104. Which of the following refrigerant releases is a violation of the EPA prohibition on venting?

release of "de minimis" quantities in the course of making good faith attempts to recover refrigerant
release of mixtures of nitrogen and refrigerant that result from adding nitrogen to a fully charged appliance to "leak-check" the appliance
refrigerants emitted in the course of normal operation of an appliance
de minimis refrigerants vented when connecting or disconnecting self-sealing hoses to charge a unit.

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