At the time of the massive September fires that blanketed parts of metro Atlanta in toxic plumes, BioLab was storing more than twice the amount of reactive chemicals in its warehouse than it had previously disclosed to Rockdale County officials years before, according to a new report from the U.S. Chemical Safety and Hazard Investigation Board.

In 2019, when BioLab requested permits to build a new warehouse at its Conyers facility, the company told Rockdale officials it anticipated an “average inventory” of about 6.2 million pounds of raw materials would be stored there, the federal agency also called CSB said.

But at the time of the fires, nearly 14 million pounds of chemicals were stored in the building, according to the CSB report. BioLab did not immediately respond to a request

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