L 109/22 Official Journal of the European Union 21.4.2012 COMMISSION IMPLEMENTING DECISION of 29 March 2012 amending Decision 1999/94/EC on the procedure for attesting the conformity of construction products pursuant to Article 20(2) of Council Directive 89/106/EEC as regards precast normallightweight/autoclaved aerated concrete products (notified under document C(2012) 1977) (Text with EEA relevance) (2012/202/EV) THE EUROPEAN COMMISSION, Having regard to the Treaty on the Functioning of the European Union, Having regard to Council Directive 89/106/EEC of 21 December 1988 on the approximation of laws, regulations and adminis- trative provisions of the Member States relating to construction products ("), and in particular Article 13(4)(a) thereof, After consulting the Standing Committee on Construction, Whereas: (1) On 25 January 1999, the Commission adopted Decision 1999/94/EC on the procedure for attesting the conformity of construction products pursuant to Article 20(2) of Council Directive 89/106/EEC as regards precast normal/lightweight/autoclaved aerated concrete products (2). (2)  Annex III to Decision 1999/94/EC should be amended in order to adapt the systems of attestation of conformity for beam/block floor units and elements incorporating organic material to technical progress in order to take into account uses subject to regulations on reaction to () O] L 40, 11.2.1989, p. 12. () O] L 29, 3.2.1999, p. 55. fire, as a different level of third party intervention should be ensured depending on the processes and materials used in production. (3)  Decision 1999/94/EC should therefore be amended accordingly, HAS ADOPTED THIS DECISION: Article 1 Annex III to Decision 1999/94/EC is amended in accordance with the Annex to this Decision. Article 2 This Decision is addressed to the Member States. Done at Brussels, 29 March 2012. For the Commission Antonio TAJANI Vice-President