Which substances are regulated during abatement activities?

• A. Asbestos, lead, mercury
• B. Pesticides and solvents
• C. Radon and carbon monoxide
• D. Bacteria and viruses

Answer: (A)

The main idea here is that abatement activities focus on materials that are hazardous when they’re disturbed and released into the indoor environment. Asbestos, lead, and mercury are the substances most tightly regulated during these operations because disturbing them can release dangerous fibers, dust, or vapors that pose serious health risks to workers and occupants. Regulations cover how to safely remove or encapsulate these materials, require trained personnel, containment measures to keep dust from spreading, proper air monitoring, and safe disposal.

Pesticides and solvents are regulated in many contexts, but not as the primary targets of building abatement work. Radon and carbon monoxide are addressed through mitigation practices and detectors, not typically the specific abatement of asbestos-containing materials, lead-based paint, or mercury-containing items. Bacteria and viruses fall under biosafety and public health rules rather than construction abatement.