Laws & Regulations

Significant Impact Levels for Ozone and Fine Particles

Guidance on SILs for Air permitting

Participate in the Permitting Process

Provides information on how the public can comment on PSD permits, NSR regulations and actions to approve state and local programs.

Proposed Rule and Related Materials for Heavy-Duty Engine and Vehicle, and Nonroad Technical Amendments

EPA is proposing to amend provisions in the Medium- and HeavyDuty Greenhouse Gas Emissions and Fuel Efficiency final rule issued on September 15, 2011.

North Carolina SIP: Subchapter 2Q Air Quality Permit Requirements: Section NCAC 2Q.800: Exclusionary Rules

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section NCAC 2Q.800: Exclusionary Rules as of 10/01/23

North Carolina SIP: Subchapter 2Q Air Quality Permit Requirements: Section NCAC 2Q.300: Construction And Operating Permits

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section NCAC 2Q.300: Construction And Operating Permits as of 10/01/23

Final Rule for Fuel Economy Labeling of Motor Vehicles: Revisions To Improve Calculation of Fuel Economy Estimates

The U.S. Environmental Protection Agency (EPA) is finalizing new test methods for calculating the fuel economy estimates, which are posted on window stickers of new cars and trucks.

North Carolina SIP: Subchapter 2Q Air Quality Permit Requirements: Section NCAC 2Q.200: Permit Fees

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section NCAC 2Q.200: Permit Fees as of 10/01/23

North Carolina SIP: Subchapter 2Q Air Quality Permit Requirements: Section NCAC 2Q.100: General Provisions

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section NCAC 2Q.100: General Provisions as of 10/1/23

Proposed Rule for Fuel Economy Labeling of Motor Vehicles: Revisions To Improve Calculation of Fuel Economy Estimates

Link to Federal Register notice and Final Rule.

North Carolina SIP: Subchapter 2D - Air Pollution Control Requirements: Section 2D.2600: Source Testing

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section 2D.2600: Source Testing as of 10/1/23

North Carolina SIP: Subchapter 2D - Air Pollution Control Requirements: Section 2D.2400: Clean Air Interstate Rules

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section 2D.2400: Clean Air Interstate Rules as of 10/1/23

North Carolina SIP: Subchapter 2D - Air Pollution Control Requirements: Section 2D.2000: Transportation Conformity

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section 2D.2000: Transportation Conformity as of 10/1/23

North Carolina SIP: Subchapter 2D - Air Pollution Control Requirements: Section 2D.1900: Open Burning

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section 2D.1900: Open Burning as of 10/01/23

North Carolina SIP: Subchapter 2D - Air Pollution Control Requirements: Section 2D.1400: Nitrogen Oxides Emissions

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section 2D.1400: Nitrogen Oxides Emissions as of 10/01/23

North Carolina SIP: Subchapter 2D - Air Pollution Control Requirements: Section 2D.1000: Motor Vehicle Emission Control Standards

Establishes a system for classifying air pollution sources deemed by Commission to be of sufficient importance to justify classification or control - Section 2D.1000: Motor Vehicle Emission Control Standards as of 10/01/23