The Canadian Press
EDMONTON–The Canadian government says it lacked the scientific evidence to determine if oilsands tailings ponds were leaking into waterways and hurting fish.
But the government adds it continues to work on methods to determine if chemicals associated with bitumen in groundwater are natural, or the result of industry.
The government has provided a response to a call from the environmental arm of NAFTA to explain what Canada is doing to stop oilsands tailings ponds from leaking into Alberta waterways.
The document was submitted to the Commission for Environmental Co-operation on Friday night.
It says the federal government conducted “proactive enforcement activities” at various tailings ponds between 2009 and 2014.
But it states it’s difficult to know the difference between naturally-caused and human-caused sources of bitumen, and investigators lacked reasonable grounds to think there were violations.
The federal government said as a result, it redirected resources away from the inspections and focused on enforcement in other areas.
The government noted it’s still working to develop scientific tools for future investigations and that significant advancements have been made since 2014.
Environment minister Catherine McKenna said in a release that her department is working with all of the concerned parties to ensure “we use the best available science and technology in environmental monitoring of oilsands development.”
The commission requested the response in August following allegations by Canada’s Environmental Defence group and the Natural Resources Defense Council based in the United States.
The groups argued Canada was failing to enforce the Fisheries Act by allowing contaminants from the ponds to leak into water without forcing the companies involved to fix the problem.
NAFTA’s environment annex allows non-governmental organizations and citizens of the three countries to submit complaints if they feel environmental laws and regulations are not being enforced.