Final answer:
The hazardous material identification number must be displayed on the shipping paper and the package, and is also required on cargo tanks and bulk packaging, according to United States Department of Transportation and EPA regulations.
Step-by-step explanation:
The hazardous material identification number must appear on the shipping paper and on the package. This identification is essential to ensure the safety of handlers, transporters, and emergency responders. According to the United States Department of Transportation hazardous materials regulations, as well as the Environmental Protection Agency's hazardous waste regulations, this information is crucial for the safe and legal transportation of hazardous materials. It helps in identifying the type of hazardous material being transported, facilitating the appropriate response in case of an accident or spill. The hazardous material ID is also important for labeling cargo tanks and bulk packaging.