Operations and Procedures:
Sample Analysis
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### Level of QA/QC, continued

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
- Radiochemical
- Biological

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.

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