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Ground-level Ozone Pollution

Information on the Interstate Transport "Good Neighbor" Provision for the 2008 Ozone National Ambient Air Quality Standards (NAAQS) under Clean Air Act (CAA) Section 110(a)(2)(D)(i)(I)

This January 2015 memorandum is to provide information to states regarding State Implementation Plans (SIPs) to address the interstate transport “Good Neighbor” Provision of the CAA as it pertains to the 2008 ozone National Ambient Air Quality Standards (NAAQS).

For more information on the NAAQS, visit the 2008 Ozone NAAQS page.

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