Which agency oversees the UST regulations at the federal level?

The Environmental Protection Agency (EPA) is the agency responsible for overseeing underground storage tank (UST) regulations at the federal level. Established to protect human health and the environment, the EPA implements regulations concerning the management and operation of USTs, which includes setting standards for design, construction, operation, maintenance, and closure of these tanks. The agency's role is crucial in ensuring that the USTs are monitored for leaks and potential contamination of soil and groundwater. The EPA also provides guidance and resources for state governments and operators to comply with these regulations, thereby playing a pivotal role in environmental protection related to fuel storage.

The other agencies listed do not oversee UST regulations. The Department of Energy primarily focuses on energy policy and does not handle environmental regulations related to storage tanks. The Occupational Safety and Health Administration is concerned with workplace safety and health but does not oversee environmental protections specific to USTs. Lastly, the Federal Bureau of Investigation focuses on law enforcement and domestic security issues rather than environmental regulations.