D-B North Fume Replacement, Sacramento NWR

Quick Summary

The U.S. Fish and Wildlife Service (USFWS), under the Department of the Interior, has issued a Solicitation for a Design-Build (D-B) Construction contract for the North Flume Replacement project at the Sacramento National Wildlife Refuge (NWR) in Willows, California. This project, estimated between $500,000 and $1,000,000, is a Total Small Business Set-Aside. Proposals are due by March 13, 2026, at 10:00 AM PST.

Scope of Work

This Design-Build effort requires comprehensive services including:

• Design & Permitting: Site investigation, A-E scoping, data collection, field reports, technical memoranda, and design development (35%, 65%, 100% construction documents). The contractor is responsible for environmental permitting assistance and submittal. The A-E must be a California-licensed Professional Engineer.
• Construction: Demolition and removal of the existing flume infrastructure, followed by the design and installation of a new fire-resistant, corrugated metal pipe (CMP) flume. The new flume must meet or exceed existing conveyance capacity and have a minimum 50-year service life.
• Ancillary Structures: Design and installation of two OSHA-compliant, slip-resistant walkways with removable handrails over the spillway connection, and stoplog slots with replacement wood stoplogs.
• Site Restoration: Installation of erosion and sediment control measures, vegetation, and stabilization of disturbed areas.
• Turnkey Project: The project requires a 100% contractor turnkey installation, ensuring a fully functional and operational flume.

Contract Details

• Contract Type: Firm Fixed-Price Construction.
• Estimated Magnitude: $500,000 to $1,000,000.
• Set-Aside: Total Small Business Set-Aside (FAR 19.5).
• NAICS Code: 237990 (Other Heavy and Civil Engineering Construction).
• Small Business Size Standard: $45.0 Million.
• Period of Performance: 540 calendar days from Notice to Proceed (NTP). This includes a design and permitting phase (within 6 months from NTP) and a construction/build phase (within 12 months from design acceptance).

Submission & Evaluation

This is a two-phase Design-Build Selection Process:

• Phase 1 (Non-Cost): Proposals will be evaluated on Recent Relevant Experience and Technical Approach. A maximum of three offerors will be selected to proceed to Phase 2.
• Phase 2: Selected offerors will submit proposals including Key Personnel, Price, Representations, Certifications, and a Bid Guarantee.
• Award Basis: Best-value, tradeoff basis.
• Proposal Submission Deadline: March 13, 2026, 10:00 AM PST.
• Questions Deadline: March 5, 2026, 10:00 AM PST.
• Submission Method: Electronically via email to shanen_fox@fws.gov.

Special Requirements & Notes

• Site Visit: A site visit is scheduled for March 3, 2026, at 10:00 AM PST. RSVP is required.
• Environmental Considerations: Strict protocols for Giant Garter Snakes (GGS) are in place, including preconstruction surveys and specific excavation timing (May 1 - October 31).
• Wage Rates: Bidders must adhere to prevailing wage rates for California construction trades as detailed in Attachment 4.
• Reference Documents: Exhibit 1 (Canal Master Plan Technical Report) and Exhibit 2 (Flume Drawing) provide critical technical context, though Exhibit 2 is for reference only and requires field verification.