The Department of the Interior, specifically the U.S. Geological Survey (USGS), is planning to award a non-competitive purchase order for a Particle Image Velocimetry (PIV) system upgrade to LaVision, a company based in Ypsilanti, Missouri. The upgrade aims to enhance the existing two-dimensional PIV system at the USGS Columbia Environmental Research Center (CERC) to a stereo and three-dimensional PIV system, which is crucial for advanced particle tracking and measurement capabilities in ecohydraulics research. This procurement is essential as the proprietary hardware and software from LaVision are uniquely suited to integrate with the current system, ensuring compatibility and avoiding the significant costs associated with purchasing an entirely new system. Interested parties can direct inquiries to Rafael Anderson at rlanderson@usgs.gov, with the anticipated delivery date set for 30 days after receipt of the order.