What happened

An explosion shook the area around Clean Harbors' El Dorado hazardous-waste incineration complex at about 23:00. The company described the event as a localized energetic reaction in waste-processing equipment associated with an incinerator. It produced a small fire that on-site personnel quickly extinguished. El Dorado police confirmed receiving a report of a small internal explosion and responding to the facility. No injuries were reported. Police said there was no reported chemical release or danger to the community, while Clean Harbors likewise said the event presented no off-site risk. Those conclusions are retained as attributed statements because the reviewed public reporting did not identify the material involved or provide a completed independent technical cause finding; the company said the cause was under review. EPA records identify the address as a hazardous-waste treatment and disposal facility and separately list a non-NPL, removal-only Superfund release site associated with Clean Harbors at the same location.

When cited sources give different casualty, damage or spill figures for this event, they’re reported side by side above rather than merged into one number. See how confidence levels work.