Quality Assurance Statistics

USGS Mercury Research Laboratory quality assurance reports are prepared by the Quality Assurance Officer and submitted to the project chiefs to ensure that QA/QC objectives are met. The reports include:

1. an assessment of precision, accuracy, and completeness for each project,
2. significant quality control problems and the status of corrective action,
3. the results of QA performance audits, and
4. any changes to the QA Manual.

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Sampling Quality for Mercury: Guidance Documents

USGS National Field Manual for the Collection of Water-Quality Data

Quality Assurance Procedures

The USGS Mercury Research Laboratory Quality Assurance Manual describes the quality control and quality assurance (QA/QC) procedures used by the U.S. Geological Survey (USGS) Wisconsin District Mercury Laboratory (WDML). These procedures include sample preparation, collection, and handling, as well as laboratory reagents, instrumentation, analysis, and documentation. Strict adherence to quality control and quality assurance procedures described in this manual is of critical importance to provide high-quality research and data.

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