Trichloroethylene (TCE) contamination found in the groundwater in 2004 in Cambridge still hasn’t been remediated. The contamination is from the former Northstar Aerospace facility. In 2004, an environmental site assessment of houses near the facility discovered TCE contamination; a 2006 report concluded that a total of 350 homes and four businesses were affected by the TCE contamination and that the contamination plume extended to the Grand River. The original estimate for the length of time for cleanup was 10 years. Currently, there’s no estimate for how much longer remediation will take.