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Mysterious odour in Unity contained waste not approved to be disposed at facility

The Saskatchewan Ministry of Energy and Resources confirms the likely source of the mysterious odour experienced in Unity, Sask., in January.
The Saskatchewan Ministry of Energy and Resources confirms the likely source of the mysterious odour experienced in Unity, Sask., in January. Dayne Winter / Global News

More than six months later, the Saskatchewan Ministry of Energy and Resources has come out with its findings following a mysterious odour townspeople in Unity claimed made them sick.

At the time of the incident, residents said the overwhelming smell wafted in from outside.

“It gave me a migraine and nausea and burning eyes and throat,” one local wrote on the community’s Facebook page.

Air samples collected on Jan. 2 and 3 revealed a mixture of gaseous petroleum hydrocarbons and sulfur-based compounds. According to the ministry, these concentrations could have resulted in the short-term effects reported; however, no serious or long-term health effects are expected.

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WATCH: People of Unity, Sask. sickened by mysterious leak

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People of Unity, Sask. sickened by mysterious leak

The ministry completed an investigation and said Thursday the source was likely a gaseous component in the liquid waste stream that was received by Tervita’s waste processing facility nearby.

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The investigation determined the shipment delivered on Jan. 2 contained caustic waste that was not approved for disposal at the facility. Information indicates it was classified a “Transportation of Dangerous Goods Class 8 corrosive liquid.”

The ministry has instructed Tervita to cease accepting these substances at the facility.

As a result of the investigation, Tervita must also conduct a third-party engineering assessment of its waste processing and disposal system and make sure sampling procedures meet operating standards.

The company is not facing any fines and has 90 days to comply with these orders.

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In addition, the ministry will amend Tervita’s facility licence to more clearly state the substances that can be received and establish site-specific incident reporting requirements.

The last requirement aims to ensure the facility operator immediately notifies the ministry of any release of gas that activates the facility’s emergency shut down procedures.

An estimated 2,500 people live in Unity, approximately 175 kilometres west of Saskatoon.

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