19.9.2005 Official Journal of the European Union L 2431 (Acts whose publication is not obligatory) COMMISSION COMMISSION DECISION of 17 August 2005 on the establishment of a register of sites to form the intercalibration network in accordance with Directive 2000/60/EC of the European Parliament and of the Council (notified under document number C(2005) 3140) (2005/646[EC) THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Community, Having regard to Directive 2000/60/EC of the European Parlia- ment and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy (?), and in particular section 1.4.1(vii) of Annex V thereto, Whereas: Article 4(1)(a)(ii) of Directive 2000/60/EC requires the Member States to protect, enhance and restore all bodies of surface water with the aim of achieving good surface water status at the latest 15 years after the date of entry into force of the Directive, subject to certain exceptions, in accor- dance with the provisions laid down in Annex V thereto. Article 4(1)(a)(iii) of Directive 2000/60/EC requires the Member States to protect and enhance all artificial and heavily modified bodies of water, with the aim of achiev- ing good ecological potential and good surface water chemical status at the latest 15 years from the date of entry into force of the Directive, subject to certain exceptions, in accordance with the provisions laid down in Annex V thereto. In accordance with point (i) of Section 1.4.1. of Annex V to Directive 2000/60/EC, the references to eco- logical status should be construed as references to ecologi- cal potential as regards artificial and heavily modified water bodies. () O L 327, 22.12.2000, p. 1. Directive as amended by Decision No 2455/2001/EC (O] L 331, 15.12.2001, p. 1). 2 Section 1.4.1 of Annex V to Directive 2000/60/EC pro- vides a process to ensure the comparability between Mem- ber States of biological monitoring results, being a central part of the ecological status classification. This requires the results of the Member States’ monitoring and classification systems to be compared through an intercalibration net- work comprised of monitoring sites in each Member State and in each ecoregion of the Community. The Directive requires the Member States to collect, as appropriate, the necessary information for the sites included in the inter- calibration network, in order to enable the assessment of the consistency of the national classification system with the normative definitions of Annex V to Directive 2000/60/EC and the comparability of the classification systems between the Member States. For the purposes of the establishment of 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, Member States were asked to select sites based on their interpretation of the normative definitions of the high- good and good-moderate class boundaries. For those sites, notification of the current provisional classification status was required. Each Member State was asked to provide, if possible, relevant information for, at least, two sites for each of the two class boundaries for each of the common surface water body types selected for the intercalibration network, and present in its national territory. The Member States were also invited to indicate sites that are close to the classification borders but not necessarily precisely on the borders as provisionally classified by the current national assessment methods.