A report must be made if a material containing more than how many percent asbestos is handled, resulting in dust?

When it comes to regulations regarding asbestos handling, the threshold for reporting is specifically set at 1% concentration of asbestos in materials. This percentage is significant because materials containing more than 1% asbestos are considered as asbestos-containing materials (ACM), which can pose serious health risks to individuals when disturbed, leading to the release of hazardous dust.

The 1% threshold is derived from guidelines provided by agencies such as the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA), which aim to protect workers and the public from the dangers associated with asbestos exposure. When materials exceed this concentration, they require careful handling, specialized procedures, and reporting to ensure proper safety measures are taken, including potential abatement actions.

Understanding the implications of this 1% rule is crucial for plumbing contractors and any professionals involved in construction, renovation, or demolition where potential exposure to asbestos may occur.