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United States. Federal Energy Regulatory Commission

Federal Energy Regulatory Commission Issues Environmental Assessment and Environmental Impact Statement for Transcontinental Gas Pipe Line Company's Northeast Supply Enhancement (NESE) Project

Strategic Insights

— 2 min read

The Federal Energy Regulatory Commission has issued an Environmental Assessment (EA) and Environmental Impact Statement (EIS) for the Northeast Supply Enhancement (NESE) Project, a proposal by Transcontinental Gas Pipe Line Company, LLC (Transco) to reissue a certificate for the project. The NESE Project involves the construction and operation of several facilities in Pennsylvania and New Jersey, including the Quarryville Loop, Madison Loop, and Raritan Bay Loop. Transco requests authority to construct and operate these facilities, as well as add horsepower at two compressor stations and construct additional facilities.

Key Takeaways:

  • The Federal Energy Regulatory Commission has issued an Environmental Assessment and Environmental Impact Statement for the Northeast Supply Enhancement (NESE) Project, a proposal by Transcontinental Gas Pipe Line Company, LLC (Transco) to reissue a certificate for the project.
  • The NESE Project involves the construction and operation of several facilities in Pennsylvania and New Jersey, including the Quarryville Loop, Madison Loop, and Raritan Bay Loop.
  • Transco requests authority to construct and operate these facilities, as well as add horsepower at two compressor stations and construct additional facilities.
  • The project would result in some adverse environmental impacts, but mitigation measures would reduce the impacts to less-than-significant levels.
  • The Commission has relied on the Final EIS, as amended by an EA, to satisfy NEPA requirements for Transco's petition to reissue certificate authority for the Project.
  • The project has been the subject of environmental comments, which have been reviewed by Commission staff.

Statistics:

  • The NESE Project involves the construction and operation of 10.17-mile-long, 42-inch-diameter Quarryville Loop in Lancaster County, Pennsylvania.
  • The project also involves the construction and operation of the 3.43-mile-long, 26-inch-diameter Madison Loop in Middlesex County, New Jersey.
  • The Raritan Bay Loop in Middlesex County, New Jersey, and New Jersey and New York State waters is also part of the project.
  • 21,902 horsepower (hp) would be added at Compressor Station (CS) 200 in Chester County, Pennsylvania.
  • A new 32,000 hp CS 206 would be constructed in Somerset County, New Jersey.
  • Various additional facilities would also be constructed as part of the project.
  • The project would result in some adverse environmental impacts, but mitigation measures would reduce the impacts to less-than-significant levels.
  • The Final EIS, as amended by an EA, has been relied upon by the Commission to satisfy NEPA requirements for Transco's petition to reissue certificate authority for the Project.

Sources:

  • Federal Energy Regulatory Commission Office of Energy Projects, Division of Gas-Environment & Engineering ENVIRONMENTAL ASSESSMENT REPORT (Accession Number 20250711-3024).
  • Transcontinental Gas Pipe Line Company, LLC Petition Received: May 29, 2025 (Docket No: CP17-101-007 and CP20-49-001).
  • Final Environmental Impact Statement (EIS) concerning the NESE Project (Accession Number 20190125-3001).
  • Environmental Assessment (EA) regarding use of an alternative access road to access Compressor Station 206 (Accession Number 20200424-3003).
  • Notice of Petition inviting comments (June 3, 2025).

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