Negotiated procedure, deadline 22.03.2010, for low-tension studies and works (lot TS01) for the Porte d'Orleans-Montrouge extension on Line 4. Contract duration 22 months. Contact Mrs Isabelle Forn at RATP in Paris, tel +33 158769926, fax +33 158771381, e-mail isabelle.forn@ratp.fr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=061974-2010. 10/10.