How many hours must airborne asbestos levels be monitored during a period of normal activity in schools?

The regulation requires that airborne asbestos levels in schools be monitored for a duration of 8 hours during a period of normal activity. This time frame is established to ensure that any potential exposure to airborne asbestos fibers is accurately measured throughout the school day when students and staff are present. Monitoring for 8 hours provides a comprehensive assessment of the air quality, allowing for the identification of any variations in asbestos levels that may occur during typical school operations. By using this standard time frame, schools can ensure they are in compliance with safety regulations designed to protect the health of students and staff from the potential hazards of asbestos exposure.