Click the link to read the article on The Denver Post website (Noelle Phillips). Here’s an excerpt:
January 13, 2025
Five new compounds soon will be listed as priority toxic air contaminants in Colorado and, over the next two years, the state’s Department of Public Health and Environment and Air Quality Control Commission will determine out how to regulate them. The state’s Air Pollution Control Division will recommend five compounds to be regulated to the commission during its two meetings that begin Thursday. The creation of the list of toxic air contaminants is the result of a years-long effort from environmentalists and public health advocates who want the state to do more to protect people from the pollution that can cause cancers, such as leukemia and lymphoma, and lung diseases, such as asthma, and can harm women’s reproductive health. For years, environmentalists have complained that air pollution permits issued by the federal and state governments allow companies to pollute with little attention given to how much of those contaminants are dangerous to human health…
The five toxic air contaminants being proposed for regulation are:
- Acrolein, which is created when fossil fuels are burned by wood-burning, industrial boilers and reciprocating engines, and it is also used to make a polymer for paints, coatings and adhesives. Acute, short-term inhalation can cause eye and respiratory tract irritation. It is not considered a cancer risk.
- Benzene, a carcinogen released when fossil fuels are burned, including in car exhaust and oil and gas extraction and production. It also is created by cement manufacturing, waste disposal and wood burning. Acute exposure may cause drowsiness, dizziness and headaches, as well as eye, skin and respiratory tract irritation, and unconsciousness at high levels. Chronic inhalation has caused cancer, various blood disorders and affects women’s reproductive organs, the Environmental Protection Agency has reported.
- Ethylene oxide, which is used to make other products such as antifreeze, textiles, adhesives, plastics and detergents. It’s used to sterilize medical equipment, including at Terumo BTC in Lakewood to sanitize medical equipment. It causes cancers in humans, including lymphoma, myeloma, leukemia and breast cancer.
- Hydrogen sulfide, highly toxic gas that smells like rotten eggs. It is released by wastewater treatment facilities, meat processing facilities, petroleum refining, manufacturing of asphalt and roofing material and places where large quantities of manure are stored. It can cause people to pass out due to high exposure. Low exposure can cause headaches, memory loss, balance problems and fatigue. It is not considered a carcinogen but data is limited on how it affects children’s health or women’s reproductive health, according to the EPA.
- Hexavalent chromium is a by-product of industrial processes such as metal fabricating and by burning coal for electricity. It can leak into water systems and into the air. It can cause cancer and impact the respiratory system, kidneys, liver, skin and eyes, the EPA’s website says.





