Technician came to do a routine maintenance on gas pack. Found entire suction line and evaporator coil iced over 2 inches. This is a 4 ton unit. The standing pressures are 100 psi across high and low side. There is a major refrigeration leak. Performed a leak check and evaporator coil is leaking. I continued with the maintenance, so it wouldn’t have to be done at a later time. A quote was sent to the customer per his request.