Tons of radioactive waste is put in landfills all of the time. Usually, it just has to decay down to background radiation levels before it is allowed to be dump

Tons of radioactive waste is put in landfills all of the time. Usually, it just has to decay down to background radiation levels before it is allowed to be dumped there. Most US landfills have radiation detectors where the trucks enter. If your industrial trash sets off the alarms, they will usually ship it back to you and make you deal with whatever is setting off their alarms. This happens , for example, to hospitals sometimes, as they generate a lot of radioactive waste from nuclear scans, etc.