By William Opalka

FERC staff has concluded that a 13.5-mile natural gas pipeline expansion to serve increased demand in Connecticut will have “no significant” environmental impact.

The Connecticut Expansion Project, proposed in July 2014 by Tennessee Gas Pipeline, will provide an additional 72.1 million cubic feet per day of firm transportation service to three shippers: Connecticut Natural Gas, Southern Connecticut Gas and Yankee Gas Services.

Public comments on FERC’s environmental assessment of the project are due Nov. 23 (CP14-529).

Tennessee Gas said that gas delivered into its system has increased by 32% over the past four years, with lines serving the state nearing capacity. “Tennessee states that it is only through the expansion of its existing infrastructure that it would be able to deliver the incremental volumes requested by the project shippers in binding precedent agreements, while maintaining service to existing shippers and pressure profiles necessary for system operations,” FERC’s report states.

The demand is being driven by increased gas use in electric generation and heating. The 2013 Connecticut Comprehensive Energy Strategy proposed the addition of 300,000 natural gas heating customers among homes and businesses, most of them switching from fuel oil.

The environmental assessment rejected allegations that Tennessee Gas attempted to reduce the level of environmental scrutiny by improperly separating the Connecticut project from the Northeast Energy Direct Project, which is intended to increase supply throughout New England. (See New England Governors Revise Energy Strategy.)

“The proposed project would function independently from the NED Project,” staff wrote. “… The projects have different purposes [and] different start and end points.”

The Connecticut project, which will predominately use existing rights-of-way, includes:

• 4 miles of new 36-inch-diameter pipeline loop near the Town of Bethlehem, in Albany County, N.Y.;
• 8 miles of 36-inch-diameter pipeline loop near the Town of Sandisfield, in Berkshire County, Mass.; and
• 3 miles of 24-inch-diameter pipeline loop near the Town of Agawam, in Hampden County, Mass., and the Towns of Suffield and East Granby in Hartford County, Conn.

The project also includes modifications to a compressor station in Massachusetts and other facility improvements.

Construction could start this year if approvals are granted, with an in-service date of Nov. 1, 2016, Tennessee Gas said.