Michigan Residential Builders License Practice Test

Asbestos containing material (ACM) is defined as any material containing more than what percentage of asbestos?

1. 0.5%

2. 1%

3. 5%

4. 10%

The correct answer is: 1%

Asbestos containing material (ACM) is classified as any material that contains more than 1% asbestos. This threshold is significant because it dictates regulatory requirements and protocols for handling, removal, and disposal of asbestos materials in construction and renovation projects. Understanding this percentage is crucial for contractors and builders to ensure compliance with safety regulations and to protect both workers and occupants from the health risks associated with asbestos exposure. While materials with lower percentages may still pose risks, those containing over 1% are subject to strict regulations due to their higher likelihood of releasing harmful asbestos fibers into the air during disturbance.