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'It's very concerning,' councillor saysĬoun. Mike Colle, who represents Ward 8, Eglinton–Lawrence, said this is the first time - as far as he knows - that there's been a spill of a chemical oil into the Don River. She said Hydro One has been working with the city of Toronto as well as the ministry of environment, conservation and parks to resolve the issue. A transformer at the station failed early Friday, resulting in insulating mineral oil being released into the Don River. "We take this responsibility very seriously and our goal when responding to spills is to prevent or mitigate any potential impacts to the environment."Ī worker is visible at the Bathurst Transmission Station in North York. They will be carrying out an additional assessment and any remediation work that is necessary in the coming weeks and months, she said. Spill site is 'active scene,' Hydro One saysĬlark said the site of the spill is still an "active scene." An investigation is underway to determine how much mineral oil has been released, how much is in the containment pits and how much has been recovered so far. Vacuum truck and absorbent booms are being currently being used to recover as much oil as possible, she said. "On site we do have containment units in the event that mineral oil does leak from any of our equipment, but due to the additional volume from the rain and the snow that we've received over the last few days, it resulted in those units overflowing." The mineral oil is an insulating oil that is widely used for the safe operation of electricity systems, she said. "We immediately dispatched our environmental emergency response teams and cleanup efforts are underway," Clark told CBC Toronto. Nancy Clark, a spokesperson for Hydro One, said one of the company's transformers at the Bathurst Transmission Station in North York failed early Friday, resulting in insulating mineral oil being released. Cleanup crews from Hydro One are continuing their work at the Don River on Saturday after an oil spill from one of its transmission sites leaked into the river a day earlier.