Oil pipeline company Enbridge Inc. and emergency agencies will test their readiness to deal with potential spills in the Bay City, Mich. area.

The exercise Wednesday will focus on a simulated failure of an Enbridge oil pipeline that crosses the Saginaw River.

Officials say the only equipment or personnel actually deployed to the scene will be boom material, which helps contain spilled oil. Enbridge and the Coast Guard were placing boom in the river before the event.

Participating agencies will include local fire and police departments, Bay County’s emergency management agency, the Michigan Department of Environmental Quality, the U.S. Environmental Protection Agency and the Coast Guard.

A rupture in an Enbridge pipeline in 2010 spilled more than 800,000 gallons of oil into the Kalamazoo River.