Regulation & law · 09/09/2026Updated: 10/16/2026 · 1 min read

EPA Approves Indiana's Air Plan for 2015 Ozone NAAQS

Summary

The U.S. Environmental Protection Agency has approved a portion of Indiana's State Implementation Plan, ensuring the state's air quality management program meets federal requirements for the 2015 ozone National Ambient Air Quality Standard.

Original source language: Federal Register — All DocumentsOpen original release →

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