General Civil Maintenance of 9 nos. of Metro Stations (i.e. Koteshwar Station, Vishwakarma Station, Tapovan Circle Station, Narmada Canal Station, Koba Circle Station, Juna Koba, Koba Gam, Sachivalaya & Sector-10 including Viaduct from Koteshwar Station to GNLU Station and Viaduct of Sector -1 Station to Sachivalaya Station) of Ahmedabad Metro Rail Project Phase-2