Asbestos Part 2 Supplemental Evaluation Including Legacy Uses and Associated Disposals; Risk Evaluation Under the Toxic Substances Control Act (TSCA); Notice of Availability

The Environmental Protection Agency (EPA or Agency) is announcing the availability of the final supplemental risk evaluation under the under the Toxic Substances Control Act (TSCA) for asbestos Part 2: addressing legacy uses and associated disposal. The purpose of risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment, without consideration of costs or non-risk factors, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, under the conditions of use. For the part 2 supplemental risk evaluation, the Agency evaluated legacy uses and associated disposals of asbestos including chrysotile asbestos, five additional fiber types, conditions of use for asbestos-containing talc that are subject to TSCA, and Libby asbestos. EPA used the best available science to prepare this final supplemental risk evaluation and determined, based on the weight of scientific evidence, that asbestos poses unreasonable risk to human health. Under TSCA, EPA must initiate risk management actions to address the unreasonable risk.