DOJ sues Denka, DuPont over Louisiana plant emissions

On February 28, 2023, the Environmental Protection Agency and Department of Justice sued Denka Performance Elastomer LLC and DuPont Specialty Products USA LLC over chloroprene emissions at Denka’s neoprene production plant in Saint John the Baptist Parish, Louisiana.

Regulatory context
The Environmental Protection Agency (EPA) regulates hazardous air pollutants (HAPs) under the Clean Air Act (CAA). The EPA regulates 188 HAPs, including chloroprene. Chloroprene is a flammable liquid utilized in producing neoprene elastomers for use in many different products. It is colorless and readily evaporates at room temperature.

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