The ATI Flat Rolled Products facility in Brackenridge, also known as Allegheny Ludlum, produced the most-toxic air pollution of any Allegheny County polluter reporting to the federal Toxics Release Inventory. Nearly 40,000 people live within three miles of this steel … Continue reading →

The Harsco Metals plant in Natrona is the second-most-toxic air polluter in Allegheny County, driven in large part by high emissions of chromium compounds. There are more than 33,600 residents within three miles of this scrap metal and slag reprocessing … Continue reading →

U.S. Steel’s Clairton Plant, also known as the Clairton Coke Works, is the third-most-toxic air polluter in Allegheny County. There are roughly 36,500 people living within three miles of this facility. The Clairton plant has been in violation of the … Continue reading →

Universal Stainless and Alloy Products is the fourth-most-toxic air polluter in Allegheny County. There are nearly 66,000 people within just three miles of this specialty steel producer, which is located in Bridgeville. The Title V Clean Air Act permit for … Continue reading →

Thermal Transfer Corp. in Duquesne, which supplies industrial heat exchangers, is the fifth-most-toxic air polluter in Allegheny County. There are approximately 78,600 people who live within three miles of this facility. Three schools are within two miles of this facility, … Continue reading →

Holtec Manufacturing is the sixth-most-toxic air polluter in Allegheny County. Nearly 70,000 people live within three miles of this facility. The metal fabrication plant, located in Turtle Creek, makes equipment for nuclear power plants and for storing nuclear waste. Holtec … Continue reading →

Cheswick Power Plant in Springdale is the last remaining coal-fired electric generating plant in Allegheny County, and ranks seventh in the county for toxic air emissions, having previously been ranked first in 2016. Nearly 33,600 people live within just three … Continue reading →

U.S. Steel’s Mon Valley Works Edgar Thomson Plant, located in Braddock, is the eighth-most-toxic air polluter in Allegheny County. There are more than 90,000 people living within three miles of the plant. Six schools are within one and a quarter mile … Continue reading →

Carpenter Powder Products, Inc., located in Bridgeville, manufactures custom metal powders and is the ninth-most-toxic air polluter in Allegheny County. Nearly 66,000 people live within three miles of this facility. The plant is located less than half a mile from … Continue reading →

PPG Industries, Inc., in Springdale, a paint manufacturing plant, is the tenth-most-toxic air polluter in Allegheny County. Approximately 33,000 people live within three miles of this facility. In 2016, the company paid $59,000 to settle alleged violations of hazardous waste … Continue reading →