Polychlorinated Biphenyls (PCBs)

PCBs are used as heat transfer agents in electrical transformers. They are essentially harmless if undisturbed. However, if a transformer leaks, burns, or explodes, lethal dioxin gas may be released. The Environmental Protection Agency (EPA) has classified PCBs as human carcinogens, hazardous materials, and priority toxic pollutants.

PCB-containing electrical transformers have been around for many years; some of them are still in use and have presented no threat to the environment. However, when PCBs are discovered on a property, it is crucial to take the time to determine the best, safest, and most cost-effective plan of action regarding them.

Consult with the local utility and have electrical transformers on the property inspected, especially if the transformers were installed before 1976. The utility can identify PCB-containing transformers, which should be inspected regularly to make sure they are not leaking. Also keep in mind the following:

• Only authorized waste handlers may dispose of leaking transformers, and they must dispose of them in licensed locations.
• Property owners are liable for any PCB contamination, even after a leaking transformer has been removed.
• Transformers may be owned by the electrical utility that is responsible for their maintenance.