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But it warned that Alberta and other parts of Western Canada are facing a steep economic and ecological price tag for failing to crack down on the industry’s collateral damage.

“Contamination of the Athabasca River is a high-profile concern,” said the presentation, marked secret, but released to Postmedia News through access to information legislation.

“Recent studies suggest elevated levels of pollutants near mining sites including hydrocarbons and heavy metals … (It) raises questions about possible effects on health of wildlife and downstream communities.”

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The presentation was produced in May as a governmentwide oil sands task force continued to develop a new science-based monitoring program to get specifics on the impacts of oil extraction from the bitumen deposits in Western Canada that are also known as tarsands because of their tar-like appearance and odour. The deposits are considered to hold one of the largest reserves of oil in the world, but existing technology forces producers to use large quantities of water and energy, while disrupting natural ecosystems to extract the fuel from the ground.

“Bitumen extraction uses between one (in situ) and three to four (mining) barrels of fresh (i.e. Not recycled) water per barrel of oil recovered,” said the document. “Industry demand for water is expected to increase.”

A related Environment Canada document, also produced in May and released earlier this month to Postmedia News, warned the government that the industry’s economic future was in jeopardy because of a lack of “credible scientific information” required to counter campaigns and foreign regulations or legislation that crack down on products and industries with poor environmental performance.