October 2017 Memo and Supplemental Information on Interstate Transport SIPs for the 2008 Ozone NAAQS
On October 27, 2017, EPA issued a memo to provide supplemental information to states and the Environmental Protection Agency (EPA) Regional offices. This information supports the development or review of State Implementation Plans (SIPs) which address section 110(a)(2)(D)(i)(I) of the Clean Air Act (CAA), also called the “good neighbor” provision, as it pertains to the 2008 ozone National Ambient Air Quality Standards (NAAQS).
File and Documents
- Memo: Supplemental Information on the Interstate Transport State Implementation Plan Submissions for the 2008 Ozone National Ambient Air Quality Standards under Clean Air Act Section 110(a)(2)(D)(i)(I)
- Data File with Projected Ozone Design Values Based on EPA’s Updated 2023 Transport Modeling(1 pg, 85 K)
- Additional Updates to Emissions Inventories for the Version 6.3, 2011 Emissions Modeling Platform for the Year 2023.