In Class I abatement projects, what must employers assume about asbestos exposure?

In Class I abatement projects, employers must assume that asbestos exposure exceeds both the Time Weighted Average (TWA) and excursion limits. This is due to the high risk of exposure associated with the handling of asbestos-containing materials during these types of abatement activities. Class I projects typically involve the removal of materials that contain a high concentration of asbestos, such as insulation on pipes or tanks, which can release large amounts of airborne asbestos fibers if not properly managed.

By assuming that exposure exceeds regulated limits, employers are required to implement comprehensive safety measures and personal protective equipment (PPE) to safeguard the health of workers and others in the vicinity. This approach prioritizes the health and safety of employees during high-risk operations by enforcing stricter controls and ensuring that all necessary precautions are taken to mitigate exposure to asbestos fibers. This assumption aligns with regulatory standards that mandate a proactive stance on occupational health risks in environments where asbestos is present.