In Sierra Club v. United States Dep’t of Transportation[1],a panel of the United States Court of Appeals for the District of Columbia Circuit (“D.C. Circuit”) vacated and remanded a final rule[2] issued by the Department of Transportation (“DOT”) permitting the transportation of liquefied natural gas (“LNG”) in approved rail cars. The final rule was subsequently stayed and never took effect.
DOT Rulemaking & the Sierra Club Decision
The rulemaking proceeding began with an executive order published on April 10, 2019. Then President Trump directed the Secretary of Transportation to propose a rule to permit LNG to be transported in approved rail cars within 100 days from the date of the executive order and to finalize the rule within thirteen months.[3] DOT subsequently issued a proposed rule that would permit the transportation of LNG by rail in DOT-113 rail cars. The proposed rule proposed no limit on the number of cars to be used to transport LNG on a single train and imposed no mandatory speed limit. The proposed rule also included a preliminary environmental assessment finding that the proposed rule would have no significant environmental impact.[4]
The proposed rule was challenged by environmental organizations, states, and the National Transportation Safety Board, all citing potentially grave risks related to potential explosions or fires related to transportation of LNG by rail and separately arguing that the proposed rule failed to mitigate those risks.[5]
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