The Third Circuit Court of Appeals ruled on September 8, 2026, to vacate a Water Quality Certification issued by the New Jersey Department of Environmental Protection (NJDEP) for the Northeast Supply Enhancement Project (NESE) proposed by Transcontinental Gas Pipe Line Company, LLC. This decision affects several environmental organizations that challenged the certification, raising concerns about potential harm to water quality in Raritan Bay.
The court's ruling is significant as it emphasizes the importance of thorough environmental reviews and public participation in the permitting process for large infrastructure projects. The decision underscores the need for agencies like NJDEP to ensure compliance with water quality standards before granting permits.
Background
The case, Natural Resources Defense Council Inc v. New Jersey Department of Environmental Protection, docket number 26-1252, involved multiple environmental groups, including the Natural Resources Defense Council (NRDC) and NY/NJ Baykeeper. These organizations challenged NJDEP's decision to issue a Water Quality Certification for the NESE project, which aimed to expand an existing interstate natural gas pipeline system by constructing a new segment beneath Raritan Bay.
The dispute began when Transco applied for a certification to construct the pipeline in June 2018. NJDEP initially denied the application in 2019, citing concerns about the project's impact on freshwater wetlands and water quality. The agency identified toxic contaminants in sediment samples along the proposed dredging route, which raised alarms about potential adverse effects on aquatic life and water quality. Following a series of applications and denials, Transco submitted a revised application in May 2025, which NJDEP eventually approved.
The Ruling
The Third Circuit Court, led by Circuit Judge Roth, ruled that NJDEP acted arbitrarily and capriciously in issuing the Water Quality Certification. The court found that NJDEP had deferred critical monitoring and adaptive management requirements that were essential to ensuring compliance with water quality standards. The ruling stated, "The Water Quality Certification is deficient in another respect. Even apart from the deferred plans, NJDEP’s decisional documents do not adequately explain its conclusion that Transco’s dredging will comply with New Jersey’s water quality standards."
The court emphasized that NJDEP's approval lacked a clear basis for ensuring that the project would not harm water quality, particularly given the potential for dredging to stir up toxic contaminants in the bay. The judges concluded that NJDEP's failure to require final approval of monitoring plans before allowing dredging constituted a significant oversight.
Impact
This ruling has widespread implications for environmental protection in New Jersey and beyond. It reinforces the necessity for state agencies to conduct thorough reviews and ensure compliance with environmental standards before issuing permits. The decision may set a precedent for future cases involving water quality certifications, emphasizing the importance of public participation and transparency in the permitting process.
The ruling also highlights the ongoing tension between infrastructure development and environmental protection, particularly in regions where sensitive ecosystems are at risk. Environmental organizations are likely to use this decision to advocate for stricter regulations and oversight of similar projects in the future.
What's Next
Transcontinental Gas Pipe Line Company may seek to appeal the ruling, although the court's decision places significant hurdles in the way of the project's advancement. The case serves as a reminder of the importance of environmental safeguards in infrastructure development, and further legal challenges may arise as environmental groups continue to advocate for the protection of water quality in New Jersey.