The Environmental Integrity Project and Clean Air Council sent a notice of intent to sue Thursday to get the company to comply with state and federal air rules.
The monitors are meant to track the amounts of pollutants like ozone, particulate matter, and carbon monoxide in the air.
Researchers at the University of Pennsylvania say heavy industry could adopt strategies to cut emissions and capture carbon.
Even moderate amounts of air pollution increase the number of children going to emergency rooms for asthma in Allegheny County, a new study finds.
The plaintiffs are asking a judge to find the company guilty of committing over 12,000 violations of the Clean Air Act, and to order US Steel to ensure the plant will never again go without air pollution controls.
A clean-air group criticized the county for limiting its own ability to regulate the company.
PennEnvironment’s “Trouble in the Air” report shows Lancaster had 107 unhealthy air days in 2020, while Harrisburg had 97 and Reading had 82.
An environmental group had challenged the company’s air quality permit.
The company said the county is not “honoring its end of the bargain” struck as part of a 2019 settlement over air pollution violations.
US Steel, other industrial companies will submit plans to lower emissions during weather ‘episodes.’
