By ME 2 pipeline construction site near the Chester County Library and business route 30. (Susan Phillips/WHYY) This article originally appeared on StateImpact Pennsylvania. — The Chester County District Attorney’s office, using a novel approach to try to hold polluters accountable, filed a consent decree with Mariner East pipeline builder Sunoco Pipeline and Energy Transfer following a civil suit the office filed under the Pennsylvania Clean Streams Law. The law allows county district attorneys to bring public nuisance claims in order to stop polluting activities. The agreement allows the Chester County Court of Common Pleas to hold the company accountable for any future violations of permits issued by the Department of Environmental Protection and the Public Utility Commission.