Jump to main content or area navigation.

Contact Us

EPA Response to Enbridge Spill in Michigan

Response History

Enbridge Energy Partners LLP (Enbridge) reported a 30-inch pipeline ruptured on Monday, July 26, 2010, near Marshall, Michigan. The release, estimated at 843,000 gallons, entered Talmadge Creek and flowed into the Kalamazoo River, a Lake Michigan tributary. Heavy rains caused the river to overtop existing dams and carried oil 35 miles downstream on the Kalamazoo River.

As the federal agency in charge of the response to the spill, EPA assumed a leadership role in the Unified Command and mobilized an Incident Management Team made up of federal, state and local agencies.

On July 27, the day after the spill was reported, EPA issued a legal order under the authority of the Clean Water Act directing Enbridge to conduct removal actions. EPA also ordered the company to produce documents and information relevant to EPA's investigation into the source, extent and nature of the oil spill.

On July 28, 2010, the spill was contained approximately 80 river miles from Lake Michigan.

Map showing river closures.

The map above lists plans for river closures as of July 2014.

EPA transition to MDEQ

In the fall of 2014, Enbridge completed its remaining obligations to the 2013 EPA Order that directed specific sub-oil and sediment removal criteria pursuant to EPA authority. The final portion of this work, the sediment removal by dredging at Morrow Lake and the Delta, was completed in October 2014. Upon completion of this dredging activity, and based on successful completion of the other work requirements of the 2013 Order, EPA determined that Enbridge has completed all of the prescribed actions, and has now transitioned the site to the Michigan Department of Environmental Quality.

EPA issued a letter to MDEQ in August 2014 that outlined EPA's intent to transition the site to the state agency once the dredge work under the 2013 Order was completed. EPA demobilized from the site in early November 2014.

MDEQ is now the active Site lead agency and is coordinating with the affected stakeholders. Any questions can be directed to the
MDEQ Environmental Assistance Center at 1-800-662-9278.

Dredging to Continue in 2014 at Morrow Lake and the Delta

Map showing river closures

July 9, 2014 - Dredging activities began at Morrow Lake, including the Delta, in June 2014 and will continue throughout the summer. To date, Enbridge has completed over 30 percent of dredging there. Some areas of the lake will be closed all or part of the recreation season to protect residents and workers from possible harm in work zones. The map above (click to enlarge) lists plans for river closures as of July 2014 and will be updated as areas open.

Map of Kalamazoo River Closure During 2014 Dredging (PDF) (1p, 202K)

Dredging at the Mill Ponds impoundment was completed in May 2014, after weather delays in December 2013. All contaminated sediment at the Mill Ponds dredge pad were dewatered and disposed of by June 2014. The Mill Ponds dredge pad was removed, and MDEQ is overseeing the restoration of cover vegetation.
Overall Removals
Despite delays, substantial levels of oil and oil-contaminated materials were removed from the river under EPA’s March 2013 order. From May 2014 to the present, those removals, measured in cubic yards, were:


2014 Cumulative estimated dredge waste

Mill Ponds

5,210 cubic yards

Morrow Lake

28,500 cubic yards


 33,710 cubic yards


Photo Gallery

See some photos from the cleanup

Contact Us

Comments or questions

Media Inquiries

Community Involvement Coordinator

Contractor Information

Information Repositories

Review documents related to the EPA Response to the Enbridge Spill in Michigan at these local libraries:

Marshall District Library
124 W. Green St.
Marshall, Mich.

Helen Warner Library
36 Minges Creek Place
Battle Creek, Mich.

Willard Public Library
7 Van Buren St. W.
Battle Creek, Mich.

Jump to main content.