There’s a shit-ton of loopholes in this space because the legislation creating the EPA doesn’t require oversight for chemicals in use before 1976. Many of these byproducts are awful, but not subject to regulatory analysis. It’s similar to hoe people say that if we discovered acetaminophen in 2023, it would never be FDA approved!

One branch of my family grew up near the Mobil Refinery on the Newtown Creek in Queens, NYC. 12/12 have had cancers from that place, as do many others.