Pennsylvania regulators are fining Sunoco more than $12 million for problems with a massive natural gas pipeline project, but letting work resume under a consent agreement.
The Department of Environmental Protection said Thursday that Sunoco Pipeline has made changes since work on the $2.5 billion Mariner East 2 pipeline was halted Jan. 3.
The 350-mile project has been plagued by spills and leaks of drilling fluid and improper construction methods.
In stopping the work, the state agency said Sunoco demonstrated it couldn't or wouldn't comply with Pennsylvania's clean streams law and other regulations.
The company didn't immediately respond to messages seeking comment.
The 20-inch pipeline will move natural gas liquid products from Marcellus Shale drilling fields in western Pennsylvania to a terminal in Philadelphia.
It's scheduled for completion by summer.