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This is a Statement of Work for Fermi Forward Discovery Group, LLC dated April 22, 2026, for the Central Utility Building Purge Unit Replacement for Chiller No. 5 at Fermilab in Batavia, Illinois (Project 60, Task 60.03.09). The work will be performed in Kane County, Illinois at the Central Utilities Building and is coordinated by Technical Point of Contact Pollock, J.P., with Subcontracts Administrator Caroline Jones.

The Subcontractor shall provide all labor, supervision, management, materials, tools, equipment, transportation, and incidental services necessary to remove the existing defective purge unit and install a new one on Chiller No. 5. Specific deliverables include isolation of the chiller using lockout/tagout procedures, recovery and storage of refrigerant per environmental regulations, removal of existing purge unit and piping, installation of new purge piping and isolation valves, installation of the new purge unit, integration with control systems, system evacuation and leak testing, refrigerant recharge to manufacturer specifications, and startup and monitoring until stable operation is achieved. Work must comply with all applicable federal, state, and local regulations, Fermilab site-specific safety procedures, and manufacturer specifications. Standard working hours are Monday through Friday beginning at approximately 1:00 p.m. Central Time, with off-hours work requiring prior approval. Completion criteria require Chiller No. 5 to be fully operational and stable with no leaks detected, all lockout/tagout devices properly removed, and required documentation submitted. Deliverables include confirmation of completion, leak test results, documentation of refrigerant recovery and recharge quantities, and manufacturer documentation for the installed purge unit.

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SOW DATE: 4/22/2026

CONTRACTING ENTITY: Fermi Forward Discovery Group, LLC PROJECT TITLE: Central Utility Building Purge Unit Replacement for Chiller No. 5, Batavia, Illinois

PROJECT: 60

TASK: 60.03.09

TECHNICAL POINT OF CONTACT: Pollock, J.P.

SUBCONTRACTS ADMINISTRATOR: Caroline Jones COUNTY THAT WORK WILL BE COMPLETED IN: DuPage☐ Kane☒ Fermilab County Line

INTRODUCTION

Fermi National Accelerator Laboratory (Fermilab), operated by Fermi Forward Discovery Group LLC (FermiForward), for the U.S. Department of Energy (DOE) Contract No. 89243024CSC000002, is the nation’s premier particle physics and accelerator laboratory. Located in Batavia, Illinois, Fermilab is dedicated to advancing scientific discoveries related to in matter, energy, space and time.

FermiForward requires a Subcontractor to replace the purge unit with Chiller No. 5 located in the Central Utility Building (CUB) in Batavia, Illinois. The objective is to restore the chiller to full operational status through removal of the existing defective purge unit, installation a new purge unit and completion of all required testing and commissioning activities.

SCOPE OF WORK

The Subcontractor shall provide all labor, supervision, management, materials, tools, equipment, transportation and all incidental services necessary to remove, replace, test and return Chiller No. 5 to operational condition.

The Subcontractor shall perform the following:

1. Isolate Chiller No. 5 in accordance with lockout/tagout (LOTO) procedures.

2. Recover and properly store refrigerant in approved storage vessels in accordance with applicable environmental regulations.

3. Remove the existing purge unit and associated piping.

4. Install new purge piping, as required to support the new unit.

5. Install isolation valves, as required for proper operation and maintenance.

6. Install the new purge unit.

7. Integrate and connect the purge unit to Chiller No. 5 control systems.

8. Evacuate the chiller system using appropriate vacuum equipment.

9. Perform leak testing to verify system integrity.

10. Recharge the system with refrigerant to manufacturer specifications.

11. Remove lockout/tagout devices following completion of work and verification of safe operation.

Statement of Work Infrastructure Services Division

12. Start up Chiller No. 5 and monitor performance until stable operating conditions are achieved.

PERFORMANCE REQUIREMENTS

All work shall be performed in accordance with applicable federal, state and local regulations, including environmental and safety requirements.

The Subcontractor shall comply with Fermilab site-specific safety procedures, including lockout/tagout and refrigerant handling requirements.

All installed equipment shall be installed in accordance with manufacturer specifications and industry standards.

The Subcontractor shall ensure the system is leak-free and fully operational prior to completion.

PLACE OF PERFORMANCE

Work will be performed at Central Utilities Building, Fermilab, Batavia, Illinois.

SCHEDULE

Work Schedule and Coordination

The Subcontractor shall coordinate all on-site activities with the FermiForward Technical Point of Contact.

The Subcontractor shall schedule work to minimize disruption to ongoing operations.

All site access is subject to Fermilab security and safety requirements.

Working Hours

Standard working hours are Monday through Friday, beginning at approximately 1:00 p.m.

Central Time.

Work outside these hours requires prior approval from the Technical Point of Contact.

Completion and Acceptance Criteria Work shall be considered complete when all required services have been performed and the following conditions are met:

Chiller No. 5 is fully operational and stable No leaks are detected All lockout/tagout devices have been properly removed All required documentation has been submitted and accepted by FermiForward Technical Point of Contact and accepted by FermiForward

DELIVERABLES

The Subcontractor shall provide the following upon completion:

Confirmation that installation is complete and system is operational Leak test results Documentation of refrigerant recovery and recharge quantities Manufacturer documentation for installed purge unit (if not previously provided)

(End of Document)

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