Overview:
A 10,200-mile pipeline system, extends from South Texas to New York City, owned by Transcontinental Pipe Line Company, LLC a division of Williams Energy.

See Issues of Current Interest to the Raritan Valley Group | Sierra Club

In 2016 Williams' Transcontinental Gas Pipe Line Company (Transco) has asked the Federal Energy Regulatory Commission for permission to begin the pre-filing process on a new project, called the Northeast Supply Enhancement project (NESE). The new project is meant to increase pipeline capacity and flows heading into northeastern markets. In particular, Transco wants to provide more natural gas to utility giant National Grid beginning with the 2019-2020 heating season. National Grid operates in New York City, Rhode Island and Massachusetts. The Northeast Supply Enhancement project would build 10 miles of new pipeline in Lancaster County, PA (laid next to three existing pipelines, in the same corridor). It would also require 22 miles of new offshore pipeline located in New York Bay. A new compressor station would be built in South Brunswick/Franklin border in Somerset County, NJ along with other upgrades, including an added compressor unit at a plant in Chester County, PA...

See:
Issues of Current Interest to the Raritan Valley Group | Sierra Club
Transco Pipeline Map - PA, NJ, NY

Transco Pipeline Map - Mercer, Somerset, Middlesex Counties

Updated Feb. 12, 2017