Evacuation of nearby businesses was lifted after a few hours.
The leak comes as the Nebraska Public Service Commission is set to vote on the Keystone XL sequel.
Company says leak, discovered April 2., didn’t cause any significant environmental damage or threaten public safety.
A landowner – not TransCanada’s spill detection system – noticed the spill Apr. 2.
TransCanada to renew its pitch for the oil pipeline a second time in five years.