Estuary Hydrodynamic and Oil-Particle Aggregate (OPA) Modeling Consultant

This subcontract, issued by the Department of the Interior's Office of Acquisition Grants-Denver, seeks a consultant to provide technical assistance and scientific consulting for USGS estuary projects. The selected party will focus on reviewing open-source hydrodynamic and spill models, defining model boundaries for the Bad River estuary, and offering expert guidance on the formation, transport, and deposition mechanisms of Oil-Particle Aggregates. All work must be performed using open-source hydrodynamic models and technical reporting software, with final deliverables consisting of technical reports, fact sheets, and model boundary definitions. The opportunity is designated as a total Small Business Set Aside under NAICS code 541620. Due to the nature of the work, the consultant must undergo a background investigation in accordance with FISMA form A08. Interested parties must respond by September 18, 2026.