Air Pollution Environmental Protection Ozone 
Union of Concerned Scientists
SEPTEMBER 30, 2024
When we breathe the air or drink the water, we’re taking in any potential contaminants all at once—with effects that can combine or even compound. So, incrementally, environmental protection is becoming more like real life, where exposures are not singular and isolated. It’s important to look at the bigger picture.
PA Environment Daily
APRIL 26, 2024
The Department of Environmental Protection published notice in the April 27 PA Bulletin inviting public comments on a proposed declaration of an Exceptional Air Quality Event due to 2023 wildfires from Canada and New Jersey causing elevated levels of nitrogen oxides and volatile organic compounds impacting ozone pollution in Pennsylvania.
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Union of Concerned Scientists
JULY 9, 2024
To explore a small piece of what is at stake, let’s take a quick look at some of the rules currently under review at the EPA: Air emission reporting requirements If finalized and implemented, this rule will improve the way air pollution emissions are estimated and collected by the EPA.
Union of Concerned Scientists
APRIL 2, 2024
Air pollution from ports comes from many sources: ships, trains, tugboats, cargo equipment, and – quite importantly – the trucks that move cargo containers to and from ports. Because drayage trucks tend to be among the oldest tractor trucks on the road, they tend to pollute at greater rates than other tractors.
Union of Concerned Scientists
DECEMBER 1, 2022
California has a longstanding leadership role on transportation pollution, and the Clean Air Act grants the state the right to set strong vehicle emissions standards. We in Colorado have many days of problematic ozone. We need every tool we can apply to gain healthier air. Traffic is a major concern.
PA Environment Daily
APRIL 7, 2025
The amendment would cover pollution from major oil and gas infrastructure and pipelines, power plants and many other facilities that emit these air pollutants. The amendment would cover pollution from major oil and gas infrastructure and pipelines, power plants and many other facilities that emit these air pollutants.
Breezometer
OCTOBER 25, 2021
The United States Environmental Protection Agency (EPA) has developed two air quality Indexes for communicating air quality to the public, the U.S In both the US AQI and the Nowcast, the higher the value, the greater the level of air pollution, and the greater the health concern. Particle pollution (PM 10).
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