Where must negative air machines be exhausted during asbestos abatement?

During asbestos abatement, it is crucial to maintain air quality and prevent the spread of asbestos fibers. The correct procedure involves exhausting negative air machines to the exterior of the building. This ensures that any contaminated air is removed from the work area, minimizing the risk of inhalation by workers and contamination of other areas within the building. By directing air outside, asbestos fibers are effectively contained and do not circulate back into occupied spaces.

Exhausting air to the exterior also complies with safety regulations aimed at protecting worker health and the surrounding environment from potential asbestos exposure. Proper ventilation practices during abatement are essential for maintaining a controlled and safe work environment and for ensuring compliance with federal and state regulations regarding hazardous materials.