In the U.S., which of the following is NOT primarily associated with fire codes?

The Environmental Protection Agency (EPA) is primarily focused on environmental protection, including air and water quality, waste management, and chemical safety. Although the EPA does regulate some aspects that could intersect with fire safety, such as hazardous waste disposal that may prevent fire hazards, fire codes are not under its main jurisdiction. Instead, fire codes are primarily developed and enforced by organizations and agencies focused directly on fire safety and prevention.

In contrast, the other options have direct links to fire codes. The Occupational Safety and Health Administration (OSHA) sets and enforces workplace safety standards, including regulations that address fire hazards in the workplace. The Department of Transportation (DOT) oversees the transportation of hazardous materials, which includes ensuring that flammable substances are handled according to fire safety regulations. The National Fire Protection Association (NFPA) is heavily involved in creating codes and standards that specifically aim to reduce fire risks and improve fire safety. This makes the EPA the most distinct choice in the context of fire codes.