FERC plans enviro review on expanded version of Mississippi River LNG Project

Due to project changes made in recent months, the Federal Energy Regulatory Commission on Sept. 30 issued an amended notice on its plans to write an environmental impact statement on the Mississippi River LNG Project.

In October 2014, FERC issued its first notice of plans for this EIS. Since that notice was issued, Louisiana LNG Energy LLC has made project changes. This supplemental notice is being issued to seek comments on the project changes and opens a new scoping period for interested parties to file comments on environmental issues. This EIS will be used in part by the commission to determine whether the Mississippi River LNG Project is in the public convenience and necessity. Comments on the notice are being taken until Oct. 30.

Louisiana LNG is planning the following changes in response to new ownership and additional environmental and engineering analysis:

  • increase the liquefied natural gas production capacity to 6.0 million tons per annum (MTPA) from 2.0 MTPA;
  • increase the storage capacity of the LNG storage tanks to 140,000 cubic meters (net) from 100,000 cubic meters;
  • increase the pipeline from the 1.9-mile 24-inch-diameter to 1.9-mile 36-inch-diameter (northern pipeline) with an associated meter station that would deliver gas from the Tennessee Gas interstate pipeline system;
  • increase the pipeline from the 1.6-mile 12-inch-diameter to 3.5-mile 36- inch-diameter (southern pipeline) that would deliver gas from the Tennessee Gas Pipeline system to the facility;
  • eliminate the truck loading facility from the project design; and
  • eliminate the compressor station from the project design.

The planned construction would impact a 190-acre site on the east bank of the Mississippi River in Plaquemines Parish, Louisiana, which would include the liquefaction trains, LNG storage tanks, marine loading facilities, the electrical power station, and ancillary facilities. The full 190-acre site would be fenced and retained for operations of the planned project. Construction of the two pipelines and associated meter stations would require approximately 65 acres of land, 33 of which would be permanently impacted during operations. Louisiana LNG is still in the planning phase for the project and requirements for construction workspaces, access roads, and pipe storage/contractor yards would be determined during engineering and design.

In a July 28 resource report filed with FERC, Louisiana LNG Energy (LLNG) said the proposed supply pipelines will provide LLNG access to approximately 1.8 billion standard cubic feet per day (Bcf/d) of firm transportation capacity to the facility to supply feed gas for liquefaction and export. The proposed interconnections will enable LLNG to source feed gas from a variety of natural gas production areas in the U.S., including the Marcellus and Utica shale regions.

Up to 56 MW of on-site power generation will be provided by four gas turbine packages that will be installed to provide the necessary power requirement for the facility to operate continuously.

LLNG is seeking FERC approval/authorization to site, construct and operate its project no later than the fourth quarter of 2016. Based on permitting timelines and construction schedules utilizing a modular design, the estimated project construction duration is approximately 52 months. LLNG said in the July 28 resource report that it anticipates that the four liquefaction units will be in operation by the second quarter of 2021.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.