Article 1
1. The register of sites to form the intercalibration network referred to in Section 1.4.1(vii) of Annex V to Directive 2000/60/EC is set out in Section 1 of the Annex to this Decision. That register also includes the sites in Bulgaria, Norway and Romania, which are participating in the intercalibration network on a voluntary basis. 2. For the purposes of the establishment of the register and of the intercalibration exercise, Member States shall be divided into Geographical Intercalibration Groups, as listed in Section 2 of the Annex, comprising Member States sharing particular surface water body types.