RESPONDENT FAILED TO (1) RECOVER ANY REMAINING REFRIGERANT FROM APPLIANCES CONTAINING REFRIGERANT OBTAINED FOR THE PURPOSE OF SALVAGE OR DISPOSAL; OR (2) VERIFY THAT THE REFRIGERANT HAD BEEN EVACUATED PREVIOUSLY BY OBTAINING SIGNED STATEMENTS OR HAVING WRITTEN CONTRACTS WITH ITS SUPPLIERS; OR (3) PROVIDE WRITTEN NOTIFICATION, SUCH AS WARNING SIGNS OR LETTTERS TO SUPPLIERS THAT REFRIGERANT HAD BEEN PROPERLY REMOVED PRIOR TO DELIVERY TO THE FACILITY.