The EPA fined DuPont for improper maintenance and repair of two large refrigeration units. When properly maintained, the systems are designed to minimize chlorofluorocarbons (CFCs) from leaking into the environment. CFCs damage the ozone layer.
The company also failed to accurately submit reports to the EPA under the Emergency Planning and Community Right-to-Know Act.
In addition to paying $531,000, DuPont corrected the problems in its leak detection program and will comply with reporting requirements.
Late last year Hyundai and Kia agreed to pay a record $100 million penalty to resolve alleged Clean Air Act violations based on their sale of close to 1.2 million vehicles that will emit approximately 4.75 million metric tons of greenhouse gases in excess of what the automakers certified to EPA.