First, South Dakota was devastated in November 2017 when TransCanada’s Keystone pipeline spilled 210,000 gallons of oil in a field. Then on October 29, part of the Keystone 1 Pipeline in Edinburg, North Dakota, leaked more than 383,000 gallons of oil in a wetland area, the Washington Post reports. In a statement yesterday (October 31), pipeline owner TC Energy claimed that area impacted by the leak is “approximately half the size of an Olympic-sized swimming pool.”

This large amount is just the initial estimation, according to TC Energy’s October 31 update which said, “We will not have the exact figure until oil recovery has been completed.” The company also does not know how the leak started, the Division of Water Quality wrote in a statement

Oil pipelines have been an issue for years now, especially among Indigenous communities, Joye Braun, Indigenous Environmental Network frontline community organizer, told CNN in an article published October 31. “This is exactly the kind of spill we are worried about when it comes to Keystone XL being built. It has never been if a pipeline breaks but rather when.” The Network tweeted that they will continue to firmly oppose these “dangerous” pipelines.