Final answer:
The final person in the disposal chain is responsible for ensuring that refrigerant has been removed from household refrigerators before they are disposed of.
Step-by-step explanation:
According to the Section 608 "safe disposal requirements," the responsibility for ensuring that refrigerant has been removed from household refrigerators before they are disposed of falls on the final person in the disposal chain. It is important to properly handle and remove refrigerants, as they are considered hazardous substances due to their potential to deplete the ozone layer and contribute to global warming.