The United States Section of the International Boundary and Water Commission (USIBWC) is seeking a contractor to replace the hydraulic system for Penstock #5 at Amistad Dam in Texas. The project includes site preparation, inspection of all systems and structures, replacement of the hydraulic system, disposal of debris and construction waste, quality control testing, and manufacturing of a new penstock bulkhead. The contractor must work within specific site constraints, including limited working hours and load capacity. The project is estimated to be completed within 485 calendar days and has a firm-fixed price contract. Key considerations for the contractor include: • Site preparation and inspection of all systems and structures • Replacement of the hydraulic system and manufacturing of a new penstock bulkhead • Disposal of debris and construction waste • Quality control testing • Coordination with the Amistad Field Office and compliance with site constraints