How should refrigerant be disposed of according to regulations?

Refrigerant disposal is governed by strict regulations due to the potential environmental impacts of refrigerants, particularly those that contribute to ozone depletion and global warming. The correct response indicates that refrigerants must be reclaimed and recycled by certified personnel. This process ensures that harmful substances do not enter the atmosphere and are instead processed in a way that minimizes environmental impact.

Certified personnel are trained to handle refrigerants safely, using proper equipment to reclaim the substances. This might involve capturing the refrigerant from equipment in a controlled manner, preventing leaks or accidental releases. By following these regulations, the risk of environmental contamination is significantly reduced.

The other options suggest improper disposal methods that do not align with environmental and safety regulations. Regular waste disposal, atmospheric release, or diluting and pouring down the drain are all prohibited practices that could lead to severe ecological damage and health risks. Thus, the regulated approach of reclaiming and recycling by certified individuals is essential for environmental protection and compliance with the law.