The U.S. Army ERDC requires services to build and validate a Delft3D model for hydrodynamics and transport, with the work set aside for Small Businesses. The award will be a single purchase order to the lowest-priced, technically acceptable offeror. Key technical requirements include proficient expertise with Delft3D, numerical modeling of hydrodynamics and sediment transport, and experience with Adaptive Hydraulics, Linux high-performance computing, and coding in Python and MATLAB. Offerors must also meet security requirements to access ERDC's HPC machines. Requests for clarification must be submitted in writing to a specified email address by 2:00 PM CDT, 5 calendar days prior to the solicitation closing.