TransCanada has announced that its Keystone I tar sands pipeline has spilled 210,000 gallons of tar sands oil on farmlands in South Dakota. They also said the shut down does not affect the Marketlink pipeline system, which uses the facilities of the southern leg of the Keystone system from Cushing to the Gulf Coast.
The incident comes just days before a Nebraska public service commission is set to decide on a proposed route for the Keystone XL through the state.
The company said that crews shut down the pipeline Thursday morning after a drop in pressure was detected resulting from an oil leak that's under investigation. The leak was detected along a stretch of the pipeline about 35 miles south of a pumping station in Marshall County, South Dakota.
Crews, including TransCanada specialists from emergency management, engineering, environmental management and safety as well as contracted, nationally recognized experts are assessing the situation.
The Sierra Club is urging Nebraska regulators to reject the proposed Keystone XL oil pipeline after TransCanada Corp.'s existing Keystone pipeline leaked an estimated 210,000 gallons of oil in South Dakota.
A leak and spill in southeastern South Dakota in April 2016 prompted a weeklong shutdown of the pipeline. Moreover, in the years since TransCanada first proposed Keystone XL, a National Academy of Science study concluded that tar sands spills are much more damaging to the environment and hard to clean. The project has been delayed for several years and was revived this year through an executive order by President Trump.
"Ultimately, the cleanup responsibility lies with TransCanada, and they'll have to clean it up in compliance with our state regulations", Walsh said.
About 5,000 barrels of oil spilled Thursday.