Local officials lifted evacuation orders Friday and said the chemical release at MC Tank Transport in North Toledo is no longer an emergency.
The Toledo Fire & Rescue Department allowed company employees to re-enter the property at 1266 Progress Ave. around noon on Friday after they confirmed the 5,500-gallon tank of glycidyl methacrylate finished venting into the air late Thursday night — nearly 48 hours after the reaction began.
All residents and businesses previously impacted by the evacuation may return to their homes and places of business, city officials said.
At a news conference Friday afternoon, Toledo Mayor Wade Kapszukiewicz said an MC Tank Transport employee “introduced a temperature level to the tank in the process of trying to transfer the liquid,” causing a chemical reaction that turned the industrial chemical into a gas that released from the tank.
“The company has ... accepted responsibility for what happened. This was not an act of nature, it wasn’t any sort of outside action by someone else that caused this to happen. This was a mistake made by an employee of the company,” Mr. Kapszukiewicz said.
City and county leaders, including Toledo council members, will meet virtually with the company on Monday, Councilman Vanice Williams said. The meeting will not be open to the public.
MC Tank Transport stated in two company news releases that it is fully cooperating with investigators and that its top priority is the health of affected residents.
City officials were joined by the U.S. Environmental Protection Agency’s Midwest regional director, Anne Vogel, who outlined efforts to continue monitoring the air and oversee the company’s cleanup of the site once a site safety plan is presented.
“We’ve got various tools available to us that we use alongside our partners at the Ohio EPA, the fire department, and the health community to make sure that no stone goes unturned in terms of monitoring and making sure we’re being protective of human health and the environment,” Ms. Vogel said.
TAGA, a highly specialized mobile laboratory
Along with eight monitoring locations within a quarter-mile radius of the facility, the U.S. EPA’s Trace Atmospheric Gas Analyzer, a mobile laboratory also known as TAGA that analyzes air in real time, was sent to the site Friday.
The city of Toledo expects preliminary air sampling results to show that concentrations of the chemical were too low to cause long-term health effects.
“There’s no doubt that ... extended exposure over a long period of time, at high levels, can be real bad for you — it can be cancerous,” Mr. Kapszukiewicz said. “Based on the data that we’ve seen, ... it just didn’t occur at levels or dosage levels to provide a long-term, meaningful, negative impact on human health.”
Toledo Fire will remain on scene until the company develops a site safety plan, and once the site is deemed safe, it will be turned over to the company under the oversight of the U.S. EPA. Toledo Fire Batalion Chief Blake Molnar said he anticipates the process “will be a somewhat slow handoff back to the company.”
During an hourlong news conference held almost concurrently at One Government Center, about five miles south of MC Tank Transport and about five miles south of where Mayor Kapszukiewicz and Ms. Vogel spoke, a team of four independent scientists said that the main chemical of concern, glycidyl methacrylate, is no longer detectable in outdoor, ambient air near the site.
The team’s findings were based on all-night air sampling it did in North Toledo.
The foursome included Scott Smith, an independent Massachusetts-based scientist with the Blue Shirt Justice League, a group that does testing at industrial accidents nationally, and three air-quality specialists affiliated with Spectral Systems Integration, of Kansas.
One of them, Mark Thomas, Spectral Systems vice president of operations, spent more than 30 years with the U.S. EPA, managing the agency’s Airborne Spectral Photometric Environmental Collection Technology, or ASPECT, from its inception in 2001 until his retirement in 2019. He also spent 10 years as a U.S. EPA on-scene coordinator at emergencies.
Another one, Robert Kroutil, likewise had a long U.S. EPA career, and helped develop software for the ASPECT program at the federal agency. He is a national expert in infrared chemical detection.
The other is a Pittsburgh-based scientist named Phoebe Askelson.
The trio analyzed North Toledo’s air quality late into Thursday evening while Mr. Smith pulled soil samples from the properties of local residents who have granted him permission. The soil samples will take three to five weeks to analyze in a laboratory.
“We’ve already been bombarded by calls,” Mr. Smith said.
Their research is free to each community they visit, with costs covered by an Atlanta-based law firm, the Keenan Law Firm.
Formaldehyde, a cancer-causing byproduct, remains
The air samples, which were analyzed overnight, generated a mixed message.
Although the chemical that grabbed headlines, GMA, can no longer be detected, the team found high levels of a common byproduct of it, formaldehyde, in the air. Though that, too, will eventually dissipate, formaldehyde — just like GMA — is believed to cause cancer among people exposed to it for a long time.
The four scientists said that residents near MC Tank Transport, especially those living within the one-mile mandatory evacuation zone, should be cautious about their indoor air quality because GMA is a heavy chemical known to settle inside kitchen cabinets, basements, and other parts of homes it enters. They urged people to take precautions cleaning dust, by wearing gloves and possibly a face mask, and to wash any clothes they believe might have become contaminated.
Mr. Smith urged anyone showing symptoms of exposure, such as prolonged coughing, shortness of breath, headaches, nosebleeds, and dizziness, to seek help from their doctor or other medical professionals.
Mr. Thomas said it’s a good time to air out homes as a precaution, now that there’s no immediate need for air conditioning or heat during the daytime.
“When in doubt, air your house out,” Mr. Thomas said.
GMA can linger for up to 10 days indoors, Mr. Kroutil said.
“We’re concerned about people going back into their homes in the [evacuation] zone,” he said. “I would want my house checked and analyzed before I go back in.”
First Published October 23, 2026, 8:50 a.m.