Final answer:
The EPA can require technicians to demonstrate their ability to properly handle refrigerants. Failure to do so may result in a fine and license suspension. This enforcement ensures safe recycling practices and environmental protection.
Step-by-step explanation:
The question pertains to the enforcement powers of the Environmental Protection Agency (EPA) regarding the competency of technicians in handling refrigerants. The EPA can require technicians to prove their ability to properly recover and recycle refrigerants, as improper handling can lead to environmental hazards such as contamination of soil and drinking water. Failure to demonstrate this competency can indeed result in a fine or license suspension, specifically both a) a fine and b) license suspension. The EPA has the authority to enforce these regulations to ensure that all recycling and recovery procedures are done safely and in compliance with environmental standards.