TORONTO – The Toronto Transit Commission confirms test results of a substance found leaking inside the College Station tunnel on Tuesday is not gasoline or diesel fuel and is believed to be some form of oil.
TTC head of communication Brad Ross tweeted on Wednesday the substance is likely transformer oil, hydraulic fluid or lubricating oil. He also said more testing is needed to determine the exact makeup of the liquid.
Subway service was suspended for up to six hours Tuesday between Bloor and Union station after the substance was discovered seeping onto the tracks just before midnight.
The TTC put into service 70 shuttle buses to ease the morning rush hour congestion and move riders along Yonge Street.
The TTC said the liquid travelled through the soil and likely “picked up any number of contaminants.”
“There were no reports of spills within one kilometre of the station in the previous two days,” Ross tweeted.
The TTC said they are continuing to monitor the leak and pinpoint the source of the substance with help from city officials and the Ontario Ministry of Environment.
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