Are you ready for the Environmental Protection Agency’s (EPA) next phase of air quality standards? The EPA periodically reviews National Ambient Air Quality Standards (NAAQS) and, in some instances, revises the standards. Here, we will look at the most recent changes in air quality standards, discuss what the future may look like for air pollution control, and provide insight on what you can do to prepare for future changes.
NAAQS
The Clean Air Act was a significant milestone for air pollution control. It notably established the EPA which is tasked with the protection of both human health and the environment. The EPA is required to set NAAQS for the following six principal pollutants:
- Carbon Monoxide (CO)
- Lead (Pb)
- Nitrogen Dioxide (NO2)
- Ozone (O3)
- Particle Pollution/Particulate Matter
- Sulfur Dioxide (SO2)
Recent Changes
The most recent changes to ambient air quality standards occurred on February 7, 2024 when the EPA strengthened the NAAQS for particulate matter (PM). PM includes the following:
- PM10 (inhalable particles, with diameters 10 micrometers and smaller)
- PM2.5 (fine inhalable particles, with diameters 2.5 micrometers and smaller)
The EPA has strengthened the level of the primary annual PM2.5 standard to 9.0 micrograms per cubic meter (~0.25 micrograms per CFM).
Particulate matter can cause serious health problems when inhaled. Some particles can even get into a person’s lungs and bloodstream. Fine particles (PM2.5) pose the greatest health risk. Fine particles are also the leading cause of reduced visibility throughout the United States. In a 2024 news release, the EPA indicated that “99% of U.S. counties are projected to meet the more protective standard in 2032, likely the earliest year that states would need to meet the revised standard.”
Future Changes
Looking forward, several focus areas concerning air quality will likely gain attention. Two potential focus areas include lower pollution limits and greenhouse gas emissions.
Lower Pollution Limits
It is unlikely that the EPA will loosen any of its air quality standards. The EPA is more likely to strengthen its air quality standards, resulting in lower acceptable limits for air pollutants. Best Available Control Technologies (BACTs) will continue to be evaluated by the EPA to ensure lower emissions are attainable with the currently available technology or systems in the marketplace. The result could be upgrades or installation of new systems to meet the regulations.
Greenhouse Gas Emissions
Greenhouse gases trap heat in the atmosphere. Leading greenhouse gases include the following: carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorinated gases. The EPA has faced increased pressure to address greenhouse gas emissions. If the EPA responds to this pressure, greenhouse gas emissions could be added to the list of pollutants requiring NAAQS.
How to Prepare
Air quality has benefited from the Clean Air Act, though there is still work to be done. When it comes to stronger air quality standards, it is not a matter of if. It is a matter of when. Industries can and should be prepared for stricter emission limits. There are steps that companies can take now to prepare for EPA’s next phase of air quality standards.
Improve Existing Systems
Existing air pollution control systems can and should be improved to meet stronger air quality standards. Inefficient systems impact more than just the bottom line. Inefficient systems negatively impact employees and surrounding communities. Knowledgeable and experienced engineers are the key to improving and building upon existing systems.
Invest in New Technologies
Emerging technologies can help companies more effectively meet air quality standards. Past emission problems have been mitigated by investing in and adopting new systems. Companies must continue to invest in innovative approaches to reducing pollution.
Partner With LDX Solutions
LDX Solutions is a leader in air pollution control technologies. We work with our partners to provide custom air pollution control systems that meet the highest standards. From inspection to installation and ongoing support, LDX Solutions ensures you are ready for the future.
Are you ready to start preparing for the EPA’s next phase of air quality standards? Contact LDX-Solutions today.
