** Note - the table of contents in this solicitation attachment is incorrect. The attachments included in this PIEE solicitation post are the correct attachments for this requirement. A forthcoming amendment with the correct table of contents will be posted.**Scope of this project is the repair of approximately 2,500 LF by replacement, including repairs of ties, rails, turnouts, rail crossings and other track material for multiple rail curves on the tidal side of the installation at Military Ocean Terminal, Concord (MOTCO). The base bid package includes repair by replacement of curves 9 and 10 with curvature less than 12 degrees. Tracks will be constructed per standards in UFC 4-860-01FA and American Railway Engineering and Maintenance of Way Association (AREMA). The following work will be included as contract options:- UXO clearance and transportation,- UXO blow-in-place,- Mission stand down, - Wetland mitigation credit purchase