13.1.2004 Official Journal of the European Union L7/9 COMMISSION REGULATION (EC) No 50/2004 of 9 January 2004 amending Regulation (EC) No 2535/2001 laying down detailed rules for applying Council Regu- lation (EC) No 1255/1999 as regards the import arrangements for milk and milk products and opening tariff quotas, and derogating from that Regulation THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Community, Having regard to Council Regulation (EC) No 1255/1999 of 17 May 1999 on the common organisation of the market in milk and milk products ("), and in particular Articles 26(3) and 29(1) thereof, Whereas: Chapter III of Commission Regulation (EC) No 2535/ 2001 () mainly concerns an annual quota for butter, which is not shared out over the year. To allow imports under this quota to be spread evenly throughout the quota year, with a view to ensuring an appropriate supply of the internal market, the quota in question should be allocated in two six-month tranches, taking account of the historic development of the product concerned within the quota period. Chapter I of Regulation (EC) No 2535/2001 concerns quotas allocated on the basis of two six-month periods in January and July each year. In view of the accession of 10 new Member States on 1 May 2004, operators in these countries should be given the opportunity to parti- cipate in Community quotas from that date. To this end, the quantities opened in January 2004 should be limited to the quantities equivalent to the period from January to April 2004. However, this allocation should not apply to quotas for the calendar year, where those quotas are characterised by under-utilisation during the previous periods. Regulation (EC) No 2535/2001 includes detailed rules for applying, in the milk and milk products sector, the import arrangements provided for in the Europe Agree- ments between the Community and its Member States, of the one part, and certain countries of central and eastern Europe, of the other part. In order to implement the concessions provided for in Council Decision 2003/ 452[EC of 26 May 2003 on the conclusion of a Protocol adjusting the trade aspects of the Europe Agreement establishing an association between the European (") OJ L 160, 26.6.1999, p. 48. Regulation as last amended by Regu- lation (EC) No 1787/2003 (O J L 270, 21.10.2003, p. 121). () OJ L 341, 22.12.2001, p. 29. Regulation as last amended by Regu- lation (EC) No 2012/2003 (O J L 297, 15.11.2003, p. 19). Communities and their Member States, acting within the framework of the European Union, of the one part, and the Republic of Slovenia, of the other part, to take account of the outcome of negotiations between the parties on new mutual agricultural concessions (), certain existing quotas should be increased. In order to keep the Commission informed of changes in the composition of the cheese imported under the different quotas, under Article 19 of Regulation (EC) No 2535/2001 operators must indicate certain contents on import declarations. Where the contents shown exceed those given in Annex XIII, the competent authorities are to notify the Commission thereof. The notifications received by the Commission since imposing this obliga- tion demonstrate a degree of stability in the composition of the cheese imported, as regards the type and origin of the cheese. The notifications generate a heavy workload for the customs services and the Commission, and produce a substantial volume of documents, while the overruns on the base contents are negligible in most cases. Notifications should therefore be limited to cases where the contents are abnormally high, by adapting the contents in Annex XIII. Moreover, for certain categories of cheese, the advantage of obtaining notifications of overruns of the contents in Annex XIII has proved negli- gible, as any variation in the contents concerned remains within the intervals fixed in the description of those products in the Combined Nomenclature. Notifications for the products in question should therefore be abol- ished. New Zealand has sent the Commission information relating to the new issuing body. Annex XII to Regu- lation (EC) No 2535/2001 should therefore be updated. In view of the accession of the new Member States on 1 May 2004, the period of validity of licences used for imports originating in the new Member States should be limited to 30 April 2004. A derogation should therefore be made from Article 16(3) of Regulation (EC) No 2535/ 2001. () OJ L 152, 22.6.2003, p. 22.