An above-ground pipeline leak in Dunn County caused about 1 barrel, or 42 gallons, of natural gas liquids to contaminate the Little Missouri River in Dunn County, the North Dakota Department of Health said Friday.
Oneok Partners reported that condensate, or a hydrocarbon mix containing natural gas liquids, sprayed from a gasket on Thursday about 20 miles northwest of Killdeer.
Bill Suess, the health department spill investigation program manager, said the spray of condensate did not initially impact the Little Missouri River, but the river rose.
Absorbent booms have been placed in an area about 300 feet by 400 feet to contain the spill, Suess said. The area affected is about 24 miles from the confluence with the Missouri River.
Health department staff have inspected the site and will monitor cleanup.