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Nitrogen Dioxide (NO2) Pollution

Fact Sheets: Ambient Nitrogen Dioxide Monitoring Requirements

EPA removed the requirement to install near-road nitrogen dioxide (NO2) monitoring stations in Core Based Statistical Areas (CBSAs) having populations between 500,000 and 1 million.  Under the original monitoring requirements, these monitors were due to be installed and operational by January 1, 2017. 

This page includes fact sheets related to the proposed and final action.

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