Cooling Towers SOWV2.pdf

COOLING TOWER

PROJECT: #

FORT YUMA SERVICE UNIT

PREPARED BY:

FORT YUMA, WINTERHAVEN, CALIFORNIA

3 October 2025

STATEMENT OF WORK

PROJECT GENERAL REQUIREMENT: The Contractor shall provide the government with a conceptual package that includes the following components:

Construction schedule from Notice to Proceed through Completion, in Microsoft Word, Excel, or Primavera format.

List project submittals on provide Excel form. Update and review at construction meetings, or every two weeks.

Complete Fort Yuma ICRA Permit prior to start of Construction.

All necessary permits, notifications, and safety documents prior to start of construction.

Final Statement of Work in Microsoft Word format for record.

PROJECT DESCRIPTION: The SOW outlines the work needed to remove and replace existing air inlet louvers and frames on three (3) cooling towers (Cooling Tower Manufacturer: Evapco ESWB 12’ Wide Units) at the Fort Yuma Health Care Center in Winterhaven, CA. The project includes all labor, materials, and coordination necessary to complete the demolition, fabrication, installation, and restoration required to return the cooling towers to full and proper operation.

DESIGN POLICY AND CRITERIA: The project design and installation shall comply with the most current editions of the following codes and standards:

International Building Code (IBC) International Mechanical Code (IMC) International Plumbing Code (IPC) (where applicable) National Electrical Code (NEC) (for any incidental electrical work) Occupational Safety and Health Administration (OSHA) regulations IHS Facility Design Guidelines NFPA 90A90A (Air Distribution Systems)

NFPA 99

NFPA 101

PROJECT REQUIREMENTS

1. DIVISION 01 – GENERAL REQUIREMENTS

1.1. Contractor shall submit a schedule of work.

1.2. Contractor shall schedule a pre-construction conference with the IHS COR prior to mobilization.

1.3. Contractor shall perform a pre-work inspection of the work area. Verifying existing dimension and conditions of work area.

1.4. Contractor shall not install any products containing PCB’s.

1.5. Working hours for the Contractor: Monday to Friday, between the hours of 8:00 a.m. and 5:00 p.m

1.6. Work shall be performed to the satisfaction of the CO.

1.7. Contractor shall provide Govt w/ a warranty certificate for any products with a warranty of two or more years.

1.8. Contractor shall provide written notification to the Contracting Officer (CO) two weeks prior to the

1.9. commencement of work.

1.10. Contractor shall maintain a safe work area and shall remove all construction rubble from the work site to a

1.11. Contract Authorized onsite construction dumpster or remove from Fort Yuma on a daily basis.

1.12. SDSs, proposed container sizes and rates of use must be submitted to the Fort Yuma Safety Officer (via the

CO) for review and approval at least 15 duty days prior to any materials being brought onto any portion of the installation. The Contractor is required to have and maintain Material Safety Data Sheets (SDSs) on all materials that are used. The Contractor is responsible for training his employees to properly use any authorized hazardous materials and properly handle hazardous wastes. A monthly chemical usage report will be submitted to the Fort Yuma Safety Officer (via the COR) that lists the amount of materials (with associated SDSs) used and locations of usage. After completion of the project, a final total chemical usage report will be submitted to the Fort Yuma Safety Officer (via the COR) that lists the amount of materials (with associated SDSs) used and locations of usage. **Submittal required**

1.13. All contractor-generated hazardous waste will be removed from the base the same day it is generated, and disposed of offsite. The contractor is responsible for all hazardous waste characterization and proper disposal.

This shall be done in a manner to conform to the State of CA Health and Sanitation Codes. In no manner will the Government be responsible for disposals. No hazardous waste or excess materials will be left behind on IHS property after the conclusion of the project.

1.14. Contractor shall be knowledgeable of, and comply with all applicable Federal, State, and local regulations and requirements regarding environmental protection. The Contractor is solely responsible for compliance with EM 385-1-1 Safety & Health Requirements Manual and OSHA standards for the protection of their employees. The Contract Manager shall ensure specific safety requirements in the Indian Health Manual (IHM) standards are complied with by Contractor Personnel when non-compliance would clearly present the potential to harm or damage government resources. IHS is not responsible for ensuring that Contractors comply with "personal" safety requirements that do not present the potential to damage government resources.

1.15. Contractor shall complete and follow all instructions on FYCC Policy for Hot Work Procedures. A copy of The Hot Work Permit and instructions must be on the premises at all times, while work is being performed.

When welding, cutting, brazing or use of any open flame device is to be used, a Hot Work Permit must be obtained from the Facility Manager prior to beginning such work. During such work, a fully charged and operable fire extinguisher, appropriate for the task, shall be provided by the Contractor. Contractor shall process form for approval.

1.16. Contractor shall provide and maintain all temporary facilities required for execution of the work, including but not limited to:

1.16.1. Temporary power, water, and sanitation facilities in compliance with all health and safety codes.

1.16.2. Site security measures to protect Government property, personnel, and the public.

1.16.3. Temporary fencing, signage, and barriers where required to maintain a safe project site.

1.16.4. Contractor shall control dust, noise, and debris to minimize impact on adjacent operations and personnel. Work that creates excessive noise or vibration shall be coordinated in advance with the COR.

1.16.5. Temporary fencing, signage, and barriers where required to maintain a safe project site.

1.17. Contractor shall control dust, noise, and debris to minimize impact on adjacent operations and personnel.

1.17.1. In patient-care and occupied areas, Contractor shall install airtight dust barriers (e.g., poly sheeting or rigid partitions) to fully separate the construction zone from active spaces.

1.17.2. Negative air machines with HEPA filtration shall be used where dust migration may impact patients, staff, or sensitive equipment.

1.17.3. Contractor shall coordinate with the COR to establish entry/exit routes, maintain clean pathways, and use sticky mats or similar controls at work zone entrances to limit dust tracking.

1.17.4. Noisy operations shall be scheduled outside of patient rest hours whenever feasible, and advance notice shall be given to the COR.

2. DIVISION 02 – EXISTING CONDITIONS / DEMOLITION

2.1. Demolition: Remove existing air inlet louver frames and louver packs from three (3) cooling towers.

2.2. Disposal: Dispose of all louvers, frames, and debris offsite per federal, state, and local regulations.

2.3. Protection: Protect cooling tower casings, basins, fans, and adjacent equipment during demolition.

3. DIVISION 05 – METALS

3.1. Louver Frames: Provide new stainless steel air inlet louver frames sized to match existing tower openings.

**Submittal required**

3.2. Installation: Install frames square and level. Fasten per manufacturer requirements to resist vibration, wind load, and water spray. **Submittal required**

3.3. Coat and protect all field cuts, welds, or fasteners to prevent corrosion.

4. DIVISION 23 – HEATING, VENTILATION, AND AIR CONDITIONING

4.1. Louver Packs: Install new louver packs into the stainless-steel frames for all three cooling towers. **Submittal required**

4.2. Alignment: Ensure louvers are seated, secured, and aligned to provide proper airflow and water shedding.

4.3. Sealing: Seal all joints between frames and tower walls to prevent bypass air and water leaks. **Submittal required**

4.4. Restoration: Return all cooling towers to full operation after installation of louvers.

4.5. Verification: Verify cooling tower airflow and performance after installation. Provide adjustments as needed to restore design operation.

5. DIVISION 26 – ELECTRICAL (AS REQUIRED)

5.1. Disconnects: Disconnect/reconnect tower fans, basin heaters, and control wiring if disturbed during installation. LO/TO

5.2. Restoration: Restore electrical service to original condition after completion of louver installation.

6. SUBMITTALS and CLOSE-OUT

6.1. Shop drawings showing dimensions, frame anchoring, and installation details.

6.1.1. Product data for stainless steel louver frames and louver packs.

6.1.2. Warranty certificates for frames and louvers.

6.1.3. Submit manufacturer’s maintenance instructions.

6.1.4. Conduct final inspection with IHS COR to confirm cooling towers are fully operational.

6.1.5. Punch List Completion: Contractor shall correct any deficiencies identified during the final inspection prior to government acceptance.

6.1.6. Restoration and Demobilization: Remove all temporary protections, debris, and equipment from the site.

Return the area to a clean and orderly condition.

6.1.7. Final Acceptance: Upon satisfactory completion and documentation, the Government will issue final acceptance and begin the warranty period.

7. ADDITIONAL INFORMATION:

7.1. Cooling Tower Manufacturer: Evapco ESWB 12’ Wide Units

7.1.1. When the system is to be shut down for an extended period of time, the following services should be performed.

7.1.2. The evaporative cooling unit cold water basin should be drained.

7.1.3. The cold water basin should be flushed and cleaned with the suction strainer screens in place.

7.1.4. The suction strainer screens should be cleaned and re-installed.

7.1.5. The cold water basin drain should be left open.

7.1.6. The fan shaft bearings and motor base adjusting screws should be lubricated. This should also be performed if the unit is going to sit idle prior to initial start-up.

7.1.7. The make-up water supply, overflow and drain lines, as well as the recirculating pump and pump piping up to the overflow level must be heat traced and insulated to account for any residual water.

7.1.8. The finish of the unit should be inspected. Clean and refinish as required.

7.1.9. The fan, motor and pump bearings need to be turned at least once a month by hand. This can be accomplished by making sure the unit’s disconnect is tagged and locked out, and grasping the fan assembly, rotating it several turns.

7.1.10. Closed Circuit Coolers only - If the recommended minimum fluid flows thru the heat transfer coil cannot be maintained, and an anti-freeze solution is not in the coil, the coil must be drained immediately whenever the system pumps are shut down or flow stops during freezing conditions. This is accomplished by having automatic drain valves and air vents in the piping to and from the cooler. Care must be taken to ensure that the piping is adequately insulated and sized to allow the water to flow quickly from the coil. This method of protection should be used only in emergency situations and is neither a practical nor recommended method of freeze protection. Coils should not be drained for an extended period of time, as internal corrosion may occur. See Cold Weather Operation section of this document for more details.

SCHEDULE OF MATERIALS SUBMITTALS

Project Number Project Title: Cooling Tower Solicitation/Contract Number

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APPROVED DISAPPROVED

DIV 01 Safety Data Sheets

Monthly and final chemical usage reports

Construction schedule of work.

DIV 05 – Louvers

DIV 23 – Louver Packs x x x x x x

DIV 26 LO/TO

x

Reconnection

Warrenty

O&M

Punchlist

Final Inspection