nuclear-news

A small northern Ontario town refused radioactive waste. It’s gone to Sarnia instead

Decades-old mine tailings in Nipissing First Nation sparked outrage after the province tried to move the material to another community without consultation, but it has quietly moved them again

the Narwhal By Leah Borts-Kuperman (Local Journalism Initiative Reporter), May 6, 2026

Summary

• The Ontario government intended to move radioactive waste from the shore of Lake Nipissing to a former mine site outside Sudbury, Ont.
• A lack of consultation around the new location led to strong local opposition, and delayed the remediation project conducted by Nipissing First Nation.
• The waste has now been moved to a disposal site outside Sarnia, Ont., and Aamjiwnaang First Nation, where emissions from the industrial area known as Chemical Valley have affected local air quality.

For decades, radioactive waste sat near the shore of Lake Nipissing. It looked like an innocuous pile of gravel in what was otherwise a stretch of forest. People began using it to backfill lots, fill spaces under decks and build fire pits. In the 1970s and ’80s, Nipissing First Nation began using it to build roads. 

It wasn’t normal gravel, though. It was mine tailings, containing the metal niobium, left there when the Nova Beaucage mine shuttered in 1956 after just seven months of operation. 

“The company just walked away and left it with no remediation at all,” Geneviève Couchie, business operations manager at Nipissing First Nation, said. Couchie led a project to clean up the tailings, which first started in 2019. After being interrupted by COVID-19 shutdowns, the remediation resumed in spring 2024 and lasted almost two years.

In the meantime, Couchie told The Narwhal, she fielded concerns about groundwater and lake contamination from residents living close to the site or to a nearby property owned by Ontario’s Ministry of Transportation that also stored the low-level radioactive tailings. Couchie said she struggled to get satisfactory answers from government agencies.

“The workers wore hazmat suits, and I remember saying from the beginning, ‘How can I tell people they have nothing to worry about when these guys are in full on suits?’ They’re literally 20 feet from someone’s window,” Couchie said. The majority of the workers remediating the site were from the nation, and dressed in protective gear so as not to carry radioactive dust home on their clothes. 

The plan was to load the waste into trucks to be transported to a tailings management area at Agnew Lake, in Sudbury District. It is the decommissioned site of a former mine, near the Township of Nairn and Hyman, and about 150 kilometres from Nipissing First Nation. The nation first had to excavate nearly 50,000 metric tonnes of the radioactive material — enough to build the Statue of Liberty, twice.

But the project faced another unexpected delay. The province had attempted to relocate the waste without consulting the Nairn community, sparking public outcry. Locals organized public meetings to raise awareness and ultimately stop the transfer. 

Eventually, in July 2025 — after nearly a year of advocacy in Nairn, and delay for Nipissing First Nation — the province capitulated, finding another place for the waste to go. This was welcome news for Nipissing First Nation, which is now hoping to transform the scarred land into a lakeside green space for the community to enjoy after years of worry.

“We just wanted to see this material moved off [Nipissing First Nation] lands, and so it was an unexpected disappointment that things were delayed like they were,” Couchie said. “We were pleased that they did end up finding another disposal site.”

“But,” Couchie said, it was “eye opening as well, that there was only one other facility in Ontario that was prepared to accept this.”

That facility is close to another Indigenous community — Aamjiwnaang First Nation, in the Sarnia region, where emissions from refineries and petrochemical plants have earned the area the moniker “Chemical Valley.” 

Sarnia facility accepting radioactive waste from Nipissing

The new destination for the radioactive tailings is Clean Harbors, a hazardous waste facility in Corunna, Ont. — 645 kilometres from its original dumping ground. It’s close to both Aamjiwnaang and Sarnia, which have experienced persistent air quality issues related to nearby industry.

Clean Harbors is the only government-licensed hazardous waste management complex in Ontario, and is “uniquely positioned,” its website reads, to offer safe disposal of naturally occurring radioactive material like the niobium tailings. 

But the facility’s history is dotted with dust-ups over environmental safety. In 2013, neighbours of the Clean Harbors site won a civil lawsuit over the impact of the waste facility’s emissions on their health and daily lives.

In 2019 the company was fined $100,000 for discharging contaminated smoke after a filter cloth soaked with coolant, oils and metal particles caught fire.

When the province conducted a study on environmental stressors in the Sarnia area in 2023, it found that while the majority of the 870 reports from residents about industrial pollution were related to petrochemical industries and refineries, a significant minority — 219 — were “related to the waste incineration facility in the area (Clean Harbors).”

And in 2025, the Ministry of Environment fined Clean Harbors $100,000 for failing to comply with an equipment requirement for monitoring the excavation of a waste-holding basin. 

Clean Harbors did not respond to The Narwhal’s questions about these claims and findings.

In a section of their 2025 annual report on legal, environmental and regulatory compliance risks, Clean Harbors asserted: “We are now, and may in the future be, a defendant in lawsuits brought by parties alleging environmental damage, personal injury and/or property damage, which may result in our payment of significant amounts.”

Aamjiwnaang First Nation Chief Janelle Nahmabin told The Narwhal she had not received any information about the niobium waste that was trucked to Clean Harbors nearly a year ago. Other environmental groups The Narwhal reached out to, including Climate Action Sarnia-Lambton, had not heard of this waste transfer, either.

“The plan now has been executed in a very different way,” said Brennain Lloyd, project coordinator at Northwatch, a northeastern Ontario environmental advocacy group. “It’s moving the waste into the territory of another First Nation that is already heavily impacted by all of the industrial activities.”

‘Under a real nuclear shadow’: radioactive waste in northern Ontario

…………………………………………………………………………………………………………………………………………. https://thenarwhal.ca/northern-ontario-radioactive-waste-sarnia/

May 10, 2026 - Posted by Christina Macpherson | Canada, wastes