Article 15 4.

As soon as possible, but no later than 30 days after completion of the interim recovery operation or interim disposal operation, and no later than one year, or the shorter period referred to in Article 9(6), after the receipt of the waste, the facility carrying out that operation shall, under its responsibility, provide a certificate to the notifier and the competent authorities concerned that the operation has been completed. That certificate shall be supplied in or annexed to the movement document.