CBC News : July 16, 2015

One of the largest leaks in Alberta history has spilled about five million litres of emulsion from a Nexen Energy pipeline at the company’s Long Lake oilsands facility south of Fort McMurray.

The leak was discovered Wednesday afternoon.

Nexen said in a statement its emergency response plan has been activated and personnel were onsite. The leak has been stabilized, the company said.

The spill covered an area of about 16,000 square metres, mostly within the pipeline corridor, the company said. Emulsion is a mixture of bitumen, water and sand.

The pipeline that leaked is called a “feeder” and runs from a wellhead to the processing plant.

(read the full article at CBC)