Court Invalidates New Jersey Permit for $1B Gas Pipeline

The U.S. 3rd Circuit Court of Appeals ruled on September 8 that Williams cannot rely on the existing New Jersey Department of Environmental Protection certification for its proposed $1 billion underwater gas pipeline. The three-judge panel determined that the state agency acted in an arbitrary and capricious manner by failing to require the company to demonstrate protection for buried contamination in Raritan Bay prior to dredging operations. This decision nullifies a key regulatory hurdle for the Northeast Supply Enhancement project, which was first proposed in 2017.

Judge Jane Richards Roth, writing for the panel, noted that no prescribed agency approval stood between the unfinished plans and the start of dredging. The ruling does not terminate the project but returns the matter to state regulators, who must now either supplement their explanation, issue a revised certification, or reach a different conclusion. Williams stated it is reviewing the decision but maintains that the pipeline remains critical for regional energy reliability and meeting growing demand.

Regulatory failure in certification process

The court found that NJDEP approved the certification without ensuring that toxic material in the seafloor would be adequately protected during construction. This oversight was central to the legal challenge brought by the Natural Resources Defense Council and a second coalition of environmental groups. State officials had issued the certification in November 2025, reversing earlier denials in 2019 and 2020 that cited water-quality concerns. The court consolidated the separate lawsuits to address the fundamental flaws in the agency's review process.

Williams is now forced to navigate a potential re-review by the state agency. The company argues that the project serves a broader regional need by moving gas from Pennsylvania to New York City, despite opponents claiming it offers no direct benefit to New Jersey residents. The legal dispute highlights the tension between state-level energy approvals and federal environmental standards, particularly regarding the handling of contaminated sediments in sensitive waterways.

Environmental and economic implications

Critics contend that dredging in Raritan Bay would disturb toxic deposits and damage marine habitats, including wetlands connected to other planned infrastructure. Jackson Garrity, an attorney for the Natural Resources Defense Council, described the ruling as a victory for the rule of law and the state's waterways. The case underscores the financial risks associated with fossil-fuel infrastructure projects that face prolonged environmental litigation and regulatory uncertainty.

This decision is part of a broader debate over how states review gas projects and weigh pollution against long-term investment. Similar issues are arising in North Carolina and Massachusetts, where utilities and residents are grappling with the environmental and health impacts of pipeline expansions. For Williams, the vacated permit adds another layer of complexity to a project that has remained controversial for nearly a decade.

Legal consolidation of environmental challenges

The appeals court consolidated the challenges brought by the Natural Resources Defense Council and a coalition including Food & Water Watch, the New Jersey League of Conservation Voters, and New York/New Jersey Baykeeper. This consolidation allowed the court to address the core procedural deficiencies in the NJDEP's certification process. The ruling emphasizes that state agencies must provide a clear and reasoned basis for their approvals, particularly when significant environmental risks are present.

The decision leaves the final determination with NJDEP, which retains the authority to supplement its analysis or issue a new certification. However, the court's finding of arbitrary action sets a high bar for future approvals. Williams must now prepare for a potential second round of regulatory scrutiny, which could delay the project further and increase costs. The outcome will be closely watched by other gas companies seeking to expand infrastructure in environmentally sensitive regions.