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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 EPA.gov. 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.

New Source Review (NSR) Permitting

New Source Review (NSR) requires stationary sources of air pollution to get permits before construction starts.

New Source Review (NSR) Permitting

EPA's New Source Review (NSR) permitting program protects air quality when factories, industrial boilers and power plants are newly built or modified. NSR permitting also assures that:
  • new or modified industries are as clean as possible, and
  • advances in pollution control occur concurrently with industrial expansion.


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