The Pennsylvania Department of Environmental Protection (DEP) has fined Allied Waste Systems of Pennsylvania $650,000 for gas, odor and operational violations at the firm’s landfill in Findlay Township, Pa.

“The department began investigating Imperial after receiving numerous complaints from residents around the landfill and from teachers and staff at nearby Wilson Elementary School,” said DEP Southwest Regional Director George Jugovic Jr. in a press release. “While management at the landfill has taken some steps toward improvement, they have not yet effectively controlled off-site odors.”

The $650,000 fine is required to be paid within 10 days and will be contributed to the Solid Waste Abatement Fund, which funds cleanups across the state.