WILLISTON, N.D. (AP) -- A North Dakota health official says a Colorado company likely will be sanctioned for not heeding a warning to secure an oil well that was swamped by floodwaters near the confluence of the Yellowstone and Missouri rivers.
Environmental geologist Kris Roberts says up to 1,400 gallons of oil might have spilled from Zavanna's well site into floodwaters in the area southwest of Williston.
Roberts says the spill was discovered on Friday and has been contained. He says no other wells in the area have leaked oil into floodwaters.
Officials say several companies were warned days in advance to secure their wells because of the threat of flooding from ice jams.