The Federal Energy Regulatory Commission on July 29 issued a final environmental impact statement (EIS) for the Golden Pass LNG Export Project in Texas, proposed by Golden Pass Products LLC and Golden Pass Pipeline LLC.
Golden Pass requests authorization to expand and modify the existing Golden Pass LNG Import Terminal to allow the export of liquefied natural gas (LNG). The project would also include construction of approximately 2.6 miles of 24- inch pipeline, three new compressor stations, and interconnections for bi-directional transport of natural gas to and from the Golden Pass LNG Export terminal.
Said the final EIS: “The FERC staff concludes that approval of the proposed project, with the mitigation measures recommended in the final EIS, would result in some adverse environmental impact; however, those impacts would not be significant with implementation of Golden Pass’ proposed mitigation and the additional measures recommended in the final EIS.”
The final EIS addresses the potential environmental effects of the construction and operation of the following project facilities:
- Liquefaction facilities at the existing Golden Pass Export Terminal including three liquefaction trains, a truck unloading facility, refrigerant and condensate storage, safety and control systems, and associated infrastructure;
- a supply dock and alternate marine delivery facilities at the Terminal;
- 2.6 miles of a new 24-inch-diameter pipeline loop adjacent to the existing Golden Pass pipeline;
- three new compressor stations;
- five new pipeline interconnections and modifications at existing pipeline interconnections; and
- miscellaneous appurtenant facilities.
Golden Pass would construct the Terminal Expansion on a 919-acre site along State Highway 87 and the Sabine Neches Waterway, about 2 miles north of the community of Sabine Pass, Texas. The proposed site is south of, east of, and partially within the existing terminal fence line in Jefferson County, Texas. The Terminal Expansion would include the following facilities:
- feed gas pre-treatment facilities, including a mercury removal system, an amine system for removal of carbon dioxide and hydrogen sulfide followed by molecular sieve dehydration, and a heavy hydrocarbon (pentane and heavier [C5+]) removal system;
- three liquefaction trains (with associated power supply), each with a liquefaction capacity of 5.2 million metric tons per year (14,247 metric tons per day) of LNG for export;
- liquefaction facility utilities and associated systems;
- a truck loading/unloading area;
- refrigerant make-up and condensate product storage tanks; and
- a Supply Dock (referred to as a marine offloading facility (MOF)).
Golden Pass proposes to construct and operate about 2.6 miles of 24-inch-diameter pipeline between mileposts (MP) 63 and 66 of the existing Golden Pass Pipeline; three new compressor stations (MP 1 Compressor Station, MP 33 Compressor Station, and MP 66 Compressor Station); and associated facilities in Jefferson and Orange counties, Texas, and Calcasieu Parish, Louisiana. The pipeline would extend from an interconnection with a surface facility operated by Tennessee Gas Pipeline (TGP) near MP 63 of the existing Golden Pass Pipeline to a new compressor station near a surface facility operated by Texas Eastern Transmission Co. LP (TETCO) near MP 66.
Golden Pass would modify existing interconnections and metering facilities associated with other pipeline systems, including the Natural Gas Pipeline Co. of America (MP 1), Texoma Pipeline Co. (MP 33), TGP (MP 63), TETCO (MP 66), and Transcontinental Gas Pipe Line Co. LLC (MP 68.5) systems; and construct and operate associated facilities, including pig receivers and launchers and mainline valves.
Electrical power would be generated for the Terminal Expansion through use of high-pressure steam to drive new steam turbine generators in each of the three liquefaction trains. The heat recovery steam generators, which obtain heat from the exhaust flue gas from the gas-fired turbines of the liquefaction trains, would generate steam. Each steam turbine generator would have a power generation capacity of 100 MW.
The existing terminal is connected to the grid by a redundant system of 230-kV transmission lines. This system would be used to provide power for backup and startup activities. New 230-kV overhead redundant electrical lines and isolation breakers would be installed within the Terminal Expansion boundaries to route power from the incoming electrical transmission lines to the Terminal Expansion facilities.
In addition, seven backup, diesel-fired generators to power loads such as air compressors, uninterrupted power supply, gas and fire detection, emergency/egress and security lighting, fire pumps, communications, and stormwater pumps if total power outages occur when both grid power and normal generators are down or unavailable. A new 375,900-gallon diesel storage tank with secondary containment would be installed in the condensate tank and refrigerant storage area to supply the generators with fuel.