Nov. 16 (UPI) -- Crews shut down part of the Keystone pipeline after a leak spilled more than 200,000 gallons of oil in South Dakota, TransCanada said on Thursday.
TransCanada, which owns the pipeline, said it was shut down at 6 a.m. after its operating system detected a drop in pressure resulting from an oil leak.
"The section of pipe along a right-of-way approximately 35 miles south of the Ludden pump station in Marshall County, South Dakota, was completely isolated within 15 minutes and emergency response procedures were activated," the company said.
Brian Walsh with the Department of Environment and Natural Resources told KSFY that 210,000 gallons of oil leaked.
"Crews, including TransCanada specialists from emergency management, engineering, environmental management and safety as well as contracted, nationally recognized experts are assessing the situation," TransCanada said.
TransCanada secured permit from the U.S. government this year to advance its cross-border Keystone XL project to the U.S. Gulf Coast and said it had about 500,000 barrels of oil per day committed to the pipeline.