The Biden administration has left the Energy Transfer LP’s controversial Dakota Access Pipeline in limbo, with the release of a new draft of an environmental study that stopped short of recommending whether it should receive an easement to continue operating.

The study by the US Army Corps of Engineers examined options that ranged from granting Energy Transfer’s request to increase the amount of oil allowed to flow under the existing easement, or allowing the pipeline to continue operating with new requirements to abandoning, or rerouting the pipeline. The agency said it would make a recommendation in a final version …