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

MDEQ hereby provides notice on the opportunity to comment on the proposed amendments to the agency’s asbestos regulations – titled ““Regulations for the Accreditation and Certification of Asbestos Abatement Personnel” (Mississippi Administrative Code, Title 11, Part 2, Chapter 10). The public comment period will begin January 22, 2026, and end February 23, 2026. Any interested party that wishes to provide comment may do by submitting comments (via hand-mail or electronically) to the attention of Mr. Dennis Kelly. In addition, a public hearing will be held virtually via Zoom on Monday, February 23, 2026, at 1:30 pm. To participate in the hearing, please register here. or contact Bryan Williams at 601-961-5799 / bwilliams@mdeq.ms.gov.

Below please find the official notice as well as a “clean version” and “redline version” of the proposed regulations.

Asbestos Certification Regulations 11 Miss. Admin. Code Pt. 2 Ch. 10 - Clean Version (January 22, 2026.)Asbestos Certification Regulations 11 Miss. Admin. Code Pt. 2 Ch. 10 - Redline Version (January 22, 2026.)

Final Amendments to 11 Miss. Admin. Code Part 2, Chapter 6 – “Air Emissions Operating Permit Regulations for Purposes of Title V of the Federal Clean Air Act” (Effective August 19, 2024)

Federal Rulemakings

Wednesday March 18, 2026
NESHAP: Polyether Polyols Production (PEPO), Industry Review, final rule
40 CFR part 63, subpart PPP and Subparts A and U
This final rule is effective on March 18, 2026

https://www.govinfo.gov/content/pkg/FR-2026-03-18/pdf/2026-05261.pdf

Tuesday March 10, 2026
NSPS for New Stationary Sources and Emission Guidelines (EG) for Existing Sources: Large Municipal Waste Combustors, Voluntary Remand Response and Five-Year Review. Final rule
40 CFR Part 60, Subparts A, Cb, Eb, VVVV, WWWW

https://www.govinfo.gov/content/pkg/FR-2026-03-10/pdf/2026-04646.pdf

Tuesday, February 24, 2026
NESHAP: Coal- and Oil-Fired Electric Utility Steam Generating Units (MATS): Final rule, Repeal
Effective date April 27, 2026
40 CFR Part 63, Subpart UUUUU, and Subpart A
EPA proposes to remove the documentation requirements in 40 CFR 68.90(b)(6) and 68.95(a)(1)(i)

https://www.govinfo.gov/content/pkg/FR-2026-02-24/pdf/2026-03638.pdf

Wednesday, February 18, 2026
Fyi: Rescission of the Greenhouse Gas Endangerment Finding and Motor Vehicle Greenhouse Gas Emission Standards Under the Clean Air Act

https://www.govinfo.gov/content/pkg/FR-2026-02-18/pdf/2026-03157.pdf

Friday, January 30, 2026
Interstate Transport Plan Review for the 2015 Ozone NAAQS: Proposed rule, reconsideration of final rule.
40 CFR Part 32 Mississippi __ subpart Z

https://www.govinfo.gov/content/pkg/FR-2026-01-30/pdf/2026-01844.pdf

Thursday, January 15, 2026
NSPS Review for Stationary Combustion Turbines and Stationary Gas Turbines, Final rule
40 CFR Part 60 Subparts, A, GG, KKKK, & KKKKa

https://www.govinfo.gov/content/pkg/FR-2026-01-15/pdf/2026-00677.pdf

Tuesday, January 6, 2026
Extension of the SIP Due Date for the Regional Haze Third Implementation Period, from July 31, 2028, to July 31, 2031

https://www.govinfo.gov/content/pkg/FR-2026-01-06/pdf/2026-00003.pdf

Friday, January 2, 2026
Congressional Review Act Revocation of 2024 Review of Final Rule Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act
40 CFR Part 63, Subpart A, general provisions

https://www.govinfo.gov/content/pkg/FR-2026-01-02/pdf/2025-24202.pdf

News and Notices

MDEQ hereby provides the attached document for the public distribution of the complete “Response to Comments” document that has been prepared after MDEQ’s evaluation of comments received during the public comment period for the proposed Prevention of Significant Deterioration (PSD) air permitting action requested by MZX Tech, LLC. The document contains the following materials: MDEQ’s responses to submitted comments; a compilation of all comments received; the certified transcript of the public hearing held Feb. 17, 2026; the updated draft PSD Permit to Construct and supporting Preliminary Determination (“Statement of Basis”).

Please know that the information contained within this document has already been provided to the Mississippi Environmental Quality Permit Board for use in their consideration of the proposed air permitting action at their upcoming meeting on March 10 (at 9:00 AM and located at 515 East Amite Street; Jackson, MS 39201).

MDEQ Response to Comments - MZX Tech, LLC (Complete Packet)

MDEQ is providing notice to the general public on the finalized Title V Program fee schedule for state fiscal year 2027 (July 1, 2026 – June 30, 2027). More information may be found in the “FY2027 Title V Program Fee – Notice of Final Fee Schedule” document below.

FY2027 Title V Program Fee Final Public Notice FY2027 Title V Program Fee Final Order

Effective July 1, 2025, the emissions portion of the Title V fee schedule shall be $27.00 per ton of each regulated air pollutant for the state fiscal year (July 1, 2025 to June 30, 2026)

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.

Visible Emissions Evaluation Training and Certification (Smoke School), Spring and Fall 2025

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

2025 Air Quality Data Summary

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