(48) The power to adopt acts in accordance with Article 290 TFEU should be delegated to the Commission in respect of amending the Annexes to this Directive and the references to international instruments to the extent necessary to bring them into line with Union law or in order to take account of developments at international level, in particular at IMO level; amending the Annexes to this Directive when this is necessary in order to improve the implementation and monitoring arrangements established by it, in particular in relation to the effective notification and delivery of waste, and the proper application of exemptions; as well as, in exceptional circumstances, where duly justified by an appropriate analysis by the Commission and in order to avoid a serious and unacceptable threat to the marine environment, amending this Directive to the extent necessary to avoid such a threat, in order to prevent, if necessary, changes to those international instruments from applying for the purposes of this Directive. It is of particular importance that the Commission carry out appropriate consultations during its preparatory work, including at expert level, and that those consultations be conducted in accordance with the principles laid down in the Interinstitutional Agreement of 13 April 2016 on Better Law-Making (16). In particular, to ensure equal participation in the preparation of delegated acts, the European Parliament and the Council receive all documents at the same time as Member States’ experts, and their experts systematically have access to meetings of Commission expert groups dealing with the preparation of delegated acts.