The Mission Includes All Of The Catenary Studies Within The Framework Of The Construction Of The New Railway Station And The Adaptations Of The Track Plan With Detail: - Studies To Be Carried Out According To Catenae Principle V 200 Sti Sncf And V 200 Sti Sncf - Establishment Of The Aps Plans, - Establishment Of The Apd Plans (Catenary, Eale, Return Circuit), - Study Of Study Execution, - Assistance For Sti Certifications, - Assistance, Requests Specified By Cfls. This List Is Not Exhaustive, Other Services Can Be Envisaged During The Mission.