Exxon cleans up Arkansas oil spill amid debate over Canada-to-US pipelines
http://www.guardian.co.uk/environment/2013/mar/31/exxon-oil-spill-arkansas-pipeline
The EPA categorized the rupture as a "major spill", and 22 homes were evacuated following the incident. Photograph: Donna Williams/AP
Exxon Mobil was working to clean up thousands of barrels of oil in Mayflower, Arkansas, after a pipeline carrying heavy Canadian crude ruptured, a major spill likely to stoke debate over transporting Canada's oil to the United States.
Exxon shut the Pegasus pipeline, which can carry more than 90,000 barrels per day (bpd) of crude oil from Pakota, Illinois, to Nederland, Texas, after the leak was discovered on Friday afternoon, the company said in a statement.
Exxon, hit with a $1.7m fine by regulators last week over a 2011 spill in the Yellowstone River, said a few thousand barrels of oil had been observed.
A company spokesman confirmed the line was carrying Canadian Wabasca Heavy crude. That grade is a heavy bitumen crude diluted with lighter liquids to allow it to flow through pipelines, according to the Canadian Energy Pipeline Association (Cepa), which referred to Wabasca as "oil sands" in a report