California UST System Operator Practice Exam - Study Guide & Practice Test

The Environmental Protection Agency (EPA) is the agency responsible for overseeing underground storage tank (UST) regulations in the United States. The EPA establishes standards and regulations to ensure that USTs are properly managed to prevent leaks and contamination of soil and groundwater. This includes setting guidelines for installation, operation, maintenance, and closure of UST systems, along with compliance monitoring and enforcement.

The agency plays a crucial role in promoting environmental protection and public health by regulating the handling of hazardous substances, which includes the fuels stored in USTs. Their regulations aim to minimize the risks of environmental damage and protect community health from the impacts of leaks and spills.

Other agencies listed, such as the Federal Aviation Administration, Occupational Safety and Health Administration, and National Highway Traffic Safety Administration, have distinct missions unrelated to UST oversight, thus making them unsuitable choices for this question.