The Coastal and Hydraulics Laboratory (CHL) located within the Engineering Research and Development Center (ERDC), Vicksburg, MS supports other programs, agencies, and missions with the assistance of DPW in building physical models to meet critical mission research, design validations, discover any issues that may arise within the design and/or develop any possible required solutions to mitigate challenges facing a particular structural improvement or new structure being developed. These McNary Lock and Dam Physical Model supplies will support the model construction in performing the aforementioned tasks. See attached Description of Requirement for additional details.