What defines a material as Asbestos Containing Material (ACM)?

A material is classified as Asbestos Containing Material (ACM) when it contains any detectable asbestos, regardless of the amount. This encompasses materials that may have only a small percentage of asbestos fibers present but are still considered hazardous due to the potential release of fibers into the air. The definition is crucial for regulatory compliance and health safety, as even minor amounts of asbestos can lead to health risks when disturbed or handled improperly.

While the presence of visible fibers or the friability (how easily a material can crumble) of the asbestos may be relevant in assessing risk and required control measures, they do not dictate the definition of ACM. Additionally, the size of the sample taken does not influence whether the material is classified as ACM; rather, it is the detectability of asbestos that is key. This definition ensures that any material containing asbestos is managed properly to safeguard public health.