Asbestos Hazard Management and Abatement (General)
This domain tests how North Carolina regulates asbestos from identification through disposal: who may inspect, design, supervise, remove, monitor, and clear a project; when notification to the Health Hazards Control Unit is required; and which work practices prevent fiber release under NESHAP, AHERA, OSHA, and 15A NCAC 19C.
Regulatory layers
- NESHAP: applies to renovation/demolition of facilities; ACM contains more than 1% asbestos; RACM includes friable ACM and nonfriable Category I/II material that will be crushed or processed. Wet methods, HEPA ventilation, no visible emissions, sealed/labeled waste, and waste shipment records are required.
- AHERA: K-12 school inspections, management plans, and clearance; NC relies on accredited inspectors, management planners, project designers, supervisors, workers, and air monitors.
- OSHA: protects workers; PEL is 0.1 f/cc as an 8-hour TWA and EL is 1 f/cc over 30 minutes; exposure monitoring, medical surveillance, training, regulated areas, PPE, and decontamination apply.
Project sequence
An accredited inspector identifies and samples suspect material, or it is assumed to be ACM. The contractor holds NC abatement licensure; supervisors and workers hold current accreditation. Notification is submitted to the NC Health Hazards Control Unit at least 10 working days before start, with emergency provisions as exceptions. Containment uses critical barriers, negative pressure, HEPA filtration, and a decontamination unit. Work uses wet methods, HEPA vacuums, and prompt bagging or wrapping; dry sweeping and visible emissions are prohibited. Waste is labeled, manifested, and disposed at an approved landfill. Clearance requires visual inspection and, where required, air monitoring before reoccupancy.
Worked example
A 2,000 ft2 office renovation will disturb 300 ft2 of 2% chrysotile ceiling tile and 120 linear ft of 2% pipe insulation. The pipe insulation is friable RACM; the ceiling tile is ACM and becomes RACM if crumbled. Because the project disturbs friable RACM and exceeds minor-project limits, use a licensed contractor, accredited workers and supervisor, 10-working-day notification, containment, and a waste manifest. Do not treat the tile as non-asbestos merely because it is only 2%.
Traps
Assuming nonfriable means harmless; sampling without accreditation; skipping notification because the job is “small”; dry sweeping; failing to label waste; and ordering clearance before visual inspection.