24. 3. 90 Official Journal of the European Communities No L 78/13 COMMISSION REGULATION (EEC) No 709/90 of 23 March 1990 laying down detailied rules applicable to the supply of certain cereals to Poland as provided for in Council Regulation (EEC) No 457/90 THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Economic Community, Having regard to Council Regulation (EEC) No 457/90 of 22 February 1990 on an emergency measure for. the free supply of certain agricultural products to Poland ('), Having regard to Council Regulation (EEC) No 2727/75 - of 29 October 1975 on the common organization of the market in cereals (3), as last amended by Regulation (EEC) No 201/90 (%), and in particular Article 7 thereof, Having regard to Council Regulation (EEC) No 1676/85 of 11 June 1985 on the value of the unit of account and the conversion rate to be applied for the purposes of the common agricultural policy(*), as last amended - by Regulation (EEC) No 1636/87 (%), and in particular Article 2 (4) thereof, Having regard to Council Regulation (EEC) No 457/90 provides for an emergency measure in particular for the supply of certain cereals to Poland ; whereas, with a view to implementing that emergency measure, detailed rules of application should be laid down for the cereals sector providing in particular for the said supply operation to be allocated by a tendering procedure ; whereas common detailed rules should be laid down for invitations to tender opened for the purposes of this measure; Whereas  the detailed rules .of application must also provide for arrangements governing the lodging of securities and controls to ensure the proper execution of the supply operation ; Whereas the conversion rate to be used for the supply costs referred to in Article 2 must be determined; whereas, with a view to-an approach which is more balanced -and more in line with the economic. facts determining such costs, the exchange rate published in the ‘C’ series of the Official Journal of the European Communities should be applied; - Whereas products held by intervention agencies and intended “for export are subject to the provisiens of () OJ No L 48, 24. 2. 1990, p. 3. () O] No L 281, 1. 11. 1975, p. 1. () OJ No L 22, 27. 1. 1990, p. 7. () O No L 164, 24. 6. 1985, p. 1. () OJ No L 153, 13. 6. 1987, p. 1. Commission Regulation (EEC) No 569/88 (%), as last amended by Regulation (EEC) No 676/90 (); whereas, however, the Annex to the said Regulation setting out the entries to be made should be expanded; ‘Whereas the measures provided for in this Regulation are in accordance with the opinion of the Management Committee -for Cereals, HAS ADOPTED THIS REGULATION : Article 1 1. The detailed rules set out herein shall apply for the purposes of the supply of certain cereals to Poland as provided for in Regulation (EEC) No 457/90. 2. All supplies shall entail an invitation to tender for supply costs as defined in Article 2-(2) and the purchase of the product at a fixed price-from the intervention agency concerned. Article 2. 1.  An invitation to tender shall be organized for the supply costs incurred between the intervention stores and the destination laid down. 2.  Such costs shall cover supply for goods loaded in bulk, on the means of transport, ex store of the intervention agency, cif Polish maritime port of unloading . or, in the case of delivery by rail, free at Polish frontier. Article 3 Participation in the invitations to tender provided for under this Regulation shall be open on equal terms to any natural person who is a national of a Member State and established in the- Community or any company established in accordance with the laws of a Member State, the registered office, central administration or main establishment of which is in a Member State. Article 4 Tenderers shall participate in the invitation to tender by forwarding to the intervention agency concerned a tender by letter or any other written means-of telecommuni- cation provided for in the notice of invitation to tender. () OJ No L 55, 1. 3. 1988, p. 1. () OJ No L 75, 21. 3. 1990, p. 8.