Though its been nearly four years since the Kalamazoo oil spill, an advocacy group in the northern Lower Peninsula says concerns remain.

The Enbridge oil spill in lower Michigan in 2010 was among the costliest onshore incidents of its kind in U.S. history. 

A state task force is studying the Enbridge pipeline running through the Straits of Mackinac. Jennifer McKay, policy specialist for advocacy group Tip of the Mitt Watershed Council in Northern Michigan, says its been tough to get her concerns vetted.

"We need to start evaluating what the risks are and how we can hopefully prevent an incident like what happened [near Kalamazoo] from happening in northern Michigan," she told WOOD Radio News.

Michigan Department of Environmental Quality and Michigan Attorney General created the task force in June. It said it would ask Enbridge about safety concerns from its 60-year-old pipeline through the Straits of Mackinac.

McKay said her group has asked for its own set of data, but said a formal Freedom of Information Act request might be needed to get access to information related to the pipeline's safety.