TransCanada’s Keystone I pipeline is approximately 2,100 miles long. It carries ultra-heavy crude oil from the Alberta, Canada tar sands to refineries in Woods River and Patoka, Illinois.
Keystone I crosses several South Dakota counties (Marshall, Day, Clark, Beadle, Kingsbury, Miner, Hanson, McCook, Hutchinson and Yankton) and includes four pumping stations in South Dakota. The South Dakota Public Utilities Commission approved the pipeline in April 2008 and it went operational in June 2010.
There have been serious problems during construction of the Keystone I pipeline, including damaged roads in North Dakota and South Dakota, as well as large sinkholes at North Dakota’s scenic Pembina Gorge.