# 2025-12533: EPA Approves Louisiana's Sulfur Dioxide Air Plan

2025-12533, Air Plan Approval; Louisiana; Interstate Transport Requirements for the 2010 SO2 NAAQS, is a Federal Register rule from Environmental Protection Agency published 2025-07-07 (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2025-12533
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-12533
- Title: Air Plan Approval; Louisiana; Interstate Transport Requirements for the 2010 SO2 NAAQS
- Type: Rule
- Agencies: Environmental Protection Agency
- Citation: 90 FR 29743
- Published: 2025-07-07
- Effective: unknown
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: none
- Last updated: 2026-06-11

## In one line

EPA Approves Louisiana's Sulfur Dioxide Air Plan

## Summary

The EPA just gave Louisiana a thumbs-up for its plan to stop sulfur dioxide pollution from drifting into other states and messing up their air quality. This means Louisiana’s efforts meet the 'good neighbor' rules for the 2010 SO2 air standards. No new costs or deadlines for folks, just cleaner air and smoother interstate teamwork!

## Abstract

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving the portion of the State Implementation Plan (SIP) submittal from the State of Louisiana demonstrating that the State satisfies the interstate transport requirements of section 110(a)(2)(D)(i)(I), also known as the "good neighbor" provision of the CAA, for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) primary National Ambient Air Quality Standard (NAAQS). The good neighbor provision requires each State's implementation plan to include adequate provisions prohibiting the interstate transport of air pollution in amounts that will contribute significantly to nonattainment, or interfere with maintenance, of a NAAQS in any other State.

## Effects PRIA read

No economic effects identified for this document.

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## Sources
- [2025-12533 on federalregister.gov](https://www.federalregister.gov/documents/2025/07/07/2025-12533/air-plan-approval-louisiana-interstate-transport-requirements-for-the-2010-so2-naaqs)
- [2025-12533 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-07-07/pdf/2025-12533.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2025-12533 (as of 2026-06-11).