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  • Criteria Air Pollutants
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Contact Us About Criteria Air Pollutants

 

Information is also available for the following topics:

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For comments or questions on other aspects of the criteria air pollutants and the national ambient air quality standards, please use the form below to send us comments or questions. Be sure to include your e-mail address if you’d like a response. Including specific details in your questions may help us provide a more focused and applicable response. 

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Last updated on April 10, 2023
United States Environmental Protection Agency

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