A crude oil leak from an overhead line was reported at Suncor’s refinery in Sarnia on Tuesday, the Ontario Ministry of Environment, Conservation and Parks said.
The oil was contained at the refinery site and went to Suncor’s wastewater treatment plant, ministry spokesman Gary Wheeler said in an email.
He said Suncor monitored the area for odors and volatile organic compounds and found no offsite impact. “The company has also monitored its wastewater effluent and there are no high readings,” he added.
Ministry staff have inspected the area, gathered information from the company, and will monitor the air quality, he said.
Wheeler also said the ministry was told by the company shortly before 11 a.m. Tuesday that it was shutting down a processing unit at the Sarnia site and that there was a risk of flaring.
Suncor described the incident as a “small crude leak” in a recorded message on an industry update hotline operated by Community Awareness Emergency Response, an industry joint emergency response organization. and the municipality.
“The leak is contained and we continue to divert material from our wastewater treatment system to an on-site storage tank,” the company said.
“All other refining operations are stable and we continue to monitor air quality to make sure there are no odors.”
Suncor’s Sarnia refinery produces gasoline, kerosene, jet and diesel fuels, asphalt and petrochemical feedstocks, according to the company’s website.