Is there someone who knows more about how this stuff is measured, in terms of danger? The CNN article links to Rockdale FB statement as a source and that statement talks of the supposed "average of" measured levels being below "action level" but it doesn't explain how that actually relates to what is safe for a person to inhale. And there's a person in the comments of that same post saying they still see a plume with a video of it. 🫠