With federal environmental review of the Atlantic Sunrise Project finished, Williams’ Transcontinental Gas Pipe Line Co. (Transco) is asking FERC to not keep Marcellus Shale gas bottled up any longer than necessary and approve the project by Feb. 16 so other development commitments can be met.

“Transco is urging the Commission to issue a certificate for the project by that date because the company is obligated to begin preparations to finalize federal and state permits as well as plan for construction to comply with restrictive environmental windows, specifically tree clearing within key habitat areas and installation through certain water bodies,” Transco told the Federal Energy Regulatory Commission in a Jan. 5 letter [CP15-138].

The deadlines are with the U.S. Fish and Wildlife Service and the Pennsylvania Department of Environmental Protection.

“Given the many complexities and sequencing of activities that go into the project’s construction timeline, including environmental restrictive windows, a delay in a decision beyond Feb. 16, 2017 could jeopardize Transco’s ability to place these facilities into service on a timely basis,” the pipeline said.

Project capacity is 100% committed, Transco told FERC, and shippers are teed-up for previously revised in-service dates. “The customers are counting on this capacity for a variety of uses, including heating and cooling, manufacturing and power generation,” Transco said.

Atlantic Sunrise received its final environmental impact statement at the end of last year.

The roughly $3 billion Atlantic Sunrise would open a path for constrained Marcellus Shale gas to reach markets in the Southeast through the Transcontinental Gas Pipe Line Co. LLC (Transco) system running along the Atlantic seaboard.

The expansion would include about 197.7 miles of pipeline composed of about 184 miles of new 30- and 42-inch diameter pipeline for the greenfield CPL North and CPL South segments in Pennsylvania; about 12 miles of new 36- and 42-inch diameter pipeline looping known as Chapman and Unity Loops in Pennsylvania; about three miles of 30-inch diameter replacements in Virginia; and associated compressor stations, equipment and facilities.