Skip to the page

Data / Federal rules / 2024-25243

Air Plan Approval; Mississippi; PSD and Air Quality Modeling Infrastructure Requirements for the 2015 8-Hour Ozone National Ambient Air Quality Standards

The Environmental Protection Agency published this final rule in the Federal Register on October 31, 2024. It took effect on December 2, 2024.

SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.

What the agency says

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) submission provided by the State of Mississippi, through the Mississippi Department of Environmental Quality (MDEQ), via a letter dated February 28, 2024. Specifically, EPA is finalizing approval of updates to the incorporation by reference of Federal prevention of significant deterioration (PSD) rules in the Mississippi SIP. EPA is also converting the previous conditional approval of Mississippi's infrastructure SIP PSD and air quality modeling provisions for the 2015 Ozone National Ambient Air Quality Standards (NAAQS) to a full approval. EPA is also approving changes to public notice provisions for PSD permitting to provide for electronic notice (e-notice) and to remove the mandatory requirement to provide public notice in a newspaper, and other minor changes to the PSD rules. EPA is finalizing approval of these changes pursuant to the Clean Air Act (CAA or Act).

Key facts

Document number
2024-25243
Type
Final rule
Action
Final rule
Agency
Environmental Protection Agency
Published
October 31, 2024
Takes effect
December 2, 2024
Dates
This rule is effective December 2, 2024.
Docket
EPA-R04-OAR-2024-0186; FRL-12250-02-R4
Code of Federal Regulations
40 CFR 52
Topics
Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides
Pages
5

The document on federalregister.gov PDF

Other documents from the Environmental Protection Agency

Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on environmental protection · Rules on incorporation by reference · Published in October 2024

Read from the Federal Register API, last updated 2026-10-24. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.