What is the proper procedure for air sampling in California public schools?

The proper procedure for air sampling in California public schools is to sample before occupancy and 30 days after. This approach is crucial because it ensures that potential asbestos exposure is assessed both prior to individuals occupying the building and shortly after to confirm that remedial actions have effectively reduced any hazardous materials to safe levels. Sampling before occupancy helps in identifying existing asbestos or related hazards that may pose a risk to students and staff, while follow-up sampling 30 days post-occupancy can verify that air quality remains safe after any necessary abatement measures have been taken. Establishing these benchmarks is essential for maintaining a safe educational environment and complying with health regulations.