A mandatory evacuation is still in place for dozens of residents near where a P&L train derailed Monday morning near Dixie Highway in southwestern Jefferson County, said Jody Duncan, spokeswoman for MetroSafe.A portion of Dixie Highway remains closed, though the shelter-in-place warning and voluntary evacuations were lifted Monday night, Duncan said.The leak of the chemical butadiene (Read: Five Thing to Know About Butadiene) has been stopped but not mitigated, Duncan said. It's unclear when the mandatory evacuation and Dixie road closure will be lifted.WFPL will have more on the train derailment as information becomes available.