As Conrail pushes to settle claims over a train derailment last November that spewed toxic gas into Paulsboro and caused an evacuation of some residents, plaintiff lawyers are complaining about the company’s tactics.

Consolidated Rail Corporation filed an action in Gloucester County Superior Court on Feb. 4, seeking approval of agreements by which parents or guardians of more than 50 children, aged two months to 17 years, waive all future claims and the right to join in any class action over the spill.