limits. <br /> 5.4 Comparability <br /> Samples were analyzed by both U.S. EPA Methods 8010/8020 and 8260A. U.S. <br /> EPA Method 8010/8020 was used to provide the lowest possible detection limit for target <br /> compounds. U.S. EPA Method 8260A was used to provide a confirmation of 8010/8020 results <br /> and to test for a longer list of VOCs. For U.S. EPA Method 8010/8020, identification and <br /> quantitation of compounds are based on retention time and response factor. For U.S. EPA <br /> 35275 Welty Road,Vernalis 14 March 1997 <br />