Which method is NOT a recognized way to dispose of radioactive waste?

The method of dumping radioactive waste in landfills is not a recognized way to dispose of radioactive waste because it poses significant risks to public health and the environment. Radioactive materials can leach into soil and groundwater, potentially contaminating drinking water sources and posing radiation hazards to the surrounding community.

In contrast, transferring radioactive waste to an authorized user is acceptable when the receiving entity is properly licensed to handle such materials, ensuring that the waste is managed safely and legally. Decay in storage is a recognized method where waste is stored for a determined period, allowing its radioactivity to decrease to a safe level, after which it can be disposed of more easily. Proper disposal methods are carefully regulated by laws and guidelines to ensure safety and compliance with environmental standards.