What regulatory agency oversees vapor recovery standards in the United States?

The Environmental Protection Agency (EPA) is the primary regulatory agency responsible for overseeing vapor recovery standards in the United States. The EPA's role includes establishing and enforcing regulations designed to minimize air pollution and protect the environment and public health. Vapor recovery systems, which capture gasoline vapors during the refueling process, fall under these guidelines, particularly in relation to the Clean Air Act.

The EPA sets standards to ensure that vapor recovery systems are effective and that they help reduce emissions of volatile organic compounds (VOCs) which can contribute to air pollution and smog formation. These regulations help promote safer practices in industries that deal with the storage and transfer of fuel.

The other agencies mentioned have different roles: OSHA focuses on workplace safety and health, the FTC deals with consumer protection and competition, and the DOE primarily concerns itself with policies regarding energy and nuclear safety. Therefore, they do not have direct jurisdiction over vapor recovery standards.