(Reuters) – The filtration of the Keystone oil pipeline in rural South Dakota in November was almost double the original estimate, making it one of the largest spills in the United States since 2010, it said on Saturday. newspaper.
Robynn Tysver, a spokeswoman for TransCanada Corp, based in Calgary, which owns the pipeline, told the Aberdeen American News that 9,700 barrels of oil had been leaked. in the spill on November 16, the South Dakota newspaper reported. The original estimate was 5,000 barrels.
The spill gave more ammunition to environmental groups and other US opponents. UU From another pipeline proposed by the company, Keystone XL, long delayed.
TransCanada had closed the 590,000-barrel-a-day oil pipeline, one of Canada's main oil export routes connecting the Alberta oilfields with US refineries, immediately after the spill. Operations restarted less than two weeks later.
TransCanada officials were not immediately available for comment.
TransCanada spokeswoman told the newspaper that repairs were made to the pipeline and a cleanup was carried out.
"We have replaced the last of the topsoil and we have planted the affected area," Tysver said in an email sent to American News on Friday night, the newspaper said.
Keystone has leaked substantially more oil, and more often, into the United States than the company indicated to regulators in risk badessments before operations began in 2010, according to documents reviewed by Reuters.
Report by Jon Herskovitz in Austin, Texas, edited by G Crosse
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