When is air monitoring required during an abatement project?

Air monitoring is crucial during an abatement project, particularly when demolition or intensive removal activities occur, because these processes can disturb lead-containing materials and increase the likelihood of airborne lead particles. It is essential to monitor air quality during these high-risk phases to ensure that lead levels remain within safe limits, protecting the health of workers and anyone nearby. Continuous monitoring allows for immediate response to any potential hazards, thereby maintaining a safe working environment and compliance with regulatory standards.

In the context of the other options, air monitoring is not solely required during initial inspections or routine maintenance, as these activities typically pose less risk of lead exposure. Additionally, while post-project monitoring is important to confirm that lead levels have returned to safe standards, it does not address the immediate risks present during active abatement tasks. Hence, the requirement for monitoring during demolition or intensive removal is critical for ensuring safety throughout the duration of the project.