The US Federal Energy Regulatory Commission (FERC) is preparing an environmental assessment to discuss the environmental impacts of Port Arthur Pipeline LLC’s (Port Arthur) Louisiana Connector Amendment Project, involving construction and operation of facilities in Beauregard Parish, Louisiana, USA.
On October 16, 2017, Port Arthur submitted an application to construct, own, and operate the Louisiana Connector Project. The facilities will include approximately 131 miles (211 km) of 42-in. (1067-mm)-diameter pipeline; a new compressor station consisting of four 23,470 hp (17,509 kW) Solar Titan 130E compressors; eight new pipeline interconnections; a metering station; nine new mainline block valves; and new pig launcher/receiver facilities. The compressor station will be supplied with a backup power system consisting of two 568-kW diesel driven generators with a tank for storage of fuel for the backup generators.
On April 18, 2019, these facilities were authorized by FERC. Port Arthur submitted an amended application on December 9, 2019, to propose the relocation of the compression facilities to a new site which will allow for the interconnection of three new pipelines and the relocation of a previously permitted interconnection with a fourth pipeline. This would permit greater access to the Louisiana Connector Project from more sources of feed gas supply for its liquefaction project and its customers.
Specifically, Port Arthur proposed to relocate from Allen Parish, Louisiana, to Beauregard Parish, Louisiana, and call the new compression site Beauregard Parish Compressor Station (Beauregard CS). In addition, it proposed to relocate the site of one of the four approved pig launcher/receiver facilities; the site of the interconnection with Texas Eastern and associated metering and regulating (M&R) facilities to a location within the Beauregard CS; construct new interconnections, including associated M&R facilities, with three additional interstate pipelines — Cameron Interstate Pipeline, Transcontinental Gas Pipe Line, and LA Storage — increasing the total pipeline interconnections on the Louisiana Connector Project from eight to eleven; construct one new mainline block valve (MLV), resulting in a total of ten MLVs on the system.
Port Arthur is not proposing to modify the number, make, or model of compressors associated with Beauregard CS, and is only proposing to relocate the facility approximately 14 mi. (22.5 km) to the west. Facilities constructed at each interconnect will be the same as those proposed in the October 2017 application. The purpose of relocating the Beauregard CS is to provide the necessary throughput considering the modeled initial pressure of the gas being supplied by these four interconnects. Further, the siting of these facilities within a single compressor station boundary will reduce overall environmental impact and increase facility security and operational efficiency.
The amended facilities will be capable of peak transportation equal to 2,050,000 dekatherms per day, an increase of 70,000 dekatherms per day as compared to the facilities submitted and approved previously. The proposed relocation and construction of the Beauregard CS, including the four pipeline interconnections and associated facilities, will permit Port Arthur to respond to changes in market demand for transportation services on its pipeline, provide more delivery point options to its shippers, meet contractual obligations, and permit new natural gas transporters and suppliers to have access to the Louisiana Connector Project and the liquefaction project. This will facilitate the objective to provide feed gas from diversified sources of supply to the liquefaction project and ensure the ability of Port Arthur’s customers to obtain a long-term, price-competitive, and stable supply of domestically sourced feed gas.