SOW_Revised_031026_SNWR_North_Flume_Redacted_0002.pdf

Statement of Work Design-Build Services for North Flume

U.S. Fish and Wildlife Service Sacramento National Wildlife Refuge Page 1 of 7

STATEMENT OF WORK

Sacramento National Wildlife Refuge

Design-Build Services for the North Flume Replacement March 2026

1. GENERAL

1.1. The US Fish and Wildlife Service (USFWS) requests design-build services to prepare construction documents, provide permitting, and construction for the replacement of the North Flume at the Sacramento National Wildlife Refuge (NWR) in Willows, California.

Performance Period: The overall period of performance is 24 months. 35% Design and permitting phase (Task 1-3) shall be completed and approved within twelve (12) months from NTP. Construction/build phase shall be completed within twelve (12) months from completion and acceptance of Task 1-3. All excavation activities must occur between May 1 and October 31. Project constraints are not expected, but unforeseen delays may be considered for performance period adjustment if not caused by contractor; these potential requests must be submitted with proof to Contracting Officer.

1.2. Construction projects occurring on lands within the Sacramento National Wildlife Refuge Complex are to be evaluated for inclusion under the programmatic consultation.

To the maximum extent practicable, the North Flume project will be authorized under the Sacramento National Wildlife Refuge Complex Biological Opinion and will be designed and implemented in such a way as to avoid adverse effects on giant garter snake (GGS) and on their habitat. The site is within the current known range of federally and state listed threatened GGS and the Refuge biologist believes that GGS may occur on the site.

The appropriate avoidance measures listed below will be taken:

1. In construction areas a USFWS biologist will conduct a preconstruction survey for

GGS in suitable potential habitat within two (2) days prior to initiating or restarting construction after a lapse of more than two (2) weeks. The USFWS biologist will mark habitat locations as Environmentally Sensitive Areas to be avoided by all construction personnel. The Contractor will coordinate with the COR at least five (5) business days prior to initiating or restarting construction to schedule the USFWS biologist preconstruction survey.

2. All excavation activities within GGS habitat will generally be conducted between May 1 and October 31. Direct mortality can be decreased during this time as they exhibit an active ability to respond to environmental conditions; and thus, are expected to migrate away from the project activities. Construction (especially excavation) poses more danger to GGS during their inactive period due to their habit of occupying underground burrows or crevices.

3. Areas that require dewatering and can be dewatered will remain dry for a minimum of two (2) weeks prior to construction. Any dewatered habitat will remain dry for at least 15 consecutive days prior to excavating or filling of the dewatered habitat.

4. If a GGS is found within the project area while heavy equipment is in use, the

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USFWS biologist (or the biologist’s designee) will suspend construction work until the GGS has left the area. GGS should be allowed to escape on their own, and preferably without handling.

5. Construction vehicles will observe a speed limit of no greater than 15 miles per hour on the project site.

6. Fueling and maintenance of vehicles and equipment will occur only in designated areas and with proper spill response supplies.

7. If the Contractor encounters snakes of any type, all personnel must stop work in the area and contact the COR and refuge biologist to ensure proper protocol is being followed.

2. SCOPE

2.1. General: The North Flume is located in the North Canal, which runs along the northern boundary of the Sacramento NWR. The North Flume is currently unable to perform as intended due to structural deficiencies including large cracks in concrete structures and potential undermining leading to bypass flow. Exhibit 1 – 1954 Proposed Flume Across North Fork Logan Creek is provide additional information on the existing North Flume.

Exhibit is provided for reference purposes only. The Contractor must field verify all information.

The Contractor will complete a site investigation, prepare design plans and specifications, provide environmental permitting, and construction services for the replacement of the North Flume, adjacent abutments, spillway connection to Logan Creek, and surrounding earthwork. The Contractor’s responsibility includes but is not limited to the following design and construction requirements:

• Design and install a replacement flume with a conveyance capacity that meets or exceeds that of the existing flume. The replacement flume must be fire-resistant corrugated metal pipe (CMP) coated to withstand corrosive environments as approved by Contracting Officer’s Representative (COR). Alternative materials may be considered by the COR in coordination with the Project Leader and Refuge Manager.

• Design and install two OSHA compliant, slip-resistant, and corrosion-resistant, walkway surfaces and associated removable handrails. These walkway surfaces must allow for Refuge staff to traverse over the spillway connection to Logan Creek and upstream of the North Flume CMP for future maintenance purposes.

• Design and install stoplog slots and provide replacement wood stoplogs to meet or exceed the functionality of the existing flume.

• Demolition, removal, recycling, and/or disposal of the existing flume infrastructure.

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

• Structure shall be designed to provide a minimal service life of 50 years, resist forces from variable flows, prevent deterioration and decrease maintenance.

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Design and construction services will result in a 100% contractor turnkey installation, fully functional, and operational flume. The Contractor’s Architect-Engineer (A-E) selected under subcontract or in-house to the Contractor must be a licensed Professional Engineer in the state of California.

The Contractor will hold bi-weekly project status update meetings during design and permitting following the project kick-off meeting. The Contractor is responsible for the preparation and distribution of the agenda, meeting minutes, and action item list.

Task 1 – Site Investigation, A-E Scoping, Data Collection, Field Report - Technical Memorandum, and Design Development

Perform a site investigation for the preparation of the A-E design and permitting services.

Design services shall include survey, civil, structural, and permitting as required. The A- E will verify and discuss coordination strategies with applicable Federal and State agencies regarding permits, cultural resources, and other project participants through the COR and Project Leader. The A-E will work with the COR and Project Leader to identify USFWS directorates and contacts participating in this project, descriptions of required functional requirements, and description of operations for the North Flume.

The potential Task Breakdown is as follows:

• Review existing drawings, reports, and photographs (if available) for Sacramento

NWR provided at or following solicitation.

• Perform a post award site investigation with the objective of understanding and evaluating the condition of the North Flume, adjacent abutments, spillway connection to Logan Creek, and surrounding earthwork.

• Prepare and submit a Field Report - Technical Memorandum detailing condition assessment and recommendations to replace the North Flume, adjacent abutments, spillway connection to Logan Creek, and surrounding earthwork. The A-E will also prepare a topographic survey background base map, and a permit registry of all federal, state, county, and local permits required for the project activities.

Deliverables:

• Electronic copy of the Field Report – Technical Memorandum

• Electronic copy of the Topographic Survey Background Base Map

• Electronic copy of the list of all Federal, State, County, and Local permits required for the project activities (Permit Registry)

Task 2 – 35% Design Development

The A-E will prepare responses and conduct a comment review meeting to discuss the USFWS review notes received on the Task 1 deliverable. After receiving approval of the Field Report – Technical Memorandum (Task 1), the A-E will prepare 35% Design Documents consisting of drawings, plans, details, outline of specifications, engineer’s opinion of possible construction schedule, and a 35% permit registry. The A-E will

U.S. Fish and Wildlife Service Sacramento National Wildlife Refuge Page 4 of 7 conduct informal consultation meetings with the USFWS and permitting agencies to review the design and solicit comments on the 35% design development deliverable. The objective of this deliverable is to define the size, requirements, and character of the project.

Deliverables:

• Electronic copy of the responses to the USFWS review notes received on the Task

1 deliverable

• Electronic copy of the 35% Design Documents (drawings, plans, details, and outline of specifications)

• Electronic copy of the Engineer’s Opinion of Probable Construction Schedule

• Electronic copy of the 35% Permit Registry

Task 3 – Environmental Permitting Assistance and Submittal

Using the 35% design submittal (Task 2) as a basis, provide a detailed project description (DPD) and ordinary high water mark delineation survey. A clear comprehensive project description will be required. The project description will outline, in detail, the project work activities and timelines. The project description will, at a minimum, include estimates on noise levels, the amount and type of vegetation removal, the amount of fill used, the amount of sedimentation and turbidity from the proposed project, and impacts on existing threatened and endangered species in Logan Creek and critical habitat areas.

The ordinary high water mark delineation survey should include, at a minimum, an introduction, project location, background, purpose and need, and ordinary high water mark delineation.

The A-E will develop, prepare, and submit permit applications and supporting documents to the regulatory agencies for review and approval / conditional approval. Organize the identified permits in the 35% permit registry. Develop and prepare the permit applications and permit support documents for all federal, state, county, and local permits. Submit the finalized permit applications and permit support documents (to include the DPD and/or elements of the DPD) to the USFWS Project Leader for signature. Obtain the USFWS signature copies of the applications and submit the executed signature copies of the permit applications and permit support documents to each federal, state, county, and local regulatory agency for review and approval / conditional approval and pay all permit fees, processing fees, and plan / specification review fees. Function as the designated owner’s representative in completing and coordinating with permitting agencies for applications and permit review. Participate in Section 7 consultation meetings as required during the regulatory agency review period.

For National Environmental Policy Act (NEPA), the project is anticipated to qualify for a categorical exclusion (CATEX). CATEX documentation will be completed by the USFWS Project Leader.

Deliverables:

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• Electronic copy of the DRAFT Ordinary High Water Mark Delineation Survey.

• Electronic copy of the DRAFT Detailed Project Description.

• Electronic copy of the FINAL Detailed Project Description and Ordinary High

Water Mark Delineation Survey.

• Electronic copy of the DRAFT Permit Applications and Support Documents for all Federal, State, County, and Local Permits.

• Electronic copy of the FINAL Permit Applications and Support Documents for all

Federal, State, County, and Local Permits.

• Electronic copy of the Approval of Permit Applications and Support Documents for All Federal, State, County, and Local Permits received from Permitting Agencies (Include Permitting Office Review Notes / Comments and Conditional Requirements)

Task 4 – 65% Construction Documents

The A-E will prepare responses and conduct a comment review meeting to discuss the USFWS review notes received on the Task 2 deliverable. After receiving approval of the 35% Design Development (Task 2) and receiving permit approval / conditional approval (Task 3), the A-E will prepare and submit 65% Construction Documents. The 65% Construction Documents consist of drawings, plans, details, specifications, and an engineer’s opinion of possible construction schedule. The A-E will conduct informal consultation meetings with USFWS and permitting agencies to review the design and solicit comments. The A-E will develop the 65% Construction Documents after responding to and closing out USFWS review notes concerning the 35% Design Development.

Deliverables:

• Electronic copy of the responses to the USFWS review notes received on the Task

2 deliverable

• Electronic copy of the 65% Construction Documents (drawings, plans, details, and specifications)

• Electronic copy of the Engineer’s Opinion of Probable Construction Schedule

• Electronic copy of the 65% Permit Registry

Task 5 – 100% Construction Documents

The A-E will prepare responses and conduct a comment review meeting to discuss the USFWS review notes received on the Task 4 deliverable. After receiving approval of the 65% Construction Documents (Task 4) the A-E will prepare and submit draft 100% Construction Documents consisting of drawings, plans, details, specifications, design calculations and an engineer’s opinion of possible construction schedule. The A-E will develop the draft 100% Construction Documents after responding to and closing out USFWS review notes concerning the 65% Design Development. The A-E will prepare and submit the final 100% Construction Documents after soliciting, receiving, and addressing final comments from the USFWS on the draft 100% Construction Documents.

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Deliverables:

• Electronic copy of the responses to the USFWS review notes received on the Task

4 deliverable

• Electronic copy (PDF) of the draft 100% Construction Documents (drawings, plans, details, and specifications)

• Electronic copy (PDF and AutoCAD) of the signed and sealed final 100%

Construction Documents (drawings, plans, details, and specifications)

• Electronic copy of the Engineer’s Opinion of Probable Construction Schedule

• Electronic copy of the 100% Engineering Design Calculations for Civil, Water

Resources, Environmental, and/or Structural Engineering Design Elements including, but not limited to flume conveyance capacity

• Electronic copy of the 100% Submittal and Permit Registry

Task 6 – Construction of the North Flume Replacement

Mobilize and demobilize all labor, materials, equipment, personal protective equipment (PPE), tools, and resources onto and off the project site. Provide construction services for the replacement of the North Flume, adjacent abutments, spillway connection to Logan Creek, and surrounding earthwork to result in a 100% contractor turnkey installation, fully functional, and operational flume. The Contractor is responsible for obtaining all necessary permits to result in a successful project delivery.

Prior to the commencement of construction, a preconstruction meeting will be held at a mutually agreed time and place. The meeting must be attended by the Contractor’s Project Manager, Superintendent, and subcontractors as the Contractor deems appropriate. The Contractor will hold weekly project status update meetings during construction. The Contractor is responsible for the preparation and distribution of the agenda, meeting minutes, and action item list. The Contractor will provide daily construction reports including progress photos and documentation.

Deliverables:

• Electronic copy of the preconstruction meeting agenda and minutes

• Electronic copy of daily construction reports

• Electronic copy of the project schedule

• Electronic copy of the Schedule of Values

• Electronic copy of the Submittal Log and product submittals including warranties

• Final Product Operations and Maintenance Manuals (O&M)

• Completed construction in accordance with approved design documents (Task 5)

• Closeout Items to include as-built drawings

3. GOVERNMENT FURNISHED EQUIPMENT/INFORMATION

3.1. The USFWS will provide the following items related to this project: Available drawings, reports, other documents related to the North Flume.