Invitation to tender by negotiated procedure, deadline 02.04.2012, for safety certification (OQA) for Saint Lazare-Saint-Ouen 14th metro line extension in Paris, comprising a 5.6 km-long tunnel with 4 new stations. Contract duration 66 months. Contact Isabelle Forn at RATP in Paris, tel +33 158769-926, fax -468, e-mail isabelle.forn@ratp.fr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=079344-2012. 11/12.