Which federal agency regulates the disposal of hazardous chemicals and biohazardous wastes?

The Environmental Protection Agency (EPA) is the correct answer because it is the federal agency responsible for the regulation of hazardous waste management, including the disposal of hazardous chemicals and biohazardous wastes. The EPA establishes guidelines and regulations to ensure that hazardous materials are managed in a way that protects human health and the environment. This includes overseeing the proper disposal methods to mitigate the risks associated with toxic substances and medical waste.

In contrast, other agencies have different primary roles. For example, the Federal Drug Administration (FDA) primarily oversees food and drug safety, including the approval of pharmaceuticals and medical devices, but it does not specifically focus on waste disposal. The Occupational Safety and Health Administration (OSHA) focuses on workplace safety and health regulations, including the safe handling of hazardous materials in a work environment, but is not directly involved in the regulation of waste disposal practices. The Department of Health and Human Services (HHS) is primarily concerned with health and welfare policies, including public health, rather than waste management. Hence, the EPA's specific mandate makes it the appropriate agency for this regulation.