Keystone pipeline spills 210,000 gallons of oil on eve of permitting decision for TransCanada

The Keystone pipeline running from Canada across the Great Plains leaked Thursday morning, spilling about 5,000 barrels of oil — or 210,000 gallons — southeast of the small town of Amherst in northeast South Dakota.

The spill comes just days before a crucial decision next Monday by the Public Service Commission in Nebraska over whether to grant a permit for a new, long-delayed sister pipeline called Keystone XL, which has been mired in controversy for several years. Both are owned by Calgary-based TransCanada.