Texas environmental regulators may decide to require more stringent emissions controls for a second phase of Sempra Infrastructure’s proposed Port Arthur liquefied natural gas (LNG) terminal in Southeast Texas after an administrative ruling.

Judges with Texas’ State Office of Administrative Hearings released a decision May 20 on a challenge brought by local group Port Arthur Community Action Network (PACAN) to the expansion project (SOAH Docket No. 582-22-0201). Administrative Law Judges Meitra Farhadi and Heather Hunziker sided with the group in their decision that Sempra hadn’t demonstrated whether their designs for the second phase of Port Arthur LNG  “constitute best available control technology” required by law.

In their ruling, the judges wrote they recommend the...