SAVANNAH, Ga. (AP) — A Georgia lawmaker says federal officials are proposing $8.7 million in fines against Imperial Sugar for violations at a plant near Savannah where an explosion killed 13 people and at another plant in Louisiana.

Rep. Jack Kingston says Occupational Safety and Health Administration officials tell him the fine will be the third-highest in the federal agency’s history. He says the proposed fines include $5 million for the explosion near Savannah and $3.7 million for the plant in Gramercy, La.

Officials found violations at the Louisiana plant a month after the Feb. 7 Georgia blast.

Texas-based Imperial Sugar has owned the 90-year-old Georgia refinery that produces Dixie Crystals brand sugar since 1997. The company will have 15 days to contest the penalties.