CALGARY, Alberta, Aug 16 (Reuters) - Imperial Oil IMO.TO said on Tuesday its Sarnia, Ontario refinery is not the source of an oily sheen noticed on the St. Clair River and there are no operational issues at the facility.
Imperial spokeswoman Lisa Schmidt said the sheen on the river was spotted flowing alongside Imperial's operations at 8:30 a.m. Eastern time (1230 GMT) and the company reported it to local authorities. The source of the sheen is still unknown.