Air – MDEQ

Mississippi Department of Environmental Quality

Air

The Air Division is responsible for ensuring that air quality within Mississippi is protective of public health and welfare. The division is charged with controlling, preventing, and abating air pollution to achieve compliance with air emission regulations pursuant to the Mississippi Air and Water Pollution Control Act, applicable regulations promulgated by the U.S. Environmental Protection Agency (EPA), and the federal Clean Air Act.

To sign up to receive notifications on Air Division notices or air-related updates, please visit our Air Notice Distribution Webpage.

For information regarding air permits and related application forms, visit the Environmental Permits Division.

For information regarding air compliance and enforcement, visit the Environmental Compliance and Enforcement Division.

State Rulemakings

Proposed Amendments to 11 Miss. Admin. Code Part 2, Chapter 2 - "Permit Regulations for the Construction and/or Operation of Air Emissions Equipment"Redline of Proposed Amendments to 11 Miss. Admin. Code Part 2, Chapter 2 - "Permit Regulations for the Construction and/or Operation of Air Emissions Equipment"Proposed Amendments to 11 Miss. Admin. Code Part 2, Chapter 5 - "Regulations for the Prevention of Significand Deterioration of Air Quality"Redline of Proposed Amendments to 11 Miss. Admin. Code Part 2, Chapter 5 - "Regulations for the Prevention of Significand Deterioration of Air Quality"

Final Amendments to “Air Emissions Operating Permit Regulations for the Purposes of Title V of the Federal Clean Air Act,” 11 Miss. Admin. Code Pt. 2, Ch.6, Amended February 24, 2022, Effective September 1, 2022 Redline of Amendments to “Air Emissions Operating Permit Regulations for the Purposes of Title V of the Federal Clean Air Act,” 11 Miss. Admin. Code Pt. 2, Ch.6

News and Notices

On February 22, 2024, the Mississippi Commission of Environmental Quality formally adopted revisions to MDEQ’s air regulations – specifically Chapters 2 and 5 – to address certain finalized Federal rules. As a result, the Environmental Permits Division (EPD) will no longer be required to publish a public notice within a general newspaper for any permitting action associated with a Synthetic Minor Operating Permit (SMOP), a Permit to Construct Air Emissions Equipment, or a Prevention of Significant Deterioration (PSD) Permit to Construct Air Emissions Equipment effective March 25, 2024. Therefore, in an effort to remain transparent and informative, EPD hereby announces that it will use the existing Draft Permit Public Notice webpage to showcase the public notice and supporting documentation for any draft SMOP, draft Permit to Construct Air Emissions Equipment, or draft PSD Permit to Construct Air Emissions Equipment created after March 25, 2024.

EPD encourages anyone who may be interested in receiving routine notifications on permitting-related public notices to sign-up at their Public Notice Distribution webpage.

Public Notice of Title V Fee for FY2025 (February 2024)

Visible Emissions Evaluation Training and Certification (Smoke School), Spring and Fall 2024

Changes to Asbestos and Lead-Based Paint Notification Forms and New Email Address for Submission

2022 Air Quality Data Summary

Federal Rulemakings

Proposed Rule: Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act (Public comment period: September 27, 2023 - November 13, 2023)

Proposed Rule: Infrastructure for New HAP Additions (Public comment period: September 13, 2023 - November 13, 2023)

Comment Deadline Extended: Proposed rule for extensive changes to the Air Emissions Reporting Requirements in 40 CFR Part 51, Subpart A, which expands emissions inventory reporting requirements. (Public comment period: August 9, 2023 - November17, 2023)

Stay of Good Neighbor FIP requirements in Mississippi (Published: July 31, 2023; Effective: August 4, 2023)

Plywood & Composite Wood Products MACT - Proposed Federal Register Notice (Public Comment Period: May 18, 2023 - July 18, 2023)Plywood & Composite Wood Products MACT - Redline of Proposed Regulation Revisions

Plywood & Composite Wood Products MACT - EPA Website

Proposed Greenhouse Gas rules affecting new and existing Electric Utility Generating Units (Public Comment Period: May 23, 2023 - August 8, 2023)

Final Good Neighbor FIP for the 2015 Ozone NAAQS (Published: June 5, 2023; Effective: August 4, 2023)

Proposed rules affecting new and existing Crude Oil and Gas Facilities (Public Comment Period: November 11, 2022 - February 13, 2023)

Contact Information

Street Address
Office of Pollution Control
Air Division
515 East Amite Street
Jackson, MS 39201

Mailing Address
Office of Pollution Control
Air Division
P. O. Box 2261
Jackson, MS 39225

Fax Numbers:
(601) 961-5725 or (601) 961-5742

Air Division Organizational Chart