What action must be taken if a supermarket system with R-22 leaks more than 125% of its full charge in one year?

Submitting a report to the EPA is the required action if a supermarket system using R-22 leaks more than 125% of its full charge within a year. The EPA has established guidelines under Section 608 of the Clean Air Act, which require technicians and owners to report significant refrigerant leaks. This requirement is in place to monitor and control the releasing of ozone-depleting substances into the atmosphere.

Leaking refrigerants like R-22 is not only a loss of refrigerant but also contributes to environmental harm. Reporting this type of leak allows the EPA to track the emissions and help enforce regulations meant to protect the environment. When leaks exceed a certain threshold, it indicates that the system may need a more thorough investigation or even replacement to mitigate future emissions and inefficiencies.

The other options do not align with the EPA guidelines because just replacing the system may not be necessary at this point; failing to report would go against the law, and routine maintenance checks, although important, would not fulfill the regulatory requirement for reporting such a significant leak.