[3] In June 2017, the New Jersey Department of Environmental Protection rejected a water quality permit application.
In the United States Supreme Court case PennEast Pipeline Co. v. New Jersey, decided in June 2021, the Court affirmed that PennEast had been properly delegated the power of eminent domain from the federal government, to which by their nature, states had agreed to upon joining the union.
The Federal Energy Regulatory Commission performed a study to analyze the potential environmental impact of the project.
These measures consist of PennEast filing many additional documents detailing the company's responses to numerous environmental and cultural concerns.
The measures also include contingencies for cases in which rare animal or plant life is discovered that would be impacted by the construction.
"FERC has once again demonstrated its tremendous bias for, and partnership with, the pipeline industry," said Maya van Rossum, leader of the Delaware Riverkeeper Network.
David Pringle, state campaign director of Clean Water Action, suggested the FERC was serving a partisan interest over the interests of the people of New Jersey, suggesting "The FERC needs to remember it works for the people of the United States not PennEast.
This group has created a website encouraging residents of the affected towns (see the ‘Route’ section above) to argue against the project.
State campaign director David Pringle said "PennEast would destroy open space and property rights, pollute our water, and exacerbate the climate crisis," at a protest in Trenton in October 2016.