TransCanada, the operator of Keystone pipeline says the company has sent additional crews and equipment to the site of a 210,000-gallon oil spill in South Dakota.
Crews shut down the Keystone Thursday after discovering a leak.
TransCanada said Saturday it is making progress in its investigation into the cause of the spill on farmland near Amherst in Marshall County.
But the company did not elaborate on the cause. The company says additional equipment and workers continue to be dispatched to the site.
TransCanada says the leak is under control and there is no significant environmental impact or threat to the public.
The spill happened just days before Nebraska regulators were to announce their decision on whether they approve an expansion of the Keystone system. The commission is set to announce their decision Monday.
Nebraska officials said Friday that the oil spill won’t affect their decision to approve or deny a route for the related Keystone XL project.
A spokeswoman for the Nebraska Public Service Commission said that commissioners will base their decision solely on evidence presented during public hearings and from official public comments.
The Keystone pipeline delivers oil from Canada to refineries in Illinois and Oklahoma.