An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Air Emission Measurement Center (EMC)

What is the EMC?

For over three decades, the Emission Measurement Center (EMC) of the Environmental Protection Agency (EPA), Office of Air Quality Planning and Standards (OAQPS), has provided national leadership in furthering the science of characterizing and measuring air pollutant emissions. Acting as a bridge between the research scientists in EPA's Office for Research and Development (ORD) and those in OAQPS developing national performance and emissions standards, the Center has produced nearly one hundred methods of measuring air pollutants emitted from the entire spectrum of industrial processes causing air pollution.

The EMC is also a bridge between the regulators and the regulated community in providing technical expertise and guidance necessary to implement the rules especially in applying emission testing methods for pollution control evaluations, compliance determinations, and performance testing. The EMC is the EPA's focal point for planning and conducting field test programs to provide quality data in support of regulatory development, producing validated emission test methods, and providing expert technical assistance for EPA, State, and local enforcement officials and industrial representatives involved in emission testing.

The EMC is also known as the Measurement Technology Group, and is part of the Air Quality Assessment Division in the Office of Air Quality Planning and Standards.

The Emission Measurement Center Directory lists the EMC staff and their areas of responsibility.