The fire started about 5 a.m. after a sprinkler head malfunctioned and mixed with a water-reactive chemical and wiring at the plant, Rockdale County fire Chief Marian McDaniel said during a press conference Sunday. She said they were working on removing the material away from the water source at the facility and that the fire was contained to the roof. There were employees inside the plant but no injuries have been reported at this time.

“Once we can get that chemical out of the building and allow it to burn off we’ll be in a much better shape,” McDaniel said.

But deputies said the fire eventually reignited after being contained earlier Sunday. Standing in front of the large plume of smoke that turned orange at one point, Rockdale sheriff Eric Levett “strongly asked” residents to stay away from the area, which included I-20 in both directions between Salem Road and Turner Hill Road. That stretch of the interstate and all of its exits in Rockdale County are closed, the Newton County Sheriff’s Office said. Officials created an evacuation zone for a large portion of Conyers due to the fire, which Levett said was burning “pretty good.”

“The interstate as you can see is backed up. We are working with the Georgia State Patrol and Georgia Department of Public Safety to assist with traffic control,” the sheriff said.

There was more traffic than usual in Conyers on Sunday as drivers tried to navigate the closed roads and section of the interstate. A Kroger store on Hwy 138 was shuttered, while a QuikTrip on Klondike Road was pay at the pump only. The lights from police cruisers were visible throughout the area, many of which came from neighboring jurisdictions.

Over her seven years with the fire department, McDaniel said it was the third such incident of “this magnitude,” in which a product mixed with water and started a chemical reaction at the plant. She said the most recent incident likely happened in 2021. The Georgia Emergency Management and Homeland Security Agency (GEMA) said it issued a shelter in place order on behalf of Rockdale’s emergency management agency, but no timetable has been provided as to when the area will be safe.

While it’s unclear what chemical was involved with the fire, officials said the Environmental Protection Agency (EPA) will be sampling the plume to determine its contents. Before the severity of the chemical is determined, evacuation sites will be held at General Ray Davis Middle School on 3375 East Fairview Road in Stockbridge, Bert Adams Boy Scout Camp at 218 Scout Road in Covington, and Wolverine Gym, 8134 Geiger St. in Newton County. A previous site was listed at 90 Hardin St in Conyers, but it is now in the evacuation zone, officials said.

As of Sunday morning, there was not a plan in place for residents unable to return to their homes tonight. County officials will let the public know on its social media channels when the EPA determines the threat level to the community.

“We have about 60 folks over at the scene working through this, so it’s going to be a long process,” McDaniel said.

According to its website, BioLab “is the swimming pool and spa water care division of KIK Consumer Product.” That company is based in Lawrenceville.

The site goes on to say that their brands are “industry leaders” that “pioneered computerized water testing and the 3-step system for pool and spa care.”

“We are actively responding to an occurrence at our facility in Conyers, Georgia,” a BioLab representative said in a statement. “Our employees are accounted for with no injuries reported. Our team is on the scene, working with first responders and local authorities to assess and contain the situation. As always, the safety of our community remains our top priority.”

The fire led to the cancellation of church services from Rockbridge to the Northside County line. Officials said local hospitals will be putting out a PSA about steps to take for those affected by the incident.

The road closures include:

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