Postponed until the 31.07.2017 the deadline of the restricted procedure for pre-qualification purposes (Stage A) about the General Final Design (GFD) and the Detailed Final Design (DFD), as well as the construction and commissioning of Section A, Alsos Veikou – Goudi, of Athens Metro Line 4. The economic operators qualified for Stage A may submit their Technical and Financial offer during Stage B of the Tender for the appointment of a Contractor. The contract will involve the preparation of the GFD and the DFD, the construction of Civil Works (CW), the supply, installation, testing and commissioning of the electro-mechanical and railway equipment, the maintenance of the Project, the training of the personnel and the supply of the spare parts of the Metro Line 4, Section A Alsos Veikou – Goudi (13 km with 14 stations). In addition, the Project shall include the supply of Rolling Stock, as well as the construction of an Operations Control Centre and of the Train Maintenance and Repair Building in the area of Sepolia Depot. For further information http://www.ametro.gr/wp-content/uploads/2017/06/AM_13.06.2017_Clarifications_doc_2_RFP_308_17.pdf,  http://www.ametro.gr/wp-content/uploads/2017/06/AM_26.06.2017_clarifications_doc_3_RFP_308_17.pdf and gr/14. Contact Attiko Metro AE, Atene, tel +30 2106792473, fax +30 2106726126, email ksaiti@ametro.gr. Visit http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=223942-2017 and http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=262099-2017. Ref.n. RFP_308_17. 28/17.