The United States Department of Agriculture (USDA), through its Agricultural Research Service (ARS), is soliciting proposals for modifications to Building 320 at the Southwest Watershed Research Center in Tucson, Arizona. The project entails significant construction work, including the replacement of roofing systems, ridge vents, and gutters, with an estimated contract value between $250,000 and $500,000. This procurement is crucial for maintaining the facility's operational integrity and ensuring compliance with federal standards, including environmental considerations and labor laws. Interested contractors must submit their proposals by July 9, 2025, and direct any inquiries to Theodore Blume at the provided email address, ensuring adherence to all specified requirements and deadlines.