What is residual Risk for Air Toxics?
Section 112(f) of the Clean Air Act (CAA) requires EPA to complete a Report to Congress that includes a discussion of methods the EPA would use to evaluate the risks remaining after the application of maximum achievable control technology (MACT) standards. These are known as residual risks. EPA published the Residual Risk Report to Congress in March 1999. The CAA also directs the EPA to conduct risk assessments on each source category subject to MACT standards, and to determine if additional standards are needed to reduce residual risks.
