Norfolk Southern Corp.’s plan to remove wrecked rail cars from a derailment that resulted in potentially poisonous gas being released over an Ohio town will destroy evidence of the company’s liability, lawyers for residents say.

Lawyers in proposed class-action lawsuits over the Feb. 3 accident on Friday asked a federal judge to block the company from clearing the wreckage in East Palestine, Ohio. According to the lawyers, Norfolk Southern informed them last week that it planned to move the 11 rail cars by March 1 and would make them available for inspection for only two days.

Adam Gomez, a lawyer for East Palestine residents, said in a court filing that it was “common sense” to keep the wreckage where it is for now. “These communities have questions and we need the evidence to answer them,” he said.