The new lawsuit that will be made public later on Monday contains the first seven wrongful death claims filed against Norfolk Southern railroad — including the death of a 1-week-old baby. It also alleges the railroad and its contractors botched the cleanup while officials at the EPA and Centers for Disease Control and Prevention signed off on it and failed to warn residents about the health risks. Many of the other parties in the lawsuit cite lingering, unexplained health problems along with concerns something more serious could develop.

“Our clients want truth. They want transparency,” attorney Kristina Baehr said about the roughly 750 people she represents. “They want to know what they were exposed to, which has been hidden from them. They want to know what happened and why it happened. And they want accountability.”