Investigators say that routine maintenance done on the roof of the Pacific Coast Seafood plant in Warrenton was responsible for a massive fire there in early June.
Warrenton Fire Chief Tim Demers says that contract workers had installed several new vents in the plant’s roof, that were sealed using a propane torch.
Demers says that ignited the underside of the roof, sparking the fire.
Investigators say that it burned for as long as an hour before it was noticed.
The processing plant was almost completely destroyed, save for its ice house and dock.
Workers have since relocated to the Port of Astoria, where they are subletting space from another fish processor.
Pacific Coast Seafood in Warrenton has employed 140 people, while using up to 60 seasonal workers.
At peak capacity, the plant can process up to 600,000 pounds of seafood a day.
Frank Dulcich, the CEO of Pacific Seafood issued a statement Thursday, saying that the company plans to rebuild its facility.
“We are still awaiting a final estimate of damage and report from the insurance company, and upon its completion, we can begin announcing our specific plans for rebuilding,” he said.