During a town hall on CNN on Wednesday, EPA Administrator Michael Regan responded to a question on whether there was toxic exposure to vinyl chloride after the East Palestine, Ohio derailment in the first 24-48 hours after the derailment that isn't registering in tests by stating that "we saw a spike in the beginning, but since that spike has dissipated, the air quality readings have been below that threshold." Regan also urged people who have health issues to talk to local health officials because "we all want to get to the bottom of this, we want to connect all of these dots, and we want to make this community whole."