When recovering R-12 from a small appliance with a working compressor, using a recovery device manufactured after November 15, 1993, what percentage of the remaining charge must be removed from the system?

Correct Answer: Option C — 90%

EPA Section 608 regulations mandate that recovery equipment manufactured after November 15, 1993, for small appliances with a working compressor, must achieve a minimum of 90% refrigerant recovery efficiency when the compressor is operational.