"Pipelines threaten human rights, put our climate at risk, and pose already realized risks to drinking water and the environment," she added.
The worst oil pipeline rupture in U.S. history occurred in 2016 after 1.2 million gallons (4.5 million liters) gushed into Michigan's Kalamazoo River, resulting in penalties of 61 million U.S. dollars to Canada's Enbridge Energy Partners.
Calgary-based TransCanada is the biggest supplier of gas and oil pipelines in North America with oil pipes totaling 3,460 kilometers and gas lines stretching almost 70,000 kilometers across the continent.
"We've always said it's not a question of whether a pipeline will spill, but when, and today TransCanada is making our case for us," Sierra Club's Kelly Martin said in a statement Friday.
TransCanada, founded in 1951 with annual revenues of 10 billion U.S. dollars, said Thursday the leak was the first detected on the pipeline since operation began in 2010.
That claim was refuted immediately by Sierra Club which reposted a 2011 article on its website Friday.
"The pipeline had a dozen spills in its first year of operation alone," Sierra spokesperson Gabby Brown noted.
The TransCanada Keystone Pipeline System was commissioned in 2010 and delivers 1.4 million barrels a day through 3-foot pipes from the Western Canadian Sedimentary Basin in Alberta to refineries in Illinois and Texas.
The tar sands Canadian crude oil is considered by industry experts to have high pollutant content and is especially damaging to the environment.
【国际英语资讯:U.S. environmental groups react loudly to South Dakota oil spill】相关文章:
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