Wallace partnered with the state Department of Environmental Protection, the EPA and its contractors to collect 15 soil samples from farms across the region for more testing.
Despite testimony to the contrary, Pennsylvania officials say they have found no evidence that animals in Western Pennsylvania were harmed by the East Palestine train derailment.
A state Senate committee hearing in Beaver County on Thursday represented one of the first comprehensive efforts to understand the response on the Pennsylvania side of the border to a train derailment in East Palestine, Ohio on Feb. 3.