By Andrew Nikiforuk
|Oil sands processing on Alberta's Athabasca River|
The study, published in the prestigious Proceedings of the National Academy of Sciences (PNAS), also found that the levels of heavy metals detected from snow runoff or downstream of industrial development exceeded Canadian and Alberta guidelines for protecting fish and aquatic life for seven out of 13 pollutants studied. In some cases metal contamination exceeded guidelines by 30-fold.
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