on April 10began a controlled restart of the Keystone oil pipeline, a little more than aweek after a leak wasdiscovered in South Dakota.
Followingrestart approval by the U.S. Pipeline and Hazardous Materials SafetyAdministration, Keystone is operating at a reduced pressure, TransCanada saidin an emailed statement.
TransCanadasaid aerial patrols and visual inspections continue at the leak site in Hutchinson County.
TransCanadainitially estimated the spill at about 4.5 barrels but on April 8 its estimate to 400barrels of tar sands crude. The company said in its April 10 statement thatthere has not been a significant environmental impact from the spill and thereis no public safety concern going forward.
"Ourgoal over the 40,000 miles of pipeline we have operated for the past 65 yearsis zero incidents," TransCanada said. "We will apply what welearn from this incident to move us closer to that goal."
TheKeystone pipeline is capable of carrying 590,000 barrels of crude per day fromthe Canadian tar sands to refineries and storage facilities in the U.S.