There was a liquid release from Imperial's Sarnia manufacturing site Friday night.
In a statement issued at 9:30 p.m. the company said a small leak was detected on a butylene sphere.
The Imperial emergency response team responded and the city fire department was briefly on standby.
"The priority at this time is stopping the leak," Imperial Public & Government Affairs Manager Kristina Zimmer said in the statement. "Air monitoring is being conducted but no levels have been detected around the site's perimeter."
BlackburnNews.com will provide more information as it becomes available.
