Pre-Solicitation Notice The USIBWC intends to issue a Request for Proposal (RFP) for a design-build contract to construct a new building at the Nogales International Wastewater Treatment Plant (NIWTP) in Santa Cruz County, Arizona. The new facility will house advanced sludge dewatering and drying equipment, including polymer equipment, as part of the NIWTP's biosolids management upgrade. The project includes: Design and construction of a new building to accommodate the sludge dryer system and associated equipment. Demolition of the existing belt filter presses and related polymer system components (excluding concrete foundations, overhead structure, and electrical motor control centers). Relocation of an existing three-sided metal structure. All associated site work, utilities, permitting, and commissioning to deliver a fully operational, code-compliant, and ready-to-use facility. The final product shall be a fully commissioned, turn-key building with all required utilities (water, sanitary sewer, communications, electrical, fire protection, etc.) and site improvements, ready for immediate use upon completion. 2. Project Location Nogales International Wastewater Treatment Plant Santa Cruz County, Arizona (31°26'56.58"N, 110°57'49.33"W) 3. Procurement Approach Type: Design-Build (DB) Contract Structure: Firm Fixed Price Period of Performance: 365 calendar days after Notice to Proceed (NTP) Set-Aside: The Government anticipates a small business set-aside, subject to market research results. 4. Scope of Work Highlights Phase 1: Design Site investigation, surveying, geotechnical investigations, and design development. Preparation of construction documents, technical specifications, and all required reports. Coordination with stakeholders and regulatory agencies. Phase 2: Construction Site preparation, demolition, and relocation activities. Construction of the new sludge dryer building and installation of all required systems. Quality control testing, commissioning, and project closeout. Compliance: All work must comply with federal, state, and local codes, including NEPA, OSHA, ADA/ABAAS, and applicable environmental and safety regulations. The contractor is responsible for all required permits and coordination with utility providers. 5. Submission Requirements (When Solicitation is Issued) Interested offerors will be required to submit: Qualifications and relevant experience with similar design-build projects. Technical approach and project management plan. Past performance information. Price proposal. 6. Anticipated Timeline Pre-solicitation Notice: June 2026 Solicitation Release: On or about July 16, 2026 Site Visit: To be announced in the solicitation Proposal Due Date: Approximately 30 days after solicitation release 7. Additional Information This notice is not a request for proposals . The solicitation, specifications, and drawings will be made available on SAM.gov. All interested parties are encouraged to monitor SAM.gov for updates. …