The District of Columbia’s main air pollution control law focuses on reducing emissions from a variety of sources, including industrial and commercial buildings, vehicles, and building construction. According to these laws, emission reduction plans are published and permits are issued following the plans.

Title 20 District Municipal Regulations:

• Chapter 1 - General
• Chapter 2 - General and Non-attainment Area Permits
• Chapter 3 - Operating Permits and Acid Rain Programs
• Chapter 4 - Ambient Monitoring and Emergency Procedures
• Chapter 5 - Source Monitoring and Testing
• Chapter 6 - Particulates
• Chapter 7 - Volatile Organic Compounds
• Chapter 8 - Asbestos, Sulfur, Nitrogen Oxides, and Lead
• Chapter 9 - Motor Vehicular Pollutants, Lead, Odors, and Nuisance Pollutants
• Chapter 10 - Nitrogen Oxides Emissions Budget Program
• Chapter 12  - Demand Response Generating Sources
• Chapter 14 – Air Toxics and Hazardous Air Pollutants
• Chapter 15 - General and Transportation Conformity

Recent Laws and Regulations:

• Notice of Public Comment Periods – Rule Proposal and Proposed SIP Amendment for Reasonably Available Control Technology for Major Stationary Sources of the Oxides of Nitrogen
  Notice is hereby given that proposed regulations for “Reasonably Available Control Technology for Major Stationary Sources of the Oxides of Nitrogen” are open for public comment. All comments must be submitted and received by 4:30 PM Monday, May 24, 2021. 

  Additionally notice is hereby given that a proposed State Implementation Plan (SIP) amendment that would adopt these regulations into the District’s SIP are also open for public comment. All comments must be submitted and received by 4:30 PM Monday, May 24, 2021. An online hearing will be held on that date at 5:30 PM. The proposed SIP amendment is located here and more information on the hearing can be found here. Read More>>
   

• Notice of Proposed Rulemaking
  Air Quality Permit Fees and Synthetic Minor Permitting Program - DC REGS Notice ID: 6385042
   
• Notice of Proposed Rulemaking
  Chapters 1 and 2 of the Air Quality Regulations - DC REGS Notice ID: 6385139
   
• Air Quality Amendment Act of 2014- Enforcement, Demand-Response Generators, and Mold

- EPA’s Plain English Guide to the Clean Air Act