UPDATE: Shell Dealing With Hydrocarbon ReleaseSeptember 7, 2017 12:35pm
Shell says work has been completed to remove what it calls a small volume of hydrocarbon from the St. Clair River near its manufacturing centre at Corunna.
Spokesperson Kristina Zimmer says company personnel continue efforts to clean-up a sheen in Talfourd Creek near the refinery.
She says the source of the sheen was isolated shortly after it was discovered around 8am Thursday.
A temporary boom was deployed at the creek and vacuum trucks were also being used.
The environment ministry was on site, a Chemical Valley Emergency Coordinating Organziation (CVECO) alert was issued, and neighbours downriver were notified.
Zimmer says the cause of the incident is under investigation.