Open invitation to tender, deadline 21.07.2015, for further preliminary studies about construction of Line 15 East from Saint-Denis Pleyel to Champigny Centre for RTPGP (Reseau de Transport Public du Grand Paris). Duration of contract 48 months. Contact Societe du Grand Paris, att.n Mrs Legrand Dominique, Saint-Denis, tel +33 182462000, fax +33 182462031, website https://www.marches-publics.gouv.fr/?page=entreprise.EntrepriseAdvancedSearch&AllCons&refConsultation=247781&orgAcronyme=s2d. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=205785-2015. Ref. n. 2015AOO010. 25/15.