The 20-acre Ionia City Landfill is located in Ionia, Michigan. The landfill operated from the mid-1930s until it closed in 1968 or 1969. Site operators dumped and burned mixed residential and industrial wastes, including drummed liquids and solids, at the site. Waste disposal operations contaminated soil, surface water and groundwater with hazardous chemicals. The site is located in the floodplain of the Grand River. Following cleanup, operation and maintenance activities are ongoing.