During Wednesday's press conference in East Palestine, 21's Corey McCrae pressed Governor DeWine about the lack of signage warning people to stay away from creeks that may still be contaminated in that area.

"If there's even the slightest possibility that it's unsafe, why has that not been done?" he asked DeWine. Testing on those creeks continues as residents continue to express concerns about the air, water and soil around them.

Before admitting that those signs need to be posted, the governor said "people are not allowed to go in, into that area...if there's a problem about the security, we certainly will look at that, but I'm not aware of a problem."

Meanwhile, US EPA officials rolled out their new incident command post in nearby Columbiana.
They said that's where crews will use mobile labs and trailers to do real-time testing and oversee cleanup efforts.

"We're not leaving until the work is done," said Debra Shore with US EPA Region 5 out of Chicago. "We're committed to this community."

The US Public Health Service will do door-to-door assessments of chemical exposures Thursday.
As it does, the Federal Railroad Administration will start doing assessments of its own.
Crews will examine rail routes throughout the us that see a lot of hazardous chemical traffic using both field personnel and technology to assist them.

"The conditions of track quality...signal and train control infrastructure and systems, operating practices, dispatch and crew, mechanical equipment including tank cars used to transport hazardous materials," explained FRA administrator Amit Bose.

Governor DeWine also said his latest conversation with Norfolk Southern CEO Alan Shaw focused on better preparing volunteer fire departments for these incidents, since they're often the first ones on the scene.