On March 2, 2026, EPN submitted comments to EPA about its proposed approval of certain state plans under the 2015 ozone standard. EPN raised concerns that the action would weaken interstate air pollution protections, relies on outdated modeling, increases health risks in downwind states, and lacks a clear, comprehensive transport strategy.
EPN Comments on Proposed Air Quality State Implementation Plans; Approvals and Promulgations: Interstate Transport Plan Review for the 2015 Ozone NAAQS
