Mariner East pipeline builder Energy Transfer is back at the area near Marsh Creek State Park to clean up more drilling mud.

Lawmakers in both parties acknowledge the measure impedes government transparency and public safety, but powerful special interests stand in the way of any major changes.

State environmental regulators plan to meet with Sunoco over violations with its Mariner East pipeline. The latest was another involving Snitz Creek.

Investigators in Chester County combed through thousands of financial documents to link a Harrisburg-area security firm with Energy Transfer’s alleged effort to have Pennsylvania constables illegally provide private security for Mariner East 2 pipeline sites.