Industry and commercial operations house hazardous materials; they spill, degrade, require inventory, and, ultimately, disposal. Hazardous materials work is assigned in advance of building renovation, demolition/site reuse, or to support tenant needs. Materials involved include solid wastes, asbestos, lead-based paint, radioactive materials, heavy metals-containing components, polychlorinated biphenyls (PCBs), chlorofluorocarbons (CFCs), and mold/microbial-damaged building materials.