# 2025-12526: Ohio's Regional Haze Plan Clears EPA Hurdle for Cleaner Skies

2025-12526, Air Plan Approval; Ohio; Regional Haze Plan for the Second Implementation Period, is a Federal Register rule from Environmental Protection Agency published 2025-07-08 (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2025-12526
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-12526
- Title: Air Plan Approval; Ohio; Regional Haze Plan for the Second Implementation Period
- Type: Rule
- Agencies: Environmental Protection Agency
- Citation: 90 FR 29993
- Published: 2025-07-08
- Effective: unknown
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: none
- Last updated: 2026-06-11

## In one line

Ohio's Regional Haze Plan Clears EPA Hurdle for Cleaner Skies

## Summary

The EPA just gave a thumbs-up to Ohio’s updated plan to clear up regional haze and keep the air fresh in special protected areas. This plan, updated between 2021 and 2025, helps Ohio meet clean air goals and shows how they’ll keep making progress over the next few years. People and businesses in Ohio can expect cleaner skies without new costly changes right now.

## Abstract

The Environmental Protection Agency (EPA) is approving the Regional Haze State Implementation Plan (SIP) revision submitted by the Ohio Environmental Protection Agency (Ohio or Ohio EPA) on July 30, 2021, as supplemented on August 6, 2024, and clarified by Ohio on June 16, 2025, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule for the program's second implementation period. Together, Ohio's 2021 SIP submission, 2024 SIP supplement, and 2025 clarification address the requirement that States must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. Ohio's complete SIP submission also addresses other applicable requirements for the second implementation period of the Regional Haze Program. EPA is taking this action pursuant to sections 110 and 169A of the CAA.

## Effects PRIA read

- EPA Approves Ohio Haze Plan: benefit, low. The EPA approved Ohio’s Regional Haze State Implementation Plan (SIP) revision submitted July 30, 2021, supplemented August 6, 2024, and clarified June 16, 2025, as meeting requirements under the Clean Air Act and the Regional Haze Rule for the program’s second implementation period. This means Ohi…
- No New Costly Changes Now: benefit, low. The notice indicates that people and businesses in Ohio can expect cleaner skies without new costly changes at this time. EPA’s action approves the State’s submitted plan for the second implementation period, rather than imposing new immediate regulatory costs.

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## Sources
- [2025-12526 on federalregister.gov](https://www.federalregister.gov/documents/2025/07/08/2025-12526/air-plan-approval-ohio-regional-haze-plan-for-the-second-implementation-period)
- [2025-12526 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-07-08/pdf/2025-12526.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2025-12526 (as of 2026-06-11).