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Northeast Supply Enhancement (NESE) Project


Transcontinental Gas Pipe Line Company LLC
2800 Post Oak Blvd Level 17
Houston, TX 77056


Northeast Supply Enhancement Project ("NESE Project")



Project Description

The NESE Project is a 26-inch diameter pipeline proposed by Transcontinental Gas Pipe Line Company LLC (Transco) that would transport natural gas from Pennsylvania through New Jersey, traveling underwater in the Raritan Bay and Lower New York Bay to approximately three miles offshore of the Rockaway Peninsula in Queens Borough. Approximately 23.5 miles of underwater pipeline will be installed, of which approximately 17.4 miles would be in New York State waters.

The NESE Project would connect to the existing Rockaway Delivery Lateral in Queens and would provide 400,000 dekatherms per day of incremental capacity to National Grid to serve customers in Brooklyn, Queens, and Long Island. According to Transco, the project is intended to support reliability as well as help displace the use of oil.

The NESE Project would be installed a minimum of 4 feet below the sea floor through a combination of jet trenching, clamshell dredging and horizontal directional drilling (HDD). Construction would be phased to avoid potential impacts to marine species. If permits are ultimately issued, compensatory mitigation would be required to offset unavoidable impacts to benthic resources, including shellfish.

Status of NYSDEC Application Review Process

Transco has applied to the New York State Department of Environmental Conservation (NYSDEC) for the following permits for the NESE Project:

The NESE Project is also required to demonstrate the ability to obtain coverage under the SPDES Stormwater General Permit for Construction Activities (GP-0-15-002) prior to conducting any construction activities that disturb greater than one acre.

Filed application documents for the NESE Project (link leaves DEC website) are available at:

A Notice of Complete Application was issued on January 30, 2019. A Notice of Supplemental Comment Hearing was issued on February 13, 2019. Public comment hearings were held on February 26, 2019 in Brooklyn and on March 6, 2019 in Rockaway Park.

On May 15, 2019, the NYSDEC announced the denial, without prejudice, of the required Clean Water Act Section 401 Water Quality Certification for the proposed NESE pipeline project. The full decision (PDF) is outlined in a letter by Daniel Whitehead, Director, Division of Environmental Permits, NYSDEC.

As currently conceived in the application, construction of the NESE pipeline project is projected to result in water quality violations and fails to meet New York State's rigorous water quality standards. Specifically, construction of the proposed project would result in significant water quality impacts from the re-suspension of sediments and other contaminants, including mercury and copper. In addition, the proposed project would cause impacts to habitats due to the disturbance of shellfish beds and other benthic resources.

DEC conducted a comprehensive review of the NESE application and supporting materials, as well as the more than 14,000 public comments received on the project, before reaching this decision. DEC subjects all applications for environmental permits to an extensive and transparent review process that encourages public input at every step‎.

NEPA and FERC Process

The Federal Energy Regulatory Commission (FERC) is the lead agency for the environmental review of interstate natural gas pipelines under the federal Natural Gas Act. FERC staff prepared a Final Environmental Impact Statement (FEIS), dated January 25, 2019 for the NESE Project, Docket No. CP17-101, pursuant to the National Environmental Policy Act (NEPA). The FERC FEIS can be viewed and downloaded (link leaves DEC website) at: by entering the Docket No. and the date of the FEIS in the search boxes.

The federal environmental review process conducted by FERC pursuant to NEPA takes the place of an environmental review conducted under the State Environmental Quality Review Act. NYSDEC evaluates the FERC NEPA documents and the permit applications submitted by applicants to NYSDEC to ultimately make a determination regarding issuance of NYSDEC authorizations.


Karen Gaidasz, Project Manager
Major Projects Management
NYSDEC - Division of Environmental Permits
625 Broadway, 4th Floor, Albany, NY 12233-1750
Phone: (518) 402-9167, Fax: (518) 402-9168

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    Albany NY 12233-1750
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