I projects are not completed in a single day. Examples of Class II work include floor tile removal and roofing projects. Generally, Class III projects are completed in less than one day. Work operations conducted in areas where the asbestos or asbestos product is below one percent. See Class I, II, III, and IV work categories.
All abatement categories have specialized training requirements .
For additional information on recent asbestos management activity, please link to the Asbestos Activity News page. Most often asbestos is removed during maintenance activities, or during remodeling projects. During larger projects or projects of greater complexity, negative pressure enclosures are constructed to prevent the release of any asbestos fibers into the occupied areas of the building. Example of a negative pressure enclosure for a Class I abatement project in a campus mechanical room. The large box-like object in the center is a HEPA filtered negative pressure machine.