The staff of the Federal Energy Regulatory Commission will prepare an environmental assessment (EA) covering construction and operation of facilities by Algonquin Gas Transmission LLC for its Altantic Bridge Project in New York, Connecticut and Massachusetts.
An April 27 FERC notice announced the opening of the scoping process that the commission will use to gather input from the public and interested agencies on what the EA should cover. Scoping comments need to be filed by June 11. There also will be four public scoping meetings in the May 11-14 period.
Algonquin plans to construct, install, own, operate, and maintain the planned Atlantic Bridge Project, which would involve expansion of its existing pipeline and compressor station facilities located in New York, Connecticut, and Massachusetts. Since sponsoring its open house meetings and initial draft resource reports 1 and 10, Algonquin has reduced the scope of the project. The current scope would be capable of delivering up to 153,000 dekatherms per day of natural gas along various delivery points on the Algonquin and Maritimes and Northeast Pipeline systems.
The planned Atlantic Bridge Project includes approximately 18.1 miles of pipeline comprising the following facilities:
- Replacement of approximately 7.6 miles of existing 26-inch-diameter mainline pipeline with a 42-inch-diameter pipeline as follows: 1.3 miles in Rockland County, New York (Upstream Ramapo Lift and Relay (L&R); 4.0 miles in Westchester County, New York (Stony Point Discharge L&R); and 2.3 miles in Fairfield County, Connecticut (Southeast Discharge L&R).
- Extension of an existing loop pipeline with approximately 7.0 miles of additional 36-inch-diameter pipeline along Algonquin’s existing pipeline right-of-way in Middlesex and Hartford counties, Connecticut (Cromwell Discharge Loop).
- Installation of approximately 3.5 miles of new 30-inch-diameter pipeline off of Algonquin’s existing Q-1 System in Norfolk County, Massachusetts (Q-1 System Loop).
In addition to the pipeline facilities, Algonquin plans to modify two existing compressor stations, construct one new compressor station, modify two existing metering and regulating (M&R) stations and one regulator station, rebuild three existing M&R stations, and construct one new M&R station to replace the existing station. The modifications to the two existing compressor stations would be located in New Haven and Windham counties, Connecticut, and would add a total additional 18,615 horsepower to Algonquin’s pipeline system. The new compressor station would be located in Norfolk County, Mass., and include a new 7,700 horsepower gas-fired compressor unit.
The modifications to the two existing Algonquin M&R stations and one regulator station would occur in New York, Connecticut, and Massachusetts to accept the new gas flows associated with the project. The planned rebuilding of the three existing M&R stations would occur in Plymouth and Bristol counties, Mass. The new M&R station to replace an existing station would be constructed in New London County, Conn.