1__Statement_of_Work_-_Pixley_Wetland_Water_Recirc_Dated10_08_2026.pdf

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STATEMENT OF WORK

Wetland Water Recirculation System

Pixley National Wildlife Refuge October 8, 2026

1. GENERAL:

The Pixley NWR provides 755 acres of high-quality wetland habitat for migratory waterfowl and water birds. The refuge relies on three (3) deep ground water wells to irrigate and flood the wetlands to provide this habitat. Due to the increased demand in ground water, the refuge is adding a recirculation pump, so refuge management can conduct critical irrigations with this recirculated ground water that the refuge pumps from the 3 wells. This would help decrease the demand in ground water pumping during drought years while allowing the refuge to fulfill its purpose to provide waterfowl and water bird habitat for which it was established.

2. SCOPE OVERVIEW:

For this project a new PVC pipeline (approximately 1.2 miles) shall connect the lowest topographical point of the wetlands to the existing pipeline further to the east. A pump shall be placed at this lowest point (see attached map) to facilitate pumping the water up-slope to allow for water to recirculate.

For security purposes, contractor shall also install a 12’ tall, gated chain-link enclosure topped with barbed wire around the pump station.

2.1. Soil spoils from the excavation may be reused on the refuge property.

2.2. No restoration or seeding of disturbed ground will be required.

3. TASKS:

3.1. Base Bid Task 1 - Design: design the piping layout, diesel pump specifications and check-valve requirements, and the pump equipment security enclosure. The pump shall be a heavy duty, industrial grade centrifugal unit capable of moving up to 1,500 gallons per minute. Backflow prevention values will need to be installed to not force turbid water back into the well casings.

The existing pipeline is made of 15” diameter Schedule 80 PVC. Estimate the amount of soil to be removed for the pipe. Include one site visit, and three (virtual) meetings with the USFWS team.

DELIVERABLES:

3.1.1. Meeting Notes, Project Schedule

3.1.2. 50% Design Documents for USFWS review and approval

3.1.3. 90% Design Documents for USFWS review and approval

3.1.4. IFC (Issued for Construction) Documents

3.2. Base Bid Task 2 - Pipeline Construction – EAST SEGMENT: install the new pipeline from the pump station location and tie it to the existing buried 15” diameter PVC pipeline so the refuge can use existing water lines to distribute water for irrigations (see attached map). Anticipated depth of the new 15” pipeline is 4-5 feet below grade. During all ground disturbing activities, a contractor-provided tribal monitor must be present (backfill excluded). Include weekly check-in meetings with the USFWS in this task. If Option Task 3 and 4 is not accepted as part of this contract, provide water-tight closure plates at either end of the new pipeline.

DELIVERABLES:

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3.2.1. Meeting Notes, Daily Reports

3.2.2. Material Submittals

3.2.3. Pipe Installation

3.2.4. As-Built Drawings

3.3. Option Task 3 - Pipeline Installation – SOUTH SEGMENT: install the new pipeline from the pump station location and tie it to the existing buried 15” diameter PVC pipeline so the refuge can use existing water lines to distribute water for irrigations (see attached map). Anticipated depth of the new 15” pipeline is 4-5 feet below grade. During all ground disturbing activities, a contractor-provided tribal monitor must be present (backfill excluded). Include weekly check-in meetings with the USFWS in this task. If Option Task 4 is not accepted as part of this contract, provide water-tight closure plates at either end of the new pipeline.

DELIVERABLES:

3.3.1. Meeting Notes, Daily Reports

3.3.2. Material Submittals

3.3.3. Pipe Installation

3.3.4. As-Built Drawings

3.4. Option Task 4 – Pump and Pump Enclosure: Procure and install a diesel pump, back-flow preventer and associated plumbing. The Pump shall have a 100-gallon (approximately) diesel tank and associated fuel pump. Pump assembly shall include a canopy for weather protection and shall be mounted to a concrete slab. Pump shall be protected with a 8’ high chainlink fence enclosure, topped by 3 strands of barbed wire. Provide an access gate with a six-foot-wide clear opening for maintenance. Reference USFWS Above Ground Fuel Storage Checklist for additional requirements.

DELIVERABLES:

3.4.1. Meeting Notes, Daily Reports

3.4.2. Installed Pump, tank and back-flow preventer

3.4.3. Owner’s Manual, Warranty Information

4. PLACE/DELIVERY AND PERIOD OF PERFORMANCE:

The work will be performed at the Pixley NWR. The period of performance (POP) for the base bid tasks is 120 days.

5. INSPECTION AND ACCEPTANCE:

The finished product will be inspected once the contractor has indicated the work is complete. Although not all inclusive, the list of items that will be inspected to determine if the job is acceptable will include:

uniform connections of all fitting to the water system, quality of installation will show no leaks all work performed by the contractor, and water pressure test. Contractor is also responsible for clean-up of work area by removing all trash. Refuge Representative will inspect and accept job when completed.

6. GOVERNMENT FURNISHED EQUIPMENT OR MATERIALS/INFORMATION:

The government will provide contact information for the tribal monitor.

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7. AVAILABILITY:

All work must be completed during normal business hours, Monday through Friday, from 07:00 to 15:30.

No work during federal holidays.

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ADDITIONAL INFORMATION / ATTACHMENT #1

Satellite view of the wetland units and the existing pipeline

EXISTING

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Close-up of the new pipeline and pump station location.

East segment is approximately 3,700 feet long.

South segment is approximately 3,100 feet long.

At the corner of East to South a jog needs to be provided to avoid an existing water control structure (to remain).

Pi pe lin e

So ut h