BISMARCK, N.D. (AP) – The Dakota Access pipeline system leaked more than 100 gallons of oil in North Dakota in two separate incidents in March – the second and third known leaks discovered as crews prepared the disputed $3.8 billion pipeline for operation.
Two barrels, or 84 gallons (320 liters), spilled due to a leaky flange at a pipeline terminal in Watford City on March 3, according to the state’s Health Department. A flange is the section connecting two sections of pipeline. Oil flow was immediately cut off and the spill was contained on site. Contaminated snow and soil was removed. No people, wildlife or waterways were affected, according to the department’s environmental health database.
A leak of half a barrel, or 20 gallons (75 liters), occurred March 5 in rural Mercer County, data from the federal Pipeline and Hazardous Materials Safety Administration show. Contaminated soil was removed, and no waterways were affected. There were no reported injuries to people or wildlife. The administration is part of the Department of Transportation.
The online report says an above-ground valve failed due to a manufacturing defect, causing the leak. Upstream and downstream valves were closed to isolate the leak. Later, all other such valves on the line were inspected and found to be OK.
The federal database shows no leaks along the pipeline in Iowa or Illinois.