I don’t have exact details but I did work in an civil/environment consulting companies (we worked remediating the GE silicone waste site in Upstate NY .. ) which might be why people are senesitive to the spelling.[1]

But generally those chemical engineers are pretty good at cleaning up the processes (it cheaper, also cheaper to ship manufacturing overseas…)

The Resource Conservation and Recovery act https://en.m.wikipedia.org/wiki/Resource_Conservation_and_Re...

And toxic substance control acts seemed to rules of note.

https://en.m.wikipedia.org/wiki/Toxic_Substances_Control_Act...

GE silicones [1]https://www.epa.gov/hwcorrectiveactionsites/hazardous-waste-...