Stellantis: Odor from Mack plant not health risk, ducting issue to be fixed within weeks

A Stellantis representative told Detroit residents Wednesday night that odors from one of the company’s east side plants that prompted more than 50 complaints to state regulators are not a health risk.

The representative, Al Johnston, a manager of corporate environmental programs for the automaker, also said a separate issue involving ducting of exhaust gases from the painting processes would be corrected by the end of the year. That exhaust was not being routed through emissions control equipment, an issue discovered after residents began complaining about odors.

Johnston said the company, which owns the Jeep, Ram, Dodge and Chrysler brands, takes “full responsibility” and is working to address concerns at its Mack plant, where new versions of the Jeep Grand Cherokee are built. 

His comments came during a sometimes tense, three-hour annual meeting held via Zoom to update residents on the status of the community benefits agreement between the city and company that followed the announcement of the plant in 2019. Aside from the odor and emissions concerns, the meeting topics touched on everything from the number of Detroiters hired at the plant to educational efforts funded by the agreement.

“The odor issue at the site, which we’re working to address, is not an air health risk. This is what we’ve determined through modeling that we’ve done. The State of Michigan did the same modeling. They confirmed our conclusion on that,” Johnston said, noting that “obviously odors are not acceptable. We’re working on a solution to that. … We don’t want odors to be emitted from our facility.”

Johnston also provided data from ambient air quality monitoring the company has conducted on the site, which he said showed that concentrations of particulate matter and nitrogen dioxide are consistent with state monitoring at a location on east Seven Mile Road, meaning that the air quality is similar at a site away from the plant. He also referenced company testing that he said showed that volatile organic compounds in the area of the plant were not problematic.