Environmental groups are continuing to pressure LNG export facility and pipeline developers through federal appeals courts as lawsuits seeking to repeal authorizations stack up.

In the latest of a series of filings to the U.S. Court of Appeals for the District of Columbia Circuit, Healthy Gulf and the Sierra Club requested FERC’s approval of two pipelines to feed the Driftwood liquefied natural gas project in Louisiana be vacated (No. 23-01226).

In the brief filed Tuesday, lawyers for the groups accused the Federal Energy Regulatory Commission of violating federal law by refusing to consider the impact or amount of greenhouse gas emissions from construction of Tellurian Inc.’s Driftwood Line 200 and Line 300 pipeline projects.

[What’s Coming? NGI’s North American LNG...