According to EPA and OSHA, how much asbestos by weight must materials contain to be classified as asbestos-containing materials?

Materials are classified as asbestos-containing if they contain greater than 1% asbestos by weight. This threshold is established by the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA) to ensure that materials containing asbestos, even in small amounts, are properly managed and handled due to the known health risks associated with asbestos exposure.

This definition is important for regulatory purposes, as it determines the scope of regulations that apply to the handling and disposal of these materials. Materials with more than 1% asbestos require specific safety protocols to minimize health risks to workers and the public. Knowing this classification helps in identifying materials that may pose a risk and underscores the importance of safe practices in environments where asbestos may be present.