On the grounds that authorities issuing permits, including the Army Corps of Engineers, did not sufficiently take into account the potential impact of a spill, including all the various ways leaks occur, challenges to detecting and correcting leaks, and the poor track record of the parent company in addressing failing pipeline infrastructure in the past. The courts have ordered a full Environmental Impact Statement (EIS) on the pipeline now, and is requesting both sides submit a briefing on the potential precautionary measure of shutting down the pipeline for the duration of the time it takes to prepare and assess the EIS.
Of this victory in a hard-fought, long campaign, the Standing Rock Sioux Tribe Chairman Mike Faith says, "Perhaps in the wake of this court ruling the federal government will begin to catch on, too, starting by actually listening to us when we voice our concerns.”
The full story is well worth a read here.