EPA adds 1-bromopropane (1-BP) to the Clean Air Act List of Hazardous Air Pollutants 1/25/2022 4:25:00 PM View Count 1687 On January 5, 2022, the U.S. Environmental Protection Agency (EPA) published a final rule to add 1-bromopropane (1-BP) to the Clean Air Act (CAA) list of hazardous air pollutants (HAP).