The agency agreed to have Sunoco continue construction at eight of 12 locations, where a judge halted work due to public safety and environmental concerns.
The agency held a public event north of Philadelphia in a community where elevated levels of the toxic chemical have been found. Several people said the federal government needs to take more action than it has so far.
States may be able to stop monitoring at some sites, and power plants have more time to close leaking ash ponds.
A township supervisor said Thursday that a township engineer had confirmed the line was part of Mariner East 1. But Sunoco said today that the line was taken out of service in 2015.
Applications for certain things in environmental justice areas — like landfills or coal mines — are on a “trigger permit list” and get more scrutiny from the state Department of Environmental Protection.