On December 9th, 2011 at the town hall of Goussainville, two letters of intent for the feasibility study on the sector Talmouse under the Carex project were signed by MM. Alain Louis, Mayor of Goussainville, Mr François Cangardel, Director of Real Estate of Aéroports de Paris, Mr Hervé Dupont, Director General of the Public Development Establishment (EPA) Plaine de France and Mr Yanick Paternotte, Chairman of Roissy Carex and Chairman of Euro Carex.