What Quality Control is included in my Report?

There are several levels of Quality Control (QC) packages available. A standard or Level II QC package includes results QC samples associated with your specific samples: Method Blank, a laboratory Control Sample (LCS), a laboratory control sample duplicate (LCSD) and, if applicable to your samples, the results for a matrix spike (MS) and matrix spike duplicate (MSD). An extended or Level III package would include all of the above as well as any QC that is associated with the instrumentation used during the analysis of your samples including calibration data and on-going instrument verification data. With both QC levels, any volatile or semi-volatile analysis performed also includes surrogate data for each sample analyzed.