Which entity oversees the cleanup of hazardous waste sites that are deemed a risk to public health?

The Environmental Protection Agency (EPA) is responsible for overseeing the cleanup of hazardous waste sites that pose a risk to public health. This role is part of the agency's broader mission to protect human health and the environment. The EPA administers several programs designed to identify and remediate contaminated sites, including the Superfund program, which specifically focuses on cleaning up the most polluted areas.

The EPA evaluates sites for health risks and works with state and local governments to ensure that proper cleanup procedures are followed. They also enforce regulations that prevent further contamination and protect communities from exposure to hazardous substances.

The other entities listed in the choices have distinct roles: the Food and Drug Administration (FDA) regulates food, drugs, and medical devices; the Centers for Disease Control and Prevention (CDC) focuses on public health and disease control; and the Occupational Safety and Health Administration (OSHA) ensures workplace safety. While all of these organizations contribute to public health in various ways, it is specifically the EPA that deals with the cleanup of hazardous waste sites.