C--D-B North Fume Replacement, Sacramento NWR

Solicitation / RFP / RFQ

This solicitation is for a Design-Build (D-B) Construction contract for the North Flume Replacement project located in Willows, CA. The magnitude of the project is estimated to be between $500,000 and $1,000,000. The contract type will be Firm Fixed-Price.

The scope of work includes:

• Site Investigation, A-E Scoping, Data Collection, Field Report, Technical Memorandum, and Design Development.

• 35% Design Development.

• Environmental Permitting Assistance and Submittal.

• 65% Construction Documents.

• 100% Construction Documents.

• Construction of the North Flume Replacement.

• Contract Type: Firm Fixed-Price Construction.

• Period of Performance: 540 calendar days from notice to proceed.

• Estimated Project Magnitude: $500,000 - $1,000,000.

• This is a two-phase Design-Build Selection Process.

• Phase 1: Non-cost proposals will be evaluated based on Recent Relevant Experience and Technical Approach. A maximum of 3 offerors will be selected for Phase 2.

• Phase 2: Selected offerors will submit proposals including Key Personnel, Price, Representations, Certifications, and a Bid Guarantee.

• Award will be made on a best-value, tradeoff basis.

• Proposal Submission Deadline: March 13, 2026, 10:00 AM PST.

• Questions Deadline: March 5, 2026, 10:00 AM PST.

• This Request for Proposal (RFP) is set aside for small business concerns.

• NAICS Code: 237990

• Small Business Size Standard: $45.0M

• A site visit is scheduled for March 3, 2026, at 10:00 AM PST. RSVP required.

• Proposals must be submitted electronically via email.

Form / Attachment / Pricing Sheet

This document is a Technical Report detailing a Master Plan for the Canal 26.2 Restoration at the Sacramento National Wildlife Refuge (NWR). It provides an evaluation of the existing canal and levee road system and prioritizes improvements for both the canal and water control structures (WCSs).

• Hydraulic Analysis: Evaluates the existing conditions and proposes alternatives to increase flow capacity to 90 cfs while maintaining a 1-foot freeboard.
• Alternatives Considered:
  • Alternative 1: Canal Vegetation Removal and WCS Cleaning.
  • Alternative 2: Canal Vegetation Removal and Replacement of 3 Siphons.
  • Alternative 3: Canal Vegetation Removal and Replacement of 5 Siphons.
• Access Road Evaluation: Assesses the condition of the gravel access road and recommends spot repairs, resurfacing, or reconstruction for year-round access.
• North Flume Analysis: Evaluates the structural deficiencies and repair needs of the North Flume.
• Feasibility Study: Compares alternatives based on physical conditions, protected habitat, lifecycle, risk reduction, and cost.
• Conclusions & Recommendations: Recommends Alternative 3 (replacing 5 siphons, removing vegetation and specific culvert crossings) as the optimum solution, along with spot repairs for the access road. It also recommends repair and reconstruction of the North Flume.

This report outlines the scope of work, technical requirements, and recommended solutions for the Canal 26.2 restoration. It provides critical information for potential bidders regarding the project's objectives, the specific improvements needed (e.g., siphon replacement, vegetation removal, road repairs), and the evaluation criteria used for selecting alternatives. The detailed analysis of hydraulic performance and feasibility studies will inform bidders about the technical challenges and expected outcomes of the project.

Form / Attachment / Pricing Sheet

This document is a technical drawing (Exhibit 2) detailing the design for a flume across the North Fork of Logan Creek. It provides specific dimensions, elevations, and construction details for the flume structure.

• Elevations: Includes upstream, downstream, and normal ground line elevations.
• Dimensions: Provides measurements for flume width, length, depth, and component sizes (e.g., riprap, stringers, anchor bolts).
• Sections: Illustrates cross-sections (A-A, B-B, C-C) and details of specific components like the flume end groove and lag screw connections.
• Materials: Mentions materials such as riprap, gravel cushion, planks, and galvanized bolts.
• Notes: Includes important disclaimers such as "THIS DRAWING MAY OR MAY NOT BE CURRENT AND IS FOR REFERENCE ONLY" and "CONTRACTOR MUST FIELD VERIFY EXISTING CONDITIONS PRIOR TO DESIGN, SHOP FABRICATION, ON-SITE WORK, CONSTRUCTION, AND INSTALLATION."

This drawing is critical for bidders to understand the physical scope and technical specifications of the flume structure. It informs design considerations, material requirements, and construction methods necessary for accurate bidding and project execution. Bidders must pay close attention to the "for reference only" and "field verify" notes.

Forms / Attachments / Pricing Sheets

This document provides the prevailing wage rates for various construction trades in California, as determined by the U.S. Department of Labor. It is intended to ensure fair wages are paid on federal and federally funded construction projects.

• General Decision Numbers: Identifies specific wage determinations (e.g., CA20260007).
• Construction Types: Specifies the types of construction covered (Building, Heavy, Highway).
• Counties: Lists the specific California counties to which the wage rates apply.
• Trades and Classifications: Details various construction trades (e.g., Asbestos Workers, Boilermakers, Bricklayers, Carpenters, Electricians, Laborers, Plumbers, Sheet Metal Workers, etc.) and their respective wage rates and fringe benefits.
• Modification Numbers and Dates: Indicates revisions to the wage determinations.
• Area Descriptions: Defines specific geographic areas within counties or regions for which different wage rates may apply.
• Footnotes and Premiums: Provides additional information on special pay rates, holiday pay, and working conditions.

Bidders must use these prevailing wage rates to accurately estimate labor costs for their proposals on relevant federal or federally funded construction projects. Failure to comply with these wage requirements can lead to penalties and debarment. Understanding these rates is crucial for developing a compliant and competitive bid.

Statement of Work (SOW) / Performance Work Statement (PWS)

This Statement of Work (SOW) details the requirements for design-build services to prepare construction documents, provide permitting, and construct the replacement of the North Flume at the Sacramento National Wildlife Refuge (NWR) in Willows, California.

• Design and install a fire-resistant, corrugated metal pipe (CMP) replacement flume with conveyance capacity meeting or exceeding the existing flume.

• Design and install two OSHA compliant, slip-resistant, and corrosion-resistant walkway surfaces with removable handrails for access over the spillway connection.

• Design and install stoplog slots and provide replacement wood stoplogs.

• Demolish, remove, recycle, and/or dispose of the existing flume infrastructure.

• Install erosion and sediment control measures, vegetation, and stabilization of disturbed areas.

• The structure must be designed for a minimum service life of 50 years, resist variable flows, prevent deterioration, and decrease maintenance.

• The project includes a 100% contractor turnkey installation, fully functional, and operational flume.

• Overall period of performance: 18 months.

• Design and permitting phase: within 6 months from Notice to Proceed (NTP).

• Construction/build phase: within 12 months from completion and acceptance of the design phase.

• All excavation activities must occur between May 1 and October 31.

• Project location: Sacramento National Wildlife Refuge, Willows, CA.

• Environmental Considerations: Measures to avoid adverse effects on giant garter snakes (GGS) and their habitat are detailed, including preconstruction surveys, timing of excavation (May 1 - Oct 31), habitat dewatering periods, and protocols for encountering GGS.

• Construction Vehicles: Speed limit of 15 mph on site; fueling and maintenance in designated areas with spill response supplies.

• Personnel: Must stop work and contact COR and refuge biologist if any snakes are encountered.

• Professional Engineer: Contractor's Architect-Engineer (A-E) must be a licensed Professional Engineer in California.

• Permitting: Contractor is responsible for obtaining all necessary permits.

• Working Hours: Monday-Friday, 7:00 AM to 4:30 PM, excluding Federal Holidays, unless otherwise approved.

• Government Furnished Information: USFWS will provide available drawings, reports, and other documents related to the North Flume.

• Contractor Furnished: Contractor must furnish all temporary facilities and utilities.

• Inspection and Acceptance: Work must comply with applicable federal, state, and local codes and industry standards.

Form / Attachment / Pricing Sheet

This document is a "Sources Sought" form used to gather information from interested and capable firms regarding their qualifications and interest in a potential future project. It is used to determine market capabilities and potential small business set-aside options.

• Firm Information: Requires Name, Point of Contact, Address, Phone Number, Email Address, and UEI Number.
• Size Status/SBA Certifications: Checkboxes for Small Business, Women Owned Small Business (WOSB), Economically Disadvantaged Women Owned Small Business (EDWOSB), HUBZone, Service Disabled Veteran Owned Small Business (SDVOSB), ISBEE, and Other (specify).
• Capability Statement: A section to provide a brief summary of capabilities or attach a capabilities page.

Interested firms must complete this form and submit it via email by January 14, 2026, at 11:00 AM Pacific Time. The submission should include the reference number (140FGA26R0001) in the subject line. No additional specifications or information are available, and no questions will be answered during this sources sought period. The form should be emailed to shanen_fox@fws.gov.

Solicitation / RFP / RFQ

This is a pre-solicitation notice for a Request for Proposal (RFP) from the U.S. Fish & Wildlife Service (USFWS) for Design-Build Services for the North Flume Replacement. The project involves preparing construction documents, obtaining permits, and performing construction for the replacement of the North Flume at the Sacramento National Wildlife Refuge (NWR) in Willows, California.

• Design-build services for the North Flume Replacement.

• Preparation of construction documents.

• Permitting.

• Construction of the North Flume replacement.

• The magnitude of construction is estimated between $500,000 and $1,000,000.

• A Firm Fixed Price award is contemplated.

• The procurement will follow FAR 36.3 - Two-Phase Design-Build Selection Procedures.

• Award will be made on a best-value, tradeoff basis, allowing tradeoffs among cost/price and non-cost factors.

• The solicitation will be posted to SAM.gov | Contract Opportunities around January 5, 2026.

• Evaluation of interested firms will be based on:

  • Recent Relevant Experience (Phase 1)
  • Technical Approach (Phase 1)
  • Key Personnel (Phase 2)
  • Price (Phase 2)

• The solicitation package will include Solicitation Forms (SF1449), Statement of Work, and other required attachments.

• This procurement is being solicited as a total small business set aside.

• The NAICS code is 237990, with a size standard of $45.0M.

• Contractors must be registered in the System for Award Management (SAM) to participate.

• Inquiries and questions must be submitted in writing via email to shanen_fox@fws.gov.

• The Contracting Officer is Shanen Fox.