Specifications include, but are not limited to: preparation of the design and design support during construction of the Authority’s track system, sub-ballast layer, OCS, along-track cable containment, across-track ducts, access walkways, fencing, and drainage for the 171- mile Early Operating Segment (EOS) from Merced to Bakersfield.; The Work also includes responsibility for managing technical and non-technical interfaces with Interfacing Contractors such as the civil design consultants, civil construction contractors, future track and overhead contact system (OCS) construction contractor (Track/OCS Contractor), systems design and construction contractor (Systems Contractor), facilities and station design consultants, facilities and station construction contractors, trainsets manufacturer (Trainsets Contractor), independent cost estimator consultant, independent safety assessor consultant, and the integration support consultant, following the Authority Program Integration Management requirements.