Parts A and C of Annex II and Annexes III and IV may be amended, in the light of scientific and technical progress, in accordance with the regulatory procedure with scrutiny referred to in Article 9(2), taking into consideration the period for reviewing and updating river basin management plans, as referred to in Article 13(7) of Directive 2000/60/EC.

Part B of Annex II may be amended, in accordance with the regulatory procedure with scrutiny referred to in Article 9(2), in order to add new pollutants or indicators.