Method QA/QC requirements should be followed, depending on the monitoring objectives, and if time allows. The following is the minimum recommended QC that should be performed for rapid and confirmatory methods (confirmatory methods may require additional QC depending on use of the data and the requirements of the method) to verify that the method is performing acceptably:
Chemical
For Chemical analytes:
- Method blank
- Analytical duplicates/replicates
- Calibration verification
- Laboratory Control Sample (LCS) or Laboratory Fortified Blank (LFB)
Radiochemical
For Radiochemical analytes:
- Calibration check
- Background check
- Duplicate
- Blank
Biological
For Biological analytes:
- Positive control
- Negative control
- Blank
Member laboratories should be prepared with calibrated instruments, appropriate standards, method-specific standard analytical procedures, and qualified and trained technicians. The ASR should work with the support laboratories to determine if they have sufficient capabilities to provide the required analytical support. MSLs should provide all QC data to the PRL, in addition to a narrative description of observations, tentative identifications, and QC deviations.