The staff of the Federal Energy Regulatory Commission will prepare an environmental impact statement (EIS) on the Alaska LNG Project, which involves construction and operation of facilities by Alaska Gasline Development Corp., BP Alaska LNG LLC, Conoco Phillips Alaska LNG Co., ExxonMobil Alaska LNG LLC and TransCanada Alaska Midstream LP.
The commission said in a March 4 notice that it will use this EIS in its decisionmaking process to determine whether the project is in the public convenience and necessity. The scoping period where the commission will take input on what should be covered in the EIS will remain open for an extended period, closing on Dec. 4.
The applicants plan to develop, construct, and operate facilities that would commercialize the natural gas resources on Alaska’s North Slope. The Alaska LNG Project would consist of the following major facilities:
- three parallel treatment systems (trains) with a capacity up to 4.3 billion cubic feet per day;
- a 1-mile-long, large diameter aboveground pipeline to transport gas from the existing central gas facility to the gas treatment plant (GTP);
- a 60-mile-long 30-inch-diameter pipeline to transport gas from the Point Thomson Unit to the GTP;
- Prudhoe Bay Unit improvements to the West Dock loading and unloading facilities; and
- water reservoir, pump facilities, and a transfer line to provide water to the GTP.
- about 800 miles of 42-inch-diameter pipeline from the planned GTP to the planned liquefied natural gas (LNG) plant in Nikiski Alaska; and
- eight natural gas driven compressor stations, four custody transfer meter stations, multiple pig launching/receiving stations, heater stations, cathodic protection facilities; and mainline block valves.
LNG Liquefaction Facilities
- marine terminal facilities;
- three liquefaction trains capable of liquefying 20 million tons per year of LNG; and
- three 160,000 cubic meter storage tanks.
The planned Alaska LNG Project would start at the GTP and generally follow the existing Trans-Alaska Pipeline System crude oil pipeline (TAPS) and adjacent highways south to Livengood, Alaska. From Livengood, the mainline would diverge from TAPS and generally head south-southwest to Trapper Creek following the Parks Highway and Beluga Highway. Then the project line turns south-southeast around Viapan Lake. Finally, it crosses the Cook Inlet in the vicinity of Shorty Creek to Boulder Point on the Kenai Peninsula.
The applicants anticipate starting construction in 2018 or early 2019, with construction and startup taking approximately seven years. On this basis, the planned project system would be placed into service about 2025-2026.