Baykeeper v. NYSDEC

Court of Appeals for the Second Circuit·Decided August 21, 2026·No. 25-2938·Unpublished

Opinion

25-2938 Baykeeper v. NYSDEC

UNITED STATES COURT OF APPEALS FOR THE SECOND CIRCUIT

SUMMARY ORDER

Rulings by summary order do not have precedential effect. Citation to a summary order filed on or after January 1, 2007, is permitted and is governed by Federal Rule of Appellate Procedure 32.1 and this court’s Local Rule 32.1.1. When citing a summary order in a document filed with this court, a party must cite either the Federal Appendix or an electronic database (with the notation “summary order”). A party citing a summary order must serve a copy of it on any party not represented by counsel.

At a stated term of the United States Court of Appeals for the Second Circuit, held at the Thurgood Marshall United States Courthouse, 40 Foley Square, in the City of New York, on the 21st day of August, two thousand twenty-six.

PRESENT: STEVEN J. MENASHI, SARAH A. L. MERRIAM

Circuit Judges,

JOHN P. CRONAN,

District Judge. *

RARITAN BAYKEEPER, INC., FOOD & WATER WATCH, PROTECTORS OF PINE OAK WOODS, INC., SIERRA CLUB, SURFRIDER FOUNDATION, NATURAL RESOURCES DEFENSE COUNCIL, INC., Petitioners,

v. No. 25-2938 NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION, AMANDA LEFTON, COMMISSIONER, NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION,

*Judge John P. Cronan of the United States District Court for the Southern District of New York, sitting by designation.

TRANSCONTINENTAL GAS PIPELINE COMPANY, LLC, Respondents. †

For Petitioners Raritan Baykeeper, Inc., SUSAN J. KRAHAM, Earthjustice, New Food & Water Watch, Protectors of Pine York, NY (Nicholas Loh, Moneen Oak Woods, Inc., Sierra Club, and Nasmith, Earthjustice, New York, NY, Surfrider Foundation: Ann Jaworski, Earthjustice, Chicago, IL, on the brief).

For Petitioner Natural Resources Jared E. Knicley, Natural Resources Defense Council, Inc.: Defense Council, Washington, DC, Jackson P. Garrity, Natural Resources Defense Council, Chicago, IL, Mark A. Izeman, Natural Resources Defense Council, New York, NY.

For Respondent New York State BRIAN LUSIGNAN, Assistant Solicitor Department of Environmental General, Environmental Protection Conservation: Bureau (Barbara D. Underwood, Solicitor General, Jeffrey W. Lang, Deputy Solicitor General, Susan L. Taylor, Meredith G. Lee-Clark, Kyle Burns, Assistant Attorneys General, Environmental Protection Bureau, on the brief), for Letitia James, Attorney General of the State of New York, Albany, NY.

† The Clerk of Court is directed to amend the caption as set forth above.

For Respondent Transcontinental Gas YVONNE HENNESSEY, Barclay Pipe Line Company, LLC: Damon LLP, Albany, NY.

On a petition for review from the New York State Department of Environmental Conservation.

Upon due consideration, it is hereby ORDERED, ADJUDGED, and DECREED that the petition for review is DENIED.

Petitioners Raritan Baykeeper, Inc., Food & Water Watch, Protectors of Pine Oak Woods, Inc., Sierra Club, Surfrider Foundation, and Natural Resources Defense Council, Inc., petition for review of a decision by the New York State Department of Environmental Conservation (“NYSDEC”) granting an application by Transcontinental Gas Pipe Line Company, LLC, (“Transco”) for a Water Quality Certification (“WQC”) pursuant to § 401 of the Clean Water Act. Transco was required to obtain a WQC before beginning construction of its natural gas pipeline, the Northeast Supply Enhancement (“NESE”) project, which will traverse seventeen miles of sea floor in state waters in the New York Harbor. NYSDEC denied Transco’s similar application for a WQC in 2020 but concluded that Transco’s 2025 application addressed the agency’s concerns about the previous application and demonstrated that the NESE project would comply with the state’s water quality standards. The petitioners argue that NYSDEC acted arbitrarily and capriciously and contrary to law when it issued the 2025 WQC to Transco. The petitioners seek vacatur of the 2025 WQC. We assume the parties’ familiarity with the facts, procedural history, and issues on appeal.

I

In March 2017, Transco applied to the Federal Energy Regulatory Commission for a certificate of public convenience and necessity authorizing it to construct and operate roughly 37 miles of natural gas pipeline and various

associated facilities as part of the NESE project. The proposed NESE project would transport natural gas from Pennsylvania to customers in Brooklyn, Queens, and Long Island. The project would include constructing a 26-inch-diameter underwater natural gas pipeline loop spanning 23.5 miles across Raritan Bay, off the coasts of New York and New Jersey (the “Raritan Bay Loop”).

FERC issued a Final Environmental Impact Statement (“FEIS”) for the NESE project in January 2019. FERC observed that the New York waters that the project would cross are designated as “impaired” under the Clean Water Act, meaning the “current pollution control technologies alone cannot meet the water quality standards set for that waterbody.” App’x 376. Still, FERC determined that construction could have “adverse effects on aquatic species” in the roughly 88 acres of seafloor directly affected by the project. Id. at 325. Burying the pipeline would require dredging the seabed of Raritan Bay, and aquatic organisms would be directly impacted by mechanical activities and construction equipment and indirectly impacted by sediment disturbance and redeposition as well as noise. Transco’s dredging activities would also cause sediments contaminated with mercury and copper to become suspended. FERC explained that benthic invertebrates—such as clams, worms, and crustaceans—and bottom-dwelling fish species would be most affected because they cannot vacate the disturbed area. The Raritan Bay Loop would cross the most productive hard clam area in New York Waters, based on Transco’s estimation at the time, based on a 2016 survey, that the hard clam density in the area is approximately 69.6 individuals per square foot.

FERC ultimately concluded, however, that “[g]iven the relatively short duration of dredging and backfilling activities, and the rapid pace at which resuspended sediments are expected to settle out of the water column,” the impacts of the sedimentation and turbidity due to the NESE project on aquatic resources “are anticipated to be temporary and minor.” Id. at 396. FERC recommended that Transco work with NYSDEC to develop mitigation plans before commencing construction. In May 2019, FERC issued Transco a certificate of public convenience and necessity approving the NESE project, subject to certain

environmental conditions in the FEIS. See Order Issuing Certificate, Docket No. CP17-101-000, 167 FERC ¶ 61110 (May 3, 2019), 2019 WL 1977358; see also App’x 435.

To proceed with the NESE project, Transco was also required to obtain a Water Quality Certification from NYSDEC pursuant to § 401 of the Clean Water Act, which requires applicants for federal permits to provide federal licensing agencies such as FERC with certifications from affected states confirming that the proposed activity “will comply” with state water quality standards and requirements. 33 U.S.C. § 1341(a)(1). Between 2017 and 2019, Transco submitted three WQC applications to NYSDEC for the NESE project, each of which was denied. The agency denied Transco’s third application in 2020 after a public comment period during which NYSDEC received over 16,000 comments.

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