About 800 gallons of motor oil and hydraulic fluid has been cleaned from the Grand River since Sunday. Officials said they expect more oil to be removed from the river in the coming days.
Don Tucker, Jackson's wastewater treatment superintendent, said city officials were alerted to the spill at about 7 p.m. Sunday. Crews from the city and the Michigan Department of Environmental Quality have put up booms in the water to contain the spill.
The closed stretch of the river is from Lions Park at Blackstone Street to Maple Grove. Tucker said the source and total volume of the spilled oil wasn't known.
"With that amount it's not coming from residential," he said.
The U.S. Environmental Protection Agency also was called. Tricia Edwards, a federal on-scene coordinator with the EPA, said she doesn't think there will be any long-term effects to the Grand River from the spill, but the agency will monitor the spill.
"We have not seen any oiled wildlife," she said Wednesday evening.