Addendum – 1: Contract–Phase II–DDC/P2C3/01: “Engagement of Detailed Design Consultant (DDC) for the works and services of the Detailed Design and Drawings for the Alignment, Civil, Structural, Architectural, MEP, TVS, VAC & Track Works Covering the Alignment and Underground Stations from Madhavaram Milk Colony to Thousand Lights Ch:(-) 383 To Ch: 15742, In Corridor 3 Of Phase- II of Chennai Metro Rail Project”.